Humidification assembly and breathing ventilation equipment

Abstract

The invention provides a humidifying assembly and breathing ventilation equipment. The humidification assembly is used for humidifying pressurized breathing gas provided by breathing ventilation equipment, the humidification assembly comprises a liquid cavity used for containing one or more kinds of liquid, the liquid cavity comprises a box body and a box cover, and the box cover comprises a first gas channel, a second gas channel, a humidification assembly gas inlet and a humidification assembly gas outlet. The humidification assembly gas inlet is configured to introduce the pressurized breathing gas into the box body through the first gas channel, and the humidification assembly gas outlet is configured to introduce the humidified and pressurized breathing gas out of the box body through the second gas channel.

Description

[0001] This application is a divisional application of the Chinese patent application with application number 201880093168.8 filed on October 26, 2018. Technical Field

[0002] The present application relates generally to the detection, diagnosis, treatment, prevention and amelioration of respiratory related conditions and, more particularly, to humidification assemblies and respiratory ventilation devices. Background Art

[0003] Breathing is important for maintaining the life of a subject (e.g., a human body). A subject's respiratory system facilitates gas exchange. A subject's nose and / or mouth form the entrance to the subject's airway. There are a range of breathing disorders (e.g., apnea, hypopnea, hyperpnea, snoring, etc.). Breathing disorders may threaten a subject's health (and / or life). Therefore, it is desirable to develop systems and methods for delivering breathing gases to a subject. Summary of the invention

[0004] The purpose of the present application is to provide a humidification component and a respiratory ventilation device including the humidification component.

[0005] In order to achieve the above-mentioned objectives, the present application provides a humidification component on the one hand, which is configured to humidify pressurized respiratory gas from a respiratory ventilation device, wherein the humidification component includes a liquid chamber configured to accommodate one or more liquids, wherein the liquid chamber includes a box body, a box cover and a humidification component gas inlet, and the humidification component gas inlet is configured to introduce pressurized respiratory gas into the box body via a first gas channel, wherein the first gas channel includes an outlet.

[0006] In one embodiment, the liquid chamber of the humidification assembly further comprises a humidification assembly gas outlet configured to direct the humidified and pressurized breathing gas back into the body of the respiratory ventilation device via a second gas passageway, wherein the second gas passageway comprises an inlet.

[0007] In one embodiment, the liquid chamber of the humidifying assembly includes a shell, wherein the humidifying assembly gas inlet of the liquid chamber and / or the humidifying assembly gas outlet of the liquid chamber are arranged on a first side surface of the shell of the liquid chamber, and wherein the first gas channel is used to connect the first gas channel and the outlet of the box, and / or the inlet of the second gas channel for connecting the second gas channel and the box is arranged inside the shell of the liquid chamber. In one embodiment, the shell includes an inner shell and a cover shell of a layered structure. This layered structure can make the shell easy to disassemble and clean.

[0008] By forming the first and second gas channels in the housing of the liquid chamber, the tank may comprise a simple design with a wider opening and volume, which allows it to be held and filled more easily than if filled with water through one gas channel.

[0009] In one embodiment, the outlet of the first gas channel faces the second side surface of the shell of the liquid chamber, the inlet of the second gas channel faces the third side surface of the shell of the liquid chamber, and the second side surface of the shell of the liquid chamber is opposite to the third surface of the shell of the liquid chamber.

[0010] By separating the inlet and outlet, the airflow can travel a longer distance while being exposed to the liquid in the tank, thereby improving humidification efficiency.

[0011] In one embodiment, the liquid chamber comprises a guide plate disposed on an upper edge of the outlet of the first gas channel, the guide plate being configured to guide the pressurized breathing gas to flow downwardly to the tank.

[0012] In one embodiment, the first gas channel includes a first portion and a second portion, wherein the first portion of the first gas channel extends from the humidification assembly gas inlet of the liquid chamber to a first common plane, wherein the second portion of the first gas channel extends from the first common plane to the outlet of the first gas channel. The shape of the gas channel reduces the noise discharged through the gas channel in the liquid chamber.

[0013] In addition or alternatively, according to one embodiment, the second gas channel includes a first part and a second part, wherein the first part of the second gas channel extends from the entrance of the second gas channel to a second common plane, and wherein the second part of the second gas channel extends from the second common plane to the gas outlet of the humidification component of the liquid chamber.

[0014] By forming the first gas channel and the second gas channel to have a common plane, a compact design can be achieved.

[0015] Additionally or alternatively, the first gas channel and the second gas channel have a substantially rectangular cross section. Compared with a tubular cross section, such a rectangular cross section can save dead space and / or increase the area of ​​the cross section, thereby allowing a more compact design and / or lower resistance to the pressurized gas.

[0016] In one embodiment, the first gas channel and the second gas channel intersect each other; wherein the distance between the outlet and the gas inlet of the humidification component is greater than the distance between the outlet and the gas outlet of the humidification component.

[0017] Additionally or alternatively, a distance between the inlet and the humidification assembly gas outlet is greater than a distance between the inlet and the humidification assembly gas inlet.

[0018] By passing through the first gas channel and the second gas channel, the mechanical noise from the gas inlet of the humidification assembly of the main body of the respiratory ventilation device connected to the first gas channel and the bubbling noise in the box and propagated through the second gas channel are reduced by a compact design with reduced dead space. Liquid in the box is also less likely to reach the inlet and outlet.

[0019] In one embodiment, the first portion of the first gas channel is substantially parallel to the second portion of the second gas channel along a direction that is angled with the first side surface of the housing of the liquid chamber. Additionally or alternatively, according to one embodiment, the second portion of the first gas channel and the first portion of the second gas channel are arranged in different layers. Additionally or alternatively, according to one embodiment, a first projection of the second portion of the first gas channel on a horizontal plane and a second projection of the first portion of the second gas channel on the horizontal plane intersect or at least partially overlap.

[0020] In one embodiment, the second portion of the first gas channel is disposed below the first portion of the second gas channel, or the first portion of the second gas channel is disposed below the second portion of the first gas channel.

[0021] In one embodiment, an area of ​​a first cross-section of the first gas channel on a first common plane is equal to or less than half an area of ​​a gas inlet of a humidifying assembly of the liquid chamber, and / or a second cross-section of the second gas channel on a second common plane is equal to or less than half an area of ​​a gas outlet of the humidifying assembly of the liquid chamber.

[0022] In one embodiment, the liquid chamber further includes: a first inclined plate, which is arranged between the first cross-section and the gas inlet of the humidification component of the liquid chamber, and the first inclined plate is configured to allow the pressurized respiratory gas to flow smoothly in the first gas channel; and a second inclined plate, which is arranged between the second cross-section and the gas outlet of the humidification component of the liquid chamber, and the second inclined plate is configured to allow the humidified and pressurized respiratory gas to flow smoothly in the second gas channel.

[0023] In one embodiment, at least a portion of the bottom of the first gas channel is located below the lower edge of the gas inlet of the humidification component of the liquid chamber, and / or at least a portion of the bottom of the second gas channel is located below the lower edge of the gas outlet of the humidification component of the liquid chamber below.

[0024] The arrangement can prevent fluid (eg condensed water) from being discharged from the gas channel through the gas outlet and / or entering the gas outlet when the tank cover is closed, or reduce such risk.

[0025] In one embodiment, the housing is connected and / or connectable to the housing and / or the housing cover and is pivotally arranged relative to the housing. Since the first gas channel and / or the second gas channel are formed together with the housing, the structure of the housing can be formed in a very simple manner, thereby allowing better cleaning and liquid filling.

[0026] In one embodiment, the box cover is pivotally connected to the box body via a connecting mechanism; wherein at least a portion of the side of the first gas channel close to the connecting mechanism is covered by a side edge of the gas inlet of the humidifying component of the liquid chamber in the flow direction, and / or wherein at least a portion of the side of the second gas channel close to the connecting mechanism is covered by a side edge of the gas outlet of the humidifying component of the liquid chamber in the flow direction.

[0027] Once the box cover is opened by pivoting the box cover around the rotation axis defined by the connecting mechanism, the side of the first gas channel and / or the second gas channel close to the connecting mechanism will be transformed to a lower position than the other sides of the first gas channel and the second gas channel. By covering at least a portion of such side, the liquid in the first gas channel and / or the second gas channel is prevented from flowing or dripping out and damaging, for example, electronic components or dripping onto a surface on which, for example, a humidification component is placed.

[0028] In one embodiment, the box cover is pivotably connected to the box body via the connecting mechanism, and wherein the distance between the connecting mechanism and the gas outlet of the humidification assembly is smaller than the distance between the connecting mechanism and the gas inlet of the humidification assembly.

[0029] Due to the connection mechanism and the lever action, ports near the connection mechanism (e.g., a pivotable hinge connection) can have a tighter seal and / or a smaller gap error than ports far from the connection mechanism. By arranging the humidification assembly gas outlet near the connection mechanism, the seal of the humidified gas flowing through the humidification assembly gas outlet is improved, which in some cases may be more critical than the seal of the unhumidified gas entering the humidification assembly through the humidification assembly.

[0030] On the other hand, the present application provides a respiratory ventilation device, which is configured to deliver respiratory gas to a patient interface, and includes the above-mentioned humidification component, and also includes: a gas pressurization unit, which is configured to generate pressurized respiratory gas by pressurizing the respiratory gas, and the gas pressurization unit is located in the main body of the respiratory ventilation device, and the main body of the respiratory ventilation device includes a shell having a first side wall, which is configured to discharge the pressurized respiratory gas; a main gas inlet, which is used to introduce respiratory gas into the respiratory ventilation device, and the main gas inlet is arranged on the second side wall of the shell of the main body of the respiratory ventilation device; and a main gas outlet, which is configured to discharge the humidified and pressurized respiratory gas into the breathing tube.

[0031] In one embodiment, the primary gas outlet is configured to be disposed on a body of a respiratory ventilation device.

[0032] In one embodiment, the primary gas outlet is provided on the liquid chamber.

[0033] In one embodiment, a first side surface of the housing of the liquid chamber faces a first side wall of a casing of a body of the respiratory ventilation device.

[0034] In one embodiment, the liquid chamber comprises a housing and a housing cover, wherein the housing cover is pivotably connected to the housing via a connection mechanism having a rotation axis; wherein the housing comprises an opening for filling at least one of the one or more liquids, wherein the opening is opened by opening the housing cover and / or can be closed by closing the housing cover; and wherein the humidification assembly and the main body of the respiratory ventilation device are fluidically connected by closing the housing cover and / or are fluidically disconnected by opening the housing cover.

[0035] By using a pivotable tank cover to allow the body and humidification assembly to be fluidly connected to form a flow channel for pressurized gas and / or humidified and pressurized gas, the mechanical connection between the body and the tank (usually filled with water) can be isolated from the fluid seal, making the mechanical connection between the body and the tank easier to operate while ensuring that the fluid connection is airtight under pressure. In addition, the lever effect of the tank cover can be used to ensure that the fluid connection is close to the pressurized gas on the one hand and easy to operate with less force on the other hand.

[0036] In some embodiments, the liquid chamber can be directly mounted on the main body of the respiratory ventilation device, the liquid chamber and the main body of the respiratory ventilation device can be fluidically connected at least through a connection port, the connection port is used to form at least one flow channel between the main body of the respiratory ventilation device and the liquid chamber, and the liquid chamber can include a box cover that can be opened. In order to fill the liquid in the liquid chamber, the user only needs to open the box cover and fill the liquid in the box. When filling the liquid, the fluid connection between the liquid chamber and the main body can be disconnected. Therefore, the respiratory ventilation device has a simplified structure and is easy to use.

[0037] In some embodiments, the main body of the respiratory ventilation device may include a blower of the gas pressurizing unit and / or a heating component configured to heat the liquid in the liquid chamber. The heating component may be mounted on a side surface of the main body. The heating component and the main body may be constructed as an integral piece, or the heating component may be detachable from the main body.

[0038] In some embodiments, when the box cover is closed, the box body and the box cover can be locked. In some embodiments, the liquid chamber and the heating component can be locked. In some embodiments, the box cover may not be locked to the main body, and the box cover is fixed to the main body by the locking between the box body and the box cover and the locking between the box body and the main body. When the heating component is installed in the liquid chamber, the box cover can be opened by unlocking the box cover from the box body. Therefore, it is possible to facilitate the opening and closing of the box cover, as well as the fluid connection and disconnection between the box cover and the main body. It should be noted that any other locking mode between the box body and the box cover can achieve the above functions without unlocking the liquid chamber from the main body.

[0039] In some embodiments, the case and the body are attachable to each other by moving the case relative to the body in an attachment direction, with the angle between the rotation axis and the attachment direction being between 20°-160°, or in some embodiments, the angle being between 45°-135°, or in some other embodiments, the angle being between 60°-120°; and / or wherein the case and the body are unlocked from each other by moving the case relative to the body in an unlocking direction, with the angle between the rotation axis and the unlocking direction being between 20°-160°, or in some embodiments, the angle being between 45°-135°, or in some other embodiments, the angle being between 60°-120°.

[0040] By arranging the rotation axis relative to the attachment direction in the described manner, closing the lid can be in a direction perpendicular to the rotation axis and can have a component in the attachment direction. Therefore, closing the lid towards the box body can also connect the box body to the main body. This improves the comfort of the user.

[0041] In some embodiments, the angle between the attachment direction and the unlocking direction is between -45° and 45°, in some other embodiments, the angle is between -30° and 30°, and in some other embodiments, the angle is between -15° and 15°. In one embodiment, the attachment direction and the unlocking direction may be substantially in the same direction. This may further be combined with the axis of rotation to allow the lid to be opened only in a direction substantially opposite to the unlocking direction, to avoid the user accidentally unlocking the case by opening the lid. This improves the comfort of the user.

[0042] In some embodiments, the humidification component and the main body of the respiratory ventilation device can be fluidly connected through at least one connecting port to form at least one flow channel between the main body of the respiratory ventilation device and the liquid chamber; wherein the at least one connecting port includes a gas inlet and a gas outlet; wherein the connecting port includes an axial seal, which is used to fluid-tightly connect the gas inlet and the gas outlet; wherein the inner surface of the axial sealing member at least partially forms the flow channel, and wherein the axial sealing member defines a sealing plane.

[0043] By using an axial sealing member, the sealing member creates less friction during connection and disconnection than, for example, a tapered connector that creates a radial seal, thereby improving user comfort and operating safety.

[0044] In some embodiments, the angle between the sealing plane and the liquid level in the liquid chamber is between -75° and 75°, in some other embodiments, the angle is between -30° and 30°, and in some other embodiments, the angle is between 15°-65°; and / or wherein the angle between the sealing plane and the attachment direction is between 15°-165°, in some other embodiments, the angle is between 30° and 150°, and in some other embodiments, the angle is between 45° and 135°, and in still other embodiments, the angle is between 70° and 110°; and / or wherein the angle between the liquid level and the unlocking direction is between 15°-165°, in some other embodiments, the angle is between 30° and 150°, and in some other embodiments, the angle is between 45° and 135°, and in still other embodiments, the angle is between 70° and 110°.

[0045] By arranging the sealing plane in the described manner relative to the liquid level (e.g., a horizontal plane), and / or by arranging the attachment direction in the described manner relative to the liquid level, the risk of liquid spilling during sealing, unlocking, and / or attaching is reduced. The liquid level is the designed level of liquid during normal use of the respiratory ventilation device and the humidification assembly.

[0046] In some embodiments, the inner surface of the axial sealing member at least partially forms the flow channel and / or the overlapping portion of the gas inlet and the gas outlet in a sealed state is less than 5 mm, so that the gas inlet can be disconnected from the gas outlet without contacting the gas inlet and the gas outlet; wherein the axial seal includes one or more elastic materials with a Shore hardness of less than 70 (for example, 20-70, 60, etc.) according to ASTM D2240 Typ A, wherein, in the sealed state, the axial seal is compressed axially by 10%-50% and / or 0.5-6mm (for example, 1-3mm) compared to a state in which the main body and the humidification component are unlocked.

[0047] In some embodiments, the gas inlet comprises an inlet hole and the gas outlet comprises an outlet hole, wherein the inlet hole and the outlet hole are formed of one or more materials having a higher hardness than the elastomeric material forming the axial sealing member.

[0048] In some embodiments, the axial sealing member is formed around the inlet aperture and / or around the outlet aperture.

[0049] In some embodiments, the inlet hole and the outlet hole are formed by a material having a higher hardness than the elastic material forming the axial sealing member, and the inlet hole and the outlet hole are spaced apart in the axial direction of the axial seal by the axial sealing member. In some embodiments, the inlet hole and the outlet hole are spaced apart by the axial sealing member in the axial direction of the axial sealing member in the sealed and attached state of the humidification component by at least 1 mm, and in some embodiments, at least 5 mm. By spacing the inlet hole and the outlet hole in the axial direction, not only the friction between the gas inlet and outlet is minimized, but also the collision between the materials forming the inlet hole and the outlet hole with higher hardness is minimized, thereby reducing sudden noise during the assembly and / or disassembly of the respiratory ventilation device. Shortly before the inlet and outlet holes are connected, the relative movement between the humidification component and the main body of the respiratory ventilation device is also buffered by the axial sealing member, which further increases the comfort of the user.

[0050] In some embodiments, the axial sealing member includes a plurality of components constructed of one or more elastomeric materials and configured such that only dynamic friction forces exist between the components during coupling or decoupling of the humidification assembly.

[0051] In some embodiments, the axial sealing member includes a sealing lip protruding from at least one of the inlet hole and the outlet hole, wherein the sealing lip is inclined toward the center of the flow channel and is configured to bend toward the center of the flow channel if pressurized and / or compressed by connecting the gas inlet and the gas outlet.

[0052] In some embodiments, the liquid chamber may include: a case body; and a case cover, the case cover being pivotally connected to the case body by a connection mechanism; wherein the case cover may be configured to be closed by pushing in the pushing direction and / or configured to be opened by pulling in a direction substantially opposite to the pushing direction. Since the case cover can be closed in the same direction, a single push action can close the case cover and simultaneously connect the liquid chamber to the main body, thereby increasing comfort. When the case cover is opened in opposite directions, the chance of a user confusing opening the case cover with removing the liquid chamber from the main body is minimized, thereby avoiding a situation where a user accidentally opens the case cover and pours out the liquid when only intending to disconnect the humidifying assembly.

[0053] In some embodiments, a method for operating a respiratory ventilation device may include: connecting the humidification component to the main body of the respiratory ventilation device by pushing the liquid chamber along a pushing direction; and unlocking the humidification component from the main body by pushing the liquid chamber substantially along the pushing direction.

[0054] In some embodiments, the liquid chamber may include: a box body; and a box cover, which is pivotally connected to the box body via a connecting mechanism; the method may also include: before the connecting step, placing the humidification component on the surface of the respiratory ventilation device; the step of connecting the humidification component may also include locking the box cover with the box body by pushing the box cover basically along the pushing direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The present application is further described according to exemplary embodiments. These exemplary embodiments are described in detail with reference to the accompanying drawings. The drawings are not drawn to scale. These embodiments are non-limiting exemplary embodiments, in which the same reference numerals represent similar structures in several views of the drawings, and in which:

[0056] Figure 1 shows an exemplary respiratory ventilation device according to some embodiments of the present disclosure;

[0057] Figure 2A and Figure 2B shows an exploded view of an exemplary liquid chamber according to some embodiments of the present disclosure;

[0058] FIG. 3A to FIG. 3Dshows an exemplary connection between a liquid chamber and a body of a respiratory ventilation device according to some embodiments of the present disclosure;

[0059] Figure 4 shows another exemplary connection between a liquid chamber and a body of a respiratory ventilation device according to some embodiments of the present disclosure;

[0060] Figures 5A-5C shows an exemplary connection between a liquid chamber and a body of a respiratory ventilation device according to some embodiments of the present disclosure;

[0061] Figure 6 An exemplary connection between a connector and a connecting plate of a case cover when the case cover is closed according to some embodiments of the present disclosure is shown;

[0062] Figure 7 shows an exemplary liquid chamber of a respiratory ventilation device according to some embodiments of the present disclosure;

[0063] Fig. 8A and Figure 8B shows an exemplary case cover according to some embodiments of the present disclosure;

[0064] Fig. 9 shows an exemplary cover shell according to some embodiments of the present disclosure;

[0065] Fig. 10A and Fig. 10B shows an exemplary inner shell of a case cover according to some embodiments of the present disclosure;

[0066] Fig.11 An exemplary bottom plate of an inner shell of a case cover according to some embodiments of the present disclosure is shown;

[0067] Fig. 12A and Fig. 12B An exemplary internal structure of an inner shell of a case cover according to some embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0068] These and other features of the present application, as well as the operation and function of the relevant elements of the structure and the combination and manufacturing economy of the parts may become more apparent in view of the following description. Reference is made to the accompanying drawings, all of which form a part of this application. However, it should be clearly understood that the drawings are for illustration and description only and are not intended to limit the scope of the present application. It should be understood that the drawings are not drawn to scale.

[0069] It should be understood that when a unit, engine, or module is referred to as being "connected," "connected to," or "coupled to" another unit, engine, or module, it may be directly connected, unless the context clearly indicates otherwise, there may be intermediate units, engines, or modules connected or coupled to or in communication with another unit, engine, or module. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0070] In the present application, the breathing gas may include natural air (or atmospheric air), purified air, oxygen, oxygen-enriched atmosphere, therapeutic drugs, pressurized air, humidified air, etc., or a combination thereof. In some embodiments, the respiratory ventilation device may be a non-invasive ventilator. The respiratory ventilation device may be configured to detect, diagnose, treat, prevent and / or improve a subject's respiratory-related condition.

[0071] In some embodiments, the respiratory ventilation device can deliver pressurized breathing gas to a subject (e.g., a nose and / or mouth of a subject). In some embodiments, the respiratory ventilation device may include a gas inlet and a gas outlet. The gas inlet may be configured to introduce breathing gas into the respiratory ventilation device. In some embodiments, the respiratory ventilation device can pressurize the breathing gas introduced through the gas inlet. In some embodiments, the gas outlet may be connected to a breathing tube. The gas outlet may be configured to discharge the pressurized breathing gas. In some embodiments, the breathing tube may be connected to a subject interface. Therefore, the pressurized breathing gas generated by the respiratory ventilation device can be discharged to the subject via the breathing tube and the subject interface.

[0072] In some embodiments, the subject can be a healthy person. In some embodiments, the subject can be a patient. In some embodiments, the subject interface can be configured to connect the respiratory ventilation device to the subject, for example, by providing a flow of breathing gas (e.g., air). In some embodiments, the subject interface can include a gas channel for guiding breathing gas. The subject connection device can include a mask, a tube, etc.

[0073] The respiratory ventilation device may include a pressurized air (CPAP) unit, a humidification component, a gas filtration component, a noise reduction component, a detection module, a control module, and one or more peripheral devices.

[0074] The humidification assembly can be configured to humidify (pressurized) breathing gas. In some embodiments, the humidification assembly may include a liquid chamber and / or a heating device. The liquid chamber may be configured to hold one or more liquids (e.g., water). The heating device may be configured to heat one or more liquids contained in the liquid chamber and / or generate water vapor with a temperature range of, for example, 30-50 degrees Celsius. In some embodiments, the liquid chamber may include a box and / or a box cover. The box may be configured to hold one or more liquids. The box cover may be configured to introduce (pressurized) breathing gas into the surface of one or more liquids, and / or introduce humidified (pressurized) breathing gas into the liquid chamber. In some embodiments, the box cover may include a housing, a gas inlet and a gas outlet, the gas inlet being configured to introduce (pressurized) breathing gas into the liquid chamber via a first gas channel, and / or the gas outlet being configured to introduce humidified (pressurized) breathing gas back into the respiratory ventilation device via a second gas channel.

[0075] Figure 1 An exemplary respiratory ventilation device according to some embodiments of the present disclosure is shown. The respiratory ventilation device 1700 may include a body 1702, and / or a humidification assembly. In some embodiments, the heating assembly may be configured to humidify the pressurized respiratory gas to produce pressurized and humidified respiratory gas. In some embodiments, the humidification assembly may include a liquid chamber 1704, a heating plate 1710, and a heat conductive plate 1810 (see Figure 2A and 2B ). Liquid chamber 1704 can be configured to contain one or more liquids (e.g., water and / or medication). The thermally conductive plate can be configured to conduct heat from heating plate 1710 to heat the one or more liquids and generate steam to humidify the pressurized respiratory gas. In some embodiments, the thermally conductive plate can be disposed at the bottom of liquid chamber 1704. In some embodiments, the thermally conductive plate can include a metal thermally conductive material.

[0076] In some embodiments, the body 1702 may include a gas pressurization unit ( Figure 11704), gas inlet 1706, gas outlet 1708, and / or support plate 1707. In some embodiments, gas inlet 1706 and / or gas outlet 1708 may be disposed at a first interface between body 1702 and liquid chamber 1704. In some embodiments, support plate 1707 may be disposed at a second interface between body 1702 and liquid chamber 1704. In some embodiments, support plate 1707 may be fixed to a substrate of body 1702. In some embodiments, the first interface between body 1702 and liquid chamber 1704 may refer to a side surface of body 1702 and a corresponding side surface of liquid chamber 1704. In some embodiments, the second interface between body 1702 and liquid chamber 1704 may refer to a bottom surface of liquid chamber 1704 and a corresponding surface of support plate 1707 of body 1702. In some embodiments, gas outlet 1708 may be configured to discharge pressurized breathing gas from body 1702 to liquid chamber 1704. In some embodiments, gas inlet 1706 can be configured to direct pressurized and humidified breathing gas from liquid chamber 1704 back into body 1702. In some embodiments, support plate 1707 can include first hole 1709 and / or second hole 1711. In some embodiments, first hole 1709 and / or second hole 1711 can be disposed on the second interface. In some embodiments, at least a portion of heating plate 1710 can be disposed in second hole 1711.

[0077] In some embodiments, liquid chamber 1704 can be removably coupled to body 1702 such that the humidification assembly can be removably coupled to body 1702 .

[0078] Figure 2A and 2B An exploded view of an exemplary liquid chamber according to some embodiments of the present disclosure is shown. In some embodiments, as Figure 2A and 2B As shown, the liquid chamber 1704 may include a box cover and a box body. In some embodiments, the box cover may include a cover shell 1802 and one or more gas channels 1805. In some embodiments, the box body may include a box shell 1808, a heat conducting plate sealing gasket 1809 and a heat conducting plate 1810. It should be noted that in some embodiments, the gas channel 1805 may be arranged in the box. In some embodiments, the liquid chamber 1704 may include a fixed gasket 1806 and / or a box cover sealing gasket 1807 located between the box body and the box cover. The fixed gasket 1806 and / or the box cover sealing gasket 1807 may be configured to achieve a sealed connection between the box body and the box cover. In some embodiments, the liquid chamber 1704 may include a connecting plate 1803 and / or a gas channel sealing gasket 1804 to cooperate with the main body 1702.

[0079] In some embodiments, the components of the liquid chamber 1704 can be detachably connected. For example, the connecting plate 1803 can be arranged on and / or fixed to the cover shell 1802 by bonding, riveting, tenoning, clamping, meshing, etc. or any combination thereof. As another example, the gas channel sealing gasket 1804 can be connected and / or fixed to the gas channel 1805. As another example, the fixed gasket 1806 and / or the box cover sealing gasket 1807 can be arranged on and / or fixed to the box shell 1808 to improve the airtightness between the cover shell 1802 and the box shell 1808. In some embodiments, the fixed gasket 1806 can be arranged in the box cover sealing gasket 1807. As another example, the heat conducting plate sealing gasket 1809 can be arranged between the bottom frame of the heat conducting plate 1810 and the box shell 1808. As another example, the heat conducting plate 1810 can be connected to the heat conducting plate sealing gasket 1809 by bonding, riveting, tenoning, clamping, meshing, etc. or any combination thereof. As yet another example, the heat conductive plate sealing gasket 1809 may be secured to the bottom frame of the tank shell 1808 by bonding, riveting, mortising, clamping, meshing, or the like, or any combination thereof.

[0080] Figures 3A-3D An exemplary connection between a liquid chamber and a main body of a respiratory ventilation device according to some embodiments of the present disclosure is shown. The connector 2301 can be configured to provide a sealed connection between the box cover 2302 and the main body of the respiratory ventilation device, thereby ensuring the airtightness of the pressurized respiratory gas flowing between the liquid chamber 2303 and the main body of the respiratory ventilation device. In some embodiments, the connector 2301 can be fixed to the main body of the respiratory ventilation device. In some embodiments, the connector 2301 can be detachably connected to the main body of the respiratory ventilation device. In some embodiments, the housing of the main body of the respiratory ventilation device may include a space for accommodating the connector 2301. In some embodiments, the connector 2301 and the main body can be an integral piece. In some embodiments, if the liquid chamber 2303 is fixed to the support plate of the main body of the respiratory ventilation device, and the box cover 2302 is closed with the box body of the liquid chamber 2303, the connector 2301 can provide a sealed connection between the box cover 2302 and the main body of the respiratory ventilation device. In some embodiments, the connector 2301 can be fixed or mounted on the box cover 2302. In some embodiments, the connector 2301 may be detachably connected to the box cover 2302. In some embodiments, the box cover 2302 may include a space for installing the connector 2301. In some embodiments, the connector 2301 and the box cover 2302 may be an integral part.

[0081] like Figure 3BAs shown, the connector 2301 may include a support frame 2304 and / or a gasket 2305. The support frame 2304 may be configured to support the gasket 2305 and / or facilitate the fixation of the gasket 2305 to the body of the respiratory ventilation device. In some embodiments, the gasket 2305 may include an inclined surface. In some embodiments, there may be an inclination angle between the inclined surface of the connector 2301 (or the gasket 2305) and the horizontal plane. In some embodiments, the inclination angle may be substantially within 0 degrees to 90 degrees (e.g., within 30 to 60 degrees). The gasket 2305 may be configured to form a sealed connection between the box cover 2302 and the body of the respiratory ventilation device. In some embodiments, the gasket 2305 may include a first hole 2306 and / or a second hole 2307 disposed on the inclined surface. In some embodiments, the support frame 2304 may include at least one gas flow channel connected to the first hole 2306 and / or the second hole 2307. Each of the at least one gas flow channel can be connected to one or more gas channels of the main body of the respiratory ventilation device. In some embodiments, the edge of the first hole 2306 can form a first protruding structure 2311. In some embodiments, the edge of the second hole 2307 may include a second protruding structure 2312. The first protruding structure 2311 and / or the second protruding structure 2312 can protrude to the box cover 2302. The first protruding structure 2311 and / or the second protruding structure 2312 can facilitate the sealed connection between the connector 2301 and the box cover 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, etc., 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 glue, etc., or any combination thereof). In some embodiments, the first protruding structure 2311 and / or the second protruding structure 2312 may be made of the same material as the gasket 2305. In some embodiments, the first protruding structure 2311 and / or the second protruding structure 2312 may be made of a material different from the material of the gasket 2305. In some embodiments, the thickness of the first protruding structure 2311 and / or the second protruding structure 2312 may be less than the thickness of the gasket 2305.

[0082] In some embodiments, the gasket 2305 can be fixed to the main body of the respiratory ventilation device (e.g., the support frame 2304 of the connector 2301). In some embodiments, the gasket 2305 can be removably connected to the main body of the respiratory ventilation device (e.g., the support frame 2304 of the connector 2301) by, for example, gluing, bonding, bolting, etc. or a combination thereof. In some embodiments, the gasket 2305 can be made of an elastic material, including, for example, an elastomer, a rubber (e.g., silicone), etc. or a combination thereof. In some embodiments, the gasket 2305 can include a protruding edge located at the interface of the support frame 2304 and the gasket 2305. The protruding edge of the gasket 2305 can facilitate a sealed connection between the connector 2301 and the main body of the respiratory ventilation device.

[0083] As shown, the inclined surface of the gasket 2305 can face the corresponding inclined surface of the connecting plate 2308 of the box cover 2302. The box cover 2302 can include a gas inlet 2309 and a gas outlet 2310. The first hole 2306 located on the inclined surface of the gasket 2305 can correspond to the gas inlet 2309 of the box cover 2302, and the second hole 2307 located on the inclined surface of the gasket 2305 can correspond to the gas outlet 2310 of the box cover 2302. In some embodiments, if the liquid chamber 2303 is fixed to the support plate of the main body of the respiratory ventilation device, and the box cover 2302 is closed with the box body of the liquid chamber 2303, the box cover 2302 can be sealed and connected to the main body of the respiratory ventilation device through the gasket 2305. The first hole 2306 of the gasket 2305 and the gas inlet 2309 of the box cover 2302 can introduce pressurized breathing gas from the main body of the respiratory ventilation device into the liquid chamber 2303. The second hole 2307 of the gasket 2305 and the gas outlet 2310 of the tank cover 2302 can direct the humidified and pressurized breathing gas from the liquid chamber 2303 back into the body of the respiratory ventilation device.

[0084] like Figure 3D As shown, if the box cover 2302 is closed, the first protruding structure 2311 can be squeezed and deformed, and then can form a closed line contact (e.g., around the edge of the gas inlet 2309 and / or the gas outlet 2310) with the connecting plate 2308 of the box cover 2302. Therefore, the airtightness of the breathing gas flowing between the main body of the respiratory ventilation device and the liquid chamber 2303 can be ensured.

[0085] Figure 4 Another exemplary connection between a liquid chamber and a body of a respiratory ventilation device according to some embodiments of the present disclosure is shown. Figure 4As shown, the liquid chamber 2403 may include a box body 2401 and a box cover 2402. The connector 2301 may be configured to provide a sealed connection between a portion of the box body 2401 and the main body of the respiratory ventilation device. In some embodiments, the connector 2301 may not directly contact the box cover 2402. Therefore, the state of the box cover 2402 (open or closed) may not affect the connection between the connector 2301 and the box body 2401. In some embodiments, the box cover 2402 can be opened by a handle 2404. The handle 2404 may have one or more notches, and the notches may make the handle 2404 easier to operate. In some embodiments, the box cover 2402 may be a sliding cover. In some embodiments, the box cover 2402 may slide in a horizontal direction or slide in a direction that is inclined at an angle (e.g., 10 degrees, 20 degrees, 30 degrees, etc.) relative to the horizontal direction. In some embodiments, in order to ensure a sealed connection between the box body 2401 and the box cover 2402, the interface 2405 between the box body 2401 and the box cover 2402 may be provided with a sealing material (or elastic material) including, for example, silicone resin.

[0086] Figures 5A-5C An exemplary connection between a body and a liquid chamber of a respiratory ventilation device according to some embodiments of the present disclosure is shown. The connector 2601 can be configured to provide a sealed connection between a box cover 2603 and a body 2602 of the respiratory ventilation device. In some embodiments, the connector 2601 can include a first threaded hose 2601a and / or a second threaded hose 2601b. The hollow hole of the first threaded hose 2601a can form a gas outlet of the body 2602. The hollow hole of the second threaded hose 2601b can form a gas inlet of the body 2602. In some embodiments, the first threaded hose 2601a and / or the second threaded hose 2601b can be made of an elastic material, and the elastic material includes, for example, an elastomer, a rubber (e.g., silicone), etc. or a combination thereof.

[0087] In some embodiments, the box cover 2603 of the liquid chamber may include a connecting plate 2606, which is equipped with a gas inlet 2604 and / or a gas outlet 2605 of the box cover 2603. The gas outlet of the body 2602 may correspond to the gas inlet 2604 of the box cover 2603. The gas inlet of the body 2602 may correspond to the gas outlet 2605 of the box cover 2603. In some embodiments, as Figure 5A As shown, the hollow holes of the first threaded hose 2601a and the second threaded hose 2601b of the connector 2601 can be substantially vertically arranged at the first interface between the main body 2602 of the respiratory ventilation device and the liquid chamber. Correspondingly, the connecting plate 2606 can be substantially horizontally arranged on the box cover 2603. Therefore, if the box cover 2603 is closed, a sealed connection can be formed between the main body 2602 of the respiratory ventilation device and the liquid chamber through the connector 2601.

[0088] Figure 6 FIG. 2 shows an exemplary connection between the connector 2601 and the connecting plate 2606 of the box cover 2603 when the box cover 2603 is closed according to some embodiments of the present disclosure. Figure 6 As shown, if the box cover 2603 is closed, the connector 2601 can be connected to the connecting plate 2606 of the box cover 2603 and can form a closed line contact with the connecting plate 2606, which can ensure the airtightness of the pressurized breathing gas flowing between the liquid chamber and the main body of the respiratory ventilation device.

[0089] Figure 7 FIG. 2 shows an exemplary liquid chamber of a respiratory ventilation device according to some embodiments of the present disclosure. Figure 7 As shown, the liquid chamber 3000 may include a housing 3002 and a housing cover 3004. In some embodiments, the housing cover 3004 may be pivotally connected to the housing 3002 via a connection mechanism. In some embodiments, the liquid chamber 3000 may be opened from the front surface of the respiratory ventilation device.

[0090] The case 3002 may be configured to hold one or more liquids (e.g., water and / or medicine). In some embodiments, the case 3002 may include an opening for filling at least one of the one or more liquids. In some embodiments, the opening can be opened by opening the case cover 3004 and / or closed by closing the case cover 3004. In some embodiments, the main body of the humidification assembly and the respiratory ventilation device can be fluidly connected by closing the case cover 3004 and / or disconnected from the fluid connection by opening the case cover 3004. In some embodiments, the case 3002 and the main body can be connected to each other by moving the case 3002 relative to the main body along the attachment direction, and the angle between the rotation axis and the attachment direction is between 20°-160°. In some embodiments, the case 3002 and the main body can be unlocked from each other by moving the case 3002 relative to the main body along the unlocking direction, and the angle between the rotation axis and the unlocking direction is between 20°-160°. In some embodiments, the angle between the attachment direction and the unlocking direction may be between -45° and 45°.

[0091] In some embodiments, the humidification assembly and the main body of the respiratory ventilation device can be fluidly connected by at least one connection port for forming at least one flow channel between the main body of the respiratory ventilation device and the liquid chamber 3000. In some embodiments, the at least one connection port (e.g., connector 2301) can include a gas inlet (e.g., second hole 2307) and a gas outlet (e.g., first hole 2306). In some embodiments, the connection port (e.g., connector 2301) can include an axial seal (e.g., first protruding structure 2311 and / or second protruding structure 2312) for fluid-tightly connecting the gas inlet 3102 and the gas outlet 3104. In some embodiments, the inner surface of the axial seal can at least partially form the flow channel. In some embodiments, the axial seal 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° to 30°). In some embodiments, the angle between the sealing plane and the attachment direction can be between 15°-65°. In some embodiments, the angle between the liquid level and the attachment direction and / or the unlocking direction may be between 45° and 135°.

[0092] The shape of the case 3002 may include a cube, a cuboid or an irregular shape that can be matched with the main body of the respiratory ventilation device. The case 3002 may be transparent, opaque or translucent. In some embodiments, the case 3002 may include one or more marks for indicating the liquid level (e.g., water level) of one or more liquids in the case 3002. For example, the case 3002 may include a first adhesive mark indicating the minimum liquid level allowed on the side surface of the case 3002 and / or a second adhesive mark indicating the maximum liquid level allowed on the side surface of the case 3002. As another example, the case 3002 may include a floating object (e.g., a colored float) floating on one or more liquids in the case 3002. In some embodiments, the case 3002 may be equipped with a sensor for detecting the liquid level of one or more liquids.

[0093] In some embodiments, the shape of the box cover 3004 can be similar to or different from the shape of the box body 3002. The shape of the box cover 3004 can include a cube, a cuboid, or an irregular shape that can match the main body of the respiratory ventilation device. The material of the box cover 3004 can be similar to or different from the material of the box body 3002. The box cover 3004 can be transparent, opaque, or translucent.

[0094] In some embodiments, the case lid 3004 may include a handle 3006, one or more buckles (e.g., a first buckle 3008a and / or a second buckle 3008b) located on the rear side of the handle 3006. The handle 3006 may be configured to facilitate the opening and / or closing of the case lid 3004. The case body 3002 may include one or more notches (e.g., a first notch 3010a or a second notch 3010b) located at a position opposite to the handle 3006 (particularly corresponding to the position of the one or more buckles of the handle). If the case lid 3004 is closed, the case lid 3004 may be fastened to the case body 3002 by the cooperation of the one or more buckles and the one or more notches. In some embodiments, the first notch 3010a and / or the second notch 3010b may be equipped with a transverse rod. In some embodiments, the first buckle 3008a and / or the second buckle 3008b can be fastened by the transverse rod so that the case cover 3004 can be fastened to the case body 3002.

[0095] In some embodiments, the box cover 3004 can be rotatably connected to the box body 3002 via a connection mechanism 3009. In some embodiments, the box cover 3004 can be pivotally connected to the box body 3002 by providing a connection mechanism 3009 having a rotation axis.

[0096] Fig. 8A and 8B An exemplary case cover according to some embodiments of the present disclosure is shown. In some embodiments, as Fig. 8A and 8B As shown, the box cover 3700 may include a cover shell 3710, a connecting plate 3720, an inner shell 3730, a gas channel sealing frame 3740, a bottom plate 3750, a fixing frame 3760 and a box cover sealing frame 3770. In some embodiments, the connecting plate 3720 may include a first hole 3721 and a second hole 3722. In some embodiments, the first hole 3721 may be a gas inlet of the box cover 3700 (also referred to as a humidification component gas inlet). In some embodiments, the second hole 3722 may be a gas outlet of the box cover 3700 (also referred to as a humidification component gas outlet). In some embodiments, the connecting plate 3720 may be arranged obliquely on the outside of the cover shell 3710.

[0097] Fig. 9 An exemplary cover shell according to some embodiments of the present disclosure is shown. In some embodiments, as Fig. 9As shown, the cover shell 3710 may include a first hole 3711, a second hole 3712, a connection frame 3713, a baffle 3714, one or more first buckles 3715, and one or more second buckles 3716. The first hole 3711 and the first hole 3721 of the connection plate 3720 may be used as a gas inlet of the box cover 3700. The second hole 3712 and the second hole 3722 of the connection plate 3720 may be used as a gas outlet of the box cover 3700. The connection plate 3720 may be connected (e.g., fixed) to the connection frame 3713. In some embodiments, the connection plate 3720 may be connected to the connection frame 3713 by bonding, riveting, mortise and tenon, clamping, meshing, etc. or any combination thereof. The baffle 3714 may be used to separate the gas inlet and the gas outlet of the case cover 3700 between the cover shell 3710 and the connecting plate 3720 , so that the breathing gas flowing into the case cover 3700 may be isolated from the breathing gas flowing out of the case cover 3700 .

[0098] In some embodiments, a sealing strip (not shown) may be used to improve the airtightness of the connection between the connection frame 3713 and the connection plate 3720. For example, all joints between the connection frame 3713 and the connection plate 3720 may be equipped with a sealing strip. In some embodiments, a sealing strip (not shown) may be provided at the joint between the baffle 3714 and the connection plate 3720. In some embodiments, as Fig. 8A As shown, a first groove 37215 and / or a second groove 37225 may be provided between the cover shell 3710 and the connecting plate 3720. The first groove 37215 and / or the second groove 37225 may be used to contain a portion of the liquid leaking from the case and prevent the liquid from entering the main body of the respiratory ventilation device.

[0099] In some embodiments, the cover shell 3710 can be connected and / or can be connected to the case and / or the case cover 3700. In some embodiments, the cover shell 3710 can be pivotally arranged relative to the case. In some embodiments, the liquid contact side wall of the liquid chamber can be formed at least in part by the outer side wall of the case that forms the outer surface of the humidification assembly. In some embodiments, the case can be formed with only one opening for filling liquid and / or for replacing pressurized breathing gas. In some embodiments, the case cover 3700 can be pivotally connected to the case by a connecting mechanism. In some embodiments, at least a portion of the side of the first gas channel close to the connecting mechanism can be covered by the side edge of the humidification assembly gas inlet of the liquid chamber along the flow direction. In some embodiments, at least a portion of the side of the second gas channel close to the connecting mechanism can be covered by the side edge of the humidification assembly gas outlet of the liquid chamber along the flow direction. In some embodiments, the distance between the connecting mechanism and the humidification assembly gas outlet can be less than the distance between the connecting mechanism and the humidification assembly gas inlet.

[0100] Fig. 10A and 10B An exemplary inner shell of a case cover according to some embodiments of the present disclosure is shown. In some embodiments, as Fig. 10A and 10B As shown, the inner shell 3730 may include a gas inlet 3731 and / or a gas outlet 3732. In some embodiments, the gas inlet 3731 may be used to pass a first gas channel (e.g., Fig. 10A The gas passage indicated by the arrows in the figure introduces gas (e.g., pressurized breathing gas) into the liquid chamber. Fig. 10AAs shown, the first gas channel (also referred to as the gas inlet channel) may include an outlet 3733. In some embodiments, the outlet 3733 of the first gas channel may be used to connect the first gas channel to the box. Gas may flow out of the first gas channel through the outlet 3733 and enter the liquid chamber. In some embodiments, the inner shell 3730 may include a guide plate 3734. In some embodiments, the guide plate 3734 may be disposed on the edge of the outlet 3733 of the first gas channel. In some embodiments, the guide plate 3734 may be disposed on the upper edge and / or side edge of the outlet 3733 of the first gas channel (e.g., the side edge of the gas inlet 3731 and / or the gas outlet 3732 closer to the inner shell 3730). In some embodiments, the guide plate 3734 may be used to guide the gas to flow downward to the box below the box cover 3700. Therefore, the guide plate 3734 can reduce the amount of gas flowing into other spaces (e.g., the space between the cover shell 3710 and the inner shell 3730). In some embodiments, the gas channel sealing frame 3740 can be connected to the inner shell 3730 to ensure airtightness between the inner shell 3730 and the housing 3710. In some embodiments, the gas channel sealing frame 3740 can be fixed to the inner shell 3730 by bonding, riveting, mortising, clamping, meshing, etc. or any combination thereof.

[0101] In some embodiments, the gas inlet 3731 (also referred to as the humidification assembly gas inlet) and the outlet 3733 of the first gas channel can be disposed on different side surfaces of the inner shell 3730. Fig. 10A As shown, the gas inlet 3731 can be disposed on the right side portion of the first side surface of the inner shell 3730, and the outlet 3733 of the first gas channel can be disposed on the left side portion of the second side surface of the inner shell 3730, wherein the second side surface of the inner shell 3730 can be adjacent to the first side surface of the inner shell 3730 in a clockwise direction. The gas inlet 3731 and the outlet 3733 of the first gas channel can be as shown in FIG. Fig. 10A The arrangement shown makes it difficult for liquid (e.g., water) in the case to enter the main body of the respiratory ventilation device no matter how the respiratory ventilation device is placed or moved. In some embodiments, the distance between the outlet 3733 of the first gas channel and the gas inlet of the humidification component can be greater than the distance between the outlet 3733 of the first gas channel and the gas outlet of the humidification component. In some embodiments, the first side surface of the cover shell 3710 of the liquid chamber can face the first side wall of the shell of the main body of the respiratory ventilation device.

[0102] In some embodiments, the gas outlet 3732 (also referred to as the humidification component gas outlet) can be used to humidify the gas via a second gas channel (e.g., Fig. 10BThe gas passage (indicated by the arrow in the figure) directs the gas (e.g., humidified and pressurized breathing gas) back to the main body of the respiratory ventilation device. Fig. 10B As shown, the second gas channel (also referred to as the gas outlet channel) may include an inlet 3735. In some embodiments, the inlet 3735 of the second gas channel may be used to connect the second gas channel to the housing. Gas may flow from the liquid chamber into the second gas channel through the inlet 3735. In some embodiments, the first gas channel and / or the second gas channel may have a substantially rectangular cross-section. In some embodiments, the first gas channel and the second gas channel may intersect each other.

[0103] In some embodiments, the gas outlet 3732 (also referred to as the humidification assembly gas outlet) and the inlet 3735 of the second gas channel may be disposed on different side surfaces of the inner shell 3730. Fig. 10B As shown, the gas outlet 3732 can be disposed on the left portion of the first side surface of the inner shell 3730, and the inlet 3735 of the second gas channel can be disposed on the right portion of the third side surface of the inner shell 3730, wherein the third side surface of the inner shell 3730 can be adjacent to the first side surface of the inner shell 3730 in a counterclockwise direction. The gas outlet 3732 and the inlet 3735 of the second gas channel can be as shown in FIG. Fig. 10B The arrangement shown makes it difficult for liquid (e.g., water) in the box to enter the main body of the respiratory ventilation device no matter how the respiratory ventilation device is placed or moved. In some embodiments, the first gas channel and the second gas channel can be arranged to be non-parallel (e.g., intersecting) in the liquid chamber, so that the outlet 3733 of the first gas channel and the inlet 3735 of the second gas channel are in different directions. In some embodiments, the distance between the inlet 3735 of the second gas channel and the gas outlet of the humidification component can be greater than the distance between the inlet 3735 of the second gas channel and the gas inlet of the humidification component.

[0104] In some embodiments, the gas inlet and / or gas outlet of the box cover 3700 (i.e., the humidification assembly gas inlet of the liquid chamber and / or the humidification assembly gas outlet of the liquid chamber) may be disposed on the first side surface of the cover shell 3710 of the liquid chamber (corresponding to the first side surface of the inner shell 3730). In some embodiments, the outlet 3733 of the first gas channel and the inlet 3735 of the second gas channel may be disposed on opposite side surfaces of the inner shell 3730. For example, the outlet 3733 of the first gas channel may be disposed on the second side surface of the inner shell 3730, and the inlet 3735 of the second gas channel may be disposed on the third side surface of the inner shell 3730. That is, the outlet 3733 of the first gas channel may face the second side surface of the cover shell 3710 corresponding to the second side surface of the inner body 3730, and the inlet 3735 of the second gas channel may face the third side surface of the cover shell 3710 corresponding to the third side surface of the inner shell 3730.

[0105] In some embodiments, Fig. 10B As shown, part or all of the bottom plate 3750 can be disposed below the lower edge of the gas inlet 37311 and / or the lower edge of the gas outlet 37321 of the box cover 3700. Therefore, the bottom plate 3750 can accommodate a portion of the liquid in the box, and the height difference between the bottom plate 3750 and the lower edge of the gas inlet 37311 and / or the lower edge of the gas outlet 37321 can prevent the liquid in the box from entering the main body of the respiratory ventilation device. In some embodiments, the inner shell 3730 may include one or more third hooks 3736. The third hook 3736 can be used to connect the gas channel sealing frame 3740 to the inner shell 3730. As shown in FIG. Fig. 10B As shown, the inner shell 3730 may include three hooks 3736 , and the three hooks 3736 may be equally spaced apart on the bottom edge of the first side surface of the inner shell 3730 .

[0106] Fig.11 An exemplary bottom plate of the inner shell of the case cover according to some embodiments of the present disclosure is shown. Fig.11 As shown, the bottom plate 3750 may include one or more sealing strips 3752 disposed along the edge of the bottom plate 3750. The sealing strip 3752 may be used to improve the airtightness of the connection between the bottom plate 3750 and the inner shell 3730. In some embodiments, the bottom plate 3750 may include a bottom of the second gas channel (e.g., the second inclined plate 3751) and a bottom of the first gas channel (e.g., the remaining portion of the bottom plate 3750 except the second inclined plate 3751).

[0107] Fig. 12A and 12B An exemplary internal structure of an inner shell of a case cover according to some embodiments of the present disclosure is shown. Fig. 12A The air inlet passage of the tank cover 3700 is shown. Fig. 12A An upward view of the box cover 3710 without the bottom plate 3750 is shown. Fig. 12B The air outlet passage of the tank cover 3700 is shown. Fig. 12B 3700 is shown in cross-section. In some embodiments, the air inlet passage (ie, Fig. 12A The first gas channel indicated by the arrow shown in FIG. 37 may include a first portion and a second portion. The first portion of the first gas channel may extend from the gas inlet of the box cover 3700 (e.g., the first hole 3721) to a common plane (e.g., the Fig. 12A and 12B 3737). The second portion of the first gas channel can extend from the common plane 3737 to the outlet 3733 of the first gas channel. In some embodiments, the second gas channel may include a first portion and a second portion. The first portion of the second gas channel can extend from the inlet of the second gas channel 3735 to the common plane 3737. The second portion of the second gas channel can extend from the common plane 3737 to the gas outlet (e.g., the second hole 3722) of the box cover 3700.

[0108] In some embodiments, the first portion of the first gas channel may be substantially parallel to the second portion of the second gas channel along a direction having an angle (e.g., substantially perpendicular) with the first side surface of the cover shell 3710 of the case cover 3700 (e.g., the side surface including the connecting frame 3713 as shown in FIG. 5 ). In some embodiments, the second portion of the first gas channel and the first portion of the second gas channel may be disposed in different layers. In some embodiments, a first projection of the second portion of the first gas channel on a horizontal plane and a second projection of the first portion of the second gas channel on the horizontal plane may intersect or at least partially overlap. In some embodiments, as Fig. 12A and 12B As shown, the second portion of the first gas channel may be disposed below the first portion of the second gas channel. In some embodiments, the first portion of the second gas channel may be disposed below the second portion of the first gas channel. In some embodiments, the area of ​​the first cross-section of the first gas channel located on the common plane may be equal to or less than a portion (e.g., half) of the area of ​​the gas inlet (e.g., the first hole 3721) of the box cover 3700. In some embodiments, the area of ​​the second cross-section of the second gas channel located on the common plane may be equal to or less than a portion (e.g., half) of the area of ​​the gas outlet (e.g., the second hole 3722) of the box cover 3700.

[0109] In some embodiments, a first inclined plate 3739 (see FIG. 37A ) may be provided between the first cross section and the gas inlet (eg, the first hole 3721 ) of the tank cover 3700 . Fig. 10B and 12B ). The first inclined plate 3739 can be used to smooth the flow of pressurized respiratory gas in the first gas channel. In some embodiments, the first inclined plate 3739 (see Fig. 10B and 12B ) can be provided as part of the inner shell 3730. In some embodiments, a second inclined plate 3751 can be provided between the second cross section and the gas outlet (e.g., the second hole 3722) of the box cover 3700. The second inclined plate 3751 can be used to smooth the flow of the humidified and pressurized respiratory gas in the second gas channel. In some embodiments, the second inclined plate 3751 (see Fig.11 and 12B ) may be disposed on the bottom of the box cover 3700. For example, the second inclined plate 3751 may be a part of the bottom plate 3750.

[0110] It should be noted that the above description of the can lid 3700 is provided for illustrative purposes only and is not intended to limit the scope of the present disclosure. For those of ordinary skill in the art, various changes and modifications can be made under the teachings of the present disclosure. However, these changes and modifications do not depart from the scope of the present disclosure.

[0111] In addition, certain terms have been used to describe embodiments of the present disclosure. For example, the terms "one embodiment", "embodiment" and / or "some embodiments" mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present disclosure. Therefore, it should be emphasized and understood that two or more references to "embodiment" or "one embodiment" or "alternative embodiment" in various parts of this specification do not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics may be appropriately combined in one or more embodiments of the present disclosure.

[0112] Finally, it should be understood that the embodiments of the application disclosed herein are illustrations of the principles of the embodiments of the application. Other modifications that may be adopted may be within the scope of the application. Therefore, as an example and not a limitation, alternative configurations of the embodiments of the application may be utilized according to the teachings herein. Therefore, the embodiments of the application are not limited to those precisely as shown in the figures and described herein.

Claims

1. A humidification assembly configured to humidify pressurized breathing gas from a respiratory ventilation device; The humidification assembly includes a liquid chamber configured to contain a liquid; The liquid chamber comprises a box body and a box cover; The box cover comprises: a first gas channel, a second gas channel, a humidification assembly gas inlet, the humidification assembly gas inlet configured to introduce the pressurized breathing gas into the housing via the first gas channel, wherein the first gas channel includes an outlet, and a humidification assembly gas outlet configured to direct the humidified and pressurized respiratory gas out of the housing via the second gas passage, wherein the second gas passage includes an inlet; The outlet and the inlet are disposed in the liquid chamber, and the outlet and the inlet open in different directions; The liquid chamber also includes a shell, wherein the outlet of the first gas channel faces a second side surface of the shell of the liquid chamber, and the inlet of the second gas channel faces a third side surface of the shell of the liquid chamber, and the second side surface of the shell of the liquid chamber is opposite to the third side surface of the shell of the liquid chamber. 2 . The humidification assembly of claim 1 , wherein at least a portion of the first gas channel and at least a portion of the second gas channel extend substantially along a same plane. 3 . The humidifying assembly according to claim 1 , wherein at least one of the first gas channel and the second gas channel comprises a plurality of extension directions along its length. 4 . The humidifying assembly according to claim 1 , wherein a portion of the first gas channel and a portion of the second gas channel are provided in different layers.

5. A humidifying assembly according to claim 1, wherein at least a portion of the bottom of the first gas channel is located below the lower edge of the gas inlet of the humidifying assembly of the liquid chamber, and / or at least a portion of the bottom of the second gas channel is located below the lower edge of the gas outlet of the humidifying assembly of the liquid chamber.

6. The humidifying assembly according to claim 1 or 2, wherein: The first gas channel and / or the second gas channel has a plurality of different cross-sectional areas along the extension direction thereof. 7 . The humidifying assembly according to claim 1 , wherein at least a portion of the first gas channel and / or the second gas channel has a substantially rectangular cross-section.

8. The humidifying assembly according to claim 1, comprising: The humidification component is connected to the main body of the respiratory ventilation device through at least one connection port to form a flow channel between the main body of the respiratory ventilation device and the liquid chamber; the connection port includes a sealing member, which at least partially forms the flow channel.

9. The humidifying assembly according to claim 1, comprising: directing the humidified and pressurized breathing gas back into the body of the respiratory ventilation device via the second gas passage; Alternatively, the humidified and pressurized breathing gas is introduced into the breathing tube via the second gas channel.

10. A respiratory ventilation device for delivering respiratory gas to a patient interface, the respiratory ventilation device comprising a humidification assembly according to any one of claims 1 to 9, and the respiratory ventilation device further comprising: a gas pressurizing unit configured to generate pressurized breathing gas by pressurizing the breathing gas, the gas pressurizing unit being located in a body of the respiratory ventilation device, the body of the respiratory ventilation device comprising a housing having a first sidewall for discharging the pressurized breathing gas; a primary gas inlet configured to introduce the breathing gas into the respiratory ventilation device, the primary gas inlet being disposed on a second side wall of the housing of a body of the respiratory ventilation device; and a primary gas outlet configured to discharge the humidified and pressurized breathing gas to the breathing tube.

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