ventilator

Abstract

Ventilator (110, 300, 1700) configured to deliver a respiratory gas to a patient interface (170), comprising a gas pressurization unit (808) configured to generate a pressurized respiratory gas by pressurizing the respiratory gas; wherein the gas pressurization unit (808) is arranged in a main body (310, 1702) of the ventilator (110, 300, 1700) and a connecting piece (1101) is configured to attach the gas pressurization unit (808) to an interior of the main body (310, 1702) of the ventilator (110, 300, 1700) and / or to dampen vibrations of the gas pressurization unit (808), wherein the connecting piece (1101) comprises a fastening part (1302) configured to attach the connecting part (1101) to the interior of the main body (310, 1702) of the ventilator (110, 300, 1700), wherein the fastening part (1302) is configured in the form of a flat plate and includes an opening,which is designed to allow the passage of pressurized breathing gas, wherein the connecting piece (1101) comprises a connecting part (1301), the connecting part (1301) having a tubular structure, a first end (1303) of the connecting part (1301) being attached to the fastening part (1302), a second end (1304) of the connecting part (1301) being designed to be connected to the outlet opening (1004) of the gas pressurization unit (808), the connecting part (1301) being able to allow the pressurized breathing gas to pass through the tubular structure to the opening of the fastening part (1302), and wherein the connecting part (1301) and the fastening part (1302) are made of different materials.

Description

Technical field

[0001] The present disclosure relates generally to the detection, diagnosis, treatment, prevention and alleviation of respiratory diseases and in particular to systems and methods for the delivery of a respiratory gas. background

[0002] Respiration is essential for maintaining the vitality of a subject (e.g., a human body). The subject's respiratory system facilitates gas exchange. The subject's nose and / or mouth form the entrance to the subject's airways. A number of respiratory disorders exist (e.g., apnea, hypopnea, hyperpnea, snoring, or similar conditions). These disorders can endanger the subject's health (and / or life). Therefore, it is desirable to develop systems and procedures for supplying respiratory gases to the subject. Summary

[0003] In one embodiment, a humidification device is designed to humidify the pressurized breathing gas from a ventilator, wherein the humidification device comprises a liquid chamber designed to hold one or more liquids, the liquid chamber comprising a tank, a tank lid and a humidification device gas inlet opening designed to introduce the pressurized breathing gas into the tank via a first gas passage, the first gas passage comprising an outlet opening.

[0004] In one embodiment, the liquid chamber of the humidification device further comprises: a humidification device gas outlet opening configured to introduce the humidified and pressurized breathing gas back into a main body of the ventilator via a second gas passage, wherein the second gas passage comprises an inlet opening.

[0005] In one embodiment, the liquid chamber of the humidification device comprises a casing, wherein the humidification device gas inlet opening of the liquid chamber and / or the humidification device gas outlet opening of the liquid chamber are arranged on a first side surface of the casing of the liquid chamber, and wherein the outlet opening of the first gas passage for connecting the first gas passage to the tank and / or the inlet opening of the second gas passage for connecting the second gas passage to the tank are arranged inside the casing of the liquid chamber. In one embodiment, the casing comprises an inner casing and an outer casing in a layered structure. Such a layered structure can make it possible to easily disassemble and clean the casing.

[0006] By forming the first and second gas passages within the housing of the liquid chamber, the tank can have a simple design with a much wider opening and a larger volume, making it easier to maintain and fill, e.g., compared to filling with water through one of the gas passages.

[0007] In one embodiment, the outlet opening of the first gas passage faces a second side surface of the liquid chamber housing, the inlet opening of the second gas passage faces a third side surface of the liquid chamber housing, and the second side surface of the liquid chamber housing is opposite the third surface of the liquid chamber housing.

[0008] The distance between the inlet and outlet openings allows the gas flow to travel a greater distance while exposed to the liquid(s) in the tank, thereby increasing the efficiency of the humidification.

[0009] In one embodiment, the liquid chamber comprises a guide plate attached to an upper edge of the outlet opening of the first gas passage, the guide plate being designed to direct the pressurized breathing gas so that it flows downwards to the tank.

[0010] In one embodiment, the first gas passage comprises a first section and a second section, wherein the first section of the first gas passage extends from the humidification device gas inlet opening of the liquid chamber to a first common plane, and wherein the second section of the first gas passage extends from the first common plane to the outlet opening of the first gas passage. Such a gas passage configuration reduces the noise within the liquid chamber emanating from the gas passage.

[0011] In addition or alternatively, according to one embodiment, the second gas passage comprises a first section and a second section, wherein the first section of the second gas passage extends from the inlet opening of the second gas passage to a second common plane, and wherein the second section of the second gas passage extends from the second common plane to the humidifying device gas outlet opening of the liquid chamber.

[0012] By forming the first and second gas passages with a common plane, a compact design can be achieved.

[0013] Additionally or alternatively, the first and second gas passages have a substantially rectangular cross-section. Compared to a tubular cross-section, such a rectangular cross-section can reduce dead space and / or increase the cross-sectional area, thus enabling a more compact design and / or lower resistance for the pressurized gas.

[0014] In one embodiment, the first gas passage and the second gas passage intersect; wherein the distance between the outlet opening and the humidification device gas inlet opening is greater than the distance between the outlet opening and the humidification device gas outlet opening.

[0015] Additionally or alternatively, the distance between the inlet opening and the humidification device gas outlet opening is greater than the distance between the inlet opening and the humidification device gas inlet opening.

[0016] Crossing the first and second gas passages reduces mechanical noise from the main body of a ventilator, which can be connected to the humidification device's gas inlet of the first gas passage, as well as gurgling noise in the tank propagating through the second gas passages. A compact design also reduces dead space. Furthermore, it is less likely that liquid in the tank will reach the inlet and outlet ports.

[0017] In one embodiment, the first section of the first gas passage runs substantially parallel to the second section of the second gas passage along a direction that forms an angle with the first side face of the liquid chamber housing. Additionally or alternatively, in another embodiment, the second section of the first gas passage and the first section of the second gas passage are arranged in different layers. Additionally or alternatively, in another embodiment, a first projection of the second section of the first gas passage onto a horizontal plane and a second projection of the first section of the second gas passage onto the horizontal plane intersect or at least partially overlap.

[0018] In one embodiment, the second section of the first gas passage is arranged below the first section of the second gas passage, or the first section of the second gas passage is arranged below the second section of the first gas passage.

[0019] In one embodiment, an area of ​​a first cross-section of the first gas passage on the first common plane is equal to or less than half an area of ​​the humidification device gas inlet opening of the liquid chamber and / or an area of ​​a second cross-section of the second gas passage on the second common plane is equal to or less than half an area of ​​the humidification device gas outlet opening of the liquid chamber.

[0020] In one embodiment, the liquid chamber further comprises: a first inclined plate arranged between the first cross-section and the humidification device gas inlet opening of the liquid chamber, wherein the first inclined plate is designed to smooth the flow of the pressurized breathing gas in the first gas passage, and a second inclined plate arranged between the second cross-section and the humidification device gas outlet opening of the liquid chamber, wherein the second inclined plate is configured to smooth the flow of the humidified and pressurized breathing gas in the second gas passage.

[0021] In one embodiment, the liquid chamber further comprises a connecting plate, wherein the connecting plate comprises a first opening and a second opening, wherein the first opening and the second opening are respectively associated with the humidification device gas inlet opening and the humidification device gas outlet opening of the liquid chamber, wherein the connecting plate is designed to provide a sealed connection between the liquid chamber and the main body of the ventilator.

[0022] In one embodiment, the liquid chamber further comprises: a first groove arranged between the humidification device gas inlet of the liquid chamber and the connecting plate, wherein the first groove is designed to receive a first part of the one or more liquids and to prevent the first part of the one or more liquids from entering the main body of the ventilator when the liquid chamber is tilted, and / or a second groove arranged between the humidification device gas outlet of the liquid chamber and the connecting plate, wherein the second groove is designed to receive a second part of the one or more liquids and to prevent the second part of the one or more liquids from entering the main body of the ventilator when the liquid chamber is tilted.

[0023] In one embodiment, at least a part of the bottom of the first gas passage is below a lower edge of the humidification device gas inlet opening of the liquid chamber, and / or at least a part of the bottom of the second gas passage is below a lower edge of the humidification device gas outlet opening of the liquid chamber.

[0024] The arrangement can prevent liquid, e.g. condensation, from escaping from the gas passages through the outlet opening and / or entering the outlet opening when the tank lid is closed, or reduce such risks.

[0025] In one embodiment, the housing is connected to and / or connectable with the tank and / or the tank lid and is pivotably arranged relative to the tank. Since the first and / or second gas passage is formed with the housing, the tank structure can be designed in a very simple manner, allowing for better access for cleaning and filling with liquid.

[0026] In one embodiment, a side wall of the liquid chamber in contact with the liquid is at least partially formed by an outer wall of the tank, which forms the outer surface of the humidification device. Additionally or alternatively, the tank is designed with only one opening for filling with liquid and for exchanging pressurized gas. Compared to some known designs, the liquid chamber and / or the tank can be designed in a simpler manner, e.g., with a single-layer side wall and / or with a substantially open top, thereby reducing weight and size, increasing the contact area between the liquid and gas, and facilitating access to the tank / liquid chamber.

[0027] In one embodiment, the tank lid is pivotably connected to the tank by means of a connecting mechanism; wherein at least one section of the side of the first gas passage near the connecting mechanism is covered in the direction of flow by a side edge of the humidification device gas inlet opening of the liquid chamber and / or wherein at least one section of the side of the second gas passage near the connecting mechanism is covered in the direction of flow by a side edge of the humidification device gas outlet opening of the liquid chamber.

[0028] As soon as the tank lid is opened by pivoting it around an axis of rotation defined by the connecting mechanism, the side of the first and / or second gas passage near the connecting mechanism is brought into a lower position than the other sides of the first and / or second gas passage. Covering at least a section of such a side prevents liquid from escaping or dripping from the first and / or second gas passage and, for example, damaging electronic components or dripping onto the surface on which the humidifying device is located.

[0029] In one embodiment, the tank lid is pivotably connected to the tank by means of a connecting mechanism, wherein the distance between the connecting mechanism and the humidification device gas outlet opening is less than the distance between the connecting mechanism and the humidification device gas inlet opening.

[0030] Due to the connection mechanism and the leverage effect, the opening near the connection mechanism, e.g., a pivoting joint, can exhibit a tighter seal and / or a smaller gap error than the opening located far from the connection mechanism. Positioning the humidification device gas outlet near the connection mechanism improves the seal of the humidified gas flowing through the humidification device gas outlet, which in certain circumstances may be more important than sealing the unhumidified gas entering the humidification device through the humidification device gas inlet.

[0031] In one embodiment, a ventilator is configured to deliver respiratory gas to a patient interface, comprising the humidification device mentioned above and further comprising: a gas pressurization unit configured to generate the pressurized respiratory gas by pressurizing the respiratory gas, the gas pressurization unit being located in a main body of the ventilator, the main body of the ventilator comprising a housing with a first side wall configured to discharge the pressurized respiratory gas; a main gas inlet opening configured to introduce the respiratory gas into the ventilator, the main gas inlet opening being arranged on a second side wall of the housing of the main body of the ventilator; and a main gas outlet opening configured to discharge the humidified and pressurized respiratory gas to a breathing tube.

[0032] In one embodiment, the main gas outlet opening is provided for attachment to the main body of a ventilator.

[0033] In one embodiment, the main gas outlet opening is located at the liquid chamber.

[0034] In one embodiment, the first side surface of the liquid chamber housing faces the first side wall of the housing of the main body of the ventilator.

[0035] In one embodiment, a ventilator is configured to deliver a respiratory gas to a patient interface, comprising: a gas pressurization unit located in a main body of the ventilator; a humidification device detachably connected to the main body of the ventilator; wherein the humidification device comprises: a liquid chamber configured to hold one or more liquids.

[0036] In one embodiment, the liquid chamber comprises a tank and a tank lid which is pivotably connected to the tank by means of a connecting mechanism with a pivot axis; wherein the tank comprises an opening for filling with at least one of the one or more liquids, wherein the opening can be opened by opening the tank lid and / or closed by closing the tank lid; and wherein the humidification device and the main body of the ventilator can be fluidically connected by closing the tank lid and fluidically separated by opening the tank lid.

[0037] By fluidically connecting the main body and the humidification device using the pivoting tank lid to form the flow channel for the pressurized gas and / or the humidified and pressurized gas, the mechanical connection between the main body and the tank (which is often filled with water) can be isolated from the fluidic seal. This makes the mechanical connection between the main body and the tank easier to operate, while the fluidic connection remains gas-tight under pressure. Furthermore, a leverage effect of the tank lid can be used to ensure, on the one hand, that the fluidic connection is sealed against the pressurized gas, and on the other hand, to guarantee easy operation with minimal effort.In some embodiments, the fluid chamber can be attached directly to the main body of the ventilator, wherein the fluid chamber and the main body of the ventilator are fluidically connectable via at least one connecting port to form at least one flow channel between the main body of the ventilator and the fluid chamber, and wherein the fluid chamber can include the tank lid, which can be opened. To fill the fluid chamber, the user simply needs to open the tank lid and pour the fluid into the tank. The fluid connection between the fluid chamber and the main body can be disconnected during filling. Therefore, the ventilator has a simplified structure and is easy to use.In some embodiments, the main body of the ventilator may include a blower of the gas pressurization unit and / or a heating component designed to heat the liquid(s) in the liquid chamber. The heating component may be attached to a side face of the main body. The heating component and the main body may be formed as a single unit, or the heating component may be detachable from the main body. In some embodiments, the tank and the tank lid may be locked when the tank lid is closed. In some embodiments, the liquid chamber and the heating component may be locked. In some embodiments, the tank lid may not be locked to the main body, and the tank lid is attached to the main body via the locking mechanism between the tank and the tank lid, as well as the locking mechanism between the tank and the main body.If the liquid chamber is equipped with the heating component, the tank lid can be opened by unlocking it from the tank. This facilitates opening and closing the tank lid, as well as connecting and disconnecting the fluid between the tank lid and the main body. It should be noted that any other locking mechanism between the tank and the tank lid can perform the functions described above without unlocking the liquid chamber from the main body.

[0038] In some embodiments, the tank and the main body can be connected to each other by moving the tank in a fastening direction relative to the main body at an angle between the axis of rotation and the fastening direction between 20° and 160°, or in some embodiments between 45° and 135°, or in some further embodiments between 60° and 120°; and / or wherein the tank and the main body can be unlocked from each other by moving the tank in an unlocking direction relative to the main body at an angle between the axis of rotation and the unlocking direction between 20° and 160°, in some embodiments between 45° and 135°, or in some further embodiments between 60° and 120°.

[0039] By arranging the axis of rotation relative to the mounting direction as described, the tank lid can be closed in a direction perpendicular to the axis of rotation and have a component in the mounting direction. Thus, closing the tank lid towards the tank can also result in the tank being secured to the main body. This improves user comfort.

[0040] In some embodiments, the angle between the fastening direction and the unlocking direction is between -45° and 45°, in some other embodiments between -30° and 30°, and in some further embodiments between -15° and 15°. In one embodiment, the fastening direction and the unlocking direction can be essentially in the same direction. This can be further combined with a pivot axis that allows the tank cap to be opened only in a direction substantially opposite to the unlocking direction, thus preventing the user from accidentally unlocking the tank by opening the cap. User convenience is increased.

[0041] In some embodiments, the humidification device and the main body of the ventilator are fluidically connectable to each other via at least one connecting opening to form at least one flow channel between the main body of the ventilator and the liquid chamber; wherein the at least one connecting opening comprises a gas inlet opening and a gas outlet opening; wherein the connecting opening comprises an axial sealing element to fluidically seal the gas inlet opening and the gas outlet opening; wherein an inner surface of the axial sealing element at least partially forms the flow channel and wherein the axial sealing element defines a sealing plane.

[0042] By using an axial sealing element, the sealing element generates less frictional force during connection and separation compared to a conical connector that forms a radial seal, thus improving user comfort and operational safety.

[0043] In some embodiments, the angle between the sealing plane and the liquid level in the liquid chamber is between -75° and 75°, in some further embodiments between -30° and 30°, and in some further embodiments between 15° and 65°; and / or wherein the angle between the sealing plane and the fastening direction is between 15° and 165°, in some further embodiments between 30° and 150°, in some further embodiments between 45° and 135°, and in some further embodiments between 70° and 110°; and / or wherein the angle between the liquid level and the unlocking direction is between 15° and 165°, in some further embodiments between 30° and 150°, in some further embodiments between 45° and 135°, and in some further embodiments between 70° and 110°.

[0044] By arranging the sealing plane in the manner described relative to the fluid level (e.g., the horizontal plane) and / or by arranging the fastening direction in the manner described relative to the fluid level, the risk of fluid spillage during sealing, unlocking, and / or fastening is reduced. The fluid level is the intended level of the fluid during normal use of the ventilator and humidifier.

[0045] In some embodiments, the inner surface of the axial sealing element forms at least part of the flow channel and / or the overlapping portion of the gas inlet and outlet openings in a sealed state is less than 5 mm, so that the gas inlet opening is separable from the gas outlet opening without the gas inlet opening touching the gas outlet opening; wherein the axial sealing element comprises one or more elastic materials with a Shore hardness of less than 70 (e.g., 20-70, 60, or the like), according to ASTM D2240 Type A, and wherein the axial sealing element is compressed in a sealed state by 10% to 50% and / or by 0.5 to 6 mm (e.g., 1 to 3 mm) in the axial direction, compared to a state in which the main body and humidifying device are unlocked.

[0046] In some embodiments, the gas inlet opening comprises an inlet opening and the gas outlet opening comprises an outlet opening, wherein the inlet and outlet openings are formed from one or more materials with a higher hardness than the elastic material from which the axial sealing element is made.

[0047] In some embodiments, the axial sealing element is formed around the inlet opening and / or around the outlet opening.

[0048] In some embodiments, the inlet and outlet openings are formed from materials with a higher hardness than the elastic material forming the axial sealing element, and the inlet and outlet openings are spaced apart from each other in the axial direction of the axial sealing element. In some embodiments, the inlet and outlet openings are spaced apart from each other by at least 1 mm in the axial direction of the axial sealing element when the humidifying device is sealed and secured, and in some further embodiments by at least 5 mm.The axial spacing of the inlet and outlet ports not only minimizes friction between them, but also reduces collisions between the higher-hardness materials used in their construction, thus minimizing sudden noises during assembly and / or disassembly of the ventilator. Just before the inlet and outlet ports connect, the axial sealing element also dampens the relative movement between the humidification unit and the main body of the ventilator, further enhancing user comfort.

[0049] In some embodiments, the axial sealing element comprises several parts made of one or more elastic materials and configured such that during coupling or decoupling of the humidification device, a dynamic frictional force exists only between these parts.

[0050] In some embodiments, the axial sealing element comprises a sealing lip that projects from at least one of the inlet and outlet openings, wherein the sealing lip is inclined towards the center of the flow channel and is designed to bend towards the center of the flow channel when it is pressed and / or compressed by connecting the gas inlet opening with the gas outlet opening.

[0051] In some embodiments, the liquid chamber is detachably connected to the main body of the ventilator by means of a push-push mechanism.

[0052] In some embodiments, a pressure direction of the push-push mechanism is essentially perpendicular to the axis of rotation of the connection mechanism, wherein the humidifying device and the main body of the ventilator can be fluidically connected by closing the tank lid in the pressure direction of the push-push mechanism while the tank is attached to the main body, and by attaching the liquid chamber to the main body in the pressure direction while the tank lid is closed.

[0053] In some embodiments, the gas pressurization unit is configured to generate pressurized breathing gas by pressurizing the breathing gas; the main body of the ventilator comprises a housing provided with a first side wall configured to discharge the pressurized breathing gas; the humidification device is configured to humidify the pressurized breathing gas; the ventilator further comprises: a first gas inlet opening configured to introduce the breathing gas into the ventilator, the first gas inlet opening being arranged on a second side wall of the housing of the main body of the ventilator; and a first gas outlet opening configured to discharge the humidified and pressurized breathing gas into a breathing tube; the liquid chamber being openable from a front of the ventilator;wherein the humidification device further comprises a heating plate configured to heat the one or more liquids and generate steam to humidify the pressurized breathing gas.

[0054] In some embodiments, the liquid chamber is detachably connected to the main body of the ventilator.

[0055] In some embodiments, the liquid chamber comprises: a tank; and a tank lid which is pivotally connected to the tank by means of a connecting mechanism.

[0056] In some embodiments, the tank lid includes a second gas inlet opening, wherein the second gas inlet opening is designed to introduce the pressurized breathing gas from the main body of the ventilator into the liquid chamber.

[0057] In some embodiments, the first gas outlet opening is located on the liquid chamber.

[0058] In some embodiments, the ventilator further comprises: a connecting piece configured to provide a sealed connection between the tank lid and the main body of the ventilator, wherein the connecting piece comprises a sloping surface directed towards the tank lid, the tank lid comprises a corresponding sloping surface directed towards the connecting piece, and the sloping surface of the tank lid comprises the second gas inlet opening.

[0059] In some embodiments, the connecting piece includes a seal, the seal has a first opening, the first opening corresponds to the second gas inlet opening of the tank lid, so that when the tank lid is closed, the tank lid is in a sealed connection with the main body of the ventilator by means of the seal, the first opening and the gas inlet opening of the tank lid are able to introduce the pressurized breathing gas from the main body of the ventilator into the liquid chamber.

[0060] In some embodiments, the ventilator further comprises: a connecting piece configured to provide a sealed connection between the tank lid and the main body of the ventilator, wherein the connecting piece comprises a first threaded hose, the first threaded hose corresponding to the second inlet opening of the tank lid.

[0061] In some embodiments, the tank lid includes a second gas inlet opening and a second gas outlet opening, wherein the second gas inlet opening is designed to introduce the pressurized breathing gas from the main body of the ventilator into the liquid chamber, and the second gas outlet opening is designed to discharge the humidified and pressurized breathing gas from the liquid chamber back into the main body of the ventilator.

[0062] In some embodiments, the ventilator further comprises: a connecting piece designed to create a sealed connection between the tank lid and the main body of the ventilator.

[0063] In some embodiments, the connecting piece comprises a sloping surface directed towards the tank lid, the tank lid comprises a corresponding sloping surface directed towards the connecting piece, and the sloping surface of the tank lid comprises the second gas inlet opening and the second gas outlet opening.

[0064] In some embodiments, the angle between the sloping surface of the connector and a horizontal plane is essentially between 45° and 60°.

[0065] In some embodiments, in which the connecting piece includes a seal, the seal comprises a first opening and a second opening, wherein the first opening corresponds to the second gas inlet opening of the tank lid and the second opening corresponds to the second gas outlet opening of the tank lid, such that when the tank lid is closed, the tank lid is in a sealed connection with the main body of the ventilator via the seal, the first opening and the second gas inlet opening of the tank lid are suitable for introducing the pressurized breathing gas from the main body of the ventilator into the liquid chamber, and the second opening and the second gas outlet opening of the tank lid are suitable for introducing the humidified and pressurized breathing gas from the liquid chamber back into the main body of the ventilator.

[0066] In some embodiments, the connecting piece comprises a first threaded hose and a second threaded hose, wherein the first threaded hose corresponds to the second gas inlet opening of the tank cap and the second threaded hose corresponds to the second gas outlet opening of the tank cap.

[0067] In some embodiments, the first threaded hose and the second threaded hose are essentially vertical, and the second gas inlet and the second gas outlet of the tank cap are arranged in a horizontal plane facing the first threaded hose and the second threaded hose, such that when the tank cap is closed, the tank cap is in a sealed connection with the main body of the ventilator via the first threaded hose and the second threaded hose, the first threaded hose and the second gas inlet of the tank cap are suitable for introducing the pressurized breathing gas from the main body of the ventilator into the liquid chamber, and the second threaded hose and the second gas outlet of the tank cap are suitable for introducing the humidified and pressurized breathing gas from the liquid chamber back into the main body of the ventilator.

[0068] In some embodiments, the tank cap includes a handle and a locking mechanism on the back of the handle, the tank includes a notch in a position relative to the handle of the tank cap, and the tank cap is secured to the tank by the interaction of the locking mechanism and the notch when the tank cap is closed.

[0069] In some embodiments, the handle is attached to a front of the ventilator, and the connecting mechanism between the tank and the tank lid is attached to a rear of the ventilator, so that when the tank lid is opened, an underside of the tank lid is essentially upright and points towards the front of the ventilator.

[0070] In some embodiments, the connection mechanism between the tank and the tank lid comprises: one or more first connecting pieces attached to the tank; and one or more second connecting pieces attached to the tank lid, wherein the one or more second connecting pieces are in a pivot connection with the one or more first connecting pieces.

[0071] In some embodiments, each of the one or more first connecting pieces includes a pin hole, and each of the one or more second connecting pieces includes a pin.

[0072] In some embodiments, each of the one or more second connecting pieces includes a pin hole and each of the one or more first connecting pieces includes a pin.

[0073] In some embodiments, each of the one or more first connecting pieces comprises a first inclined guide surface, each of the one or more second connecting pieces comprises a second inclined guide surface, and the first inclined guide surface and the second inclined guide surface are designed to facilitate the installation of the tank lid on the tank.

[0074] In some embodiments, at least one of the one or more first connecting pieces comprises a projecting column, at least one of the one or more second connecting pieces comprises a groove, and the groove is designed to accommodate the projecting column and to limit a reverse rotation of the tank lid when the tank lid is opened to a certain angle.

[0075] In some embodiments, the at least one of the one or more second connecting pieces further comprises a guide slot, wherein the guide slot is arranged along a section of a path of movement of the projecting column and is configured to smooth a movement of the projecting column.

[0076] In some embodiments, the guide slot comprises a first end adjacent to the groove and a second end away from the groove, and the depth of the guide slot gradually changes from a relatively small value at the first end to a relatively large value at the second end.

[0077] In some embodiments, the one or more second connecting pieces include a baffle plate designed to limit maximum rotational movement of the tank cap when the tank cap is opened.

[0078] In some embodiments, a ventilator configured to deliver a breathing gas to a patient interface may comprise: a gas pressurization unit configured to generate a pressurized breathing gas by pressurizing the breathing gas, wherein the gas pressurization unit is located in a main body of the ventilator, the main body of the ventilator comprising a housing with a first side wall configured to discharge the pressurized breathing gas; a gas inlet opening configured to introduce the breathing gas into the ventilator, the gas inlet opening being arranged on a second side wall of the housing of the main body of the ventilator; a gas filter component configured to filter the breathing gas introduced into the ventilator and / or the pressurized breathing gas discharged from the gas pressurization unit;and a gas outlet opening designed to release the pressurized breathing gas to a breathing tube.

[0079] In some embodiments, the gas filter component may comprise: a housing that is detachably connected to the gas inlet opening of the ventilator; and one or more gas filter units that are fitted into the housing, wherein the one or more gas filter units are designed to filter the breathing gas entering the ventilator.

[0080] In some embodiments, the one or more gas filter units may comprise a first gas filter unit, wherein the first gas filter unit is a coarse filter.

[0081] In some embodiments, the one or more gas filter units may include a second gas filter unit, wherein the second gas filter unit is a fine filter.

[0082] In some embodiments, the housing may include a gas inlet end and a gas outlet end, wherein the gas inlet end comprises a first cover plate with at least one hole and the gas outlet end comprises a second cover plate with at least one hole.

[0083] In some embodiments, the one or more gas filter units may comprise a coarse filter and a fine filter, with the coarse filter being positioned closer to the gas inlet end of the housing than the fine filter.

[0084] In some embodiments, the gas inlet end can have a larger inlet area than the gas outlet end.

[0085] In some embodiments, the gas filter component may further comprise a baffle plate, wherein the baffle plate has an area that is smaller than the gas inlet end of the housing, wherein the baffle plate is mounted in the housing and wherein the baffle plate is positioned closer to the gas inlet end of the housing than the one or more gas filter units.

[0086] In some embodiments, the gas outlet end of the housing can be in a sealed connection with the gas inlet opening of the ventilator via a silicone seal.

[0087] In some embodiments, the gas filter component may include a third gas filter unit that is located inside the gas inlet opening of the ventilator, the third gas filter unit being designed to filter the breathing gas entering the ventilator.

[0088] In some embodiments, the third gas filter unit may include a coarse filter and / or a fine filter.

[0089] In some embodiments, the gas filter component may include a fourth gas filter unit configured to filter one or more gases with a pungent odor in one or more gas passages of the ventilator, wherein the fourth gas filter unit comprises a membrane made of one or more nanomaterials with adsorption capacity.

[0090] In some embodiments, the one or more nanomaterials may include at least one of activated carbon or graphene.

[0091] In some embodiments, the fourth gas filter unit may be located outside the gas inlet opening of the ventilator, at the gas inlet opening of the ventilator, inside the gas inlet opening of the ventilator, between the gas inlet opening of the ventilator and a gas inlet opening of the gas pressurization unit, at the gas inlet opening of the gas pressurization unit, at a gas outlet opening of the gas pressurization unit, between the gas outlet opening of the gas pressurization unit and the gas outlet opening of the ventilator, and / or at the gas outlet opening of the ventilator.

[0092] In some embodiments, the gas filter component may include a fifth gas filter unit designed to filter bacteria in one or more gases in one or more gas passes of the ventilator.

[0093] In some embodiments, the fifth gas filter unit may be located outside the gas inlet opening of the ventilator, at the gas inlet opening of the ventilator, inside the gas inlet opening of the ventilator, between the gas inlet opening of the ventilator and a gas inlet opening of the gas pressurization unit, at the gas inlet opening of the gas pressurization unit, at a gas outlet opening of the gas pressurization unit, between the gas outlet opening of the gas pressurization unit and the gas outlet opening of the ventilator, and / or at the gas outlet opening of the ventilator.

[0094] In some embodiments, the ventilator may further include a humidification device designed to humidify the pressurized breathing gas delivered from the gas pressure unit, and the fifth gas filter unit may be installed in a gas passage between the humidification device and the gas outlet opening of the ventilator.

[0095] In some embodiments, the ventilator may further comprise: a ventilation mask; and a ventilation tube designed to introduce the pressurized breathing gas from the gas outlet of the ventilator into the ventilation mask.

[0096] In some embodiments, the gas filter component may comprise one or more gas filter units, and at least one of the one or more gas filter units may be located in the breathing tube or in the breathing mask.

[0097] In some embodiments, the ventilator may further include a humidification device designed to humidify the pressurized breathing gas delivered from the gas pressure supply unit.

[0098] In some embodiments, a ventilator configured to deliver a breathing gas to a patient interface may comprise: a gas pressurization unit configured to generate a pressurized breathing gas by pressurizing the breathing gas, the gas pressurization unit being located in a main body of the ventilator; and a connecting piece configured to attach the gas pressurization unit to an interior of the main body of the ventilator and / or to dampen vibrations of the gas pressurization unit.

[0099] In some embodiments, the main body of the ventilator may comprise a housing with a first side wall configured to discharge the pressurized breathing gas. The ventilator may further comprise: a gas inlet opening configured to introduce the breathing gas into the ventilator, the gas inlet opening being located on a second side wall of the housing of the main body of the ventilator; and a gas outlet opening configured to discharge the humidified and pressurized breathing gas to a breathing tube.

[0100] In some embodiments, the connecting piece may comprise: a connecting part configured to connect an outlet opening of the gas pressurization unit and to form a sealed connection between the connecting piece and the gas pressurization unit; and a fastening part configured to fasten the connecting piece to the interior of the main body of the ventilator and to form a fastening connection between the connecting piece and the main body of the ventilator.

[0101] In some embodiments, the fastening part may be in the form of a flat plate and have an opening designed to allow pressurized breathing gas to pass through.

[0102] In some embodiments, the connecting part may have a tubular structure; a first end of the connecting part may be attached to the fastening part; a second end of the connecting part may be connected to the outlet opening of the gas pressurization unit; and the connecting part may be suitable for allowing the pressurized breathing gas to pass through the tubular structure to the opening of the fastening part.

[0103] In some embodiments, the second end of the connecting part can be an annular double-layered connection comprising an inner layer and an outer layer.

[0104] In some embodiments, the inner layer can be connected to an outer surface of the outlet opening of the gas pressurization unit.

[0105] In some embodiments, the outer surface of the outlet opening of the gas pressurization unit may have one or more protruding projections, and an inner surface of the inner layer may have one or more corresponding grooves that correspond to the one or more protruding projections; or the outer surface of the outlet opening of the gas pressurization unit may have one or more grooves, and the inner surface of the inner layer may have one or more corresponding protruding projections that correspond to the one or more grooves.

[0106] In some embodiments, the outer layer may comprise a first ring-shaped flexible structure designed to dampen vibrations of the gas pressurization unit along an axial direction of the connecting part.

[0107] In some embodiments, the first ring-shaped flexible structure can have at least one of the following shapes: U-shape, V-shape, Z-shape, M-shape, S-shape, C-shape, O-shape or one or more folds.

[0108] In some embodiments, the outer layer can be connected to an inner surface of the outlet opening of the gas pressurization unit.

[0109] In some embodiments, the inner surface of the outlet opening of the gas pressurization unit may have one or more protruding projections, and an outer surface of the outer layer may have one or more corresponding grooves that correspond to the one or more protruding projections; or the inner surface of the outlet opening of the gas pressurization unit may have one or more grooves, and the outer surface of the outer layer may have one or more corresponding protruding projections that correspond to the one or more grooves.

[0110] In some embodiments, the inner layer may comprise a first ring-shaped flexible structure designed to dampen vibrations of the gas pressurization unit along an axial direction of the connecting part.

[0111] In some embodiments, the first ring-shaped flexible structure may have at least one U-shape, one V-shape, one Z-shape, one M-shape, one S-shape, one C-shape, one O-shape, or one or more folds.

[0112] In some embodiments, a connection between the inner layer and the outer layer may include a second annular flexible structure designed to dampen vibrations of the gas pressurization unit along a radial direction of the connecting part.

[0113] In some embodiments, the second annular flexible structure may have at least one U-shape, a V-shape, a Z-shape, an M-shape, an S-shape, a C-shape, an O-shape, or one or more folds.

[0114] In some embodiments, the fastening part and the connecting part can be one piece.

[0115] In some embodiments, two opposite sides of the fastening part can be inserted into two slots in the main body of the ventilator.

[0116] In some embodiments, the fastening part or the connecting part may comprise a flexible material.

[0117] In some embodiments, the flexible material may comprise at least one elastic material or a wear-resistant material.

[0118] In some embodiments, the gas outlet opening can be located on the main body of the ventilator.

[0119] In some embodiments, the gas outlet opening can be located on the liquid chamber.

[0120] In some embodiments, the ventilator may include one or more gas filter units attached to the housing, wherein the one or more gas filter units may extend vertically from the lower edge of the gas pressurization unit to the upper edge of the gas pressurization unit and / or wherein the one or more gas filter units may extend horizontally from one side of the gas pressurization unit to the opposite side of the gas pressurization unit.

[0121] In some embodiments, a ventilator configured to deliver a breathing gas to a patient interface may include: a gas pressurization unit configured to generate a pressurized breathing gas by pressurizing the breathing gas, the gas pressurization unit being located in a main body of the ventilator; a main gas outlet opening configured to deliver a humidified and pressurized breathing gas to a breathing tube.

[0122] In some embodiments, the main body of the ventilator may comprise a housing with a first side wall configured to discharge the pressurized breathing gas; the ventilator may further comprise: a main gas inlet opening configured to introduce the breathing gas into the ventilator, the main gas inlet opening being arranged on a second side wall of the housing of the main body of the ventilator; and a gas parameter sensing arrangement configured to sensing one or more gas parameters of the ventilator.

[0123] In some embodiments, the gas parameter detection arrangement may include: a detection part configured to detect a gas flow; a first sensor configured to measure a pressure of the gas flow; and a first tube configured to introduce the gas flow from the detection part to a surface of the first sensor.

[0124] In some embodiments, the first sensor can be a pressure sensor.

[0125] In some embodiments, the first sensor can be integrated into a printed circuit board (PCB) that is mounted inside the ventilator.

[0126] In some embodiments, the detection part may face the main gas outlet opening of the ventilator.

[0127] In some embodiments, the sensing part may comprise: an inlet opening arranged on a first surface of the sensing part, the first surface facing the main gas outlet of the ventilator; an outlet opening arranged on a second surface of the sensing part, the second surface being different from the first surface; and a curved channel arranged within the sensing part, the curved channel being designed to connect the inlet opening and the outlet opening; the second surface of the sensing part being in a sealed connection with an inner surface of the main body of the ventilator; and the inlet opening being arranged above the second surface of the sensing part, or the sensing part being projecting from the inner surface of the main body of the ventilator to prevent water from flowing into the sensing part.

[0128] In some embodiments, the inlet opening may be located below a top surface of the curved channel to prevent condensation from flowing through the curved channel to the surface of the first sensor.

[0129] In some embodiments, the inlet opening may be located below an upper edge of the main gas outlet opening of the ventilator, but above a lower edge of the main gas outlet opening of the ventilator.

[0130] In some embodiments, the outlet opening can be located below the inlet opening.

[0131] In some embodiments, the gas parameter detection arrangement may further be configured to detect a flow of one or more gases in one or more passes of the ventilator.

[0132] In some embodiments, the gas parameter sensing arrangement may further comprise: a second sensor configured to detect a flow signal associated with the one or more gases in the one or more passages of the ventilator; a second tube configured to direct a gas flow from the sensing part to a surface of the second sensor; an auxiliary sensing orifice arranged upstream of the one or more gases; and a third tube configured to direct a gas flow from the auxiliary sensing orifice to a surface of the second sensor.

[0133] In some embodiments, the first sensor and the second sensor can share the same sensing element.

[0134] In some embodiments, the second sensor can be a flow sensor.

[0135] In some embodiments, the sensing part may contain silicone.

[0136] In some embodiments, the detection element can be detachably connected to the ventilator.

[0137] In some embodiments, the ventilator may further include a pressure sensor and a flow sensor for snoring detection, as well as a gas inlet opening for humidified gas configured to introduce pressurized and humidified gas from a humidification device; and the pressure sensor and the flow sensor may be connected via a curved channel to a section between the main gas outlet opening of the ventilator and the gas inlet opening for humidified gas.

[0138] In some embodiments, the gas parameter detection arrangement can be configured to detect one or more gas parameters of the humidified and pressurized breathing gas.

[0139] In some embodiments, the ventilator may further comprise a humidification device configured to generate the humidified and pressurized breathing gas, and the gas parameter sensing arrangement may include a sensing part arranged downstream of the humidified and pressurized breathing gas relative to the humidification device.

[0140] In some embodiments, an inlet opening of the detection part can be arranged below an upper edge of the main gas outlet opening of the ventilator, but above a lower edge of the main gas outlet opening of the ventilator.

[0141] In some embodiments, a ventilator designed to deliver respiratory gas to a patient interface may include: a gas pressurization unit located in a main body of the ventilator; a humidification device detachably connected to the main body of the ventilator, wherein the humidification device comprises a liquid chamber configured to hold one or more liquids; wherein the liquid chamber may be detachably connected to the main body of the ventilator via a push-push mechanism.

[0142] In some embodiments, the gas pressurization unit may be configured to generate a pressurized breathing gas by pressurizing the breathing gas, wherein the main body of the ventilator comprises a housing with a first side wall configured to discharge the pressurized breathing gas; the humidification device may be configured to humidify the pressurized breathing gas; the ventilator may further comprise: a gas inlet opening configured to introduce the breathing gas into the ventilator, the gas inlet opening being arranged on a second side wall of the housing of the main body of the ventilator; and a gas outlet opening configured to deliver the humidified and pressurized breathing gas to a breathing tube.

[0143] In some embodiments, the push-push mechanism may comprise: a guide slot attached to the main body of the ventilator; a sliding block attached to the main body of the ventilator, wherein the sliding block is positioned in the guide slot and is movable back and forth along the guide slot in a first direction; and a push rod arranged on the fluid chamber, wherein the push rod is movable back and forth along a second direction, the second direction being perpendicular to the first direction; wherein the sliding block may comprise a guide block, the guide block comprising a first chamfer, a groove, and a second chamfer, the guide block being configured to guide or limit a movement position of the push rod.

[0144] In some embodiments, the direction of inclination of the first inclination may differ from the direction of inclination of the second inclination; and a first angle between the first inclination and a vertical direction may be greater than a second angle between the second inclination and the vertical direction.

[0145] In some embodiments, the guide block may have a frame similar to the symbol A.

[0146] In some embodiments, the push-push mechanism may further comprise: a first spring having a first end and a second end, wherein the first end of the first spring is connected to a first end of the guide block and the second end of the first spring is attached to the main body of the ventilator; and a second spring having a first end and a second end, wherein the first end of the second spring is connected to a second end of the guide block and the second end of the second spring is attached to the main body of the ventilator; wherein the first spring can be compressed when the guide block is driven to move along the first direction; and the compressed first spring can drive the guide block to move along a direction opposite to the first direction.

[0147] In some embodiments, when driven by a first thrust force, the push rod can cause the guide block to move along the first direction, while the push rod moves along the second direction and slides downwards along the first inclination of the guide block; upon release of the first thrust force, the push rod can be able to move along a direction opposite to the second direction, while the guide block moves along a direction opposite to the first direction, so that the push rod becomes stuck in the groove of the guide block; when driven by a second thrust force, the push rod can be moved in the second direction and move out of the groove, while the guide block moves in the direction opposite to the first direction, so that the push rod is released from the groove;and when the second thrust force is released, the push rod can move along the opposite direction of the second direction and slide upwards along the second inclination of the guide block, while the guide block moves along the opposite direction of the first direction, so that the fluid chamber is released from the main body.

[0148] In some embodiments, the sliding block may further have a protrusion below the groove of the guide block, the protrusion being designed to guide the push rod into the groove when the first push force is released.

[0149] In some embodiments, the push rod may be arranged below a bottom surface of the liquid chamber; the guide slot and the sliding block may be arranged below an interface between the liquid chamber and the main body of the ventilator; a plate at the interface may have a first hole; and the push rod may be passed through the first hole to interact with the sliding block.

[0150] In some embodiments, the plate may have a second hole at the interface; the humidification device may further comprise a heating plate, the heating plate being configured to heat the one or more liquids and generate steam to humidify the pressurized breathing gas; and the heating plate may be attached to a base of the ventilator by means of one or more springs, so that the heating plate can move up and down through the second hole when driven by pressure or when the pressure decreases.

[0151] In some embodiments, the liquid chamber may have a bottom, wherein the bottom comprises a metallic heat-conducting material; and the bottom of the liquid chamber may be in close contact with the heating plate when the liquid chamber is attached to the main body of the ventilator.

[0152] In some embodiments, the gas outlet opening can be located on the main body of the ventilator.

[0153] In some embodiments, the gas outlet opening can be located on the liquid chamber.

[0154] In some embodiments, the push-push mechanism can be designed to unlock the fluid chamber from the main body of the ventilator by pushing or pressing the fluid chamber in a direction of pressure that is essentially perpendicular to the fluid level in the chamber. Since pushing is easier than pulling and can be performed with one hand, user comfort is improved. Furthermore, any locking and / or connecting mechanism between the fluid chamber and the main body is subjected to less tensile force, thus increasing its service life, as such a mechanism can typically withstand a much higher compressive force than a tensile force. Additionally, pushing to unlock also reduces the likelihood of fluid leakage from the chamber during disassembly.

[0155] In some embodiments, the push-push mechanism may be designed to include an energy storage device to store the energy of the pressure movement and to release the stored energy after the liquid chamber has been unlocked by applying a force to the liquid chamber essentially in the opposite direction to the pressure direction.

[0156] In some embodiments, the liquid chamber may comprise: a tank; and a tank lid pivotally connected to the tank via a linkage mechanism; wherein the tank lid may be designed to be closed by pushing in the direction of pressure and / or designed to be opened by pulling essentially in a direction opposite to the direction of pressure. Since the tank lid can be closed in the same direction, a single pushing motion can close the tank lid and simultaneously secure the liquid chamber to the main body, thus increasing convenience.Since the tank lid opens in the opposite direction, the likelihood of the user confusing opening the tank lid with removing the liquid chamber from the main body is minimized, thus avoiding the situation where the user accidentally opens the tank lid when they only wanted to remove the humidifying device and spills the liquid.

[0157] In some embodiments, a method for operating a ventilator may include: connecting the humidification device to the main body of the ventilator by pressing the liquid chamber in a pressure direction and unlocking the humidification device from the main body by pressing the liquid chamber substantially in the pressure direction.

[0158] In some embodiments, the liquid chamber may comprise: a tank; and a tank lid pivotably connected to the tank by means of a linking mechanism; and the method may further comprise: positioning the humidification device on a surface of the ventilator prior to the coupling step; the coupling step of the humidification device may further comprise locking the tank lid to the tank by pressing the tank lid substantially in the direction of pressure. Brief description of the drawings

[0159] The present disclosure is further described with reference to exemplary embodiments. These exemplary embodiments are described in detail with reference to the drawings. The drawings are not to scale. These embodiments are non-limiting exemplary embodiments in which the same reference numerals represent similar structures in the different views of the drawings, and wherein: Fig. 1 is a schematic diagram illustrating an exemplary system for supplying a breathing gas according to some embodiments of the present disclosure; Fig. 2 is a block diagram illustrating an exemplary ventilator according to some embodiments of the present disclosure; Fig. 3A-3D illustrate an exemplary ventilator according to some embodiments of the present disclosure; Fig. 4 illustrates an exemplary process for the delivery of a breathing gas according to some embodiments of the present disclosure; Fig. Figures 5A-5E illustrate exemplary gas passages of a ventilator according to some embodiments of the present disclosure; Fig. 6A-6E illustrate an exemplary gas filter component according to some embodiments of the present disclosure; Fig. 7A and Fig. 7B illustrates an exemplary gas filter unit according to some embodiments of the present disclosure; Fig. Figures 8A-8D illustrate various views of an exemplary noise-dampening device according to some embodiments of the present disclosure; Fig. Figures 9A-9E illustrate an exemplary connection between a noise-dampening device and a main body of a ventilator according to some embodiments of the present disclosure; Fig. Figures 10A-10C illustrate exemplary exploded views of a noise reduction device according to some embodiments of the present disclosure; Fig. 11A-11F illustrate an exemplary connection between a gas pressurization unit and a noise reduction box according to some embodiments of the present disclosure; Fig. 12A-12C illustrate an exemplary gas pressure impingement unit according to some embodiments of the present disclosure; Fig. 13A and Fig. 13B illustrates an exemplary connecting piece according to some embodiments of the present disclosure; Fig. 14A and Fig. 14B illustrates an exemplary ventilator with a gas parameter sensing arrangement according to some embodiments of the present disclosure; Fig. 15A and Fig. 15B illustrate an interior of an exemplary ventilator with a gas parameter detection arrangement according to some embodiments of the present disclosure; Fig. 16A-16D illustrate an exemplary sensing component of a gas parameter sensing arrangement and / or a flow sensing device according to some embodiments of the present disclosure; Fig. 17 illustrates an exemplary ventilator according to some embodiments of the present disclosure; Fig. 18A and Fig. 18B Exploded views of an exemplary liquid chamber according to some embodiments of the present disclosure are shown; Fig. 19 illustrates an exemplary push-push mechanism in conjunction with a liquid chamber of a ventilator according to some embodiments of the present disclosure; Fig. 20A and Fig. 20B illustrate an exemplary push-push mechanism according to some embodiments of the present disclosure; Fig. 21A and Fig. 21B illustrates an exemplary method for attaching a liquid chamber to a main body of a ventilator by means of a push-push mechanism according to some embodiments of the present disclosure; Fig. 21C and Fig. 21D illustrates an exemplary method for removing a liquid chamber from a main body of a ventilator by means of a push-push mechanism according to some embodiments of the present disclosure; Fig. 22A-22D illustrate an exemplary heating plate according to some embodiments of the present disclosure; Fig. 23A-23D illustrate an exemplary connection between a liquid chamber and a main body of a ventilator according to some embodiments of the present disclosure; Fig. 24 illustrates a further exemplary connection between a liquid chamber and a main body of a ventilator according to some embodiments of the present disclosure; Fig. 25 An exemplary connecting piece attached to a main body of a ventilator according to some embodiments of the present disclosure is illustrated; Fig. 26A-26C illustrate an exemplary connection between a liquid chamber and a main body of a ventilator according to some embodiments of the present disclosure; Fig. 27 An exemplary connection between a connecting piece and a connecting plate of a tank cap when the tank cap is closed is illustrated according to some embodiments of the present disclosure; Fig. 28A-28E illustrate exemplary threaded hoses of a connector according to some embodiments of the present disclosure; Fig. 29A-29D show an exemplary base plate of a ventilator according to some embodiments of the present disclosure; Fig. 30A and Fig. 30B shows an exemplary liquid chamber of a ventilator according to some embodiments of the present disclosure; Fig. 31 shows an exemplary tank lid of a liquid chamber of a ventilator according to some embodiments of the present disclosure; Fig. 32A-32C illustrate an exemplary tank of a liquid chamber of a ventilator according to some embodiments of the present disclosure; Fig. 33A and Fig. 33B illustrates an exemplary tank according to some embodiments of the present disclosure; Fig. 34A and Fig. 34B illustrates an exemplary tank cap according to some embodiments of the present disclosure; Fig. 35A and Fig. 35B illustrate a connection between a protruding column of a first connecting piece of a tank and a groove of a second connecting piece of a tank lid according to some embodiments of the present disclosure; Fig. 36A and Fig. 36B illustrates an exemplary connection between a tank and a tank lid of a liquid chamber according to some embodiments of the present disclosure; Fig. 37A and Fig. 37B illustrates an exemplary tank cap according to some embodiments of the present disclosure; Fig. 38 illustrates an exemplary outer shell according to some embodiments of the present disclosure; Fig. 39A and Fig. 39B illustrates an exemplary inner shell of a tank cap according to some embodiments of the present disclosure; Fig. 40 shows an exemplary base plate of an inner shell of a tank lid according to some embodiments of the present disclosure; Fig. 41A and Fig. 41B shows an exemplary internal structure of an inner shell of a tank cap according to some embodiments of the present disclosure; Fig. 42A and Fig. 42B illustrates a further exemplary tank cap according to some embodiments of the present disclosure; Fig. Figures 43A-43C illustrate exemplary electronic components in a main body of a ventilator according to some embodiments of the present disclosure; Fig. 44A and Fig. 44B illustrates an exemplary heating device according to some embodiments of the present disclosure; and Fig. 45 illustrates an exemplary liquid chamber according to some embodiments of the present disclosure. Detailed description

[0160] The following description is provided so that any person skilled in the art can create and use the present disclosure, and is provided in connection with a particular application and its requirements.

[0161] The terminology used herein serves only to describe certain exemplary embodiments and is not intended to be limiting. As used here, the singular forms "a", "an", and "the" may also include the plural forms unless the context expressly indicates otherwise. Furthermore, it is understood that the terms "comprise", "comprises", and / or "comprising", "include", "contains", and / or "containing" in the present disclosure specify the presence of the indicated features, integers, steps, processes, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, processes, elements, components, and / or groups thereof.

[0162] These and other features and characteristics of the present disclosure, as well as the functions and workings of the associated structural elements and the combination of parts and manufacturing advantages, may become clearer with reference to the following description and the accompanying drawings, all of which form part of the present disclosure. It should be expressly noted, however, that the drawings serve only for illustration and description and are not intended to limit the scope of the present disclosure. It is understood that the drawings are not to scale.

[0163] It is understood that the terms "system," "engine," "unit," and / or "module" used here represent a method for distinguishing between different components, elements, parts, sections, or assemblies at different levels in ascending order. However, these terms can be replaced by other expressions if they serve the same purpose.

[0164] It is understood that when a unit, motor, or module is described as being "powered on," "connected to," or "coupled with" another unit, motor, or module, it may be directly powered on, connected, or coupled to, or communicating with, the other unit, motor, or module, or there may be an intermediary unit, motor, or module, unless the context clearly indicates otherwise. As used here, the term "and / or" includes all combinations of one or more of the elements listed.

[0165] The term "environment" as used here refers to the exterior of System 100 and / or Subject 180, or to the environment surrounding System 100 and / or Subject 180. The term "ambient gas" as used here may refer to the gas on the exterior of System 100 and / or Subject 180, or to the gas in the environment surrounding System 100 and / or Subject 180. The term "ambient humidity" in relation to a humidifier may refer to the humidity of the gas surrounding the humidifier (e.g., the humidity in the room where the ventilator 110 and / or Subject 180 are located). The term "ambient pressure" may refer to the pressure surrounding or outside of Subject 180. The term "ambient noise" (e.g.,“acoustic noises)” may refer to the background noise level in the room in which the ventilator 110 and / or the subject 180 are located, with the exception, for example, of noises generated by the ventilator 110 or emanating from the subject interface 170.

[0166] The flowcharts used in this disclosure illustrate the operation implemented by systems according to some embodiments of this disclosure. It is expressly understood that the operation of the flowcharts need not be implemented in the order shown. Conversely, the operation may be implemented in reverse order or simultaneously. Furthermore, one or more additional operations may be added to the flowcharts. One or more operations may be omitted from the flowcharts.

[0167] Fig. Figure 1 is a schematic diagram illustrating an exemplary system for delivering a respiratory gas according to some embodiments of the present disclosure. In some embodiments, the respiratory gas may comprise natural air (or atmospheric air), purified air, oxygen, oxygen-enriched atmospheric air, a therapeutic drug, compressed air, humidified air, or the like, or a combination thereof. As shown, the system 100 may comprise a ventilator 110, a breathing tube 160, and a subject interface 170. In some embodiments, the ventilator 110 may be a non-invasive ventilator. In some embodiments, the system 100 may further comprise a network 120, a terminal 130, a processing device 140, and a storage device 150.It should be noted that one or more of the elements network 120, terminal 130, processing device 140, and storage device 150 can be omitted. The components in system 100 can be interconnected in one or more different ways. As shown in... Fig. As shown in Figure 1, for example, the ventilator 110 can be connected to the processing device 140 via the network 120. As another example, the ventilator 110 can be connected directly to the processing device 140, as indicated by the bidirectional arrow in dashed lines connecting the ventilator 110 and the processing device 140. As another example, the storage device 150 can be connected directly or via the network 120 to the processing device 140. As another example, the terminal 130 can be connected directly (as indicated by the bidirectional arrow in dashed lines between the terminal 130 and the processing device 140) or via the network 120 to the processing device 140. In this disclosure, the terms "ventilator" and "continuous positive airway pressure (CPAP) device" are used synonymously.

[0168] The ventilator 110 can be configured to detect, diagnose, treat, prevent, and / or alleviate respiratory diseases of a subject 180. In some embodiments, the ventilator 110 can deliver pressurized breathing gas to a subject 180 (e.g., the nose and / or mouth of the subject 180). In some embodiments, the ventilator 110 can include a gas inlet 112 and a gas outlet 111. The gas inlet 112 can be configured to introduce breathing gas into the ventilator 110. In some embodiments, the ventilator 110 can pressurize the breathing gas supplied through the gas inlet 112. In some embodiments, the gas outlet 111 can be connected to the breathing tube 160. The gas outlet opening 111 can be designed to release the pressurized breathing gas into the breathing tube 160.In some embodiments, the breathing tube 160 can be connected to the subject interface 170. Therefore, the pressurized breathing gas generated by the ventilator 110 can be delivered to the subject 180 via the breathing tube 160 and the subject interface 170. In some embodiments, the ventilator 110 can have one or more gas passages (in . Fig. (1 not shown) comprise components designed to direct the breathing gas so that it flows within the ventilator 110. Further descriptions of the ventilator 110 can be found elsewhere in the present disclosure (e.g., in Fig. 3A-3D and 5A-5E and their corresponding descriptions).

[0169] In some embodiments, the ventilator 110 may further comprise one or more controllers. The controllers may be connected directly or via a network (e.g., a wired network, a wireless network) to one or more components of the ventilator 110. The controllers may control the operation of one or more components of the ventilator 110. In some embodiments, the controller(s) may be configured to initialize the ventilator 110 during a startup process. For example, the controller(s) may start a working memory of the ventilator 110, read one or more parameters from one or more storage devices 150 (e.g., non-volatile memory) of the ventilator 110, and / or start the detection module 250.In some embodiments, the parameters may include at least one parameter used to control the pressure of the pressurized breathing gas. In some embodiments, the control unit(s) may be configured to start a program that continuously reads information from the detection module 250 and controls the pressure of the pressurized breathing gas using at least the information read from the detection module 250 and one or more parameters.

[0170] In some embodiments, the ventilator 110 may further include or be equipped with one or more sensors configured to detect parameters relating to the breathing gas, the exhaled gas of subject 180, and / or the operating status of the ventilator 110. Parameters relating to the breathing gas may include, for example, the flow rate, temperature, humidity, or a combination thereof. Parameters relating to the exhaled gas of subject 180 may include snoring, respiratory rate, tidal volume, pressure, air leakage, autonomous breathing, or a combination thereof.The parameters relating to the operating status of the ventilator 110 may include a runtime of the ventilator 110, a delay time for pressurizing the breathing gas, an air loss of the pressurized breathing gas, an input voltage of the gas pressure control unit 210 or the like, or a combination thereof.

[0171] In some embodiments, the ventilator 110 may further include or be equipped with one or more gas filter units configured to filter and / or purify the breathing gas supplied to the subject 180. In some embodiments, the gas filter unit(s) (e.g., a coarse filter, a fine filter, or the like) may filter one or more particles in the breathing gas. In some embodiments, the gas filter units may filter bacteria in the breathing gas. In some embodiments, the gas filter units may filter pungent gases in the breathing gas.

[0172] In some embodiments, subject 180 may be a healthy person. In some embodiments, subject 180 may be a patient. In some embodiments, the patient may have one or more respiratory disorders. In some embodiments, the respiratory disorders may be characterized by apneas, hypopneas, hyperpneas, or the like. Examples of respiratory disorders include obstructive sleep apnea (OSA), Cheyne-Stokes respiration (CSR), obesity hyperventilation syndrome (OHS), chronic obstructive pulmonary disease (COPD), neuromuscular disorders (NMD), chest wall disorders, or the like. Obstructive sleep apnea (OSA) is a form of sleep-related breathing disorder and can cause the affected patient to stop breathing for one or more periods (e.g., 30 to 120 seconds or 200 to 300 times per night).Cheyne-Stokes respiration (CSR) is another form of sleep-related breathing disorder and can be harmful due to repeated hypoxia. Obesity hyperventilation syndrome (OHS) is defined as the combination of severe obesity and chronic hypercapnia while awake and can cause dyspnea, morning headaches, excessive daytime sleepiness, or similar symptoms. Chronic obstructive pulmonary disease (COPD) can involve increased resistance to airflow, a prolonged exhalation phase, or loss of normal lung elasticity, or similar symptoms. COPD can lead to shortness of breath on exertion, chronic cough, sputum production, or similar symptoms. Neuromuscular disorders (NMD) can include diseases and conditions that affect muscle function either directly through intrinsic muscle pathology or indirectly through neurological pathology.Neuromuscular disorders (NMD) can lead to increasing general weakness, dysphagia, dyspnea on exertion and at rest, fatigue, drowsiness, morning headaches, difficulty concentrating, mood swings, or similar symptoms. Chest wall disorders are a group of thoracic deformities that result in inefficient coupling between the respiratory muscles and the rib cage. Chest wall disorders can cause exertional dyspnea, peripheral edema, orthopnea, recurrent chest infections, morning headaches, fatigue, poor sleep quality, loss of appetite, or similar symptoms.

[0173] In some embodiments, the subject interface 170 can be configured to connect the ventilator 110 to the subject 180, for example, by providing a flow of respiratory gas (e.g., air). In some embodiments, the subject interface 170 can include a gas passage for directing the respiratory gas. The subject interface 170 can include a mask, a tube, or the like. For example, the subject interface 170 can be a nasal mask, a full-face mask, a tube connected to the mouth of the subject 180, or a tracheostomy tube connected to the trachea of ​​the subject 180. In some embodiments, the subject interface 170 can form a tight connection with a facial area of ​​the subject 180 to facilitate the delivery of the respiratory gas at a pressure that deviates sufficiently from ambient pressure to effect therapy (e.g., an overpressure of about 10 cmH2O).For example, the subject interface 170 can be attached to the nose of the subject 180 by various fastening methods (e.g., by a fastening rope or a fastening ring). In some embodiments, the subject interface 170 may not form a tight connection with a facial area of ​​the subject 180 sufficient to facilitate the supply of breathing gas to the subject 180 at an overpressure of about 10 cmH2O. In some embodiments, the subject interface 170 may further comprise a filter configured to filter the breathing gas. Further descriptions of the filter are provided elsewhere in the present disclosure (e.g., in ). Fig. 6A-6E, 7A and 7B and the associated descriptions). In some embodiments, the subject interface 170 may further comprise or be equipped with one or more sensors configured to detect parameters relating to the breathing gas and / or the exhaled gas of the subject 180. In some embodiments, the subject interface 170 may further comprise or be equipped with one or more gas filter units configured to filter and / or purify the breathing gas supplied to the subject 180. In some embodiments, the gas filter unit(s) (e.g., a coarse filter, a fine filter, or the like) may filter one or more particles in the breathing gas. In some embodiments, the gas filter unit(s) may filter bacteria in the breathing gas. In some embodiments, the gas filter unit(s) may filter pungent gases in the breathing gas.

[0174] In some embodiments, the breathing tube 160 can be configured to conduct the breathing gas from the ventilator 110 to the subject interface 170. The breathing tube 160 can include a gas passage for conducting the breathing gas. In some embodiments, the breathing tube 160 can form a sealed connection with the gas outlet port 111 of the ventilator 110. In some embodiments, the breathing tube 160 can form a sealed connection with the subject interface 170. In some embodiments, the breathing tube 160 can further include a heating device configured to heat the breathing tube 160 so that the breathing gas flowing through the breathing tube 160 can be maintained at a specific temperature, preferably at a temperature that is comfortable for humans, for example, a temperature between 16 and 43 °C or a temperature between 28 and 38 °C.In some embodiments, the breathing tube 160 may further include or be equipped with one or more sensors configured to detect parameters relating to the breathing gas and / or the exhaled gas of the subject 180. In some embodiments, the breathing tube 160 may further include or be equipped with one or more gas filter units configured to filter and / or purify the breathing gas supplied to the subject 180. In some embodiments, the gas filter unit (e.g., a coarse filter, a fine filter, or the like) may filter one or more particles in the breathing gas. In some embodiments, the gas filter unit may filter bacteria in the breathing gas. In some embodiments, the gas filter unit may filter pungent gases in the breathing gas.

[0175] In some embodiments, the network 120 can comprise any suitable network that can facilitate the exchange of information and / or data for the system 100. In some embodiments, one or more components of the system 100 (e.g., the ventilator 110, the terminal 130, the processing device 140, or the storage device 150) can exchange information and / or data with one or more other components of the system 100 via the network 120. For example, the processing device 140 can receive signals from the ventilator 110 via the network 120. As another example, the processing device 140 can receive user instructions from the terminal 130 via the network 120. In some embodiments, the network 120 can be any type of wired or wireless network, or a combination thereof. The network 120 can be a public network (e.g., the internet), a private network (e.g., a network), or a network of shared devices.A local area network (LAN), a wide area network (WAN), etc., a wired network (e.g., an Ethernet network), a wireless network (e.g., an 802.11 network, a Wi-Fi network, etc.), a cellular network (e.g., a Long Term Evolution (LTE) network), a frame relay network, a virtual private network (VPN), a satellite network, a telephone network, routers, hubs, switches, server computers, and / or any combination thereof. For example only, Network 120 could include a cable network, a landline, a fiber optic network, a telecommunications network, an intranet, a wireless local area network (WLAN), a man-city network (MAN), a public switched telephone network (PSTN), a Bluetooth™ network, a ZigBee™ network, a near field communication (NFC) network, or similar, or any combination thereof. In some embodiments, the network 120 can include one or more network access points.For example, the network 120 can include wired and / or wireless network access points such as base stations and / or internet nodes, through which one or more components of the system 100 can be connected to the network 120 to exchange data and / or information.

[0176] In some embodiments, the terminal 130 may comprise a mobile device 130-1, a tablet computer 130-2, a laptop computer 130-3, or the like, or any combination thereof. In some embodiments, the mobile device 130-1 may comprise a smart home device, a portable device, an intelligent mobile device, a virtual reality device, an augmented reality device, or the like, or any combination thereof. In some embodiments, the smart home device may comprise an intelligent lighting device, a control unit for an intelligent electrical device, an intelligent surveillance device, an intelligent video camera, an intercom system, or the like, or any combination thereof.In some embodiments, the wearable device may include a smart bracelet, smart footwear, smart glasses, a smart helmet, a smartwatch, smart clothing, a smart backpack, a smart accessory, or the like, or any combination thereof. In some embodiments, the smart mobile device may include a smartphone, a personal digital assistant (PDA), a gaming device, a navigation device, a point-of-sale (POS) device, or the like, or any combination thereof. In some embodiments, the virtual reality device and / or the augmented reality device may include a virtual reality helmet, virtual reality glasses, a virtual reality patch, an augmented reality helmet, augmented reality glasses, an augmented reality patch, or the like, or any combination thereof.For example, the virtual reality device and / or the augmented reality device can include Google Glass, Oculus Rift, HoloLens, Gear VR, etc. In some embodiments, the terminal 130 can remotely control the ventilator 110. In some embodiments, the terminal 130 can control the ventilator 110 via a wireless connection. In some embodiments, the terminal 130 can receive information and / or instructions entered by a user and send the received information and / or instructions to the ventilator 110 or to the processing device 140 via the network 120. In some embodiments, the terminal 130 can receive data and / or information from the processing device 140. In some embodiments, the terminal 130 can display information relating to the system 100. In some embodiments, the terminal 130 can be part of the processing device 140.In some embodiments, the terminal 130 can be omitted. In some embodiments, a user can remotely update the software of the ventilator 110 and / or adjust or set one or more parameters of the ventilator 110 via the terminal 130.

[0177] In some embodiments, the processing device 140 can process data and / or information received from the ventilator 110, the terminal 130, and / or the storage device 150. For example, the processing device 140 can acquire signals detected by one or more sensors in the ventilator 110, the breathing tube 160, and / or the subject interface 170, and process and / or analyze the signals to obtain one or more parameters relating to the respiratory gas, the exhaled gas of the subject 180, and / or the operational status of the ventilator 110. In some embodiments, the processing device 140 can be a single server or a group of servers. The server group can be centralized or distributed. In some embodiments, the processing device 140 can be local or remote.For example, the processing device 140 can access information and / or data stored in the respiratory pressure therapy device 110, the terminal 130, and / or the storage device 150 via the network 120. As another example, the processing device 140 can be directly connected to the ventilator 110, the terminal 130, and / or the storage device 150 to access stored information and / or data. In some embodiments, the processing device 140 can be implemented on a cloud platform. The cloud platform can include, for example, a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an inter-cloud, a multi-cloud, or any combination thereof. In some embodiments, the processing device 140 can be implemented on a computing device of the ventilator 110.

[0178] In some embodiments, the processing device 140 may comprise a sensor unit and a processing unit. The sensor unit may be configured to receive information about the system 100 (e.g., the ventilator 110, the processing device 140, the storage device 150, the terminal 130, etc.). The information may include signals received by the sensor module 250, data read from the storage device 150, instructions or data provided by the terminal 130, etc. In some embodiments, the information may be transmitted to the processing unit for processing. In some embodiments, the sensor unit may receive or transmit the information via a physical transmission medium or a carrier wave transmission medium. The physical transmission medium may include, for example, a coaxial cable, a copper wire, an optical fiber, or the like.The carrier wave transmission medium can take the form of electrical or electromagnetic signals (e.g., signals generated during radio frequency (RF) data communication). The processing device can be configured to process the information received from the acquisition unit. The processing device can include an Advanced RISC Machines (ARM) processor, a programmable logic device (PLD), a microprogrammed control unit (MCU), a digital signal processor (DSP), a field-programmable gate array (FPGA), a system-on-a-chip (SoC), or any combination thereof.

[0179] In some embodiments, the storage device 150 can store data and / or instructions. In some embodiments, the storage device 150 can store data or information received from the ventilator 110. For example, the processing device 140 can determine one or more parameters relating to the respiratory gas, the exhaled gas of the subject 180, and / or the operating status of the ventilator 110, based on signals received from one or more sensors of the ventilator 110, the breathing tube 160, and / or the subject interface 170. The determined parameter(s) can be stored in the storage device 150 for further use or processing. In some embodiments, the storage device 150 can store data received from the terminal 130 and / or the processing device 140.In some embodiments, the storage device 150 can store data and / or instructions that the processing device 140 can execute or use to perform exemplary procedures described in the present disclosure. In some embodiments, the storage device 150 can comprise a mass storage device, a removable storage device, volatile read / write memory, read-only memory (ROM), or the like, or any combination thereof. Examples of mass storage devices are magnetic disks, optical disks, solid-state drives, etc. Examples of removable storage devices are flash drives, floppy disks, optical disks, memory cards, Zip disks, magnetic tapes, etc. Examples of volatile read / write memory are random access memory (RAM).Examples of RAM include dynamic RAM (DRAM), synchronous dynamic RAM with double data rate (DDR SDRAM), static RAM (SRAM), thyristor RAM (T-RAM), and capacityless RAM (Z-RAM), etc. Examples of ROMs include mask ROMs (MROMs), programmable ROMs (PROMs), erasable programmable ROMs (PEROMs), electrically erasable programmable ROMs (EEPROMs), compact disk ROMs (CD-ROMs), and digital versatile disk ROMs, etc. In some embodiments, the storage device 150 may be implemented on a cloud platform. The cloud platform may include, for example, a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an inter-cloud, a multi-cloud, or any combination thereof.

[0180] In some embodiments, the storage device 150 can be connected to the network 120 to communicate with one or more components in the system 100 (e.g., the ventilator 110, the processing device 140, the terminal 130, etc.). One or more components in the system 100 can access the data or instructions stored in the storage device 150 via the network 120. In some embodiments, the storage device 150 can be directly connected to or communicate with one or more components in the system 100 (e.g., the ventilator 110, the processing device 140, the terminal 130, etc.). In some embodiments, the storage device 150 can be part of the processing device 140. In some embodiments, the storage device 150 can be part of the ventilator 110.

[0181] Fig. Figure 2 is a block diagram illustrating an exemplary ventilator 110 according to some embodiments of the present disclosure. As shown in Figure 2, the ventilator 110 may comprise a gas pressurization unit 210, a humidification device 220, a gas filter component 230, a noise reduction device 240, a sensing module 250, a control module 260, and one or more peripheral devices 270.

[0182] The gas pressurization unit 210 can be configured to pressurize the breathing gas introduced into the ventilator 110. In some embodiments, the gas pressurization unit 210 can generate a pressurized breathing gas based on an ambient gas (e.g., atmospheric air) introduced into the ventilator 110. In some embodiments, the gas pressurization unit 210 can provide a pressurized breathing gas for the subject 180. In some embodiments, the gas pressurization unit 210 can include a blower (e.g., a motor-driven blower). In some embodiments, the gas pressurization unit 210 can include a pressurized gas cylinder. In some embodiments, when the blower is running, the breathing gas (e.g. ambient gas) can be drawn successively into the ventilator 110 via the gas inlet opening 112 and then pressurized.The pressurized breathing gas generated by the gas pressurization unit 210 can be discharged via the gas outlet opening 111 to the breathing tube 160. In some embodiments, the gas pressurization unit 210 can be controlled by the control unit(s) of the ventilator 110. For example, the starting, operation (e.g., the speed), and / or stopping of the gas pressurization unit 210 can be controlled (and / or set) by the control unit(s) of the ventilator 110.

[0183] The humidification device 220 can be configured to humidify the (pressurized) breathing gas. In some embodiments, the humidification device 220 can humidify the (pressurized) breathing gas by introducing water vapor into the (pressurized) breathing gas. In some embodiments, the humidification device 220 can include a liquid chamber 222 and / or a heating device 224. The liquid chamber 222 can be configured to hold one or more liquids (e.g., water). The heating device 224 can be configured to heat the one or more liquids held in the liquid chamber 222 and / or to generate water vapor in a temperature range of, for example, 30 to 50 degrees Celsius. The water vapor can be introduced into the (pressurized) breathing gas, thereby humidifying the (pressurized) breathing gas.In some embodiments, the liquid chamber 222 may include a tank and / or a tank lid. The tank may be configured to hold one or more liquids. The tank lid may be configured to introduce (pressurized) breathing gas onto the surface of the one or more liquids and / or introduce humidified (pressurized) breathing gas from the liquid chamber 222. In some embodiments, the tank lid may include a housing, a gas inlet port configured to introduce the (pressurized) breathing gas into the liquid chamber 222 via a first gas passage, and / or a gas outlet port configured to introduce the humidified (pressurized) breathing gas back into the ventilator 110 via a second gas passage.In some embodiments, the heating device 224 may comprise a heating plate, one or more heating rods, one or more heating electrodes or the like, or any combination thereof, which are mounted under a base plate of the tank or inside the tank.

[0184] In some embodiments, the humidification device 220 can humidify the (pressurized) breathing gas by introducing one or more water droplets into the (pressurized) breathing gas. In some embodiments, the humidification device 220 can comprise a liquid chamber 222 and / or an ultrasonic atomizer (e.g., a ceramic membrane) not shown. The ceramic membrane can be controlled by the control(s) of the ventilator 110 to vibrate at an ultrasonic frequency to generate a plurality of water droplets. The water droplets can be introduced into the (pressurized) breathing gas, whereupon the (pressurized) breathing gas can be humidified. Further descriptions of the humidification device 220 can be found elsewhere in the present disclosure (e.g., in Fig. 17-22D, 30A-36B and the associated descriptions).

[0185] The gas filter component 230 can be configured to filter the breathing gas introduced into the ventilator 110. In some embodiments, the gas filter component 230 can filter the pressurized breathing gas delivered from the gas pressure unit 210. In some embodiments, the gas filter component 230 can comprise a housing. In some embodiments, the housing of the gas filter component 230 can be detachably connected to the gas inlet opening 112 of the ventilator 110. In some embodiments, the gas filter component 230 can comprise a plurality of gas filter units. In some embodiments, one or more of the gas filter units can be located in the housing. In some embodiments, one or more of the gas filter units can be located at any other location on the ventilator 110, the breathing tube 160, and / or the subject interface 170.In some embodiments, one or more of the gas filter units can be configured to filter the breathing gas entering the ventilator 110. In some embodiments, one or more of the gas filter units can be configured to filter the breathing gas entering the gas pressurization unit 210. In some embodiments, one or more of the gas filter units can be configured to filter the pressurized breathing gas flowing from the gas pressurization unit 210. In some embodiments, one or more of the gas filter units can be configured to filter the pressurized breathing gas entering the humidification device 220. In some embodiments, one or more of the gas filter units can be configured to filter the humidified and pressurized breathing gas flowing from the humidification device 220.

[0186] In some embodiments, the gas filter component 230 may comprise one or more ultrafine filter units located outside the gas inlet opening 112, one or more gas filter units located inside the gas inlet opening 112, or one or more gas filter units with an antibacterial membrane or an odor-elimination membrane in the gas passage(s) of the ventilator 110, the breathing tube 160 and / or the subject interface 170.

[0187] By way of example, the gas filter component 230 may, in some embodiments, comprise a first gas filter unit. The first gas filter unit may be a coarse filter. In some embodiments, the gas filter component 230 may comprise a second gas filter unit. The second gas filter unit may be a fine filter. In some embodiments, the gas filter component 230 may comprise a third gas filter unit. The third gas filter unit may be located within the gas inlet opening 112 of the ventilator 110. The third gas filter unit may be configured to filter ambient gas entering the ventilator 110. In some embodiments, the third gas filter unit may comprise a coarse filter and / or a fine filter. In some embodiments, the gas filter component 230 may comprise a fourth gas filter unit.The fourth gas filter unit can be configured to filter one or more pungent gases (also referred to as acrid gases) in one or more gas passages of the ventilator 110. In some embodiments, the fourth gas filter unit can comprise a membrane made of one or more adsorbent nanomaterials (e.g., activated carbon, graphene, etc.). In some embodiments, the gas filter component 230 can comprise a fifth gas filter unit. The fifth gas filter unit can be configured to filter bacteria in one or more gases in one or more gas passages of the ventilator 110, the breathing tube 160, and / or the subject interface 170. Further descriptions of the gas filter component 230 are provided elsewhere in the present disclosure (e.g., in ). Fig. 6A-7B and the corresponding descriptions).

[0188] The noise-reducing device 240 can be configured to reduce the noise generated by the operation of the gas pressurization unit 210 (e.g., a blower) and / or the flow of the breathing gas. In some embodiments, the noise-reducing device 240 can include a noise-reducing box in which the gas pressurization unit 210 is housed. In some embodiments, the noise-reducing box can include one or more sound-absorbing materials attached to the inner walls of the noise-reducing box. In some embodiments, the noise-reducing box can include one or more frames configured to fix the one or more sound-absorbing materials.Examples of sound-absorbing materials may include organic fibers, inorganic fibers, inorganic foam, foam plastic, or the like, or any other material with the function of sound absorption. Further descriptions of the noise-dampening device 240 can be found elsewhere in the present disclosure (e.g., in ). Fig. 8A-11F and the associated descriptions).

[0189] The acquisition module 250 can be configured to acquire one or more parameters relating to the system 100 (e.g., the ventilator 110, the subject 180). Example parameters may include the flow rate of the respiratory gas, the flow rate of the respiratory gas, the temperature of the respiratory gas, the humidity of the respiratory gas, snoring by the subject 180, the respiratory rate of the subject 180, the tidal volume of the subject 180, or the like, or a combination thereof. In some embodiments, the parameters may include the operating status of the ventilator 110 (e.g., the operating time of the ventilator 110, the delay time for pressurizing the respiratory gas, air leakage from the pressurized respiratory gas, the input voltage of the gas pressurization unit 210, or the like).

[0190] In some embodiments, the detection module 250 may include one or more sensors configured to detect the parameter(s). Examples of such sensors include a flow sensor, a pressure sensor, a humidity sensor, a temperature sensor, a timer, etc. For example, the detection module 250 may include a snoring detection device (e.g., a pressure sensor) (see Fig. 15A and Fig. 15B) which is configured to detect the snoring of a user of the ventilator 110 (e.g., subject 180). As another example, the detection module 250 can include a flow detection assembly (see Fig. 15A and Fig. 15B) which is configured to detect a flow of one or more gases in one or more passes of the ventilator 110. In some embodiments, the detection module 250 may further include a liquid level detection device (e.g., a liquid level sensor) configured to detect the liquid level in the tank of the liquid chamber 222.

[0191] The control module 260 can be configured to control the operation of the components of the system 100 (e.g., the gas pressurization unit 210, the humidification device 220, the gas filter component 230, the detection module 250, the processing device 140, the storage device 150, the terminal 130, or the like). In some embodiments, the control module 260 can be configured to initialize the ventilator 110 during a startup process. For example, the control module 260 can load a bootstrap program from the storage device 150, load a user program from the storage device 150, or initiate one or more peripheral devices of the control module 260 (e.g., a communication interface, a timer, an A / C acquisition interface, an indicator light, a button, a knob, a power switch, etc.).), initiate one or more sensors, initiate the gas pressure control unit 210, initiate one or more configuration parameters, and / or initiate one or more treatment parameters. As another example, the control module 260 can initiate a direct access memory of the ventilator 110, read one or more parameters from the storage device 150 (e.g., non-volatile memory) of the ventilator 110, and / or initiate the detection module 250. In some embodiments, the control module 260 can be configured to initiate a program that continuously reads information from the detection module 250 and controls the pressure of the pressurized breathing gas using at least the information read from the detection module 250 and one or more of the parameters. In some embodiments, the control module 260 can cause the sensor(s) to read one or more parameters (e.g.,The control module 260 detects the pressure of the pressurized breathing gas and / or adjusts the rotational speed of the gas pressurization unit 210 to maintain the detected pressure of the pressurized breathing gas within a predetermined range. In some embodiments, the control module 260 can, in response to an abnormal condition determined by comparing the current state of the ventilator 110 with the multiple parameters read from the memory device 150, cause the ventilator 110 to issue a warning or reminder to a user. In some embodiments, the current state of the ventilator 110 can include the pressure of the breathing gas.In some embodiments, the parameters read from the storage device 150 can include one or more threshold values ​​relating to an upper limit of pressure, an upper limit of air leakage of the pressurized breathing gas, a lower limit of air leakage of the pressurized breathing gas, a lower limit of respiratory rate, or a lower limit of input voltage of the ventilator 110, or the like. In some embodiments, the control module 260 can adjust the rotational speed of the gas pressurization unit 210 so that the breathing gas is pressurized with a delay after the ventilator 110 is started.

[0192] The control module 260 can be implemented as a software and / or hardware module (e.g., a controller) and stored on any non-volatile, computer-readable medium or other storage device. For example, the control module 260 can be stored in the processing device 140. In some embodiments, a software module can be compiled and linked to form an executable program. It is understood that software modules can be called by other modules or by themselves and / or in response to detected events or interruptions. Software modules designed for execution on computer devices (e.g.,Software configured in a processor of the processing device 140) can be provided on a computer-readable medium, such as a compact disc, a digital video disc, a flash drive, a magnetic disk, or other tangible medium, or as a digital download (and may initially be stored in a compressed or installable format that requires installation, decompression, or decryption before execution). Such software code may be stored partially or entirely on a storage device of the executing computer device for execution by that computer device. Software instructions may be embedded in firmware, such as an EPROM. It is further understood that hardware modules may consist of interconnected logic units, such as gates and flip-flops, and / or programmable units, such as programmable gate arrays or processors.The modules or functions of computing devices described here can be implemented as software modules and represented in hardware or firmware. Generally, the modules described here refer to logical modules that, despite their physical organization or storage, can be combined with other modules or subdivided into submodules. In some embodiments, the control module 260 or the controllers may comprise signal processing circuits, memory circuits, one or more processors, a single-chip microcomputer, or the like, or a combination thereof. In some embodiments, at least one section of the control module 260 or the controllers may be integrated into one or more printed circuit boards of the ventilator 110.

[0193] The peripheral device 270 can be configured to facilitate the operation or use of the ventilator 110. In some embodiments, the peripheral device 270 may include the breathing tube 160, the subject interface 170, or the like, or a combination thereof. Further descriptions of the peripheral device 270 are provided elsewhere in the present disclosure (e.g., in Fig. 1 and the accompanying descriptions).

[0194] It should be noted that the above description of the ventilator 110 serves only for illustrative purposes and is not intended to limit the scope of this disclosure. For persons with average technical knowledge, numerous variations and modifications are possible, taking into account the lessons of this disclosure.

[0195] In some embodiments, the ventilator 110 may include one or more additional modules, units, assemblies, devices or the like.

[0196] For example, the ventilator 110 may include a storage module configured to store data generated during the operation of the ventilator 110.

[0197] As another example, the ventilator 110 can include one or more UV lamps arranged in one or more gas passages of the ventilator 110, the breathing tube 160, and / or the subject interface 170. The UV lamp(s) can be configured to sterilize one or more gases flowing in the ventilator 110, one or more gas passages in the ventilator 110, or one or more components of the ventilator 110 (e.g., the humidification device 220), or the like.

[0198] As another example, the ventilator 110 may include one or more display fields configured to show information relating to the system 100.

[0199] As another example, the ventilator 110 can include a communication module configured to exchange information with the processing device 140, the terminal 130, etc. The communication module can be connected to a network (e.g., network 120) to facilitate data communication. The communication module can establish connections between the processing device 140 and the ventilator 110, the terminal 130, or the storage device 150. The connection can be wired, wireless, or a combination of both, enabling the transmission and reception of data. The wired connection can include an electrical cable, an optical cable, a telephone cable, or any combination thereof. The wireless connection can be Bluetooth, Wi-Fi, WiMAX, WLAN, ZigBee, or a network (e.g., 3G, 4G, 5G, etc.).) or the like, or a combination thereof. In some embodiments, the communication module may include a standardized communication interface, such as RS232, RS485, etc. In some embodiments, the communication module may include a specially designed communication interface.

[0200] As another example, the ventilator 110 can include a remote control unit. The remote control unit can be configured to remotely control the ventilator 110. A user (e.g., subject 180) can operate the ventilator 110 via the remote control unit without physically touching one or more components of the ventilator 110 (e.g., the on / off button 311, the display panel 312, the rotary knob 313, the home button 314, or the like, as described in Fig. 3 shown) to have to adjust.

[0201] In some embodiments, one or more components of the ventilator 110 can be omitted. For example, the heating device 224 can be omitted and / or replaced by an ultrasonic nebulizer. As another example, the humidifying device 220 can be omitted. As yet another example, the gas filter component 230 can be omitted.

[0202] Fig. Figures 3A-3D show an exemplary ventilator according to some embodiments of the present disclosure. Fig. 3A shows a front view of the ventilator 300. Fig. Figure 3B shows the back of the ventilator 300. Fig. Figure 3C shows another rear view of the ventilator 300. Fig. 3D shows the main components of the ventilator 300. As shown in the Fig. As shown in 3A-3D, the ventilator 300 can comprise a main body 310 and a fluid chamber 320.

[0203] As in Fig. As shown in Figure 3A, the main body 310 of the ventilator 300 can include an on / off button 311, a display panel 312, a rotary knob 313, a home button 314, or the like. The on / off button 311 can be configured to switch the ventilator 300 between a start state and a shutdown state. For example, if the ventilator 300 is off, a user (e.g., subject 180) can press the on / off button 311 to start the ventilator 300. Another example: If the ventilator 300 is on, the user (e.g., subject 180) can press the on / off button 311 to turn the ventilator 300 off. The display panel 312 can be configured to display information about the ventilator 300. The displayed information may include, for example, parameters relating to the breathing gas, the exhaled gas of subject 180 and / or the operating status of the ventilator 110.Further descriptions of the parameters can be found elsewhere in the present disclosure (e.g. in ). Fig. 1 and the associated descriptions). In some embodiments, the display field 312 can be configured as the software user interface of the ventilator 110. In some embodiments, the display field 312 can be a touch panel.

[0204] The rotary knob 313 can be configured to facilitate a user's (e.g., subject 180's) adjustment and / or setting of the value(s) of one or more of the parameters shown above and / or a menu item of the software implemented in the ventilator 110. In some embodiments, the rotary knob 313 can be turned and / or pressed. For example, subject 180 can turn the knob 313 to adjust the value(s) of the breathing gas pressure, the humidity of the breathing gas, etc. As another example, subject 180 can press the knob 313 to confirm a set (or defined) parameter, select a menu item, exit a functional interface, etc. As yet another example, subject 180 can press and hold the knob 313 (or press it twice briefly) to access a physician interface.In the physician interface, a physician can set and / or configure one or more parameters related to the ventilator 110. The Home button 314 can be pressed to switch to a main software interface. In some embodiments, the Home button 314 can be pressed and held to mute the hardware and / or software of the ventilator 110. One or more of the following buttons—the On / Off button 311, the Display Panel 312, the Rotary Knob 313, and the Home button 314—may be located on the front, back, top, left side, or right side of the ventilator 300.

[0205] As in Fig. As shown in Figure 3A, the liquid chamber 320 can include a tank 322 and a tank lid 321. The liquid chamber 320 can be detachably connected to the main body 310 of the ventilator 300 (see Figure 3A). Fig. 3D). In some embodiments, the liquid chamber 320 can be detachably connected to the main body 310 of the ventilator 300. A user (e.g., the subject 180) can remove the liquid chamber 320 from the ventilator 300 to facilitate filling the tank 322 with liquid, changing the liquid in the tank 322, washing the tank 322, and / or sterilizing the liquid chamber 320. Further descriptions of the liquid chamber 320 are provided elsewhere in the present disclosure (e.g., in Fig. 18A, Fig. 18B, Fig. 23A, Fig. 26B, Fig. 30A, Fig. 30B, Fig. 36A and Fig. 36B and the accompanying descriptions). As in Fig. As shown in Figure 3A, the liquid chamber 320 is arranged on the right side of the main body 310 for illustrative purposes. It should be noted that in some embodiments the liquid chamber 320 may be arranged on the left side of the main body 310.

[0206] As in Fig. As shown in Figure 3B, the ventilator 300 can include a gas inlet port 332 and a gas outlet port 331. In some embodiments, the main body 310 of the ventilator 300 can include a housing. The housing can include a first side wall (e.g., the interface between the main body 310 and the fluid chamber 320) and a second side wall (e.g., the rear). The first side wall can be configured to discharge the pressurized breathing gas. The gas inlet port 332 can be located on the main body 310. In some embodiments, the gas inlet port 332 can be located on the second side wall of the housing of the main body 310 of the ventilator 300. In some embodiments, the gas inlet port 332 can be located on the front, rear, or top of the ventilator 300.In some embodiments, the gas inlet opening 332 can be arranged on one side of the ventilator 300 opposite the liquid chamber 320. As shown in . Fig. 3A and Fig. As shown in Figure 3B, the gas inlet opening 332 can be located on the left side of the ventilator 300, since the liquid chamber 320 is located on the right side of the main body 310. Fig. In 3B, the gas outlet opening 331 is arranged on the main body 310. The gas outlet opening 331 can be located on the same side of the ventilator 300 as the gas inlet opening 332. In some embodiments, the gas outlet opening 331 and the gas inlet opening 332 can be located on opposite sides of the ventilator 300. In some embodiments, the gas outlet opening 331 can be located on the liquid chamber 320. In some embodiments, the ventilator 300 can include or be equipped with one or more gas filter units (e.g., a coarse filter, a fine filter, or the like) within the gas inlet opening 332 to filter the breathing gas entering the gas inlet opening 332.

[0207] As in Fig. As shown in Figure 3C, the ventilator 300 can include a gas filter component 340. The gas filter component 340 can be configured to filter the respiratory gas entering the ventilator 300. The gas filter component 340 can be detachably connected to the gas inlet port 332 of the ventilator 300 (see Figure 3C). Fig. 3D). The gas filter component 340 can include a coarse filter and / or a fine filter (in Fig. (3A-3D not shown). Note that the gas filter component 340 may be optional. In some embodiments, the ventilator 300 may include the gas filter component 340, as shown in Fig. 3B shown, not included. As in Fig. In 3D representation, the liquid chamber 320 and / or the gas filter component 340 can be detachably connected to the main body 310 of the ventilator 300. Further descriptions of the gas filter component 340 can be found elsewhere in this disclosure (e.g., Fig. 6A-7B and the accompanying descriptions).

[0208] As in Fig. As shown in Figure 3C, the ventilator 300 can include a first interface 350, a second interface 360, and a third interface 370. The first interface 350 can be configured to supply power to the heating device 224 of the ventilator 300. The second interface 360 ​​can be configured as an interface for software upgrades and / or reading (or transmitting) data. The third interface 370 can be configured to supply power to the ventilator 300.

[0209] Fig. Figure 4 illustrates an exemplary process for the delivery of a breathing gas according to some embodiments of the present disclosure. In some embodiments, one or more processes of the process described in Figure 4 can be combined. Fig. 4 of the depicted process 400 for the delivery of a breathing gas in which in Fig. System 100, as shown in Figure 1, can be implemented. For example, the system shown in Fig. The process 400 shown in Figure 4 is stored in the storage device 150 in the form of commands and called and / or executed by the processing device 140. As a further example, a section of the process 400 can be implemented on the ventilator 110. The operations of the process shown below are for illustrative purposes. In some embodiments, the process can be carried out with one or more additional operations not described and / or without one or more of the described operations. Furthermore, the order in which the operations of the process are performed is not Fig. The process described in section 4 below is not to be understood as restrictive.

[0210] In 410, the ventilator 110 (e.g., the control module 260) can start one or more components of the ventilator 110. In some embodiments, the ventilator 110 can be started during a startup process (e.g., when a user presses the on / off button of the ventilator 110). In some embodiments, the control module 260 can load a bootstrap program from a storage device (e.g., RAM, ROM, flash memory, Secure Digital (SD) memory card, etc.) of the ventilator 110, load a user program from the storage device of the ventilator 110, or activate one or more peripheral devices of the control module 260 (e.g., a communication interface, a timer, an A / D acquisition interface, an indicator light, a button, a rotary knob, a power switch, etc.).) initiate one or more sensors, the gas pressure control unit 210, one or more configuration parameters, and / or one or more treatment parameters. In some embodiments, the control module 260 can initialize a direct-access memory of the ventilator 110, read one or more parameters from a storage device of the main body (e.g., non-volatile memory, flash memory, SD card) of the ventilator 110 and / or from the network 120, and / or initiate the detection module 250. In some embodiments, the control module 260 can start a program that continuously reads information from the detection module 250 and controls the pressure of the pressurized breathing gas using at least the information read from the detection module 250 and one or more of the parameters. In some embodiments, the parameters read from a storage device of the main body (e.g.,a non-volatile memory, a flash memory, an SD card) of the ventilator 110 and / or from the network 120, comprising one or more threshold values ​​relating to an upper limit of pressure, an upper limit of air leakage of the pressurized breathing gas, a lower limit of air leakage of the pressurized breathing gas, a lower limit of respiratory rate or a lower limit of input voltage of the ventilator 110 or the like.

[0211] In embodiment 420, the ventilator 110 can deliver breathing gas to a user (e.g., the subject 180). In some embodiments, the control module 260 can control or adjust the rotational speed of the gas pressurization unit 210 to pressurize the breathing gas, and the pressurized breathing gas can be delivered (or supplied) to the subject 180 via one or more gas passages in the ventilator 110, the breathing tube 160, and / or the subject interface 170. In some embodiments, the control module 260 can adjust the rotational speed of the gas pressurization unit 210 to pressurize the breathing gas with a delay after the ventilator 110 is started. In some embodiments, the delay can be preset by the user.

[0212] In 430, the ventilator 110 can acquire information relating to the breathing gas and / or the subject 180. In some embodiments, the control module 260 can cause the sensing module 250 (e.g., one or more sensors) to acquire one or more parameters (e.g., a pressure) of the pressurized breathing gas. The acquired information can include parameters relating to the breathing gas, the exhaled gas of the subject 180, and / or the operating status of the ventilator 110. Further descriptions of the parameters are provided elsewhere in this disclosure (e.g., in Fig. 2 and the associated descriptions). In some embodiments, the control module 260 can determine one or more parameters based on the operating state of one or more components of the ventilator 110. For example, the control module 260 can determine the pressure of the breathing gas based on the rotational speed, input voltage, and / or real-time power of the gas pressurization unit 210. In some embodiments, the control module 260 can adjust the rotational speed of the gas pressurization unit 210 to maintain the detected pressure of the pressurized breathing gas within a predetermined range.

[0213] In 440, the ventilator 110 can determine whether an abnormal condition is detected. In some embodiments, the control module 260 can detect an abnormal condition based on a comparison between the current state of the ventilator 110 and the multitude of parameters read from a storage device in the main body of the ventilator 110 and / or from the network 120. In some embodiments, the current state of the ventilator 110 can include, for example, the pressure of the breathing gas, an air leak from the pressurized breathing gas, a respiratory rate, an input voltage of the gas pressurization unit 210, etc. In response to the detection of an abnormal condition, process 400 can proceed to 450. In response to the detection of no abnormal condition, process 400 can return to 420, i.e., the ventilator 110 can continue supplying the breathing gas.

[0214] In 450, the ventilator 110 can issue an alarm or reminder to a user (e.g., subject 180). The warning or reminder can include a voice output, text, etc. For example, in response to an abnormal condition, the ventilator 110 can emit an alarm tone, display a message on a screen, and / or the control module 260 can send an instruction to the terminal 130 to display a message or emit an alarm tone, etc. In some embodiments, after the ventilator 110 has issued a warning or reminder to the user, the process can revert to 420, i.e., the ventilator 110 can continue to deliver the breathing gas.

[0215] Fig. Figures 5A-5E illustrate exemplary gas passages of a ventilator according to some embodiments of the present disclosure. As in Fig. As shown in Figure 5A, a breathing gas stream (e.g., ambient gas) can flow from a gas inlet opening 332 into the ventilator 300 and out of the ventilator 300 through the gas outlet opening 331. In some embodiments, the ventilator 300 can further comprise a gas filter component 340, which is located outside the gas inlet opening 332. The breathing gas can be filtered by the gas filter component 340 before it enters the ventilator 300 via the gas inlet opening 332. As shown in Fig. As shown in Figure 5B, one side of the main body 310, to which the fluid chamber 320 is attached, can include an outlet port 501 and an inlet port 502. The breathing gas filtered by the gas filter component 340 can be pressurized by the gas pressurization unit 210 and then flow through the outlet port 501 of the main body 310. As shown in Fig. As shown in Figure 5C, the liquid chamber 320 can comprise the tank 322 and the tank lid 321, and one side of the tank lid 321, which is connected to the main body 310, can include an outlet opening 503 and an inlet opening 504. The filtered and pressurized breathing gas flowing through the outlet opening 501 of the main body 310 can enter the liquid chamber 320 through the inlet opening 504 of the tank lid 321 and be humidified in the tank 322. The outlet opening 503 of the tank lid 321 can discharge the pressurized and humidified breathing gas. As shown in Fig. 5D and Fig. As shown in Figure 5E, the pressurized and humidified breathing gas, which is discharged through the outlet opening 503 of the tank lid 321, can return to the main body 310 via the inlet opening 502 of the main body 310 and exit the ventilator 300 via the gas outlet opening 331 of the ventilator 300.

[0216] It should be noted that the above description of the ventilator 300 serves only for illustrative purposes and is not intended to limit the scope of this disclosure. In some embodiments, the ventilator 300 may not include the humidification device 220 (i.e., the liquid chamber 320 may be omitted). In some embodiments, the gas outlet port 331 of the ventilator 300 may be located on the liquid chamber 320, and accordingly, the inlet port 502 of the ventilator 300 and the outlet port 503 of the liquid chamber 320 may be omitted. That is, the pressurized breathing gas may be introduced into the liquid chamber 320 via the outlet port 501 of the main body 310 and the inlet port 504 of the liquid chamber 320, and then discharged to a breathing tube via a gas outlet port located on the liquid chamber 320.Accordingly, the humidified breathing gas cannot flow back to the main body 310.

[0217] Fig. Figures 6A-6E illustrate an exemplary gas filter component according to some embodiments of the present disclosure. Fig. Figure 6A shows a first axonometric drawing of the gas filter component 600, illustrating a front, a left side and a top view of the gas filter component 600. Fig. Figure 6B shows a first exploded view of the gas filter component 600. Fig. Figure 6C shows an internal structure of a housing of the gas filter component 600. Fig. Figure 6D shows a second exploded view of the gas filter component 600. Fig. Figure 6E shows a second axonometric drawing of the gas filter component 600, depicting a rear, left side, and top view of the gas filter component 600. In some embodiments, the gas filter component 600 can be detachably connected to the gas inlet opening 112 of the ventilator 110.

[0218] The gas filter component 600 can comprise a housing 601 and one or more gas filter units (e.g., a first gas filter unit 605, a second gas filter unit 606, etc.). In some embodiments, a breathing gas (e.g., an ambient gas) can pass through the gas filter component 600 along a path indicated by the arrow in Fig. The gas enters the ventilator 300 in the direction specified in 6A (e.g., when the gas pressurization unit 210 is in operation). The gas filter component 600 (e.g., the first gas filter unit 605, the second gas filter unit 606, etc.) can filter the breathing gas entering the ventilator 300. In some embodiments, one or more gas filter units can filter the breathing gas in different stages.

[0219] The housing 601 can comprise a gas inlet 602 and a gas outlet 609. The gas inlet 602 can comprise a first cover plate 604. The gas outlet 609 can comprise a second cover plate 607. In some embodiments, the first cover plate 604 can be the same size as the gas inlet 602. In some embodiments, the first cover plate 604 can have at least one hole through which the breathing gas can enter the gas filter component 600. In some embodiments, the second cover plate 607 can be smaller than the gas outlet 609. In some embodiments, the second cover plate 607 can have at least one hole through which the breathing gas can escape from the gas filter component 600 and enter the ventilator 300. In some embodiments, the first cover plate 604 can be detachably connected to the housing 601. In some embodiments, the first cover plate 604 may have a frame.In some embodiments, the frame of the first cover plate 604 may have one or more holes or grooves, and the housing 601 may have one or more corresponding protruding structures (or vice versa) so that the first cover plate 604 can be connected to the housing 601. In some embodiments, the second cover plate 607 may be attached to the gas outlet end 609 of the housing 601 by a sealed connection. In some embodiments, the second cover plate 607 and the housing 601 may be formed as a single piece. In some embodiments, the first cover plate 604 and / or the second cover plate 607 may be configured to protect one or more gas filter units (e.g., the first gas filter unit 605 and / or the second gas filter unit 606) of the gas filter component 600 from deformation.In some embodiments, the housing 601 of the gas filter component 600 can be configured to facilitate the disassembly of the gas filter component 600 and / or the replacement of the gas filter units (e.g., the first gas filter unit 605 and / or the second gas filter unit 606) of the gas filter component 600.

[0220] In some embodiments, the gas filter component 600 can have a stepped or tapered three-dimensional structure. In some embodiments, the gas filter component 600 can be cuboid in shape. In some embodiments, the gas filter component 600 can be funnel-shaped. In some embodiments, the gas outlet 609 of the housing 601 can be funnel-shaped. In some embodiments, the gas inlet 602 can be the same size as the gas outlet 609. In some embodiments, the gas inlet 602 can be larger than the gas outlet 609, thus increasing the inlet volume of the breathing gas flowing into the gas filter component 600. In some embodiments, the gas outlet 609 can be funnel-shaped, allowing it to be connected to the gas inlet 112 of the ventilator 110.In some embodiments, the cross-section (perpendicular to the direction of inflow of the breathing gas) of the gas inlet end 602 (or the first cover plate 604) of the gas filter component 600 may be larger than that of the gas outlet end 609 (or the second cover plate 607), which means that the gas inlet end 602 (or the first cover plate 604) may have a larger inlet area than the gas outlet end 609 (or the second cover plate 607).

[0221] In some embodiments, the first cover plate 604 (or the gas inlet end 602) and the second cover plate 607 (or the gas outlet end 609) can have the same shape. In other embodiments, the first cover plate 604 (or the gas inlet end 602) and the second cover plate 607 (or the gas outlet end 609) can have different shapes. For example, the first cover plate 604 and the second cover plate 607 can be in the shape of a rounded rectangle. As another example, the first cover plate 604 and the second cover plate 607 can be in the shape of a circle. As yet another example, the first cover plate 604 can be in the shape of a rounded rectangle, while the second cover plate 607 can be in the shape of a circle. As another example, the first cover plate 604 can have the shape of a circle, while the second cover plate 607 can have the shape of a rounded rectangle.

[0222] The first cover plate 604 can have multiple holes. The holes in the first cover plate 604 can be configured to facilitate the flow of breathing gas through the first cover plate 604 and its reach to the gas filter unit(s) for filtration. After the breathing gas has flowed through the multiple holes in the first cover plate 604, it can be filtered by the gas filter unit(s). Subsequently, the filtered breathing gas can flow through the second cover plate 607 and enter the gas inlet opening 112 of the ventilator 110. The second cover plate 607 can have one or more holes. The holes in the second cover plate 607 can be configured to facilitate the flow of filtered breathing gas through the second cover plate 607 and to the gas inlet opening 112.In some embodiments, the number of holes arranged on the first cover plate 604 may be greater than the number of holes arranged on the second cover plate 607.

[0223] In some embodiments, the holes in the first cover plate 604 and / or the second cover plate 607 can be in the shape of a strip, circle, rectangle, triangle, rhombus, hexagon, star, or the like, or any combination thereof. The holes can be relatively small, so that a user's finger cannot be inserted into them. In some embodiments, the holes in the first cover plate 604 and / or the second cover plate 607 can be evenly spaced. As shown in Fig. As shown in Figure 6A, 198 round holes are evenly distributed on the first cover plate 604 to form an arrangement of 11 rows and 18 columns. As shown in Fig. As shown in Figure 6E, 16 round holes are evenly distributed on the second cover plate 607 to form an arrangement of 4 rows and 4 columns. It should be noted that in some embodiments, the holes of the first cover plate 604 and / or the second cover plate 607 may be unevenly distributed. In some embodiments, the holes of the first cover plate 604 and / or the second cover plate 607 may help to adjust the gas flow of the breathing gas entering the gas inlet opening 112 of the ventilator 110, thus reducing the noise generated by the gas flow.

[0224] In some embodiments, the first gas filter unit 605 can be a coarse filter. In some embodiments, the coarse filter can be positioned near the first cover plate 604. The coarse filter can comprise a coarse filter sponge (see also coarse filter foam). In some embodiments, the first gas filter unit 605 can comprise one or more layers of a coarse filter sponge (or a multilayer filter membrane). The coarse filter can be configured to filter or adsorb solid particles (such as dust, soot, pollen, etc.) in the breathing gas entering the gas filter component 600. In some embodiments, the size of the particles filtered by the coarse filter sponge can be greater than 5 micrometers. In some embodiments, the coarse filter can further comprise a fastening element configured to secure the coarse filter sponge in the housing 601.

[0225] In some embodiments, the second gas filter unit 606 can be a fine filter. The fine filter can comprise a fine filter sponge (see also fine filter foam). In some embodiments, the second gas filter unit 606 can comprise one or more layers of a fine filter sponge (or a multilayer ultrafiltration membrane). The fine filter can be configured to filter or adsorb solid particles larger than 1 micrometer, such as PM2.5 particles. Exemplary components of the coarse filter and / or the fine filter can comprise synthetic fibers, polyester fibers, glass fibers, or the like, or any combination thereof. In some embodiments, the fine filter can further comprise a fastening element configured to secure the fine filter sponge in the housing 601.In some embodiments, the housing 601 may include one or more frames configured to mount the first gas filter unit 605 and / or the second gas filter unit 606. In some embodiments, the first gas filter unit 605 may be positioned closer to the first cover plate 604 than the second gas filter unit 606 (i.e., the distance between the first gas filter unit 605 and the first cover plate 604 may be less than the distance between the second gas filter unit 606 and the first cover plate 604).

[0226] In some embodiments, the second gas filter unit 606 can be located downstream of the first gas filter unit 605 in the direction of gas flow. In some embodiments, the breathing gas can flow first through the first gas filter unit 605 and then through the second gas filter unit 606. In some embodiments, one or more grids can be arranged between the first gas filter unit 605 and the second gas filter unit 606, so that a certain distance can exist between the first gas filter unit 605 and the second gas filter unit 606, thereby allowing the breathing gas to flow more easily through the first and second gas filter units 605 and improving the filtering effect of the first and second gas filter units 606. In some embodiments, the first gas filter unit 605 and the second gas filter unit 606 can be mounted independently of each other in the housing 601.In some embodiments, the replacement cycle of the first gas filter unit 605 may be shorter than the replacement cycle of the second gas filter unit 606. In some embodiments, the first gas filter unit 605 and the second gas filter unit 606 may be detachably connected to the housing 601. The detachable connection may comprise a snap connection, a screw connection, a hinge connection, or the like, or any combination thereof.

[0227] In some embodiments, the housing 601 of the gas filter component 600 may further comprise a connecting part configured to connect the gas filter component 600 to the gas inlet opening 112 of the ventilator 110. As shown in Fig. As shown in Figure 6E, the connecting part can include a positioning claw 608 on the rear of the housing 601 and a snap claw 603 on the left (or right) side of the housing 601. By pressing and / or holding the snap claw 603, a user (e.g., the subject 180) can easily connect (or disconnect) the gas filter component 600 to the ventilator 110. Accordingly, a pair of limiting holes 704 (see Figure 6E) can be used. Fig. 7B) are attached to two sides of the gas inlet opening 112 to interact with the snap claw 603 or the snap claw 603 so that the gas filter component 600 can be attached to the ventilator 110.

[0228] To ensure a tight connection between the gas filter component 600 and the ventilator 110, a sealing element (e.g., a silicone seal) can be installed between the gas outlet 609 and the gas inlet 112 of the ventilator 110. For example, a sealing element can be installed at the gas outlet 609. Another example would be installing a sealing element at the gas inlet 112 of the ventilator 110 (see 706 in Fig. 7B).

[0229] In some embodiments, the gas filter component 600 may further comprise a first baffle plate (not shown). In some embodiments, the first baffle plate may have an area smaller than the gas inlet end 602 of the housing 601. In some embodiments, the first baffle plate may be located closer to the gas inlet end 602 in the housing 601 than the gas filter unit(s). In some embodiments, the coarse filter may be positioned closer to the gas inlet end 602 of the housing 601 than the fine filter. For example, the first baffle plate may be located between the first cover plate 604 and the first gas filter unit 605. In some embodiments, the first baffle plate may cause the breathing gas to flow into the gas filter component 600 from one or more sides (e.g., four sides) of the first baffle plate, thus reducing the noise generated by the flowing gas.

[0230] In some embodiments, the gas filter component 600 can be arranged between the gas outlet opening of the ventilator 300 and the breathing tube 160. In some embodiments, the gas outlet end 609 can be funnel-shaped so that it can be connected to the breathing tube 160.

[0231] It should be noted that in some embodiments, the gas filter component 600 may be configured to protrude from the housing of the ventilator 110. In some embodiments, a certain distance may exist between the first gas filter unit 605 and the second gas filter unit 606. In some embodiments, the gas filter component 600 may be equipped with one or more grilles between the first gas filter unit 605 and the second gas filter unit 606. In some embodiments, the first gas filter unit 605 may be mounted on the first cover plate 604. In some embodiments, the second gas filter unit 606 may be mounted on the second cover plate 607. In some embodiments, both the first gas filter unit 605 and the second gas filter unit 606 may be mounted on the first cover plate 604.In some embodiments, both the first gas filter unit 605 and the second gas filter unit 606 can be mounted on the second cover plate 607. In some embodiments, the number of holes on the first cover plate 604 can be greater than the number of holes on the second cover plate 607.

[0232] Fig. 7A and Fig. Figure 7B shows an exemplary gas filter unit according to some embodiments of the present disclosure. Fig. Figure 7A shows an axonometric drawing of the ventilator 300 (without the humidification device 220), illustrating a rear view of the ventilator 300. Fig. Figure 7B shows an exploded view of the ventilator 300.

[0233] The ventilator 300 may include a third gas filter unit 702. In some embodiments, the third gas filter unit 702 may be arranged at the gas inlet opening 701 of the ventilator 300. In some embodiments, the third gas filter unit 702 may be configured to filter the breathing gas (e.g., ambient gas) entering the gas inlet opening 701. The third gas filter unit 702 may include a coarse filter and / or a fine filter. Further descriptions of the coarse filter and / or the fine filter can be found elsewhere in this disclosure (e.g., in Fig. 6A-6E and their descriptions). In some embodiments, the third gas filter unit 702 can be located inside the gas inlet port of the ventilator 300, between the gas inlet port of the ventilator 300 and a gas inlet port of the gas pressurization unit 210, at the gas inlet port of the gas pressurization unit 210, at a gas outlet port of the gas pressurization unit 210, between the gas outlet port of the gas pressurization unit 210 and the gas outlet port of the ventilator 300, at the gas outlet port of the ventilator 300, in the breathing tube 160, and / or in the subject interface 170. For example, the third gas filter unit 702 can be located between the gas outlet port of the ventilator 300 and the breathing tube 160.

[0234] In some embodiments, the gas inlet opening 701 may include or be equipped with a second baffle plate 705 and / or a third baffle plate 703. In some embodiments, one or more limiting openings 704 may be arranged on one or more sides of the gas inlet opening 701. The limiting opening(s) 704 may be configured to allow the attachment of an additional gas filter component (e.g., the one described in the Fig. (shown in Figures 6A-6E) facilitate the installation of the gas filter component 600. The second baffle plate 705 and the third baffle plate 703 can be configured to secure the third gas filter unit 702 to the gas inlet opening 701. In some embodiments, the third gas filter unit 702 can be positioned between the second baffle plate 705 and the third baffle plate 703. The second baffle plate 705 can have a variety of holes to allow the breathing gas to flow through the second baffle plate 705. The holes can have various shapes. For example, the holes can be, as shown in Fig. Figure 7B shows the shape of a strip. It should be noted that in some embodiments, if an additional gas filter component (e.g., the one shown in Figure 7B) is used, the gas filter component may have the shape of a strip. Fig. When the additional gas filter component 600 (shown in Figures 6A-6E) is used, the second baffle plate 705 can be removed from the gas inlet opening 701. When the additional gas filter component is not used, the second baffle plate 705 can be attached to the gas inlet opening 701, and the second baffle plate 705 can cover the limiting opening(s) 704. In some embodiments, the third baffle plate 703 can be a transverse baffle plate. The third baffle plate 703 can have a plurality of projections configured to support the third gas filter unit 702. In some embodiments, the edge 706 of the gas inlet opening 701 can have or be equipped with a sealing element to create a sealing connection between the additional gas filter component and the gas inlet opening 701.

[0235] In some embodiments, the ventilator 300 may include a fourth gas filter unit. The fourth gas filter unit may be configured to filter one or more pungent-odorous gases and / or one or more harmful gases (e.g., methanol) in one or more gas passages of the ventilator 300. In some embodiments, the fourth gas filter unit may include a membrane made of one or more adsorbable nanomaterials. The one or more nanomaterials may include activated carbon, graphene, graphene oxide, carbon nanotubes, or the like, or any combination thereof. The one or more nanomaterials may have a large specific surface area. A large specific surface area may indicate a large number of surface atoms. Surface atoms may be more reactive than atoms in the inner layer and may be more likely to adsorb gas molecules.Therefore, a larger specific surface area of ​​a nanomaterial can indicate a stronger adsorption capacity.

[0236] If the Ventilator 300 is used by a patient in a hospital, the pungent odor may originate from a disinfectant used in the hospital. If the Ventilator 300 is used by a user at home, the pungent odor may originate from smoke and / or cooking fumes.In some embodiments, the fourth gas filter unit can be located outside the gas inlet opening of the ventilator 300, at the gas inlet opening of the ventilator 300, inside the gas inlet opening of the ventilator 300, between the gas inlet opening of the ventilator 300 and a gas inlet opening of the gas pressurization unit 210, at the gas inlet opening of the gas pressurization unit 210, at a gas outlet opening of the gas pressurization unit 210, between the gas outlet opening of the gas pressurization unit 210 and the gas outlet opening of the ventilator 300, at the gas outlet opening of the ventilator 300, in the breathing tube 160, and / or at the subject interface 170. For example, the fourth gas filter unit can be located between the gas outlet opening of the ventilator 300 and the breathing tube 160.

[0237] In some embodiments, the ventilator 300 may include a fifth gas filter unit. This fifth gas filter unit may be configured to filter bacteria in one or more gases in one or more gas passes of the ventilator 300. In some embodiments, a large number of bacteria may proliferate in the ventilator 300 after prolonged use. The fifth gas filter unit may include a membrane for filtering bacteria. The membrane may employ one or more physical or chemical techniques to achieve bacterial filtration. The physical or chemical techniques may include a high-efficiency particulate air (HEPA) filter of class H13 or higher, plasma sterilization technology, photocatalyst sterilization technology (e.g., titanium dioxide as the catalyst for the base material, CH-CUT technology with CH-CUT nanomaterial as the core, etc.).), a semiconductor catalyst sterilization technology or the like, or any combination thereof. In some embodiments, the fifth gas filter unit can be located outside the gas inlet opening of the ventilator 300, at the gas inlet opening of the ventilator 300, inside the gas inlet opening of the ventilator 300, between the gas inlet opening of the ventilator 300 and a gas inlet opening of the gas pressurization unit 210, at the gas inlet opening of the gas pressurization unit 210, at a gas outlet opening of the gas pressurization unit 210, between the gas outlet opening of the gas pressurization unit 210 and the gas outlet opening of the ventilator 300, at the gas outlet opening of the ventilator 300, in the breathing tube 160, and / or in the subject interface 170. For example, the fifth gas filter unit can be located between the gas outlet opening of the ventilator 300 and the breathing tube 160.In some embodiments, the fifth gas filter unit may be located in a gas passage between the liquid chamber 222 and the gas outlet of the ventilator 300, considering that moist gas may be more conducive to bacterial growth. In some embodiments, the ventilator 300 may include one or more gas filter units (e.g., the third gas filter unit, the fourth gas filter unit, the fifth gas filter unit, etc.) located in the breathing tube 160 and / or in the subject interface 170.

[0238] It should be noted that in some embodiments, the filter sponges of one or more of the first, second, third, fourth, and fifth gas filter units may have different materials, shapes, and / or colors. In some embodiments, the first, second, third, fourth, and / or fifth gas filter unit may be attached at a connection point between two components of the ventilator 300 to facilitate the replacement of the filter unit(s) (e.g., a connection point between the main body of the ventilator 300 and the liquid chamber, a connection point between the gas outlet of the ventilator 300 and the breathing tube 160, a connection point between the breathing tube 160 and the subject interface 170, etc.).) be attached. In some embodiments, the filter unit(s) can be removed from the ventilator 300 and stored under suitable conditions (e.g. in a drying cabinet, a sterilizer, a storage box, a dustproof box, etc.).

[0239] In some embodiments, an ultrasonic atomizer can be used in the humidification device 220, and droplets of one or more therapeutic agents and / or one or more liquids can be generated and introduced into the breathing gas. In some embodiments, one or more of the filter units shown above can be used to filter harmful particles in the droplets of the therapeutic agents and / or liquids and / or the breathing gas. In some embodiments, the filter sponges of the filter unit(s) can have a hydrophobic surface.

[0240] Fig. Figures 8A-8D show different views of an exemplary noise reduction device according to some embodiments of the present disclosure. Fig. Figure 8A shows an axonometric drawing of the noise reduction device 8. Fig. Figure 8B shows an underside of the noise reduction device 8. Fig. Figure 8C shows an internal structure of the noise reduction device 8 with sound-absorbing materials. Fig. Figure 8D shows an internal structure of the noise reduction device 8 without sound-absorbing materials. The noise reduction device 8 can be configured to reduce noise generated by a gas pressurization unit 808 and / or by the flow of pressurized breathing gas in the gas passage(s) of the ventilator 110. The noise reduction device 8 can comprise a noise reduction box 801, one or more sound-absorbing materials, and / or one or more frames.

[0241] In some embodiments, the noise-attenuating box 801 can be a sealed box with a gas inlet opening 809 (e.g., a gas inlet opening for introducing breathing gas into the noise-attenuating box 801) and a gas outlet opening 810 (e.g., a gas outlet opening for venting (pressurized) breathing gas). In some embodiments, the gas inlet opening 809 of the noise-attenuating box 801 can be in a sealed connection with an inner surface of the gas inlet opening 112 of the ventilator 110, so that the breathing gas entering the gas inlet opening 112 of the ventilator 110 can flow directly into the noise-attenuating box 801. In some embodiments, the gas inlet opening 809 of the noise-attenuating box 801 can be configured as the gas inlet opening 112 of the ventilator 110.

[0242] The noise-attenuation box 801 can accommodate the gas pressurization unit 808. The gas pressurization unit 808 can include a blower (not shown) configured to generate a flow of pressurized breathing gas based on the gas introduced into the ventilator 110. In some embodiments, the breathing gas, after being filtered through one or more gas filter units located within the gas inlet opening, can enter the gas pressurization unit 808 and be pressurized by the blower, thereby generating pressurized breathing gas. The pressurized breathing gas can be discharged from the noise-attenuation box 801 through the gas outlet opening 810 into an internal gas passage of the ventilator 110.

[0243] In some embodiments, the noise-absorbing box 801 may comprise one or more sound-absorbing materials (e.g., an L-shaped sound-absorbing material 804, a broken-line sound-absorbing material 802, a rectangular sound-absorbing material 803). The sound-absorbing materials may be attached to the inner walls of the noise-absorbing box 801. As shown in Fig. As shown in Figure 8C, the L-shaped sound-absorbing material 804 and the broken-line sound-absorbing material 802 can be placed near the gas inlet opening 809. A rectangular sound-absorbing material 803 can be placed near the gas pressurization unit 808.

[0244] In some embodiments, the one or more sound-absorbing materials may include porous materials, sheet materials, resonant materials, or the like, or any combination thereof. Examples of porous materials include carpets, curtains, sprayable cellulose, porous plaster, fibrous mineral wool and fiberglass, open-cell foam, felted or cast porous ceiling tiles, or the like, or a combination thereof. In some embodiments, porous materials may be the most commonly used sound-absorbing materials. In some embodiments, the thickness of the porous materials may be important for sound absorption. The sound-absorbing effect of the porous materials may be due to the fact that sound energy, upon striking the surface of the porous materials, can penetrate them.In some embodiments, the sound energy can be converted into heat energy, so that only a relatively small portion is reflected as sound energy. In other words, the porous material can absorb a portion of the sound. In some embodiments, the plate materials can be non-rigid, non-porous materials. The plate materials can be arranged above an air space that vibrates in a bending mode in response to the sound pressure exerted by neighboring gas molecules. Exemplary plate (or membrane) materials can include thin wood. In some embodiments, plate materials can be configured to absorb low-frequency noise. Resonant materials can be configured to absorb sound within a relatively narrow frequency range. Resonant materials can include some perforated materials and materials with openings (holes and slots).An example of a resonant material is the Helmholtz resonant material, which can be in the shape of a bottle. The resonant frequency can be determined by the size of the opening, the length of the neck, and the volume of gas enclosed in the bottle-shaped chamber.

[0245] In some embodiments, the noise-absorbing box 801 may further comprise one or more frames configured for mounting one or more sound-absorbing materials. In some embodiments, the size and / or shape of the frame(s) and the corresponding sound-absorbing materials may be matched. As shown in Fig. As shown in Figure 8D, a frame 805 and a frame 806 can be configured to attach the L-shaped sound-absorbing material 804 and the broken-line sound-absorbing material 802, respectively, to the inner walls of the sound-absorbing box 801. A frame 807 can be configured to attach the rectangular sound-absorbing material 803. It should be noted that not all sound-absorbing materials and frames are shown in Figure 8D. Fig. 8C and Fig. Figure 8D shows that, for illustrative purposes, only three sound-absorbing materials and their corresponding frames are described in this disclosure, but this is not intended to limit the scope of this disclosure.

[0246] As in Fig. 8C and Fig. As shown in Figure 8D, the one or more sound-absorbing materials and / or the one or more frames can form a gas passage with one or more twists and / or one or more bends in the noise-attenuation box 801. The gas passage in the noise-attenuation box 801 can be subdivided into several sub-gas passages with different cross-sections. The noise generated by the blower can constantly collide with the sound-absorbing materials, resulting in the continuous absorption of vibrational energy and an effective reduction of the noise level in decibels. In some embodiments, the sub-gas passages can form at least two attenuation chambers, including a first attenuation chamber near the gas inlet opening 809 and a second attenuation chamber around the gas pressurization unit 808.The first and second attenuation chambers can be connected by a gas passage between them. In some embodiments, the at least two attenuation chambers can provide a larger surface area for the breathing gas than the connecting gas passage, thereby achieving relatively low resistance of the breathing gas at a relatively high velocity. Therefore, the noise generated by the flow of the breathing gas (especially the high-frequency components of the noise) can be effectively reduced.

[0247] Fig. Figures 9A-9E illustrate an exemplary connection between a noise-dampening device and the main body of a ventilator according to some embodiments of the present disclosure. In some embodiments, the noise-dampening box 801 can be attached between a housing cover 901 of the ventilator 110 and a base plate 902 of the ventilator 110. In some embodiments, the noise-dampening box 801 can have one or more protruding structures and / or one or more grooves. In some embodiments, the housing cover 901 and / or the base plate 902 can have one or more corresponding grooves and / or one or more protruding structures configured to interact with the protruding structure(s) and / or the groove(s) so that the noise-dampening box 801 can be attached between the housing cover 901 and the base plate 902.

[0248] Fig. Figures 10A-10C show exemplary exploded views of a noise-attenuating device according to some embodiments of the present disclosure. The noise-attenuating box 801 can comprise a box cover 1001, a box body 1003, and a filling element 1002. The noise-attenuating box 801 can accommodate the gas pressurization unit 808. In some embodiments, the filling element 1002 can be arranged around the gas pressurization unit 808. The filling element 1002 can comprise a variety of sound-absorbing materials configured to reduce noise generated in the noise-attenuating box 801. The gas pressurization unit 808 can have a gas inlet opening (in Fig. 10A-10C not shown) and a gas outlet port 1004. The gas inlet port of the gas pressurization unit 808 can be configured to introduce breathing gas from the noise reduction box 801 into the gas pressurization unit 808. The gas outlet port 1004 can be configured to discharge the pressurized breathing gas from the gas pressurization unit 808 into the gas passages of the main body of the ventilator 110.

[0249] Fig. Figures 11A-11F illustrate an exemplary connection between a gas pressurization unit and a noise-attenuating box according to some embodiments of the present disclosure. In some embodiments, the noise-attenuating box 801 may further comprise one or more supports (e.g., three supports) 1102 configured to support the gas pressurization unit 808 in an interior space of the box body 1003 of the noise-attenuating box 801 (see Figure 11A-11F). Fig. 11E and Fig. 11F). In some embodiments, the box body 1003 of the noise-attenuating box 801 may include one or more corresponding limiting holes 1104 configured to limit the position of the supports 1102. In some embodiments, each of the supports 1102 may comprise a support section and a buffer section. The support section of each of the supports 1102 may be made of a rigid material to fix the gas pressurization unit 808 in the noise-attenuating box 801. The buffer section of each of the supports 1102 may be made of a flexible material (e.g., silicone) to dampen the vibration of the gas pressurization unit 808 and thus reduce noise.

[0250] In some embodiments, the gas pressurization unit 808 may include a gas inlet opening 1103 configured to introduce breathing gas from the noise-attenuating box 801 into the gas pressurization unit 808. In some embodiments, the gas pressurization unit 808 may include a connecting piece 1101 configured to attach the gas pressurization unit to an interior of the noise-attenuating box 801. In some embodiments, the box body 1003 of the noise-attenuating box 801 may include a limiting groove 1105. The connecting piece 1101 can be secured in the limiting groove 1105, allowing the gas pressurization unit 808 to be attached inside the noise-attenuating box 801 (see Fig. 11E and Fig. 11F). In some embodiments, the connecting piece 1101 can dampen vibrations of the gas pressurization unit 808 in one or more directions. Further descriptions of the connecting piece 1101 can be found elsewhere in the present disclosure (e.g., in Fig. 13A and Fig. 13B and the accompanying descriptions).

[0251] Fig. Figures 12A-12C show an exemplary gas pressurization unit according to some embodiments of the present disclosure. As in Fig. As shown in Figure 12A, the gas pressurization unit 808 can comprise a connecting piece 1101 and one or more supports 1102. The connecting piece 1101 can be configured to attach the gas pressurization unit 808 to an interior space of the main body of the ventilator 110. In some embodiments, the connecting piece 1101 can be configured to dampen vibration and / or prevent the transmission of vibration from the gas pressurization unit 808 (e.g., to the noise-dampening box 801) in one or more directions. Vibrations of the gas pressurization unit 808 can occur during transport, operation, etc. In some embodiments, the connecting piece 1101 can be detachably connected to the gas outlet opening 1004 of the gas pressurization unit 808.

[0252] Fig. Figure 12B shows a side view in cross-section of the connecting piece 1101, which, according to some embodiments of the present disclosure, is connected to the blower. In some embodiments, the gas outlet opening 1004 of the gas pressurization unit 808 can be connected to the connecting piece 1101 by one or more screw threads. In some embodiments, the gas outlet opening 1004 of the gas pressurization unit 808 can be connected to the connecting piece 1101 by one or more protruding projections and one or more corresponding grooves. In some embodiments, an inner surface of the gas outlet opening 1004 can be connected to an outer surface of the connecting piece 1101. In some embodiments, as shown in Fig. As shown in Figure 12B, an inner surface of the connecting piece 1101 is connected to an outer surface of the gas outlet opening 1004. This is only an example, as shown in Fig. Figure 12C shows two annular grooves in the inner surface of the connecting piece 1101 coupled to two annular projections on the outer surface of the gas outlet opening 1004 of the gas pressurization unit 808. In some embodiments, the connecting piece 1101 may be made of or comprise a flexible material (e.g., silicone) with elasticity. In some embodiments, the gas outlet opening 1004 of the gas pressurization unit 808 may be inserted directly into the connecting piece 1101 or pivotable relative to the gas pressurization unit 808 so that the gas outlet opening 1004 can be connected to the connecting piece 1101.

[0253] The Fig. 13A and Fig. Figure 13B shows an exemplary connecting piece according to some embodiments of the present disclosure. Fig. Figure 13A shows an axonometric drawing of the connector 1101. Fig. Figure 13B shows a side view in cross-section of connector 1101. As in Fig. 13A and Fig. As shown in Figure 13B, the connecting piece 1101 can comprise a connecting part 1301 and a fastening part 1302. The connecting part 1301 and the fastening part 1302 can be made of the same or different materials. In some embodiments, the connecting part 1301 can be configured to align with the gas outlet opening 1004 (see Figure 13B). Fig. 12B) of the gas pressurization unit 808 and / or forms a sealed connection between the connecting piece 1101 and the gas pressurization unit 808. In some embodiments, the connecting piece 1301 may be made of one or more flexible materials (e.g., silicone) to prevent the gas outlet opening 1004 of the gas pressurization unit 808 from detaching from the connecting piece 1301, so that the connecting piece 1101 can tolerate or dampen vibrations of the gas pressurization unit 808 caused by rough handling of the ventilator 110.

[0254] In some embodiments, the fastening part 1302 can be configured to fasten the connecting piece 1101 to the interior of the main body of the ventilator 110 and / or to form a fastening connection between the connecting piece 1101 and the main body of the ventilator 110. In some embodiments, the fastening part 1302 can be configured to fasten the connecting piece 1101 to a noise-attenuating box (e.g., the one described in Fig. 8B shown noise attenuation box 801) is attached and / or forms a fastening connection between the connector 1101 and the noise attenuation box. As shown in Fig. As shown in Figure 11B, the noise-attenuation box 801 can have one or more limiting grooves 1105 (e.g., mounting slots) which are connected to the mounting part 1302 of the connecting piece 1101. In some embodiments, the gas pressurization unit 808 can be secured in a fixed position within the noise-attenuation box 801 by inserting two opposite sides of the mounting part 1302 into the mounting slot(s).

[0255] In some embodiments, the fastening part 1302 can consist of one or more hard materials, such as Teflon, a thermoplastic polymer with relatively high strength and / or toughness. In some embodiments, the fastening part 1302, as shown in Fig. Figure 13A shows the connecting part 1301 to have the shape of a substantially flat disc. In some embodiments, the fastening part 1302 may have an opening configured to allow the (pressurized) breathing gas to pass through. In some embodiments, the connecting part 1301 may have a tubular structure. The tubular structure may comprise a first end 1303 and a second end 1304. In some embodiments, the first end 1303 of the connecting part 1301 may be attached to the fastening part 1302. In some embodiments, the second end 1304 of the connecting part 1301 may be connected to the outlet opening of the gas pressurization unit 808. The connecting part 1301 may be configured to allow the (pressurized) breathing gas to pass through the tubular structure to the opening of the fastening part 1302.In some embodiments, the (pressurized) breathing gas can be expelled from the gas pressure unit 808 and flow successively through the gas outlet opening 1004, the connecting part 1301, the opening of the fastening part 1302, the gas outlet opening 810 of the noise reduction box 801 and into an inner gas passage of the ventilator 110.

[0256] In some embodiments, the connecting part 1301 can comprise one or more annular structures. The one or more annular structures can be connected end to end. In some embodiments, there can be a certain distance between each pair of adjacent annular structures of the one or more annular structures. In some embodiments, each of the one or more annular structures can comprise an outer annular structure and an inner annular structure. The outer annular structure(s) can be connected to the fastening part 1302. The inner annular structures can be connected to the noise-attenuating box, fasten the connecting part 1101 to the noise-attenuating box, and / or form a fastening connection between the connecting part 1101 and the noise-attenuating box.

[0257] In some embodiments, such as in Fig. As shown in Figure 13B, the connecting part 1301 and the fastening part 1302 can be formed as a single piece. In some embodiments, the second end 1304 of the connecting part 1301 can have an annular double-layered structure comprising an inner layer 1305 and an outer layer 1306. In some embodiments, the second end 1304 of the connecting part 1301 can have a multi-layered structure comprising an inner layer 1305, an outer layer 1306, and one or more intermediate layers (in Fig. 13B not shown).

[0258] In some embodiments, such as in Fig. As shown in Figure 13B, the outer layer 1306 can be connected at one end to the fastening part 1302 of the connecting piece 1101 and at the other end to the inner layer 1305. In some embodiments, the inner layer 1305 may not be connected to the fastening part 1302. In some embodiments, the inner layer 1305 may be connected to an outer surface of the gas outlet opening 1004 of the gas pressurization unit 808. In some embodiments, the outer surface of the gas outlet opening 1004 of the gas pressurization unit 808 may have one or more protruding projections, and the inner surface of the inner layer 1305 may have one or more corresponding grooves that correspond to the one or more protruding projections, so that the gas outlet opening 1004 of the gas pressurization unit 808 can be fastened to the connecting piece 1101.In some embodiments, the outer surface of the gas outlet opening 1004 of the gas pressurization unit 808 may have one or more grooves, and the inner surface of the inner layer 1305 may have one or more corresponding protrusions that correspond to the one or more grooves, so that the gas outlet opening 1004 of the gas pressurization unit 808 can be attached to the connecting piece 1101. The protrusions and / or the grooves may have various shapes (e.g., cuboid, cube, cylinder, cone, truncated cone, prism, pyramid, truncated pyramid, or the like, or any combination thereof). This is shown only as an example in Figure 1. Fig. As shown in Figure 13B, the protruding projections and the corresponding grooves can be annular. In some embodiments, the protruding projections and / or the corresponding grooves can be arranged uniformly. Alternatively or additionally, the protruding projections and / or the corresponding grooves can be arranged randomly. In some embodiments, the outer layer 1306 can comprise a first annular flexible structure 1307 configured to tolerate or dampen vibrations of the gas pressurization unit 808 along an axial direction of the connecting part 1301. In some embodiments, the first annular flexible structure 1307 can have a U-shape, a V-shape, a Z-shape, an M-shape, an S-shape, a C-shape, an O-shape, or the like, or a combination thereof. In some embodiments, the first annular flexible structure 1307 can have one or more folds.

[0259] In some embodiments, the inner layer 1305 may be connected at one end to the fastening part 1302 of the connecting piece 1101 and at the other end to the outer layer 1306. In some embodiments, the outer layer 1306 may not be connected to the fastening part 1302. In some embodiments, the outer layer 1306 may be connected to an inner surface of the gas outlet opening 1004 of the gas pressurization unit 808. In some embodiments, the inner surface of the gas outlet opening 1004 of the gas pressurization unit 808 may have one or more grooves, and the outer surface of the outer layer 1306 may have one or more corresponding protrusions that correspond to the one or more grooves, so that the gas outlet opening 1004 of the gas pressurization unit 808 can be fastened to the connecting piece 1101.In some embodiments, the inner surface of the gas outlet opening 1004 of the gas pressurization unit 808 may have one or more protruding projections, and the outer surface of the outer layer 1306 may have one or more corresponding grooves that correspond to the one or more protruding projections, so that the gas outlet opening 1004 of the gas pressurization unit 808 can be attached to the connecting piece 1101. The protruding projections and / or the grooves may have various shapes (e.g., cuboid, cube, cylinder, cone, truncated cone, prism, pyramid, truncated pyramid, or the like, or any combination thereof). This is only an example, as shown in Figure 1. Fig. As shown in Figure 13B, the protruding projections and the corresponding grooves can be annular. In some embodiments, the protruding projections and / or the corresponding grooves can be arranged uniformly. Alternatively or additionally, the protruding projections and / or the corresponding grooves can be arranged randomly. In some embodiments, the inner layer 1305 can comprise a first annular flexible structure configured to tolerate or dampen vibrations of the gas pressurization unit 808 along an axial direction of the connecting part 1301. In some embodiments, the first annular flexible structure can have a U-shape, a V-shape, a Z-shape, an M-shape, an S-shape, a C-shape, an O-shape, or the like, or a combination thereof. In some embodiments, the first annular flexible structure can have one or more folds.

[0260] In some embodiments, a connection between the inner layer 1305 and the outer layer 1306 may include a second annular flexible structure 1308 configured to tolerate or dampen vibrations of the gas pressurization unit 808 along a radial direction of the connecting part 1301. In some embodiments, the second annular flexible structure 1308 may have a U-shape, a V-shape, a Z-shape, an M-shape, an S-shape, a C-shape, an O-shape, or any combination thereof. In some embodiments, the second annular flexible structure 1308 may have one or more folds.

[0261] In some embodiments, if the second end 1304 of the connecting part 1301 has an annular multilayer structure comprising an inner layer 1305, an outer layer 1306, and one or more intermediate layers, the one or more intermediate layers may comprise a first annular flexible structure configured to tolerate or dampen vibrations of the gas pressurization unit 808 along an axial direction of the connecting part 1301. In some embodiments, the first annular flexible structure may have a U-shape, a V-shape, a Z-shape, an M-shape, an S-shape, a C-shape, an O-shape, or the like, or any combination thereof. In some embodiments, the first annular flexible structure may have one or more folds.In some embodiments, a connection between the inner layer 1305 and an intermediate layer, a connection between the outer layer 1306 and an intermediate layer, and / or a connection between two intermediate layers may comprise one or more second annular flexible structures configured to tolerate or dampen vibrations of the gas pressurization unit 808 along a radial direction of the connecting part 1301. In some embodiments, each second annular flexible structure may have a U-shape, a V-shape, a Z-shape, an M-shape, an S-shape, a C-shape, an O-shape, or the like, or any combination thereof. In some embodiments, each second annular flexible structure may have one or more folds.

[0262] It should be noted that the above description serves only for illustration and is not intended to limit the scope of this disclosure. In some embodiments, the number of first annular flexible structures may be greater than one. In some embodiments, the number of second annular flexible structures may be greater than one. In some embodiments, the first annular flexible structure, the second annular flexible structure, the inner layer 1305, and / or the outer layer 1306 may be made of the same or different materials. For example, the first annular flexible structure and / or the second annular flexible structure may consist of one or more materials with relatively high elasticity (e.g., flexible material(s)), while the inner layer 1305 and / or the outer layer 1306 may consist of one or more materials with relatively low elasticity (e.g.,The first annular flexible structure, the second annular flexible structure, the inner layer 1305, and / or the outer layer 1306 can have the same or different thicknesses. For example, the first annular flexible structure and / or the second annular flexible structure can have a relatively small thickness, while the inner layer 1305 and / or the outer layer 1306 can have a relatively large thickness. In some embodiments, the first annular flexible structure, the second annular flexible structure, the inner layer 1305, and / or the outer layer 1306 can be partially reinforced by one or more fibers. In some embodiments, the connecting piece 1101 can be manufactured using 3D printing.In some embodiments, the structure of the connecting part 1301 can be applied in various connecting parts of the ventilator 110, including, for example, the connecting part between the gas outlet opening 111 and the breathing tube 160, the connecting part between the main body of the ventilator 110 and a liquid chamber, the connecting part between the breathing tube 160 and the subject interface 170, etc.

[0263] Fig. 14A and Fig. Figure 14B shows an exemplary ventilator with a gas parameter detection arrangement according to some embodiments of the present disclosure. The gas parameter detection arrangement can be configured to detect one or more gas parameters of (pressurized and / or humidified) breathing gas, e.g., from the outlet area of ​​the humidification device 220. In some embodiments, the parameters detected by the gas parameter detection can include snoring by a user (e.g., the subject 180) of the ventilator 110. Fig. Figure 14A shows an axonometric drawing of the main body 1400 of the ventilator 110 with the gas parameter acquisition arrangement. Fig. Figure 14B shows a cross-sectional view of the ventilator 110, including the gas parameter acquisition arrangement. In some embodiments, as in Fig. 14A and Fig. As shown in Figure 14B, the gas parameter sensing arrangement can include a sensing element 1401. The sensing element 1401 can be configured to detect a gas flow. In some embodiments, the sensing element 1401 can be located downstream of the humidified and pressurized breathing gas relative to the humidification device 220. In some embodiments, the gas flow can be disturbed by the snoring of a user (e.g., subject 180) of the ventilator 110. In some embodiments, a main body of the ventilator 110 can include a gas recirculation chamber 1404. The gas recirculation chamber 1404 can be connected to the gas outlet port 1402 of the ventilator 110. In the present disclosure, the gas outlet port 1402 of the ventilator 110 can also be referred to as the main gas outlet port of the ventilator 110.The gas recirculation chamber 1404 can be configured to direct the (pressurized and humidified) breathing gas to the gas outlet opening 1402. In some embodiments, the sensing element 1401 can be located in the gas recirculation chamber 1404. In some embodiments, the sensing element 1401 can be located facing the gas outlet opening 1402 of the ventilator 110. In some embodiments, the sensing element 1401 can be detachably connected to the ventilator 110. In some embodiments, the sensing element 1401 can be attached to the ventilator 110 by means of one or more slots (e.g., two slots) arranged on one or more sides of the sensing element 1401 (see Figure 1). Fig. 16B).

[0264] In some embodiments, such as in the Fig. As shown in Figures 14A, 14B, and 16A-16D, the sensing part 1401 can comprise an inlet opening 1601, an outlet opening 1602, and / or at least one channel 1403 (also referred to as a gas passage). In some embodiments, the channel 1403 can be curved. In some embodiments, the channel 1403 can be located within the sensing part 1401. In some embodiments, a first end of the channel 1403 can be the inlet opening 1601. In some embodiments, the inlet opening 1601 can be an opening on a first surface (e.g., a front face) of the sensing part 1401. In some embodiments, the first surface can face the gas outlet opening 1402 of the ventilator 110. In some embodiments, a second end of the channel 1403 can be the outlet opening 1602. In some embodiments, the outlet opening 1602 can be an opening on a second surface (e.g. a bottom surface) of the detection part 1401.In some embodiments, the second surface may differ from the first surface. In some embodiments, the second surface of the sensing part 1401 may be in a sealed connection with an inner surface of the main body of the ventilator 110 (e.g., a bottom surface of the gas recirculation chamber 1404). In some embodiments, the inlet opening 1601 may be located above the bottom surface of the gas recirculation chamber 1404. In some embodiments, the inlet opening 1601 may be located above the second surface of the sensing part 1401. In some embodiments, the sensing part 1401 may protrude from the inner surface of the main body of the ventilator 110 (e.g., a bottom surface of the gas recirculation chamber 1404) to prevent water from flowing into the sensing part 1401.In some embodiments, the cross-sectional area of ​​the channel 1403 can gradually increase from the inlet opening 1601 to the outlet opening 1602. In some embodiments, one or more openings (e.g., a first opening 1501, a second opening 1502) can be arranged in the interior of the device below the outlet opening 1602 of the sensing element 1401. In some embodiments, the gas flow can be introduced into the interior of the ventilator 110 via the sensing element 1401 and the one or more openings. In some embodiments, the sensing element 1401 can be made of a flexible material (e.g., silicone) or a rigid material. In some embodiments, the sensing element 1401 can be made of a hydrophobic material.

[0265] Fig. 15A and Fig. Figure 15B shows the interior of an exemplary ventilator comprising a gas parameter sensing arrangement according to some embodiments of the present disclosure. In some embodiments, a printed circuit board (PCB) may be mounted inside the ventilator 110. In some embodiments, one or more sensors (e.g., a first sensor 1504, a second sensor 1505) may be integrated into the printed circuit board. Fig. Figure 15A shows a bottom view of the interior of the ventilator 110. Fig. Figure 15B shows an enlarged view of one or more sensors integrated into the printed circuit board (PCB) mounted inside the ventilator 110. As in Fig. 15A and Fig. As shown in Figure 15B, the gas parameter sensing arrangement can include a first sensor 1504. In some embodiments, the first sensor 1504 can be configured to measure a gas parameter associated with snoring based on the gas flow. In some embodiments, the first sensor 1504 can be configured to measure the pressure of the gas flow. In some embodiments, the first sensor 1504 can include a third opening 1506 on its surface. In some embodiments, the third opening 1506 can be integral to the surface of the first sensor 1504. In some embodiments, the first sensor 1504 can be a pressure sensor. In some embodiments, the gas parameter sensing arrangement can include a first tube (not shown). The first tube can connect the first opening 1501 to the third opening 1506.The first pipe can be configured to direct the gas flow from the detection part 1401 to the surface of the first sensor 1504.

[0266] In some embodiments, the first sensor 1504 (e.g., a pressure sensor) can further be configured to detect the pressure of the breathing gas in one or more gas passages of the ventilator 110. In some embodiments, the pressure of the breathing gas in the gas passage(s) of the ventilator 110 can be detected based on a low-frequency portion of the signal detected by the first sensor 1504, while a snoring signal can be detected based on a high-frequency portion of the signal detected by the first sensor 1504. In some embodiments, the control module 260 can control and / or adjust the rotational speed of the gas pressurization unit 210 to achieve a desired breathing gas pressure based on the detected breathing gas pressure.

[0267] In some embodiments, the ventilator 110 may include a flow sensing device. The flow sensing device may be configured to detect a flow of one or more gases in one or more passages of the ventilator 110. In some embodiments, the first sensor and the second sensor may share the same sensing part 1401. In some embodiments, the flow sensing device may include the second sensor 1505. The second sensor 1505 may be configured to detect a flow signal associated with the one or more gases in the one or more passages of the ventilator 110. In some embodiments, the second sensor 1505 may be a flow sensor. In some embodiments, the second sensor 1505 may include a fourth opening 1507 and / or a fifth opening 1508 on its surface.In some embodiments, the fourth opening 1507 and / or the fifth opening 1508 may be integrally formed on the surface of the second sensor 1505. In some embodiments, the flow sensing device may include a sixth opening 1503 (also referred to as an auxiliary sensing opening). The sixth opening 1503 may be located in the main body of the ventilator 110. In some embodiments, the sixth opening 1503 may be located upstream of the one or more gases flowing to the sensing part 1401. In some embodiments, the sixth opening 1503 may be configured to detect a gas flow from the gas outlet opening of the gas pressurization unit 210. In some embodiments, the flow sensing device may include a second tube (not shown) and / or a third tube (not shown).The second tube can be configured to direct a gas flow from the sensing part 1401 to a surface of the second sensor 1505. In some embodiments, the second tube can connect the second opening 1502 to the fourth opening 1507 to direct the gas flow from the sensing part 1401 to the surface of the second sensor 1505. The third tube can be configured to direct a gas flow from the auxiliary sensing opening to a surface of the second sensor 1505. In some embodiments, the third tube can connect the fifth opening 1508 to the sixth opening 1503 to direct the gas flow from the auxiliary sensing opening to the surface of the second sensor 1505.

[0268] Fig. Figures 16A-16D illustrate an exemplary sensing element of a gas parameter sensing arrangement and / or a flow sensing device according to some embodiments of the present disclosure. The sensing element 1401 can be arranged in the main body of the ventilator 110 opposite the gas outlet opening 1402 of the ventilator 110. In some embodiments, the sensing element 1401 can detect the pressurized and humidified breathing gas from the outlet area of ​​the humidification device 220. Therefore, the gas flow detected by the sensing element 1401 can be more stable, and the detected parameters (such as snoring, pressure, flow rate, or the like) can be more accurate. Fig. Figure 16A shows a perspective view of the sensing part 1401 according to some embodiments of the present disclosure. In some embodiments, the sensing part 1401 can be, as in Fig. Figure 16A shows an approximately rounded cuboid structure with six faces (e.g., a front face, a back face, a top face, a bottom face, a left face, and a right face). The front of the sensing part 1401 can face the gas outlet opening 1402 of the ventilator 110. In some embodiments, the sensing part 1401 can have a different structure, including a cuboid, a cube, a cylinder, a prism, or the like, or any combination thereof.

[0269] In some embodiments, the sensing part 1401 may include an inlet opening 1601. In some embodiments, the inlet opening 1601 may be located on the front of the sensing part 1401 opposite the gas outlet opening 1402 of the ventilator 110. In some embodiments, the inlet opening 1601 may be located below an upper edge of the gas outlet opening 1402 of the ventilator 110, but above a lower edge of the gas outlet opening 1402. In some embodiments, the inlet opening 1601 may be located at the upper left corner of the front. In some embodiments, the inlet opening 1601 may be located at a different position on the front. For example, the inlet opening 1601 may be located at the upper right corner or in the center of the front.In some embodiments, the inlet opening 1601 can be located on a different surface of the sensing part 1401, for example, on the top surface of the sensing part 1401. In some embodiments, the inlet opening 1601 can have the shape of a long and thin rounded rectangle (or strip). In some embodiments, the inlet opening 1601 can have another shape, including a square, a circle, a polygon, or the like, or any combination thereof. In some embodiments, the inlet opening 1601 can have one or more openings.

[0270] Fig. Figure 16B shows a side perspective view of the detection part 1401 according to some embodiments of the present disclosure. In some embodiments, as in Fig. As shown in Figure 16B, the sensing part 1401 can include one or more slots. The one or more slots can be configured to provide a detachable connection between the sensing part 1401 and the main body of the ventilator 110. In some embodiments, the one or more slots can include a first mounting slot 1607 and a second mounting slot 1603. The first mounting slot 1607 and the second mounting slot 1603 can be located on the same or different surfaces of the sensing part 1401. For example, the first mounting slot 1607 can be located on the front of the sensing part 1401, while the second mounting slot 1603 can be located on the rear of the sensing part 1401.In some embodiments, the first mounting slot 1607 and the second mounting slot 1603 can be arranged parallel to each other to secure the sensing part 1401 in a horizontal direction. In some embodiments, the first mounting slot 1607 and the second mounting slot 1603 can be located on the right and left faces, respectively. In some embodiments, the first mounting slot 1607 and the second mounting slot 1603 can be located closer to the underside of the sensing part 1401. In some embodiments, the sensing part 1401 can have a first groove 1605 and a second groove 1606 located on any surface of the sensing part 1401 (e.g., the right surface).

[0271] In some embodiments, one or more claws may be provided on the underside of the sensing part 1401. Correspondingly, one or more slots connected to the one or more claws may be provided in the main body of the ventilator 110 to secure the sensing part 1401. In some embodiments, one or more slots may be provided on the underside of the sensing part 1401, and one or more claws connected to the one or more slots may be provided in the main body of the ventilator 110 to secure the sensing part 1401.

[0272] Fig. Figure 16C shows a lower perspective view of the detection part 1401 according to some embodiments of the present disclosure. As in Fig. As shown in Figure 16C, the sensing element 1401 can include an output opening 1602. In some embodiments, as in Fig. As shown in Figure 16C, the outlet opening 1602 can be located on the underside of the sensing part 1401. In some embodiments, the outlet opening 1602 can be located on another surface of the sensing part 1401, for example, on the rear side of the sensing part 1401. The outlet opening 1602 can be located below the inlet opening 1601. In some embodiments, the outlet opening 1602 can be in the shape of a rounded rectangle. In some embodiments, the outlet opening 1602 can be in the shape of a square, a circle, a polygon, or the like, or any combination thereof. In some embodiments, a silicone seal 1604 can be arranged on the sensing part 1401 to ensure a sealed connection between the sensing part 1401 and the main body of the ventilator 110. In some embodiments, the silicone seal 1604 can be arranged around the outlet opening 1602.In some embodiments, the outlet opening 1602 can be located closer to the upper edge of the silicone seal 1604.

[0273] Fig. Figure 16D shows a side view in cross-section of the detection part 1401 according to some embodiments of the present disclosure. As in Fig. As shown in Figure 16D, the sensing part 1401 can include a channel 1403. The channel 1403 can be arranged within the sensing part 1401. The channel 1403 can be configured to connect the inlet opening 1601 and the outlet opening 1602. In some embodiments, the channel 1403 can have a relatively small cross-sectional area near the inlet opening 1601 and a relatively large cross-sectional area near the outlet opening 1602. In some embodiments, the cross-sectional area of ​​the channel 1403 can gradually increase from the inlet opening 1601 to the outlet opening 1602. In some embodiments, the pressurized breathing gas can contain a certain amount of moisture. In some embodiments, one or more water droplets can form near the inlet opening 1601 due to the condensation of water vapor in the pressurized breathing gas.In some embodiments, the channel 1403 may have a depression near the inlet opening 1601, so that the inlet opening 1601 may be located below the top of the channel 1403, thus preventing condensation droplets from flowing from the inlet opening 1601 and the channel 1403 onto the surface of the first sensor 1504. This prevents the condensation droplets from flowing back through the channel 1403 to the surface of the first sensor under the influence of gravity.

[0274] In some embodiments, the ventilator 110 may include a pressure sensor (e.g., the first sensor 1504) and a flow sensor (e.g., the second sensor 1505) for snoring detection, as well as a gas inlet port for humidified breathing gas (e.g., the inlet port 1601) configured to introduce pressurized and humidified breathing gas from the humidification device 220. In some embodiments, the pressure sensor and the flow sensor may be connected via a (curved) channel (e.g., the channel 1403) to a section between the main gas outlet port of the ventilator 110 (e.g., the gas outlet port 1402) and the gas inlet port for humidified gas.

[0275] Fig. Figure 17 shows an exemplary ventilator according to some embodiments of the present disclosure. The ventilator 1700 may comprise a main body 1702 and / or a humidification device. In some embodiments, the humidification device may be configured to humidify the pressurized breathing gas to produce pressurized and humidified breathing gas. In some embodiments, the humidification device may comprise a liquid chamber 1704, a heating plate 1710, and a heat-conducting plate 1810 (see Figure 17). Fig. 18A and Fig. 18B). The liquid chamber 1704 can be configured to hold one or more liquids (e.g., water and / or medication). The heat-conducting plate can be configured to conduct heat from the heating plate 1710 to heat the one or more liquids and to generate steam to humidify the pressurized breathing gas. In some embodiments, the heat-conducting plate can be attached to the bottom of the liquid chamber 1704. In some embodiments, the heat-conducting plate can comprise a metallic heat-conducting material.

[0276] In some embodiments, the main body 1702 can contain a gas pressurization unit (in Fig. 17 (not shown) comprise, which is located in the main body 1702, as well as a gas inlet opening 1706, a gas outlet opening 1708 and / or a support plate 1707. In some embodiments, the gas inlet opening 1706 and / or the gas outlet opening 1708 may be arranged at a first interface between the main body 1702 and the liquid chamber 1704. In some embodiments, the support plate 1707 may be arranged at a second interface between the main body 1702 and the liquid chamber 1704. In some embodiments, the support plate 1707 may be attached to a base plate of the main body 1702. In some embodiments, the first interface (see Figure 17) may be located at a second interface between the main body 1702 and the liquid chamber 1704. Fig. 23A-23D) of the main body 1702 and the liquid chamber 1704 refer to a side surface of the main body 1702 and a corresponding side surface of the liquid chamber 1704. In some embodiments, the second interface (see Fig. 17-21D) of the main body 1702 and the liquid chamber 1704 refer to a bottom surface of the liquid chamber 1704 and a corresponding surface of the support plate 1707 of the main body 1702. In some embodiments, the gas outlet opening 1708 can be configured to discharge the pressurized breathing gas from the main body 1702 into the liquid chamber 1704. In some embodiments, the gas inlet opening 1706 can be configured to introduce the pressurized and humidified breathing gas from the liquid chamber 1704 back into the main body 1702. In some embodiments, the support plate 1707 can have a first hole 1709 and / or a second hole 1711. In some embodiments, the first hole 1709 and / or the second hole 1711 can be located at the second interface. In some embodiments, at least one section of the heating plate 1710 can be arranged in the second hole 1711.

[0277] The heating plate 1710 can be configured to heat one or more liquids in the liquid chamber 1704 and / or to generate steam to humidify the pressurized breathing gas. In some embodiments, the heating plate 1710 can be attached to the base of the main body 1702 by means of one or more springs 2202 (see Fig. 22C). The heating plate 1710 can be driven by pressure or by releasing the pressure and move up and down through the second hole 1711.

[0278] In some embodiments, the liquid chamber 1704 can be detachably connected to the main body 1702, so that the humidification device can be removablely connected to the main body 1702. For example, the liquid chamber 1704 can be connected via a push-push mechanism (see Fig. 19-21D) through an opening (e.g., the first opening 1709) in the support plate 1707 in a detachable connection with the main body 1702. When the liquid chamber 1704 is attached to the main body 1702 of the ventilator 1700, the bottom of the liquid chamber 1704 (e.g., a heat-conducting plate of the liquid chamber 1704) can be in close contact with the heating plate 1710. Further descriptions of the humidification device can be found elsewhere in the present disclosure (e.g., in the Fig. 18A and Fig. 18B and the accompanying descriptions).

[0279] Fig. 18A and Fig. Figure 18B shows exploded views of an exemplary liquid chamber according to some embodiments of the present disclosure. In some embodiments, as in the Fig. 18A and Fig. As shown in Figure 18B, the liquid chamber 1704 can comprise a tank lid and a tank. In some embodiments, the tank lid can comprise an outer shell 1802 and one or more gas passages 1805. In some embodiments, the tank can comprise a tank casing 1808, a thermally conductive plate seal 1809, and a thermally conductive plate 1810. It should be noted that in some embodiments, the gas passage(s) 1805 can be located within the tank. In some embodiments, the liquid chamber 1704 can include a fastening seal 1806 and / or a tank lid seal 1807 between the tank and the tank lid. The fastening seal 1806 and / or the tank lid seal 1807 can be configured to provide a tight seal between the tank and the tank lid.In some embodiments, the liquid chamber 1704 may include a connecting plate 1803 and / or a gas passage seal 1804 to interact with the main body 1702.

[0280] In some embodiments, the components of the liquid chamber 1704 can be detachably connected. For example, the connecting plate 1803 can be attached and / or fastened to the outer shell 1802 by gluing, riveting, snapping, clamping, interlocking, or the like, or any combination thereof. As another example, the gas passage seal 1804 can be connected to and / or fastened to the gas passage(s) 1805. As yet another example, the mounting seals 1806 and / or the tank cap seal 1807 can be attached to and / or fastened to the housing 1808 to improve the airtightness between the outer shell 1802 and the housing 1808. In some embodiments, the mounting seal 1806 can be installed within the tank cap seal 1807.As another example, the thermally conductive plate gasket 1809 can be installed between the thermally conductive plate 1810 and a base frame of the housing 1808. As another example, the thermally conductive plate 1810 can be connected to the thermally conductive plate gasket 1809 by gluing, riveting, snapping, clamping, interlocking, or the like, or any combination thereof. As another example, the thermally conductive plate gasket 1809 can be attached to the base frame of the housing 1808 by gluing, riveting, snapping, clamping, interlocking, or the like, or any combination thereof.

[0281] Fig. Figure 19 shows an exemplary push-push mechanism in conjunction with a liquid chamber of a ventilator according to some embodiments of the present disclosure. In some embodiments, the push-push mechanism 1904 can be arranged below the support plate 1707. In some embodiments, the housing 1808 of the liquid chamber 1704 can be detachably connected to the push-push mechanism 1904 by a push rod 1906. In some embodiments, the push rod 1906 can be arranged below a bottom surface of the liquid chamber 1704.

[0282] In some embodiments, the liquid chamber 1704 can be driven by a first thrust force. When the first thrust force is released, the push rod 1906 can be locked to the push-push mechanism 1904, allowing the liquid chamber 1704 to be attached to the main body 1702 of the ventilator 1700. When the liquid chamber 1704 is driven by a second thrust force and the second thrust force is released, the push rod 1906 can be removed from the push-push mechanism 1904, allowing the liquid chamber 1704 to be detached from the main body 1702 of the ventilator 1700. In some embodiments, the direction of the first thrust force can be the same as the direction of the second thrust force. For example, the direction of the first thrust force and the direction of the second thrust force can both be vertically downwards.In some embodiments, the push-push mechanism 1904 can be arranged on one side of the first interface between the main body 1702 and the fluid chamber 1704, and then the first push force and the second push force can act in a horizontal direction.

[0283] Fig. 20A and Fig. Figure 20B illustrates an exemplary push-push mechanism according to some embodiments of the present disclosure. Fig. Figure 20A shows an axonometric drawing of the push-push mechanism from 1904. Fig. Figure 20B shows an exploded view of the push-push mechanism 1904. In some embodiments, as in the Fig. 20A and Fig. As shown in Figure 20B, the push-push mechanism 1904 can include a guide slot 2002, a sliding block 2004, a first spring 2006, a second spring 2008, and a push rod 1906 (see Figure 20B). Fig. 19) etc.

[0284] The guide slot 2002 can be configured to receive the first spring 2006 and the second spring 2008 and to guide the movement of the sliding block 2004. In some embodiments, the guide slot 2002 can be provided on the main body (e.g., the main body 1702) of a ventilator 1700. For example, the guide slot 2002 can be located below the support plate 1707 of the main body (e.g., the main body 1702) of the ventilator 1700. In some embodiments, the guide slot 2002 can be attached to the main body (e.g., the main body 1702) by gluing, riveting, snapping, clamping, interlocking, or any combination thereof. In some embodiments, the guide slot 2002 can be made of a material such as cast iron, stainless steel, non-ferrous metal, plastic, or any combination thereof.

[0285] The sliding block 2004 can be mounted on the guide slot 2002. In some embodiments, the sliding block 2004 can move back and forth along the guide slot 2002 in a first direction. In some embodiments, the first direction can be parallel to the guide slot C0402. In some embodiments, the sliding block 2004 can include a guide block 2005. The guide block 2005 can be configured to guide or limit a movement position of the push rod 1906. In some embodiments, as in the Fig. 20A and Fig. As shown in Figure 20B, the guide block 2005 may have a frame similar to that shown in character A. In some embodiments, the guide block 2005 may have a frame that differs from that shown in character A (e.g., a frame of character N or M, etc.). In some embodiments, the guide block 2005 may have a first inclination 2015, a groove 2035, a second inclination 2025, and a third inclination 2055. In some embodiments, the third inclination 2055 may be substantially vertical. In some embodiments, the inclination direction of the first inclination 2015 may differ from the inclination direction of the second inclination 2025. In some embodiments, a first angle between the first inclination 2015 and a vertical direction may be greater than a second angle between the second inclination 2025 and the vertical direction.The first inclination 2015, the second inclination 2025, and / or the third inclination 2055 can be configured to guide the movement position of the push rod 1906. The groove 2035 can be configured to limit the movement position of the push rod 1906. In some embodiments, the guide block 2005 can include a first projection 2065, a second projection 2075, and / or a third projection 2085. The first projection 2065 and / or the second projection 2075 can be configured to prevent the push rod 1906 from moving out of the groove 2035 when the fluid chamber 1704 is attached to the main body 1702, thus allowing the fluid chamber 1704 to be attached to the main body 1702. In some embodiments, the first projection 2065 and / or the second projection 2075 can be sharp. In some embodiments, the lower end of the first projection 2065 may be lower than that of the second projection 2075.In some embodiments, the first projection 2065 and the second projection 2075 can be arranged in a horizontal direction on the same side of the third projection 2085.

[0286] In some embodiments, the sliding block 2004 may further have a protrusion 2045 (or ridge) below the groove 2035 of the guide block 2005. The protrusion 2045 may have a first inclination and a second inclination. The first inclination of the protrusion 2045 may be close to the first inclination of the guide block 2005. The second inclination of the protrusion 2045 may be close to the second inclination of the guide block 2005. In some embodiments, the groove 2035 may limit the movement position of the push rod 1906 by interacting with the protrusion 2045. In some embodiments, the sliding block 2004 may be made of a material such as cast iron, stainless steel, non-ferrous metal, plastic, or the like, or any combination thereof. In some embodiments, the material of the sliding block 2004 may be the same as, or different from, the material of the guide slot 2002.

[0287] The first spring 2006 and the second spring 2008 can be inserted into the guide slot 2002. The first spring 2006 can have a first end and a second end. The first end of the first spring 2006 can be connected to a first end of the guide block 2005. The second end of the first spring 2006 can be attached to the main body (e.g., the main body 1702) of the ventilator 1700. The second spring 2008 can also have a first end and a second end. The first end of the second spring 2008 can be connected to a second end of the guide block 2005. The second end of the second spring 2008 can be attached to the main body (e.g., the main body 1702) of the ventilator. In some embodiments, the first spring 2006 may be identical to or differ from the second spring 2008, for example with regard to the materials (e.g. carbon steels or alloy steels), the types (e.g.Coil springs, wave springs, shaped springs or conical springs), of the sizes or the like, or any combination thereof.

[0288] In some embodiments, the first spring 2006 and the second spring 2008 can be configured to guide a direction of movement of the guide block 2005 (or the sliding block 2004). In some embodiments, the second spring 2008 can be compressed when the guide block 2005 (or the sliding block 2004) is driven to move along the first direction (e.g., the direction indicated by the solid arrow in the figure). Fig. to move in the direction indicated in 20B). The compressed second spring 2008 can cause the guide block 2005 (or the sliding block 2004) to move in a direction opposite to the first direction (e.g., the direction indicated by the dashed arrow in Fig. to move in the direction specified in 20B). Additionally or alternatively, the first spring 2006 can be compressed when the guide block 2005 (or the sliding block 2004) is driven to move in the opposite direction to the first direction. The compressed first spring 2006 can cause the guide block 2005 (or the sliding block 2004) to move along the first direction. In some embodiments, the first spring 2006 can be omitted.

[0289] In some embodiments, the push rod 1906 can have a first end and a second end. The first end of the push rod 1906 can be attached to the fluid chamber 1704 (e.g., the housing 1808). The second end of the push rod 1906 can interact with the guide block 2005. In some embodiments, the push rod 1906 can be reciprocated along a second direction. In some embodiments, the second direction can be perpendicular to the first direction of movement of the guide block 2005 (or the sliding block 2004). In some embodiments, the second end of the push rod 1906 can have a fixed structure, such as a protrusion (e.g., a cylinder). In some embodiments, the second end of the push rod 1906 can have a rotatable structure, such as a bearing assembly.In some embodiments, the second end of the push rod 1906, which comprises a fixed structure, can slide along the first inclination 2015, the third inclination 2055, the groove 2035, and the second inclination 2025 of the guide block 2005. In some embodiments, the second end of the push rod 1906, which comprises a rotatable structure, can roll along the first inclination 2015, the third inclination 2055, the groove 2035, and the second inclination 2025 of the guide block 2005.

[0290] Fig. 21A and Fig. Figure 21B illustrates an exemplary process for attaching a liquid chamber to the main body of a ventilator by means of a push-push mechanism according to some embodiments of the present disclosure. As shown in Fig. As shown in Figure 21A, the fluid chamber 1704 can be driven by a first thrust force and then attached to the main body 1702. In some embodiments, the first thrust force can be generated by a user (e.g., the subject 180). The direction of the first thrust force can be indicated by arrow A (e.g., a vertical direction, also referred to as the second direction). In some embodiments, the push rod 1906 can pass through the first hole 1709 and interact with the guide block 2005. In some embodiments, the center position of the push rod 1906 in its natural state can be on the right side of the underside of the second projection 2075 along the first direction.When the push rod 1906 is driven by the first thrust force, it can move with the fluid chamber 1704 along the second direction (indicated by arrow A) and slide downwards along the first inclination 2015 of the guide block 2005. Accordingly, the push rod 1906 can cause the guide block 2005 to move along the first direction (indicated by arrow B) as the push rod 1906 moves downwards, and the second spring 2008 can be compressed. Simultaneously, the compressed second spring 2008 can generate a reaction force that tends to push the push rod 1906 with the guide block 2005. In some embodiments, the first direction can be essentially perpendicular to the second direction.In some embodiments, if the first thrust force is greater than the reaction force, the push rod 1906 can slide downwards along the third slope 2055 and move towards or approach the lower edge of the third slope 2055. Then the push rod 1906 can separate from the first slope and / or the third slope 2055 and pass below the underside of the first projection 2065.

[0291] In some embodiments, when the first thrust force is released, the push rod 1906 can move in a direction opposite to the second direction, and the push rod 1906 can slide in a left part of a region formed by the bulge 2045 of the guide block 2005 and the groove 2035. Simultaneously, the guide block 2005 can move in a direction opposite to the first direction. The push rod 1906 and the guide block 2005 can cease their movement when the push rod 1906 moves to an upper position of the groove 2035, and accordingly, the push rod 1906 can become stuck in the groove 2035 of the guide block 2005 (see Fig. 21B). Therefore, the liquid chamber 1704 can be attached to the main body 1702 of the ventilator. In some embodiments, during the first pressure force applied to the liquid chamber 1704, and / or when the liquid chamber 1704 is attached to the main body 1702, the heating plate 1710 can be pressed through the bottom of the liquid chamber 1704 and move downwards in the second hole 1711. In some embodiments, one or more springs 2202 can be pressed below the heating plate 1710, and then the heating plate 1710 and the heat-conducting plate 1810 at the bottom of the liquid chamber 1704 can form close (or intimate) contact.

[0292] Fig. 21C and Fig. Figure 21D illustrates an exemplary process for removing a liquid chamber from the main body of a ventilator by a push-push mechanism according to some embodiments of the present disclosure. As shown in Fig. As shown in Figure 21C, the fluid chamber 1704 can be driven by a second thrust force and then released from the main body 1702. In some embodiments, the second thrust force can be generated by a user (e.g., the subject 180). The direction of the second thrust force can be indicated by arrow A (e.g., a vertical direction, also referred to as the second direction). When the push rod 1906 is driven by the second thrust force, it can move with the fluid chamber 1704 along the second direction (indicated by arrow A) and move downwards in a right-hand portion of a region formed by the bulge 2045 of the guide block 2005 and the groove 2035. Simultaneously, the guide block 2005 can move along the opposite direction to the first direction (indicated by arrow B').In some embodiments, the movement of the guide block 2005 along the opposite direction to the first direction can be driven by the reaction force of the second spring 2008. Then the push rod 1906 can be released from the groove 2035 and pass below the base of the second projection 2075.

[0293] In some embodiments, when the second pressure force is released, the one or more compressed springs CH 0902 below the heating plate 1710 can cause the heating plate 1710 to move in the opposite direction to the second direction. The movement of the heating plate 1710 can cause the fluid chamber 1704 to move in the opposite direction to the second direction, and the movement of the fluid chamber 1704 can cause the push rod 1906 to move in the opposite direction to the second direction. Then the push rod 1906 can move along the second inclination of the guide block 2005, and the guide block 2005 can move in a direction opposite to the first direction (indicated by arrow B'). Therefore, the fluid chamber 1704 can be detached from the main body 1702 of the ventilator 1700 (see Fig. 21D), and the fluid chamber 1704 can be removed from the main body 1702.

[0294] It should be noted that the above description of the push-push mechanism 1904 serves only for illustration and is not intended to limit the scope of this disclosure. In some embodiments, the push-push mechanism 1904 can be attached to the main body 1702 of the ventilator in different directions, so that different pressure forces may be required to attach and / or remove the fluid chamber 1704 from the main body 1702. In some embodiments, the guide block 2005 can be arranged in a mirror image of the one described in the Fig. 20A-21D. In some embodiments, the push-push mechanism 1904 may comprise more than one push rod. In some embodiments, the push-push mechanism 1904 may be configured to unlock the liquid chamber 1704 from the main body of the ventilator 110 by pushing the liquid chamber 1704 in a pressure direction. The pressure direction may be substantially perpendicular to any liquid level in the liquid chamber 1704. In some embodiments, the push-push mechanism 1904 may be configured to form an energy storage means to store the energy of the pushing action and release the stored energy after the liquid chamber 1704 has been unlocked by applying a force to the liquid chamber substantially in the opposite direction to the pressure direction.It should be noted that in some embodiments, the tank lid of the liquid chamber 1704 may be configured to be closed by pushing in the direction of pressure. In some embodiments, the tank lid of the liquid chamber 1704 may be configured to be opened by pulling in a direction substantially opposite to the direction of pressure. In some embodiments, when operating the ventilator 110, a user may connect the humidification device (e.g., the liquid chamber 1704) to the main body of the ventilator 110 by pushing the liquid chamber 1704 in the direction of pressure, and / or unlock the humidification device from the main body by pushing the liquid chamber 1704 substantially in the direction of pressure. In some embodiments, the user may place the humidification device on a surface of the ventilator 110 before coupling it.In some embodiments, coupling the humidification device may include locking the tank lid to the tank by pressing the tank lid essentially in the direction of pressure.

[0295] Fig. Figures 22A-22D show an exemplary heating plate according to some embodiments of the present disclosure. In some embodiments, the heating plate 1710 can have one or more mounting columns 2204 (e.g., four mounting columns arranged in Fig. 22D) comprise, configured to form a first end of one or more springs 2202 (e.g., four springs arranged in the Fig. 22C and Fig. (shown in 22D). Accordingly, the base plate 2203 of the main body 1702 can include one or more mounting posts or bolts configured to secure a second end of the springs 2202. Therefore, the heating plate 1710 can be attached to or fastened to the base plate 2203 of the main body 1702 via the one or more springs 2202. As shown in Fig. As shown in Figure 17, the heating plate 1710 can be moved up and down by applying or releasing pressure through the second hole 1711. To facilitate the movement of the heating plate 1710 in the second opening 1711, the heating plate 1710 can have one or more protrusions 2201. For example, the heating plate 1710 can have a protrusion 2201 on each side. Similarly, the side wall(s) of the second hole 1711 can have one or more grooves (not shown). The protrusions and grooves can be configured to guide the movement of the heating plate 1710 and / or limit its position. For example, the second hole 1711 can have a guide groove in each of its side walls.It should be noted that in some embodiments the heating plate 1710 may have one or more grooves, while the second hole 1711 may have one or more protrusions corresponding to the grooves.

[0296] Fig. Figures 23A-23D illustrate an exemplary connection between a liquid chamber and a main body of a ventilator according to some embodiments of the present disclosure. Fig. Figure 23A shows an axonometric drawing of a connecting piece 2301 connected to a tank lid 2302 of a liquid chamber 2303. It should be noted that the outer shell of the tank lid 2302 is in Fig. 23A is not shown for the sake of clarity. Fig. Figure 23B shows an axonometric drawing of the connector 2301. Fig. Figure 23C shows an axonometric drawing of the tank cap 2302. Fig. Figure 23D shows a sectional view of a sealed connection between the seal 2305 of the connector 2301 and the tank cap 2302.

[0297] The connector 2301 can be configured to create a sealed connection between the tank lid 2302 and the main body of the ventilator 110 to ensure the airtightness of the pressurized breathing gas flowing between the liquid chamber 2303 and the main body of the ventilator 110. In some embodiments, the connector 2301 can be attached to the main body of the ventilator 110. In some embodiments, the connector 2301 can be detachably connected to the main body of the ventilator 110. In some embodiments, the housing of the main body of the ventilator 110 can include a space (e.g., the chamber 2502) for receiving the connector 2301. In some embodiments, the connector 2301 and the main body can be a single, integral part.In some embodiments, the connecting piece 2301 can create a sealed connection between the tank lid 2302 and the main body 110 of the ventilator 110 when the liquid chamber 2303 is attached to a support plate (e.g. the one shown in . Fig. The main body of the ventilator 110 is attached to the support plate 1707 (shown in Figure 17), and the tank lid 2302 is closed with the tank of the liquid chamber 2303. In some embodiments, the connecting piece 2301 can be attached to or mounted on the tank lid 2302. In some embodiments, the connecting piece 2301 can be detachably connected to the tank lid 2302. In some embodiments, the tank lid 2302 can include a space for attaching the connecting piece 2301. In some embodiments, the connecting piece 2301 and the tank lid 2302 can be a single piece.

[0298] As in Fig. As shown in Figure 23B, the connector 2301 can include a support frame 2304 and / or a seal 2305. The support frame 2304 can be configured to support the seal 2305 and / or to facilitate the attachment of the seal 2305 to the main body of the ventilator 110. In some embodiments, the seal 2305 can have a sloping surface. In some embodiments, there can be an angle of inclination between the sloping surface of the connector 2301 (or the seal 2305) and a horizontal plane. In some embodiments, the angle of inclination can be substantially between 0 degrees and 90 degrees (e.g., between 30 and 60 degrees). The seal 2305 can be configured to form a sealed connection between the tank lid 2302 and the main body of the ventilator 110.In some embodiments, the seal 2305 may have a first opening 2306 and / or a second opening 2307 arranged on the sloping surface. In some embodiments, the support frame 2304 may include at least one gas flow channel associated with the first opening 2306 and / or the second opening 2307. Each of the at least one gas flow channel may be connected to one or more gas passages in the main body of the ventilator 110. In some embodiments, the edge of the first opening 2306 may form a first projecting structure 2311. In some embodiments, the edge of the second opening 2307 may include a second projecting structure 2312. The first projecting structure 2311 and / or the second projecting structure 2312 may project toward the tank lid 2302.The first protruding structure 2311 and / or the second protruding structure 2312 can facilitate the sealing connection between the connector 2301 and the tank cap 2302. In some embodiments, the cross-section of the first protruding structure 2311 and / or the second protruding structure 2312 can have a C-shape, an S-shape, an O-shape, a V-shape, an M-shape, an N-shape, a Z-shape, a U-shape, or one or more folds, or the like, or a combination thereof. In some embodiments, the first protruding structure 2311 and / or the second protruding structure 2312 can be made of a soft material (e.g., silicone, soft adhesive, or the like, or any combination thereof). In some embodiments, the first protruding structure 2311 and / or the second protruding structure 2312 can be made of the same material as the seal 2305.In some embodiments, the first protruding structure 2311 and / or the second protruding structure 2312 may be made of a different material than the seal 2305. In some embodiments, the thickness of the first protruding structure 2311 and / or the second protruding structure 2312 may be less than that of the seal 2305.

[0299] In some embodiments, the seal 2305 can be attached to the main body (e.g., the frame 2304 of the connector 2301) of the ventilator 110. In some embodiments, the seal 2305 can be detachably connected to the main body (e.g., the frame 2304 of the connector 2301) of the ventilator 110, for example, by an adhesive bond, bonding, a screw connection, or the like, or a combination thereof. In some embodiments, the support frame 2304 can be made of a rigid plastic material. Examples of rigid plastic materials include acrylonitrile butadiene styrene (ABS) resins, polyformaldehyde (POM) plastics, polystyrene (PS) plastics, polymethyl methacrylate (PMMA) plastics, polycarbonate (PC) plastics, poly(ethylene terephthalate) (PET) plastics, poly(butylene terephthalate) (PBT) plastics, or poly(phenylene oxide) (PPO) plastics, or the like, or any combination thereof.In some embodiments, the seal 2305 may be made of an elastic material, such as an elastomer, rubber (e.g., silicone), or the like, or a combination thereof. In some embodiments, the seal 2305 may have a protruding edge at the interface between the support frame 2304 and the seal 2305. The protruding edge of the seal 2305 may facilitate a sealing connection between the connector 2301 and the main body of the ventilator 110.

[0300] As in the Fig. As shown in Figures 23A-23D, the sloping surface of the seal 2305 can face a corresponding sloping surface of the connecting plate 2308 of the tank lid 2302. The tank lid 2302 can have a gas inlet opening 2309 and a gas outlet opening 2310. The first opening 2306 on the sloping surface of the seal 2305 can correspond to the gas inlet opening 2309 of the tank lid 2302, and the second opening 2307 on the sloping surface of the seal 2305 can correspond to the gas outlet opening 2310 of the tank lid 2302. In some embodiments, the tank lid 2302 can be in a sealed connection with the main body of the ventilator 110 via the seal 2305 when the liquid chamber 2303 is mounted on a support plate (e.g., the one shown in Figure 23A-23D). Fig. The main body of the ventilator 110 is attached to the support plate 1707 shown in Figure 17, and the tank lid 2302 is closed with the tank of the liquid chamber 2303. The first opening 2306 of the seal 2305 and the gas inlet opening 2309 of the tank lid 2302 can be used to introduce the pressurized breathing gas from the main body of the ventilator 110 into the liquid chamber 2303. The second opening 2307 of the seal 2305 and the gas outlet opening 2310 of the tank lid 2302 can be used to introduce the humidified and pressurized breathing gas from the liquid chamber 2303 back into the main body of the ventilator 110.

[0301] As in Fig. As shown in Figure 23D, when the tank lid 2302 is closed, the first protruding structure 2311 can be extruded and deformed, then forming a closed line contact with the connecting plate 2308 (e.g., around the edge of the gas inlet opening 2309 and / or the gas outlet opening 2310) of the tank lid 2302. Therefore, the airtightness of the breathing gas flowing between the main body of the ventilator 110 and the liquid chamber 2303 can be ensured.

[0302] Fig. Figure 24 illustrates a further exemplary connection between a fluid chamber and a main body of a ventilator according to some embodiments of the present disclosure. As in Fig. As shown in Figure 24, the liquid chamber 2403 can comprise a tank 2401 and a tank lid 2402. The connector 2301 can be configured to provide a sealed connection between a section of the tank 2401 and the main body of the ventilator 110. In some embodiments, the connector 2301 may not be in direct contact with the tank lid 2402. Therefore, the state of the tank lid 2402 (open or closed) does not affect the connection between the connector 2301 and the tank 2401. In some embodiments, the tank lid 2402 can be opened by a handle 2404. The handle 2404 may have one or more notches that facilitate its operation. In some embodiments, the tank lid 2402 may be a sliding cover. In some embodiments, the tank cap 2402 can be opened along the horizontal direction or along a direction with an angle of inclination (e.g.(10 degrees, 20 degrees, 30 degrees or the like) relative to the horizontal direction. In some embodiments, an interface 2405 of the tank 2401 and the tank lid 2402 may be provided with a sealing material (or an elastic material) comprising, for example, silicone or the like, to ensure a tight connection between the tank 2401 and the tank lid 2402.

[0303] Fig. Figure 25 shows an exemplary connecting piece attached to a main body of a ventilator according to some embodiments of the present disclosure. In some embodiments, as in Fig. As shown in Figure 25, a projecting platform 2501 can be arranged at the gas outlet opening of a noise-attenuating box (e.g., the noise-attenuating box 801) or in a gas passage between the gas outlet opening of the noise-attenuating box and the connecting piece 2301. In some embodiments, the projecting platform 2501 can comprise a gas passage corresponding to a gas outlet. In some embodiments, the gas passage between the gas outlet opening of the noise-attenuating box and the connecting piece 2301 can form a chamber 2502. The chamber 2502 can comprise a bottom surface. In some embodiments, if the gas outlet of the projecting platform 2501 is located in a vertical direction, the upper edge of the projecting platform 2501 can be arranged higher than the bottom surface of the chamber 2502.In some embodiments, if the gas outlet of the projecting platform 2501 is located in a horizontal direction, the lower edge of the gas passage in the projecting platform 2501 may be positioned higher than the bottom surface of the chamber 2502. In some situations, if the ventilator 110 is positioned at an angle (i.e., the liquid chamber is positioned at an angle), a certain amount of liquid in the liquid chamber (e.g., liquid chamber 1704, liquid chamber 2403) may inadvertently flow from the liquid chamber into the chamber 2502 of the main body of the ventilator 110 via the gas inlet opening (e.g., gas inlet opening 2309) and / or the gas outlet opening (e.g., gas outlet opening 2310) of the liquid chamber and / or the connecting piece 2301.In some embodiments, the protruding platform 2501 can prevent the liquid from entering or reaching an interior space of the main body of the ventilator, the detection module 250, the noise reduction device 240 and / or the gas pressurization unit 210.

[0304] In some embodiments, the projecting platform 2501 can be attached to the gas outlet opening of the noise-dampening device 240, the gas pressurization unit 210, or in the chamber 2502. In some embodiments, the projecting platform 2501 can be detachably connected to the gas outlet opening of the noise-dampening device 240, the gas pressurization unit 210, or the chamber 2502 via a detachable connection structure, for example, a threaded connection structure, a slotted connection structure, a snap-fit ​​connection structure, or any combination thereof.

[0305] Fig. Figures 26A-26C illustrate an exemplary connection between a liquid chamber and the main body of a ventilator according to some embodiments of the present disclosure. The connecting piece 2601 can be configured to provide a sealed connection between the tank lid 2603 and the main body 2602 of the ventilator 110. In some embodiments, the connecting piece 2601 can comprise a first threaded hose 2601a and / or a second threaded hose 2601b. The through-hole of the first threaded hose 2601a can form a gas outlet port of the main body 2602. The through-hole of the second threaded hose 2601b can form a gas inlet port of the main body 2602. In some embodiments, the first threaded hose 2601a and / or the second threaded hose 2601b can be made of an elastic material, such as an elastomer, rubber (e.g.,silicone) or the like, or a combination thereof.

[0306] In some embodiments, the tank lid 2603 of the liquid chamber can include a connecting plate 2606 equipped with a gas inlet opening 2604 and / or a gas outlet opening 2605 of the tank lid 2603. The gas outlet opening of the main body 2602 can correspond to the gas inlet opening 2604 of the tank lid 2603. The gas inlet opening of the main body 2602 can correspond to the gas outlet opening 2605 of the tank lid 2603. In some embodiments, as in Fig. As shown in Figure 26A, the through-holes of the first threaded hose 2601a and the second threaded hose 2601b of the connector 2601 can be arranged essentially vertically at the first interface between the main body 2602 of the ventilator 110 and the liquid chamber. Similarly, the connecting plate 2606 can be arranged essentially horizontally on the tank lid 2603. Therefore, when the tank lid 2603 is closed, a sealed connection can be established between the main body 2602 of the ventilator 110 and the liquid chamber via the connector 2601.

[0307] Fig. Figure 27 shows an exemplary connection between a connecting piece 2601 and a connecting plate 2606 of a tank cap 2603 when the tank cap 2603 is closed according to some embodiments of the present disclosure. As in Fig. As shown in Figure 27, when the tank lid 2603 is closed, the connecting piece 2601 can be connected to the connecting plate 2606 of the tank lid 2603 and form a closed line contact with the connecting plate 2606, thereby ensuring the airtightness of the pressurized breathing gas flowing between the liquid chamber and the main body of the ventilator 110.

[0308] Fig. Figures 28A-28E show exemplary threaded hoses of a connector according to some embodiments of the present disclosure. In some embodiments, a threaded hose of the connector may have one or more folded structures on its side wall(s). The one or more folded structures may have any shape, for example, a quarter-circle shape, a semicircle shape, an arc shape, a slot shape, a U-shape, a V-shape, a Z-shape, an M-shape, an S-shape, a C-shape, an O-shape, or the like, or any combination thereof. The one or more folded structures may impart some elasticity to the connector to establish a closed line contact with the tank cap 2603 when the tank cap 2603 is closed.

[0309] In some embodiments, one or more flexible structures may be located at the upper edge of the threaded hose of the connector. These structures may have, for example, a circular shape, an annular shape, an arc shape, a crescent shape, an inclined linear shape, a slot shape, a U-shape, a V-shape, a Z-shape, an M-shape, an S-shape, a C-shape, an O-shape, or any combination thereof. The one or more flexible structures may cause the connector to form one or more closed line contacts with the tank cap 2603 to ensure the airtightness of the pressurized breathing gas flowing between the liquid chamber and the main body of the ventilator 110.

[0310] For example, in Fig. 28A The threaded hose of the connector has a two-layer pleated structure on its side wall(s). In Fig. 28B The threaded hose of the connector can have a quarter-circle pleated structure 2801 near the top edge of the threaded hose and an arc-shaped pleated structure 2802 near the bottom edge of the threaded hose. In some embodiments, the quarter-circle pleated structure 2801 and / or the arc-shaped pleated structure 2802 can be located on the inner surface of the threaded hose. In some embodiments, the threaded hose can have an S-shaped bending structure (not shown) at its top edge. Fig. 28C, the threaded hose can have a double C-shaped bend structure 2804 at its upper edge. The double C-shaped bend structure 2804 can form two closed line contacts between the connector and the tank cap when the tank cap is closed. In Fig. 28D, the threaded hose can have an almost round structure 2805 at its upper edge. In Fig. In embodiment 28E, the threaded hose may have a crescent-shaped flexible structure 2806. The approximately circular structure 2805 and the crescent-shaped flexible structure 2806 can create a sealed, closed line contact between the connector and the tank cap when the tank cap is closed. In some embodiments, the threaded hose may have an inclined, linearly shaped flexible structure (not shown) at its upper edge and a trapezoidal slot (not shown) on its inner surface. All threaded hoses described above can be configured to ensure the airtightness of the pressurized breathing gas flowing between the liquid chamber and the main body of the ventilator 110.

[0311] Fig. Figures 29A-29D show an exemplary base plate of a ventilator 110 according to some embodiments of the present disclosure. Fig. 29A shows an outer surface of the base plate 2900. Fig. 29B shows an inner surface of the base plate 2900. Fig. Figure 29C shows a side view in cross-section of the base plate 2900. Fig. Figure 29D shows an enlarged view of one or more holes 2920 arranged in the base plate 2900. The one or more holes 2900 can be configured to drain a specific quantity of liquids from a liquid chamber (e.g., the one in Fig. 17 liquid chamber 1704). In some embodiments, during the filling of liquids into the liquid chamber or in other situations (e.g., when the ventilator 110 is tilted (i.e., the liquid chamber is tilted) or the liquid chamber is not tightly sealed), a certain amount of liquid may escape from the liquid chamber onto the base plate 2900 below the liquid chamber. The escaped liquids can exit the ventilator 110 through the holes 2920. Therefore, the escaped liquids cannot accumulate on the base plate 2900. As shown in Fig. 29C and Fig. As shown in Figure 29D, the cross-section of each of the one or more holes 2920 can have a stepped shape. In some embodiments, the holes 2920 can facilitate the drainage of any leaked fluids. In some embodiments, the holes 2920 can prevent foreign bodies (e.g., a finger of the subject 180) from entering the ventilator 110. In some embodiments, the one or more openings 2920 can conform to international standards to make the overall appearance of the ventilator 110 more elegant and / or to prevent the subject 180 from looking directly into the interior of the ventilator 110 from the outside.

[0312] Fig. 30A and Fig. Figure 30B shows an exemplary liquid chamber of a ventilator according to some embodiments of the present disclosure. Fig. 30A and Fig. Figure 30B shows schematic representations of the liquid chamber 3000 in an open mode from various angles. As in Fig. 30A and Fig. As shown in Figure 30B, the liquid chamber 3000 can comprise a tank 3002 and a tank lid 3004. In some embodiments, the tank lid 3004 can be pivotally connected to the tank 3002 via a connecting mechanism. In some embodiments, the liquid chamber 3000 can be opened from the front of the ventilator 110.

[0313] The tank 3002 can be configured to hold one or more liquids (e.g., water and / or medication). In some embodiments, the tank 3002 can have an opening for filling at least one of the liquids. In some embodiments, the opening can be opened and / or closed by opening the tank lid 3004. In some embodiments, the humidification device 220 and the main body of the ventilator 110 can be fluidically connected by closing the tank lid 3004 and fluidically separated by opening the tank lid 3004. In some embodiments, the tank 3002 and the main body can be connected by moving the tank 3002 in a mounting direction relative to the main body at an angle between the axis of rotation and the mounting direction between 20° and 160°.In some embodiments, the tank 3002 and the main body can be unlocked from each other by moving the tank 3002 in an unlocking direction relative to the main body at an angle between the axis of rotation and the unlocking direction of between 20° and 160°. In some embodiments, the angle between the fastening direction and the unlocking direction can be between -45° and 45°.

[0314] In some embodiments, the humidification device 220 and the main body of the ventilator 110 can be fluidically connected to each other via at least one connecting opening to form at least one flow channel between the main body of the ventilator 110 and the liquid chamber 3000. In some embodiments, the at least one connecting opening (e.g., the connecting piece 2301) can comprise a gas inlet opening (e.g., the second opening 2307) and a gas outlet opening (e.g., the first opening 2306). In some embodiments, the connecting opening (e.g., the connecting piece 2301) can include an axial sealing element (e.g., the first projecting structure 2311 and / or the second projecting structure 2312) for fluidically, tightly connecting the gas inlet opening 3102 and the gas outlet opening 3104. In some embodiments, an inner surface of the axial sealing element can at least partially form the flow channel.In some embodiments, the axial sealing element can define a sealing plane. In some embodiments, the angle between the sealing plane and the liquid level in the liquid chamber 3000 can be between -75° and 75° (e.g., -30° and 30°). In some embodiments, the angle between the sealing plane and the mounting direction can be between 15° and 65°. In some embodiments, the angle between the liquid level and the mounting direction and / or the unlocking direction can be between 45° and 135°.

[0315] In some embodiments, the liquid chamber 3000 can be detachably connected to the main body of the ventilator 110 by means of a push-push mechanism (e.g. the push-push mechanism 1904).

[0316] In some embodiments, the pressure direction of the push-push mechanism can be essentially perpendicular to the axis of rotation of the connection mechanism. In some embodiments, the humidification device 220 and the main body of the ventilator 110 can be fluidically connected by closing the tank lid 3004 in the pressure direction of the push-push mechanism while the tank 3002 is attached to the main body, and / or by attaching the fluid chamber 3000 to the main body in the pressure direction while the tank lid 3004 is closed.

[0317] The shape of the tank 3002 can be a cube, a cuboid, or an irregular shape that can fit a main body of the ventilator 110. The tank 3002 can be transparent, opaque, or semi-transparent. In some embodiments, the tank 3002 can have one or more markings to indicate the liquid level (e.g., water level) of the one or more liquids in the tank 3002. For example, the tank 3002 can have a first marking on a side face of the tank 3002 indicating a minimum permissible liquid level, and / or a second marking on a side face of the tank 3002 indicating a maximum permissible liquid level. As another example, the tank 3002 can have a float (e.g., a colored float) inside the tank 3002 that floats on the one or more liquids.In some embodiments, the tank 3002 can be equipped with a sensor for detecting the liquid level of one or more liquids. Further descriptions of the tank 3002 can be found elsewhere in the present disclosure (e.g., in ). Fig. 18A, 18B and 32A-32C and their descriptions).

[0318] In some embodiments, the shape of the tank lid 3004 may be similar to or different from the shape of the tank 3002. The shape of the tank lid 3004 may be a cube, a cuboid, or an irregular shape that can fit the main body of the ventilator 110. The material of the tank lid 3004 may be similar to or different from the material of the tank 3002. The tank lid 3004 may be transparent, opaque, or semi-transparent. Further descriptions of the tank lid 3004 are provided elsewhere in the present disclosure (e.g., in Fig. 31 and 37A-42B and the associated descriptions).

[0319] In some embodiments, the tank cap 3004 may have a handle 3006 and one or more latches (e.g., a first latch 3008a or a second latch 3008b) on the rear of the handle 3006. The handle 3006 may be configured to facilitate opening and / or closing the tank cap 3004. The tank 3002 may have one or more notches (e.g., a first notch 3010a and / or a second notch 3010b) in positions relative to the handle 3006 that specifically correspond to one or more latches of the handle 3006. When the tank cap 3004 is closed, the tank cap 3004 can be secured to the tank 3002 by the interaction of the one or more latches and the one or more notches. In some embodiments, the lower edge of the first notch 3010a and / or the second notch 3010b may be provided with a crossbar.In some embodiments, the first locking device 3008a and / or the second locking device 3008b can be secured by the crossbar, so that the tank cap 3004 can be attached to the tank 3002.

[0320] In some embodiments, the tank lid 3004 can be pivotally connected to the tank 3002 via a connecting mechanism 3009. In some embodiments, the tank lid 3004 can be pivotally connected to the tank 3002 via the connecting mechanism 3009 with a pivot axis. In some embodiments, the tank lid 3004 can be opened by rotating it relative to the tank 3002 by a certain angle (e.g., 90 degrees, 100 degrees, etc.). The certain angle can be associated with a maximum rotational movement of the tank lid 3004. In some embodiments, the liquid chamber 3000 can be opened from the front of the ventilator 110. In some embodiments, as in the Fig. 30A and Fig. As shown in Figure 30B, the connecting mechanism 3009 can be attached to a rear (or back surface) of the ventilator 110, and the handle 3006 can be attached to a front of the ventilator 110, such that when the tank lid 3004 is opened, an underside of the tank lid 3004 is substantially upright and faces the front of the ventilator 110. In some embodiments, the connecting mechanism 3009 can be arranged on a side surface of the ventilator 110 away from the main body of the ventilator 110, the handle 3006 can be arranged on a top surface of the ventilator 110, and the tank lid 3004 can be opened such that an underside of the tank lid 3004 is substantially upright and faces the main body of the ventilator 110 (not shown).In some embodiments, the connecting mechanism 3009 can be configured as a guide slot (not shown), and the tank lid 3004 can be opened by horizontal movement relative to the tank 3002. Further descriptions of the connecting mechanism 3009 can be found elsewhere in the present disclosure (e.g., in ). Fig. 33A-36B and the associated descriptions).

[0321] In some embodiments, the liquid chamber 3000 can incorporate a connecting piece (e.g., the fastening seal 1806 and / or the tank lid seal 1807, shown in the Fig. 18A and Fig. 18B) which is configured to create a sealed connection between the tank 3002 and the tank lid 3004, so that the liquid chamber 3000 can be sealed when the tank lid 3004 is closed with the tank 3002. The connector can be made of a material with a property such as sealing, flexibility, elasticity, or any combination thereof. For example, the connector can comprise flexible rubber (e.g., silicone) or a mixture of flexible rubber and hard rubber. In some embodiments, the connector can be attached to the underside of the tank lid 3004 and / or the top of the tank 3002.

[0322] It should be noted that the above description of the liquid chamber 3000 serves only for illustration and is not intended to limit the scope of this disclosure. For example, the tank 3002 of the liquid chamber 3000 may be equipped with a sensor for detecting the liquid level of one or more liquids. The ventilator 110 may generate a reminder based on the sensor signal when the liquid level falls below a predetermined level. As another example, the tank lid 3004 may slide at an angle relative to the tank 3002. As yet another example, the tank lid 3004 may slide relative to the tank 3002 within a specific angular range.

[0323] Fig. Figure 31 shows an exemplary tank lid for a liquid chamber of a ventilator according to some embodiments of the present disclosure. The tank lid 3004 can comprise an outer shell. The outer shell can have a front corresponding to the front of the ventilator 110, a back corresponding to the back of the ventilator 110, a top facing away from a corresponding tank (e.g., tank 3002), a bottom that can come into contact with tank 3002, a side surface near the main body of the ventilator 110, a side surface away from the main body of the ventilator 110, etc. The tank lid 3004 can include a gas inlet opening 3102, a gas outlet opening 3104, a handle 3006, a connecting piece 3108 of the connecting mechanism 3009, etc.The gas inlet port 3102 can be configured to introduce pressurized breathing gas from the main body of the ventilator 110 into the liquid chamber (e.g., the liquid chamber 3000). The gas outlet port 3104 can be configured to introduce humidified and pressurized breathing gas from the liquid chamber back into the main body of the ventilator 110.

[0324] As in Fig. As shown in Figure 31, the handle 3006 can be attached to the front of the tank lid 3004. The connecting piece 3108 of the connecting mechanism 3009 can be attached to a rear side of the tank lid 3004. The gas inlet opening 3102 and the gas outlet opening 3104 can be located on the side surface (e.g., an inclined surface) of the tank lid 3004 near the main body of the ventilator 110. In some embodiments, the gas inlet opening 3102 and the gas outlet opening 3104 can be located on a section of the underside of the tank lid 3004 (see Figure 31). Fig. 26B). The gas inlet opening 3102 and the gas outlet opening 3104 may be located close to the main body of the ventilator and must not come into contact with the tank 3002.

[0325] Fig. Figures 32A-32C show an exemplary tank of a liquid chamber of a ventilator according to some embodiments of the present disclosure. Fig. Figures 32A-32C show the tank 3002 from different views. The tank 3002 can have a front facing a user of the ventilator 110, a rear facing away from the user of the ventilator 110, a top that can come into contact with the tank lid 3004, a bottom facing away from the tank lid 3004, a side surface near the main body of the ventilator 110, a side surface away from the main body of the ventilator 110, etc. The tank 3002 can include a connecting piece 3202 of the connecting mechanism 3009, a bolt 3204, one or more notches 3010, etc.

[0326] As in Fig. As shown in Figures 32A-32C, the connecting piece 3202 of the connecting mechanism 3009 can be attached to the rear of the tank 3002. The connecting piece 3202 of the connecting mechanism 3009 and the connecting piece 3108 of the connecting mechanism 3009 can form an integral connecting mechanism 3009. The bolt 3204 can be attached to the underside of the tank 3002. The bolt 3204 can be attached to the underside of the tank 3002 via a connecting piece 3205. In some embodiments, the bolt 3204 can be part of a push-push mechanism (e.g., the one shown in Figure 32A-32C). Fig. 19-21D push-push mechanism 1904). The one or more notches 3010 can be positioned on a front of the tank 3002 to align with the handle 3006 of the tank cap 3004.

[0327] In some embodiments, the side surface of the liquid chamber 3000, located near the main body of the ventilator 110, may have an angle relative to the horizontal plane. In some embodiments, the angle between the side surface of the tank 3002 near the main body of the ventilator 110 and the horizontal plane may be greater than the angle between the inclined surface of the tank lid 3004 and the horizontal plane, which may facilitate a tight seal between the tank lid 3004 and the main body of the ventilator 110. In some embodiments, the front of the tank 3002, the rear of the tank 3002 and / or the side surface of the tank 3002, which is away from the main body of the ventilator 110, can extend downwards to form one or more guide vanes (e.g. the guide vanes 3011a, 3011b and / or 3011c) below the bottom surface.When the liquid chamber is attached to the ventilator 110, the guide plates 3011a, 3011b, and / or 3011c can form a space to accommodate a section of the base of the main body of the ventilator 110 (e.g., a section of the base plate 4410 and / or the heating device 4414, etc.). When the liquid chamber is arranged separately, the guide plates 3011a, 3011b, and / or 3011c can support the tank 3002 (or the liquid chamber) and / or protect the bolt 3204 and the connecting piece 3205. In some embodiments, the bolt 3204 and the connecting piece 3205 can also be referred to as a push rod (e.g., the one shown in...). Fig. 19 (pushrod shown, 1906).

[0328] Fig. 33A and Fig. Figure 33B shows an exemplary tank according to some embodiments of the present disclosure. As in Fig. 33A and Fig. As shown in Figure 33B, the tank 3300 can comprise one or more first connecting pieces 3310. In some embodiments, each of the one or more first connecting pieces 3310 can comprise a pin hole 3320, a projecting column 3340 and / or a first inclined guide surface 3330.

[0329] Fig. 34A and Fig. Figure 34B shows an exemplary fuel tank cap according to some embodiments of the present disclosure. As in Fig. 34A and Fig. As shown in Figure 34B, the tank cap 3400 can comprise one or more secondary connecting pieces 3410. In some embodiments, each of the one or more secondary connecting pieces 3410 can comprise a pin 3420, a second inclined guide surface 3430, a groove 3440, and / or a guide slot 3450. In some embodiments, the pin 3420 can be inserted into the pin hole 3320, so that the tank cap 3400 can be attached to the tank 3300. When the tank cap 3400 is opened and / or closed, the pin 3420 can rotate in the pin hole 3320. In some embodiments, the first inclined guide surface 3330 of the first connecting piece (of the first connecting pieces) 3310 and the second inclined guide surface 3430 of the second connecting piece (of the second connecting pieces) 3410 can be configured to facilitate the installation of the tank lid 3400 on the tank 3300.In some embodiments, the guide slot 3450 can have a first end adjacent to the groove 3440 and a second end away from the groove 3440. In some embodiments, the depth of the guide slot 3450 can gradually increase from a relatively small value at the first end to a relatively large value at the second end. In some embodiments, the guide slot 3450 can be curved to accommodate the rotational movement of the tank cap 3400 relative to the tank 3300.

[0330] Fig. 35A and Fig. Figure 35B shows a connection between a protruding column of a first connecting piece of a tank and a groove of a second connecting piece of a tank lid according to some embodiments of the present disclosure. In some embodiments, as in Fig. As shown in Figure 35A, when the fuel cap 3400 is closed, the protruding column 3340 can be located at or near the second end of the guide slot 3450. When the fuel cap 3400 is opened, the protruding column 3340 can gradually slide along the guide slot 3450 from its second end to its first end. The relatively shallow depth of the first end of the guide slot 3450, compared to its second end, can facilitate the protruding column 3340 falling into the groove 3440. The relatively deep second end of the guide slot 3450, compared to its first end, can help the second end of the guide slot 3450 to accommodate the protruding column 3340 when the fuel cap 3400 is closed.In some embodiments, when the tank cap 3400 is opened to a certain angle, the protruding column 3340 can fall into the groove 3440 and limit the rearward rotation of the tank cap 3400. Because the groove 3440 and the guide slot 3450 are separated from each other and / or the depth of the first end of the guide slot 3450 is less than the depth of the groove 3440, the protruding column 3340 cannot easily disengage from the groove 3440. When the protruding column 3340 falls into the groove 3440, the design of the separation between the groove 3440 and the guide slot 3450 and / or the design of the relatively shallow depth of the first end of the guide slot 3450 can prevent the tank cap 3400 from rotating backward without an external force (e.g., a force from the user). If a force (e.g., by a user (e.g.,When force is applied to the tank cap 3400 by the subject 180) to close the tank cap 3400, the protruding column 3340 can disengage from the groove 3440 and gradually slide along the guide slot 3450 from the first end to the second end of the guide slot 3450 until the tank cap 3400 is closed. In some embodiments, the protruding column 3340 can have a hemispherical shape, a semi-ellipsoidal shape, or a shape of another convex structure with a curved surface to reduce the friction between the protruding column 3340 and the guide slot 3450.

[0331] Fig. 36A and Fig. Figure 36B illustrates an exemplary connection between a tank and a tank lid of a liquid chamber 3600 according to some embodiments of the present disclosure. In some embodiments, the tank lid 3400 can be pivotably connected to the tank 3300 via a connection mechanism (e.g., the connection mechanism 3009) comprising the first connection piece(s) 3310 and the second connection piece(s) 3410. In some embodiments, the first connection piece(s) 3310 can be pivotably connected to the second connection piece(s) 3410.

[0332] In some embodiments, such as in Fig. 36A and Fig. As shown in Figure 36B, a pair of first connecting pieces 3310 can be located between a pair of second connecting pieces 3410. In some embodiments, the pair of second connecting pieces 3410 can be located between the pair of first connecting pieces 3310. In some embodiments, as shown in Fig. 36A and Fig. As shown in Figure 36B, the first connecting piece (or pieces) 3310 can be arranged on one rear side of the tank 3300. In some embodiments, the first connecting piece (or pieces) 3310 can be arranged on another side of the tank 3300. For example, the first connecting piece(s) 3310 can each be attached to the two side faces of the tank 3300 and near the rear of the tank 3300, and similarly, the second connecting piece(s) 3410 can be attached to the side faces of the tank lid 3400 and near the rear of the tank lid 3400. Another example: The first connecting piece (the first connecting pieces) 3310 and the second connecting piece (the second connecting pieces) 3410 can be hidden in the tank 3300 or in the tank lid 3400 and occupy a section of the space of the tank 3300 or the tank lid 3400.As another example, the first connector(s) 3310 and the second connector(s) 3410 can be attached to a side surface of the liquid chamber 3600 and opposite the gas inlet opening and / or the gas outlet opening of the gas passages above the tank 3300 (i.e., when the user is looking at the front of the ventilator 110, the first connector(s) 3310 and the second connector(s) 3410 can be attached to the right side surface of the liquid chamber 3600).

[0333] In some embodiments, the tank 3300 and / or the tank cap 3400 may have an irregular shape. Accordingly, the shapes or sizes of the first connecting piece(s) 3310 and / or the second connecting piece(s) 3410 may be irregular. For example, as shown in Fig. 36A and Fig. As shown in Figure 36B, the lengths of the pair of first connecting pieces 3310 can differ to accommodate the irregular shape of the tank 3300 or the tank lid 3400, so that when the tank lid 3400 is opened, one underside of the tank lid 3400 can be substantially upright and point towards the front of the ventilator 110. In some embodiments, the first connecting pieces 3310 and / or the second connecting pieces 3410 can be regularly symmetrical if the shape of the tank 3300 and / or the tank lid 3400 is regular.

[0334] As in Fig. As shown in Figure 36B, the second connecting piece (or pieces) 3410 can include or be connected to a baffle plate 3660. In some embodiments, when the tank cap 3400 is opened to a certain angle, the baffle plate 3660 can be blocked by a section of the first connecting piece (or pieces) 3310, thereby preventing over-rotation of the tank cap 3400 and limiting its maximum rotational movement. In some embodiments, the liquid chamber 3600 can include one or more fastening shafts between the tank cap 3400 and the tank 3300. An exemplary fastening shaft can refer to a pin 3420 (see Figure 36B). Fig. 34B). In some embodiments, the mounting shaft(s) may comprise a first mounting shaft and a second mounting shaft. In some embodiments, the height of the first mounting shaft may be greater than the height of the second mounting shaft. In some embodiments, the first mounting shaft may be positioned higher than the second mounting shaft.

[0335] It should be noted that the above description of the connection between the tank 3300 and the tank cap 3400 serves only for illustration and is not intended to limit the scope of this disclosure. In some embodiments, the connection between the tank 3300 and the tank cap 3400 can be realized in a different way, for example, as a hinge connection. For example, the tank 3300 and the tank cap 3400 can each have a column-shaped hole on the same horizontal line, and the tank 3300 and the tank cap 3400 can be connected by a hinge pin that passes through the hole(s).As another example, one end of the tank 3300 can have a hollow column with a C-shape, and correspondingly, one end of the tank lid 3400 can have a column that fits the hollow column, so that when the tank lid 3400 is installed on the tank 3300, the column can be clamped in the C-shaped hollow column to realize the pivotable connection between the tank 3300 and the tank lid 3400.

[0336] Fig. 37A and Fig. Figure 37B shows an exemplary tank cap according to some embodiments of the present disclosure. In some embodiments, as in Fig. 37A and Fig. As shown in Figure 37B, the tank lid 3700 can comprise an outer shell 3710, a connecting plate 3720, an inner shell 3730, a gas passage sealing frame 3740, a base plate 3750, a mounting frame 3760, and a tank lid sealing frame 3770. In some embodiments, the connecting plate 3720 can comprise a first opening 3721 and a second opening 3722. In some embodiments, the first opening 3721 can be a gas inlet opening of the tank lid 3700 (also referred to as a humidification device gas inlet opening). In some embodiments, the second opening 3722 can be a gas outlet opening of the tank lid 3700 (also referred to as a humidification device gas outlet opening). In some embodiments, the connecting plate 3720 can be arranged inclined outside the outer shell 3710.

[0337] Fig. Figure 38 shows an exemplary outer shell according to some embodiments of the present disclosure. In some embodiments, as in Fig. As shown in Figure 38, the outer shell 3710 can comprise a first opening 3711, a second opening 3712, a frame 3713, a barrier 3714, one or more first clamps 3715, and one or more second clamps 3716. The first opening 3711 and the first opening 3721 of the connecting plate 3720 can serve as gas inlet openings for the tank lid 3700. The second opening 3712 and the second opening 3722 of the connecting plate 3720 can serve as gas outlet openings for the tank lid 3700. The connecting plate 3720 can be connected (e.g., fastened) to the connecting frame 3713. In some embodiments, the connecting plate 3720 can be connected to the connecting frame 3713 by gluing, riveting, interlocking, clamping, interlocking, or the like, or any combination thereof.The barrier 3714 can be configured to separate the gas inlet opening and the gas outlet opening of the tank lid 3700 between the outer shell 3710 and the connecting plate 3720, so that the breathing gas flowing into the tank lid 3700 can be isolated from the breathing gas flowing out of the tank lid 3700.

[0338] In some embodiments, a sealing strip (not shown) can be used to improve the airtightness of the connection between the connecting frame 3713 and the connecting plate 3720. For example, all connection points between the connecting frame 3713 and the connecting plate 3720 can be provided with the sealing strip. In some embodiments, a sealing strip (not shown) can be attached to the connection between the barrier 3714 and the connecting plate 3720. In some embodiments, as shown in Fig. As shown in Figure 37A, a first groove 37215 and / or a second groove 37225 may be provided between the outer shell 3710 and the connecting plate 3720. The first groove 37215 and / or the second groove 37225 may be configured to accommodate a portion of the material from a tank (e.g., the one shown in Figure 37A). Fig. 36A and Fig. 36B tank 3300) to collect any leaking fluid(s) and prevent the fluid(s) from entering the main body of the ventilator 110. For example, if the fluid chamber (e.g., the one shown in 36B) leaks, the fluid chamber should be able to collect any leaking fluid(s) and prevent the fluid(s) from entering the main body of the ventilator 110. Fig. 36A and Fig. If the liquid chamber 3600 shown in 36B is tilted or arranged at an angle, some of the liquids filled into the tank 3300 may flow into the tank lid 3700, and the first groove 37215 and / or the second groove 37225 may collect that portion of the liquids and prevent that portion of the liquids from entering the main body of the ventilator 110.

[0339] In some embodiments, the bottom plate 3750 can be attached to the inner liner 3730 by gluing, riveting, snapping, clamping, interlocking, or any combination thereof. In some embodiments, the bottom plate 3750 and the inner liner 3730 can be formed as a single piece. In some embodiments, the first clamp(s) 3715 can be configured to fasten the inner liner 3730 and the bottom plate 3750 to the outer liner 3710. For example, the inner liner 3730 and the bottom plate 3750 can be clamped to the outer liner 3710 by the first clamp 3715. In some embodiments, the first clamp 3715 can be located in the center of an inner wall of the outer liner 3710 opposite the connecting frame 3713. In some embodiments, the second clamp 3716 can be configured to attach the mounting frame 3760 to the outer shell 3710.In some embodiments, several (e.g., 4, 6, 8, etc.) second clamps 3716 can be attached to the inner wall(s) of the outer shell 3710 to fasten the mounting frame 3760 to the outer shell 3710. For example, as in . Fig. Figure 38 shows that each of the two side walls of the outer shell 3710, which adjoins the connecting frame 3713, has three second clamps 3716. In some embodiments, the tank cap sealing frame 3770 can be attached to the mounting frame 3760. In some embodiments, the mounting frame 3760 and the tank cap sealing frame 3770 can be connected by gluing, clamping, interlocking, or the like, or any combination thereof. The tank cap sealing frame 3770 can be configured to ensure the airtightness of the connection between the tank (e.g., the one shown in Figure 38) and the tank cap sealing frame 3710. Fig. 36A and Fig. 36B) and the tank cap 3700. In some embodiments, the tank cap sealing frame 3770 may be made of a sealing material comprising, for example, silicone, rubber, nylon, or the like, or any combination thereof. In some embodiments, some or all components of the outer shell 3710 (e.g., the first opening 3711, the second opening 3712, the frame 3713, the barrier 3714, the first clamp 3715, and / or the second clamp 3716) may be configured as a single piece.

[0340] In some embodiments, the outer shell 3710 can be connected to and / or connectable with the tank and / or the tank lid 3700. In some embodiments, the outer shell 3710 can be pivotally arranged relative to the tank. In some embodiments, a side wall of the liquid chamber in contact with the liquid can be formed at least partially by an outer wall of the tank, which forms the outer surface of the humidification device 220. In some embodiments, the tank can be configured with only one opening for filling with liquid(s) and / or for exchanging pressurized breathing gas. In some embodiments, the tank lid 3700 can be pivotally connected to the tank via a connecting mechanism.In some embodiments, at least a portion of the side of the first gas passage near the connecting mechanism may be covered in the flow direction by a side edge of the humidification device gas inlet opening of the liquid chamber. In some embodiments, at least a portion of the side of the second gas passage near the connecting mechanism may be covered in the flow direction by a side edge of the humidification device gas outlet opening of the liquid chamber. In some embodiments, the distance between the connecting mechanism and the humidification device gas outlet opening may be less than the distance between the connecting mechanism and the humidification device gas inlet opening.

[0341] Fig. 39A and Fig. Figure 39B shows an exemplary inner lining of a tank cap according to some embodiments of the present disclosure. In some embodiments, as in Fig. 39A and Fig. As shown in Figure 39B, the inner shell 3730 can have a gas inlet opening 3731 and / or a gas outlet opening 3732. In some embodiments, the gas inlet opening 3731 can be configured to allow a gas (e.g., the pressurized breathing gas) to pass through a first gas passage (e.g., a gas passage such as the one shown in Figure 39B). Fig. (as shown in the arrows on 39A) into the liquid chamber. As shown in Fig. As shown in Figure 39A, the first gas passage (also referred to as the gas inlet passage) can include an outlet opening 3733. In some embodiments, the outlet opening 3733 of the first gas passage can be configured to connect the first gas passage to the tank. The gas can exit the first gas passage through the outlet opening 3733 and enter the liquid chamber. In some embodiments, the inner shell 3730 can include a guide plate 3734. In some embodiments, the guide plate 3734 can be attached to an edge of the outlet opening 3733 of the first gas passage. In some embodiments, the guide plate 3734 can be attached to a top edge and / or a side edge (e.g., the side edge closer to the gas inlet opening 3731 and / or the gas outlet opening 3732 of the inner shell 3730) of the outlet opening 3733 of the first gas passage.In some embodiments, the guide plate 3734 can be configured to direct the gas downwards to the tank below the tank lid 3700. Therefore, the guide plate 3734 can reduce the amount of gas flowing into other spaces (e.g., the space between the outer shell 3710 and the inner shell 3730). In some embodiments, the frame for the gas passages 3740 can be connected to the inner shell 3730, ensuring an airtight seal between the inner shell 3730 and the outer shell 3710. In some embodiments, the frame for sealing the gas passage 3740 can be attached to the inner shell 3730 by gluing, riveting, snapping, clamping, interlocking, or any combination thereof.

[0342] In some embodiments, the gas inlet opening 3731 (also referred to as the humidification device gas inlet opening) and the outlet openings 3733 of the first gas passage can be arranged on different side surfaces of the inner shell 3730. For example, as in Fig. As shown in Figure 39A, the gas inlet opening 3731 can be arranged on a right-hand section of a first side surface of the inner shell 3730, and the outlet opening 3733 of the first gas passage can be arranged on a left-hand section of a second side surface of the inner shell 3730, the second side surface of the inner shell 3730 being adjacent to the first side surface of the inner shell 3730 in a clockwise direction. The gas inlet opening 3731 and the outlet opening 3733 of the first gas passage can be arranged as shown in Fig. The liquid(s) (e.g., water) in the tank are arranged as shown in Figure 39A so that, regardless of how the ventilator 110 is positioned or moved, it is difficult for the liquid(s) in the tank to enter the main body of the ventilator 110. In some embodiments, the distance between the outlet opening 3733 of the first gas passage and the humidification device gas inlet opening may be greater than the distance between the outlet opening 3733 of the first gas passage and the humidification device gas outlet opening. In some embodiments, the first side surface of the outer shell 3710 of the liquid chamber may face the first side wall of the housing of the main body of the ventilator 110.

[0343] In some embodiments, the gas outlet opening 3732 (also referred to as the humidification device gas outlet opening) can be configured to allow a gas (e.g., the humidified and pressurized breathing gas) to pass through a second gas passage (e.g., a gas passage such as that provided by the Fig. (as indicated by the arrows shown in 39B) is inserted back into the main body of the ventilator 110. As shown in Fig. As shown in Figure 39B, the second gas passage (also referred to as the gas outlet passage) can include an inlet opening 3735. In some embodiments, the inlet opening 3735 of the second gas passage can be configured to connect the second gas passage to the tank. The gas can flow from the liquid chamber into the second gas passage through the inlet opening 3735. In some embodiments, the first gas passage and / or the second gas passage can have a substantially rectangular cross-section. In some embodiments, the first gas passage and the second gas passage can intersect.

[0344] In some embodiments, the gas outlet opening 3732 (also referred to as the humidification device gas outlet opening) and the inlet opening 3735 of the second gas passage can be arranged on different side surfaces of the inner shell 3730. For example, as in Fig. As shown in Figure 39B, the gas outlet opening 3732 may be arranged on a left section of the first side surface of the inner shell 3730, and the inlet opening 3735 of the second gas passage may be arranged on a right section of a third side surface of the inner shell 3730, the third side surface of the inner shell 3730 being adjacent to the first side surface of the inner shell 3730 in a counterclockwise direction. The gas outlet opening 3732 and the inlet opening 3735 of the second gas passage may be arranged as shown in Fig. The arrangement shown in Figure 39B is such that the liquid(s) (e.g., water) in the tank can only enter the main body of the ventilator 110 with difficulty, regardless of how the ventilator 110 is positioned or moved. In some embodiments, the first and second gas passages in the liquid chamber can be configured as non-parallel (e.g., crossed), causing the outlet opening 3733 of the first gas passage and the inlet opening 3735 of the second gas passage to point in different directions. In some embodiments, the distance between the inlet opening 3735 of the second gas passage and the humidification device gas outlet opening can be greater than the distance between the inlet opening 3735 of the second gas passage and the humidification device gas inlet opening.

[0345] In some embodiments, the gas inlet opening and / or the gas outlet opening of the tank lid 3700 (i.e., the gas inlet opening of the liquid chamber humidification device and / or the gas outlet opening of the liquid chamber humidification device) can be arranged on a first side surface of the outer shell 3710 (corresponding to the first side surface of the inner shell 3730) of the liquid chamber. In some embodiments, the outlet openings 3733 of the first gas passage and the inlet openings 3735 of the second gas passage can be arranged on opposite side surfaces of the inner shell 3730. For example, the outlet opening 3733 of the first gas passage can be arranged on the second side surface of the inner shell 3730, while the inlet opening 3735 of the second gas passage can be arranged on the third side surface of the inner shell 3730.This means that the outlet opening 3733 of the first gas passage can face a second side surface of the outer shell 3710, which corresponds to the second side surface of the inner shell 3730, while the inlet opening 3735 of the second gas passage can face a third side surface of the outer shell 3710, which corresponds to the third side surface of the inner shell 3730.

[0346] In some embodiments, such as in Fig. As shown in Figure 39B, a section or all sections of the base plate 3750 can be located below a lower edge of the gas inlet opening 37311 and / or a lower edge of the gas outlet opening 37321 of the tank lid 3700. Therefore, the base plate 3750 can contain a portion of the liquid(s) in the tank, and the height difference between the base plate 3750 and the lower edge of the gas inlet opening 37311 and / or the lower edge of the gas outlet opening 37321 can prevent the liquid(s) in the tank from entering the main body of the ventilator 110. In some embodiments, the inner shell 3730 can have one or more third clamps 3736. The third clamps 3736 can be configured to connect the gas passage frame 3740 to the inner shell 3730. As shown in Figure 39B, the inner shell 3730 can be configured to connect the gas passage frame 3740 to the inner shell 3730. Fig. As shown in Figure 39B, the inner shell 3730 can have three clamps 3736 which can be arranged at equal intervals on the lower edge of the first side surface of the inner shell 3730.

[0347] Fig. Figure 40 shows an exemplary base plate of an inner shell of a tank cap according to some embodiments of the present disclosure. As in Fig. As shown in Figure 40, the base plate 3750 can have one or more sealing strips 3752 arranged along the edge(s) of the base plate 3750. The sealing strip(s) 3752 can be configured to improve the airtightness of the connection between the base plate 3750 and the inner shell 3730. In some embodiments, the base plate 3750 can comprise a second gas passage base (e.g., the second inclined plate 3751) and a first gas passage base (e.g., the remainder of the base plate 3750 except for the second inclined plate 3751).

[0348] Fig. 41A and Fig. Figure 41B illustrates an exemplary internal structure of an inner shell of a tank lid according to some embodiments of the present disclosure. Fig. 41A shows the gas inlet passage of the 3700 tank cap. Fig. Figure 41A shows a top view of the tank cap 3710 without the base plate 3750. Fig. 41B shows the gas outlet channel of the 3700 tank cap. Fig. Figure 41B shows a sectional view of the tank cap 3700. In some embodiments, the gas inlet passage (i.e., the first gas passage, as shown in the figure) can be Fig. (indicated by the arrows shown in 41A) comprise a first section and a second section. The first section of the first gas passage may extend from the gas inlet opening (e.g., the first opening 3721) of the tank cap 3700 to a common plane (e.g., the common plane 3737, defined by the parallelogram with dotted lines in Fig. 41A and Fig. 41B is shown). The second section of the first gas passage can extend from the common plane 3737 to the outlet opening 3733 of the first gas passage. In some embodiments, the second gas passage can comprise a first section and a second section. The first section of the second gas passage can extend from the inlet opening of the second gas passage 3735 to the common plane 3737. The second section of the second gas passage can extend from the common plane 3737 to the gas outlet opening (e.g., the second opening 3722) of the tank lid 3700.

[0349] In some embodiments, the first section of the first gas passage can run substantially parallel to the second section of the second gas passage along a direction that forms an angle with the first side face (e.g., the side face including the connecting frame 3713, as in Fig. 38) of the outer shell 3710 of the tank lid 3700 (e.g., substantially perpendicular to it). In some embodiments, the second section of the first gas passage and the first section of the second gas passage may be arranged in different layers. In some embodiments, a first projection of the second section of the first gas passage onto a horizontal plane and a second projection of the first section of the second gas passage onto the horizontal plane may intersect or at least partially overlap. In some embodiments, as shown in Fig. 41A and Fig. As shown in Figure 41B, the second section of the first gas passage can be arranged below the first section of the second gas passage. In some embodiments, the first section of the second gas passage can be arranged below the second section of the first gas passage. In some embodiments, an area of ​​a first cross-section of the first gas passage on the common plane can be equal to or smaller than a section (e.g., half) of an area of ​​the gas inlet opening (e.g., the first opening 3721) of the tank lid 3700. In some embodiments, an area of ​​a second cross-section of the second gas passage on the common plane can be equal to or smaller than a section (e.g., half) of an area of ​​the gas outlet opening (e.g., the second opening 3722) of the tank lid 3700.

[0350] In some embodiments, a first inclined plate 3739 (see Fig. 39B and Fig. 41B) between the first cross-section and the gas inlet opening (e.g., the first opening 3721) of the tank lid 3700. The first inclined plate 3739 can be configured to smooth the flow of the pressurized breathing gas in the first gas passage. In some embodiments, the first inclined plate 3739 (see Fig. 39B and Fig. 41B) as part of the inner shell 3730. In some embodiments, a second inclined plate 3751 may be arranged between the second cross-section and the gas outlet opening (e.g., the second opening 3722) of the tank lid 3700. The second inclined plate 3751 may be configured to smooth the flow of the humidified and pressurized breathing gas in the second gas passage. In some embodiments, the second inclined plate 3751 (see Fig. 40 and Fig. 41B) may be attached to the bottom of the tank lid 3700. For example, the second inclined plate 3751 may be part of the base plate 3750.

[0351] It should be noted that the above description of the 3700 tank cap serves only for illustration and is not intended to limit the scope of the present disclosure. For example, as shown in Fig. 42A and Fig. As shown in Figure 42B, the inner shell 4230 of the tank cap 4200 does not include the first inclined plate. As another example, the tank cap 4200 may not include the second inclined plate. As yet another example, the base of the tank cap 4200 may be aligned in the horizontal plane with a lower edge of the gas inlet opening 4221 and / or a lower edge of the gas outlet opening 4222. Fig. 42A and Fig. Figure 42B shows another exemplary tank cover according to some embodiments of the present disclosure.

[0352] Fig. Figures 43A-43C show exemplary electronic components in a main body of a ventilator according to some embodiments of the present disclosure. In some embodiments, as in Fig. As shown in Figure 43A, the electronic components 4300 in the main body can include one or more printed circuit boards (PCBs) 4320, an on / off switch 4310, a wireless module assembly 4330, a rotary knob 4350, a Secure Digital (SD) card read / write memory module 4340, a control panel 4360, a home button 4370 and a display 4380. In some embodiments, the printed circuit board (PCB) 4320 can include one or more processors (e.g., ARM, PLD, MCU, DSP, FPGA, SoC), one or more controllers, one or more resistors, one or more capacitors, one or more inductors, one or more crystal oscillators, one or more ceramic filters, one or more mechanical switches, one or more connectors, one or more diodes, one or more transistors, one or more thyristors, one or more integrated circuits, one or more sensors (e.g.,(a flow sensor, a pressure sensor, a humidity sensor, a temperature sensor, etc.). In some embodiments, the one or more processors (and / or the one or more controllers) can be coupled with one or more electronic components 4300 of the printed circuit board (PCB) 4320, the on / off button 4310, the radio module assembly 4330, the rotary knob 4350, the home button 4370, and the display 4380 to control the operation of the ventilator 110. For example, when a user (e.g., the subject 180) presses the on / off button 4310, the processor(s) can be triggered to control the start or stop of the ventilator 110. In some embodiments, the gas pressurization unit 210 can be coupled (or electrically connected) to the electronic components 4300. In some embodiments, the electronic components 4300 may include the gas pressure application unit 210.

[0353] In some embodiments, a first hole 4361 may be provided on the control panel 4360, and the rotary knob 4350 may be connected (or coupled) to the printed circuit board (PCB) 4320 via the first hole 4361. In some embodiments, the controller(s) may control the operation(s) of one or more of the electronic components 4300 when the rotary knob 4350 is turned. In some embodiments, the rotary knob 4350 may be configured to adjust the brightness of the display 4380. For example, if the rotary knob 4350 is gradually turned in a certain direction (clockwise or counterclockwise), the brightness of the display 4380 may increase, and correspondingly, the brightness of the display 4380 may decrease when the rotary knob 4350 is turned in the opposite direction. In some other embodiments, the rotary knob 4350 may be configured to adjust the gas flow.For example, if the rotary knob 4350 is gradually turned in a certain direction (clockwise or counterclockwise), the gas flow can increase, and correspondingly, the gas flow can decrease if the rotary knob 4350 is turned in the opposite direction. In some embodiments, the rotary knob 4350 can be used as an on / off switch. In some embodiments, the rotary knob 4350 can be configured to adjust the pressure of the breathing gas flowing in the gas passages of the ventilator 110. For example, if the rotary knob 4350 is gradually turned in a certain direction (clockwise or counterclockwise), the pressure of the breathing gas can increase, and if the rotary knob 4350 is turned in the opposite direction, the pressure of the breathing gas can decrease accordingly.

[0354] In some embodiments, the control panel 4360 can be configured to protect the display 4380 from damage and / or to enhance the overall appearance of the ventilator 110. In some embodiments, the control panel 4360 can be transparent. In some embodiments, the information displayed on the display 4380 can be viewed through the control panel 4360. The information displayed on the display 4380 can include a user interface, one or more operating parameters generated or acquired during the operation of the ventilator 110, vital parameters of the subject (e.g., person 180), etc. In some embodiments, the operating parameters can include the pressure of the breathing gas, the temperature of the breathing gas, the humidity of the breathing gas, an operating mode of the ventilator 110, the status of the peripheral device, operating time, etc.In some embodiments, the vital parameter information may include the user's respiratory rate, snoring, sleep status, tidal volume, etc. In some other embodiments, a light sensor configured to detect the intensity of ambient light may be mounted outside the ventilator 110 and coupled to the electronic components 4300 so that the processor(s) (and / or controller) can automatically control the brightness of the display device 4380 based on the intensity of the ambient light. In some embodiments, the display device 4380 may comprise a liquid crystal display (LCD), a light-emitting diode (LED) display, or the like.

[0355] In some embodiments, the Home button 4370 can be configured to reset the operating parameters to their original or initial values. In some embodiments, the Home button 4370 can be configured to control the interface to return to a home page or a previous page. In some embodiments, a second hole 4362 can be provided on the control panel 4360, and the Home button 4370 can be connected (or coupled) to the printed circuit board (PCB) 4320 via the second hole 4362.

[0356] In some embodiments, the wireless module assembly 4330 can be configured to control the ventilator 110. In some embodiments, the wireless module assembly 4330 can include a Bluetooth module, a ZigBee module, a cellular communication module, a radio frequency (RF) communication module, a Wi-Fi module, or the like, or a combination thereof. In some embodiments, the ventilator 110 can be connected to the internet via the Wi-Fi module. In some embodiments, the operating parameters of the ventilator 110 can be set (or controlled or changed) by a remote computer (e.g., a mobile terminal). In some embodiments, the radio frequency (RF) communication module can be paired with a remote control, and a user (e.g., subject 180) can remotely start, stop, adjust, and / or control the operation of the ventilator 110 using the remote control.In some embodiments, the wireless module assembly 4330 can be coupled with one or more sensors installed in the ventilator 110 to obtain information acquired by the sensor(s). For example, the wireless module assembly 4330 can be coupled with a flow sensor located in the gas passages of the ventilator 110 to obtain the flow of the breathing gas.

[0357] In some embodiments, the Secure Digital (SD) card read / write memory module 4340 can be configured to accept a Secure Digital (SD) card, read information from the SD card, and / or write information to the SD card. It should be noted that the Secure Digital (SD) card may be optional. In some embodiments, the Secure Digital (SD) card can be configured to store the user's vital signs, operating parameters generated or recorded during operation of the Ventilator 110, and / or one or more preset operating parameters. In some embodiments, the storage size of the Secure Digital (SD) card can be selected by the user.

[0358] Fig. 44A and Fig. Figure 44B shows an exemplary heating device according to some embodiments of the present disclosure. As in Fig. As shown in Figure 44A, a heating device 4414 can be mounted on the base plate 4410 of the main body of a ventilator 110. In some embodiments, at least a section of the base plate 4410 can be mounted under a liquid chamber (e.g., the liquid chamber 320). The heating device 4414 can be configured to heat the liquid(s) in the liquid chamber and / or to accelerate the evaporation of the liquid(s) in the liquid chamber. In some embodiments, the heating device 4414 can be, as shown in Fig. Figure 44B shows a bracket 4440, a heating plate 4420, and a mounting frame 4430. The mounting frame 4430 can be configured to secure the heating plate 4420 to the bracket 4440. In some embodiments, the heating plate 4420 can be secured to the bracket 4440 by one or more screws (or snap fasteners) or by another fastening mechanism. The heating plate 4420 can, for example, be an electric heating plate made of stainless steel (electric mica heating plate), an electric heating plate made of ceramic, an electric heating plate made of cast aluminum, an electric heating plate made of cast copper, or the like, or a combination thereof. In some embodiments, one or more springs 4460 can be arranged below the bracket 4440 so that the heating device 4414 can move up and down when pressure is applied to or removed from the heating plate 4420.Further descriptions of the connection between the heating device 4414 and the base plate 4410 can be found elsewhere in the present disclosure (e.g. in . Fig. 22A-22D and the associated descriptions).

[0359] Fig. Figure 45 shows an exemplary liquid chamber according to some embodiments of the present disclosure. In some embodiments, the liquid chamber 4500 may comprise a tank 4530. The tank 4530 may be configured to hold one or more liquids. In some embodiments, the tank 4530 may comprise a heat-conducting plate 4510. The heat-conducting plate 4510 may be configured to conduct the heat generated by the heating plate 4420 to the liquid(s) in the tank 4530, so that the liquid(s) can evaporate to produce vapor for humidifying the breathing gas. In some embodiments, the heat-conducting plate 4510 may consist of a thermally conductive material, which includes, for example, one or more thermally conductive metals (e.g., copper, aluminum), thermally conductive silica gel, or the like, or a combination thereof.In some embodiments, one or more thermally conductive coatings, such as thermally conductive silica gel, can be arranged on the surface of the thermally conductive plate 4510 to promote thermal contact between the heating plate 4420 and the thermally conductive plate 4510.

[0360] In some embodiments, the heat-conducting plate 4510 can be attached to the underside of the tank 4530 by screws or adhesive. In some embodiments, the underside of the tank 4530 can have a groove 4520. In some embodiments, the shape of the groove 4520 can match the shape of the heating plate 4420, so that when the tank 4530 is mounted on the base plate 4410, the heating device 4414 can be wholly or partially enclosed in the groove 4520. Therefore, the heating plate 4420 and the heat-conducting plate 4510 can be tightly connected.

[0361] To reduce heat loss, it may be necessary to ensure that the heating plate 4420 and the heat-conducting plate 4510 are in close contact with each other. As shown in Fig. As shown in Figure 44B, one or more springs 4460 can be arranged below the heating plate 4420. When the tank 4530 is mounted above the heating device 4414, the spring(s) 4460 can be compressed, and the compressed spring(s) 4460 can press the heating plate 4420 against the heat-conducting plate 4510, thereby increasing the contact pressure between the heating plate 4420 and the heat-conducting plate 4510 and ensuring close contact between them. In some embodiments, several elastic columns can be used instead of the spring(s) 4460.

[0362] In some other embodiments, one or more heating elements, one or more electrodes, or one or more ultrasonic atomizers can be installed directly in the tank 4530 to heat the liquid(s) in the tank 4530. In some embodiments, the heating device 4414 can be coupled (or electrically connected) to the electronic components 4300. The control(s) can control the start, stop, interruption, and resumption of heating of the heating device 4414, the heating rate of the heating device 4414, the heating power of the heating device 4414, etc., to regulate the humidity of the breathing gas.

[0363] Furthermore, certain terms have been used to describe embodiments of the present disclosure. For example, the terms “an embodiment,” “an embodiment,” and / or “some embodiments” mean that a particular feature, structure, or property described in connection with the embodiment is included in at least one embodiment of the present disclosure. Therefore, it is emphasized and should be noted that two or more references to “an embodiment,” “an embodiment,” or “an alternative embodiment” in different sections of this description do not necessarily all refer to the same embodiment. Moreover, the particular features, structures, or properties may be combined appropriately in one or more embodiments of the present disclosure.

[0364] Furthermore, it will be clear to a person skilled in the art that aspects of the present disclosure may be illustrated and described herein in any number of patentable classes or contexts, including all new and useful processes, machines, manufacturing processes, or material compositions, or all new and useful improvements thereto. Accordingly, aspects of the present disclosure may be implemented entirely in hardware, entirely in software (including firmware, resident software, microcode, etc.), or in a combination of software and hardware implementation, which may be generally referred to herein as a "unit," "module," or "system." In addition, aspects of the present disclosure may take the form of a computer program product embodied in one or more computer-readable media containing computer-readable program code.

[0365] It should also be noted that in the preceding description of the embodiments of the present disclosure, various features are sometimes combined in a single embodiment, figure, or description in order to streamline the disclosure and facilitate understanding of one or more of the various inventive embodiments. However, this type of disclosure is not to be interpreted as reflecting the intention that the claimed subject matter requires more features than are expressly mentioned in each claim. Rather, embodiments of the invention consist of fewer than all the features of a single previously disclosed embodiment.

[0366] In some embodiments, the numbers expressing quantities or properties used to describe and claim specific embodiments of the application are, in some cases, to be understood by the terms "approximately," "about," or "essentially." For example, "approximately," "about," or "essentially" may mean a deviation of ±20% of the described value unless otherwise specified. Accordingly, in some embodiments, the numerical parameters specified in the written description and the appended claims are approximate values ​​that may vary depending on the desired properties to be achieved with a particular embodiment. In some embodiments, the numerical parameters should be interpreted taking into account the number of significant figures specified and applying standard rounding methods.Notwithstanding the fact that the numerical ranges and parameters that define the broad scope of some embodiments of the application are approximate values, the numerical values ​​given in the specific examples are given as accurately as possible.

Claims

[1] Ventilator (110, 300, 1700) configured to deliver a respiratory gas to a patient interface (170), comprising a gas pressurization unit (808) configured to generate a pressurized respiratory gas by pressurizing the respiratory gas; wherein the gas pressurization unit (808) is arranged in a main body (310, 1702) of the ventilator (110, 300, 1700) and a connecting piece (1101) is configured to attach the gas pressurization unit (808) to an interior of the main body (310, 1702) of the ventilator (110, 300, 1700) and / or to dampen vibrations of the gas pressurization unit (808), wherein the connecting piece (1101) comprises a fastening part (1302) configured to attach the connecting part (1101) to the interior of the main body (310, 1702) of the ventilator (110, 300, 1700), wherein the fastening part (1302) is configured in the form of a flat plate and includes an opening,which is designed to allow the passage of pressurized breathing gas, wherein the connecting piece (1101) comprises a connecting part (1301), the connecting part (1301) having a tubular structure, a first end (1303) of the connecting part (1301) being attached to the fastening part (1302), a second end (1304) of the connecting part (1301) being designed to be connected to the outlet opening (1004) of the gas pressurization unit (808), the connecting part (1301) being able to allow the pressurized breathing gas to pass through the tubular structure to the opening of the fastening part (1302), and wherein the connecting part (1301) and the fastening part (1302) are made of different materials. [2] Ventilator (110, 300, 1700) according to claim 1, wherein the connecting part (1301) is made of one or more flexible materials and the fastening part (1302) is made of one or more hard materials. [3] Ventilator (110, 300, 1700) according to claim 1 or 2, wherein the fastening part (1302) and the connecting part (1301) are formed in one piece. [4] Ventilator (110, 300, 1700) according to one of claims 1 to 3, wherein the connecting part (1301) comprises one or more ring-shaped structures and the one or more ring-shaped structures can be connected end to end. [5] Ventilator (110, 300, 1700) according to any one of claims 1 to 4, wherein the main body (310, 1702) of the ventilator (110, 300, 1700) comprises one or more mounting slots (1105) which are coupled to the mounting part (1302) of the connecting piece (1101). [6] Ventilator (110, 300, 1700) according to claim 5, wherein the main body (310, 1702) of the ventilator (110, 300, 1700) comprises a noise reduction box (801) and wherein the one or more mounting slots (1105) are part of the noise reduction box (801). [7] Ventilator (110, 300, 1700) according to claim 6, wherein the noise reduction box (801) is a sealed box comprising a gas inlet port (809) and a gas outlet port (810), wherein the noise reduction box (801) accommodates the gas pressurization unit (808) and comprises one or more sound-absorbing materials (802, 803, 804) attached to its inner walls. [8] Respiratory device (110, 300, 1700) according to claim 7, wherein the one or more sound-absorbing materials (802, 803, 804) form a gas passage with one or more twists and / or one or more bends within the noise-absorbing box (801). [9] Respiratory device (110, 300, 1700) according to claim 7 or 8, further comprising one or more frames (805, 806, 807) configured to attach one or more sound-absorbing materials (802, 803, 804) to the inner walls of the sound-absorbing box (801). [10] Ventilator (110, 300, 1700) according to any one of claims 1 to 9, wherein the gas pressurization unit (808) comprises one or more supports (1102) configured to secure the gas pressurization unit (808) within the noise reduction box (801) of the ventilator (110, 300, 1700). [11] Respiratory device (110, 300, 1700) according to claim 10, wherein the box body (1003) of the noise reduction box (801) comprises one or more corresponding limiting holes (1104) designed to limit the position of the supports (1102). [12] Ventilator (110, 300, 1700) according to claim 10 or 11, wherein each of the supports (1102) comprises a support section and a buffer section, wherein the support section of each of the supports (1102) is made of a hard material to fix the gas pressurization unit (808) in the noise damping box (801), and the buffer section of each of the supports (1102) is made of a flexible material to dampen the vibrations of the gas pressurization unit (808) and reduce noise.

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