Respiratory ventilation equipment

Abstract

The present application provides a respiratory ventilation device, which is used to deliver respiratory gas to a patient interface, the respiratory ventilation device includes a gas pressurization unit and a humidification component, the gas pressurization unit is positioned in the main body of the respiratory ventilation device, the humidification component includes a liquid chamber, the liquid chamber is used to contain one or more liquids, wherein the liquid chamber includes a box body and a box cover, the box cover can be rotatably connected to the box body around a rotation axis through a connecting mechanism, and the humidification component and the main body of the respiratory ventilation device are fluidically connected by closing the box cover or fluidically disconnected by opening the box cover.

Description

[0001] This application is a divisional application of the Chinese patent application with application number 201880093168.8, application date October 26, 2018, and name “System and method for delivering breathing gas”. Technical Field

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

[0003] Breathing is important for maintaining the life 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 airway. There are a range of breathing disorders (e.g., apnea, hypopnea, hyperpnea, snoring, etc.). Breathing disorders may threaten the health (and / or life) of a subject. Therefore, it is desirable to develop a respiratory ventilation device for delivering breathing gases to a subject. Summary of the invention

[0004] The purpose of this application is to provide a respiratory ventilation device.

[0005] In order to achieve the above-mentioned purpose, the present application provides a respiratory ventilation device, configured to deliver respiratory gas to a patient interface, the respiratory ventilation device comprising: a gas pressurizing unit positioned in the main body of the respiratory ventilation device; a humidification component, the humidification component comprising a liquid chamber, the liquid chamber being configured to contain one or more liquids, wherein the liquid chamber comprises a box body and a box cover, the box cover being rotatably connected to the box body around a rotation axis via a connecting mechanism, and the humidification component and the main body of the respiratory ventilation device are fluidically connected by closing the box cover or fluidically disconnected by opening the box cover.

[0006] In one embodiment, the tank body comprises an opening for filling at least one of the one or more liquids, wherein the opening can be opened by opening the tank cover or closed by closing the tank cover, the liquid chamber is mounted on the main body of the respiratory ventilation device, and the tank cover of the liquid chamber is open or closed.

[0007] By using a pivotable case cover to allow the body and the 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 case (usually filled with water) can be isolated from the fluid seal, making the mechanical connection between the body and the case easier to operate while ensuring that the fluid connection is airtight under pressure. In addition, the lever effect of the case 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. In some embodiments, the liquid chamber can be directly mounted on the body of the respiratory ventilation device, and the liquid chamber and the body of the respiratory ventilation device can be fluidly connected at least through a connection port, the connection port is used to form at least one flow channel between the body of the respiratory ventilation device and the liquid chamber, and the liquid chamber can include a case cover that can be opened. In order to fill the liquid in the liquid chamber, the user only needs to open the case cover and fill the liquid in the case. When filling the liquid, the fluid connection between the liquid chamber and the body can be disconnected. Therefore, the respiratory ventilation device has a simplified structure and is easy to use. In some embodiments, when the box cover is closed, the box body and the box cover may 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. Therefore, the opening and closing of the box cover can be facilitated, 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.

[0008] 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°.

[0009] 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.

[0010] 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.

[0011] In some embodiments, the humidification component and the main body of the respiratory ventilation device can be fluidically 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 / or a gas outlet; wherein the connecting port includes an axial seal, which is used to fluid-tightly connect the gas inlet and / or the gas outlet.

[0012] By using an axial seal, the seal 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.

[0013] In some embodiments, the axial seal comprises a sealing plane sealing with the liquid chamber, the angle between the sealing plane and the horizontal plane being between -75° and 75°, in some other embodiments, the angle being between -30° and 30°, and in some other embodiments, the angle being between 15° and 65°; and / or wherein the angle between the sealing plane and the attachment direction is between 15° and 165°, in some other embodiments, the angle being between 30° and 150°, and in some other embodiments, the angle being between 45° and 135°, and in still other embodiments, the angle being between 70° and 110°; and / or wherein the angle between the liquid level and the unlocking direction is between 15° and 165°, in some other embodiments, the angle being between 30° and 150°, and in some other embodiments, the angle being between 45° and 135°, and in still other embodiments, the angle being between 70° and 110°.

[0014] 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.

[0015] In some embodiments, the inner surface of the axial seal 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 and the gas inlet is not in contact with 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 D2240Typ 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 the state in which the main body and the humidification component are unlocked.

[0016] 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 seal.

[0017] In some embodiments, the axial seal is formed around the inlet opening and / or around the outlet opening.

[0018] In some embodiments, the inlet hole and the outlet hole are formed of a material having a higher hardness than the elastic material forming the axial seal, and the inlet hole and the outlet hole are spaced apart in the axial direction of the axial seal by the axial seal. In some embodiments, the inlet hole and the outlet hole are spaced apart by the axial seal in the axial direction of the axial seal 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 seal, which further increases the comfort of the user.

[0019] In some embodiments, the axial seal includes multiple components composed of one or more elastomeric materials and is configured such that only dynamic friction forces exist between the components during coupling or decoupling of the humidification assembly.

[0020] In some embodiments, the axial seal 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.

[0021] In some embodiments, the liquid chamber is detachably connected to the main body of the respiratory ventilation device via a push-push mechanism.

[0022] In some embodiments, the pushing direction of the push-push mechanism is substantially perpendicular to the rotation axis of the connecting mechanism, wherein the humidification assembly and the main body of the respiratory ventilation device can be fluidically connected by connecting the case to the main body along the pushing direction when the case is connected to the main body, and by connecting the liquid chamber to the main body along the pushing direction when the case cover is closed.

[0023] In some embodiments, the gas pressurization unit is configured to generate pressurized breathing gas by pressurizing the breathing gas; the main body of the respiratory ventilation device includes a shell, which is provided with a first side wall, and the first side wall is configured to discharge the pressurized breathing gas; the humidification component is used to humidify the pressurized breathing gas; the respiratory ventilation device also includes: a first gas inlet, which is used to introduce the breathing gas into the respiratory ventilation device, and the gas inlet is arranged on the second side wall of the shell of the main body of the respiratory ventilation device; and a first gas outlet, which is configured to discharge the humidified and pressurized breathing gas into the breathing tube; wherein the liquid chamber can be opened from the front surface of the respiratory ventilation device; wherein the humidification component also includes a heating plate, which is configured to heat one or more liquids and generate steam to humidify the pressurized breathing gas.

[0024] In some embodiments, the connection mechanism between the box body and the box cover includes: one or more first connecting members arranged on the box body; and one or more second connecting members arranged on the box cover, and the one or more second connecting members are pivotally connected to the one or more first connecting members.

[0025] In some embodiments, each of the one or more first connectors includes a pin hole, and each of the one or more second connectors includes a pin.

[0026] In some embodiments, each of the one or more second connectors includes a pin hole, and each of the one or more first connectors includes a pin.

[0027] In some embodiments, each of the one or more first connectors includes a first inclined guide surface, each of the one or more second connectors includes a second inclined guide surface, and the first inclined guide surface and the second inclined guide surface are configured to facilitate mounting the box cover on the box body.

[0028] In some embodiments, each of the one or more first connectors includes a protruding post, each of the one or more second connectors includes a groove, and the groove is used to accommodate the protruding post and limit the return rotation movement of the box cover when the box cover is opened to a specific angle.

[0029] In some embodiments, each of the one or more second connectors further includes a guide groove disposed along a portion of a movement path of the protruding post, the guide groove being configured to smooth the movement of the protruding post.

[0030] In some embodiments, the guide groove includes a first end adjacent to the groove and a second end distal from the groove, and a depth of the guide groove gradually changes from a relatively small value at the first end to a relatively large value at the second end.

[0031] In some embodiments, each of the one or more second connectors includes a baffle configured to limit a maximum rotational movement of the case cover when the case cover is opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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:

[0033] Figure 1 shows an exemplary respiratory ventilation device according to some embodiments of the present disclosure;

[0034] Figure 2 shows an exemplary respiratory ventilation device according to some embodiments of the present disclosure;

[0035] Figure 3A and Figure 3B shows an exploded view of an exemplary liquid chamber according to some embodiments of the present disclosure;

[0036] Figure 4 shows an exemplary push-push mechanism connected to a liquid chamber of a respiratory ventilation device according to some embodiments of the present disclosure;

[0037] Figure 5A and Figure 5B shows an exemplary push-push mechanism according to some embodiments of the present disclosure;

[0038] Fig. 6A and Figure 6BAn exemplary process of installing a liquid chamber on a body of a respiratory ventilation device according to some embodiments of the present disclosure by a push-push mechanism is shown;

[0039] Figure 6C and Fig.6D shows an exemplary process of removing a liquid chamber from a body of a respiratory ventilation device according to some embodiments of the present disclosure via a push-push mechanism;

[0040] 7A to 7D shows an exemplary connection between a liquid chamber and a body of a respiratory ventilation device according to some embodiments of the present disclosure;

[0041] Fig. 8A and Figure 8B shows an exemplary liquid chamber of a respiratory ventilation device according to some embodiments of the present disclosure;

[0042] Fig. 9 An exemplary case cover of a liquid chamber of a respiratory ventilation device according to some embodiments of the present disclosure is shown;

[0043] FIG. 10A to FIG. 10C An exemplary housing of a liquid chamber of a respiratory ventilation device according to some embodiments of the present disclosure is shown;

[0044] Fig.11A and Fig. 11B shows an exemplary case according to some embodiments of the present disclosure;

[0045] Fig. 12A and Fig. 12B shows an exemplary case cover according to some embodiments of the present disclosure;

[0046] Fig.13A and Fig. 13B The figure shows the cooperation between the protrusion of the first connecting member of the box body and the groove of the second connecting member of the box cover according to some embodiments of the present disclosure;

[0047] Fig.14A and Fig. 14B An exemplary connection of a tank cover to a tank body of a liquid chamber according to some embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0048] The terms used herein are only used to describe specific exemplary embodiments and are not restrictive. As used herein, the singular forms "a", "an" and "the" may include plural forms unless the context clearly indicates otherwise. It should be further understood that the terms "include" and / or "comprise" used in this application specify the features, integers, steps, operations, elements and / or components described, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] The respiratory ventilation device can be configured to detect, diagnose, treat, prevent and / or improve a subject's respiratory-related conditions. 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 pressurized breathing gas. In some embodiments, the breathing tube may be connected to a subject interface. Therefore, the pressurized breathing gas produced by the respiratory ventilation device can be discharged to the subject via the breathing tube and the subject interface.

[0053] In some embodiments, the object can be a healthy person. In some embodiments, the object can be a patient. In some embodiments, the patient can suffer from one or more respiratory-related conditions. In some embodiments, the respiratory-related conditions can be characterized by apnea, hypopnea or hyperpnea, etc. In some embodiments, the object interface can be configured to connect the respiratory ventilation device to the object, for example, by providing a flow of breathing gas (e.g., air). In some embodiments, the object interface may include a gas channel for guiding the breathing gas. The object interface may include a mask, a tube, etc. In some embodiments, the breathing tube may be configured to guide the breathing gas from the respiratory ventilation device to the object interface. The breathing tube may include a gas channel for guiding the breathing gas. In some embodiments, the breathing tube can be sealed and connected to the gas outlet of the respiratory ventilation device. In some embodiments, the breathing tube can be sealed and connected to the object interface.

[0054] A respiratory ventilation device may include a gas pressurization unit and a humidification component.

[0055] The gas pressurization unit can be configured to pressurize the breathing gas introduced into the respiratory ventilation device. In some embodiments, the gas pressurization unit can produce pressurized breathing gas based on the introduced ambient gas (e.g., atmosphere). In some embodiments, the gas pressurization unit can provide pressurized breathing gas to the subject. In some embodiments, the gas pressurization unit may include a blower (e.g., a motor-driven blower). In some embodiments, the gas pressurization unit may include a compressed gas reservoir. In some embodiments, when the blower is running, the breathing gas (e.g., ambient gas) can be continuously inhaled into the respiratory ventilation device via the gas inlet, and then the breathing gas can be pressurized. The pressurized breathing gas produced by the gas pressurization unit can be further discharged to the breathing tube via the gas outlet.

[0056] The humidification component can be configured to humidify (pressurized) breathing gases. In some embodiments, the humidification component can humidify (pressurized) breathing gases by introducing water vapor into the (pressurized) breathing gases. In some embodiments, the humidification component may include a liquid chamber and / or a heating device. The liquid chamber may be configured to contain 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 in a temperature range of, for example, 30-50 degrees Celsius. Water vapor can be introduced into the (pressurized) breathing gases, and then the (pressurized) breathing gases can be humidified. In some embodiments, the liquid chamber may include a casing and a casing cover.

[0057] In some embodiments, the heating device may include a heating plate installed under the box or the bottom plate inside the box, one or more heating rods, one or more heating electrodes, etc., or any combination thereof.

[0058] Figure 1 An exemplary respiratory ventilation device according to some embodiments of the present application is shown. Figure 1 As shown, the respiratory ventilation device 300 may include a main body 310 and a liquid chamber 320. The respiratory ventilation device 300 may also include a gas inlet 332 and a gas outlet 331. In some embodiments, the main body 310 of the respiratory ventilation device 300 may include a shell. The shell may include a first side wall (e.g., located at the junction between the main body 310 and the liquid chamber 320) and a second side wall (e.g., a rear side). The first side wall may be configured to discharge pressurized respiratory gas. The gas inlet 332 may be disposed on the main body 310. In some embodiments, the gas inlet 332 may be disposed on the second side wall of the shell of the main body 310 of the respiratory ventilation device 300. In some embodiments, the gas inlet 332 may be disposed on the front side, the rear side, or the top side of the respiratory ventilation device 300. In some embodiments, the gas inlet 332 may be disposed on a side of the respiratory ventilation device 300 opposite to the liquid chamber 320. As Figure 1 As shown, since the liquid chamber 320 is disposed on the right side of the main body 310, the gas inlet 332 can be disposed on the left side of the respiratory ventilation device 300. Figure 1 As shown, the gas outlet 331 is disposed on the body 310. The gas outlet 331 can be disposed on the same side of the respiratory ventilation device 300 as the gas inlet port 332. In some embodiments, the gas outlet 331 and the gas inlet port 332 can be disposed on different sides of the respiratory ventilation device 300. In some embodiments, the gas outlet 331 can be disposed on the liquid chamber 320.

[0059] Figure 2 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 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 thermally conductive plate 1810 (see Figure 3A and 3B ). 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.

[0060] In some embodiments, the body 1702 may include a gas pressurization unit ( Figure 1), gas inlet 1706, gas outlet 1708 and / or support plate 1707. In some embodiments, gas inlet 1706 and / or gas outlet 1708 can be disposed at a first interface between body 1702 and liquid chamber 1704. In some embodiments, support plate 1707 can be disposed at a second interface between body 1702 and liquid chamber 1704. In some embodiments, support plate 1707 can be fixed to a substrate of body 1702. In some embodiments, the first interface between body 1702 and liquid chamber 1704 (see Figures 7A-7D ) may refer to the side surface of the body 1702 and the corresponding side surface of the liquid chamber 1704. In some embodiments, the second interface between the body 1702 and the liquid chamber 1704 (see Figure 2-6D ) may refer to the bottom surface of the liquid chamber 1704 and the corresponding surface of the support plate 1707 of the main body 1702. In some embodiments, the gas outlet 1708 may be configured to discharge the pressurized breathing gas from the main body 1702 to the liquid chamber 1704. In some embodiments, the gas inlet 1706 may be configured to direct the pressurized and humidified breathing gas from the liquid chamber 1704 back into the main body 1702. In some embodiments, the support plate 1707 may include a first hole 1709 and / or a second hole 1711. In some embodiments, the first hole 1709 and / or the second hole 1711 may be disposed on the second interface. In some embodiments, at least a portion of the heating plate 1710 may be disposed in the second hole 1711.

[0061] The heating plate 1710 can be configured to heat one or more liquids in the liquid chamber 1704 and / or generate steam to humidify the pressurized breathing gas. In some embodiments, the heating plate 1710 can be mounted on the body 1702 by one or more springs. The heating plate 1710 can move up and down through the second hole 1711 when driven by pressure or when the pressure is released.

[0062] In some embodiments, the liquid chamber 1704 can be detachably connected to the body 1702, so that the humidification assembly can be detachably connected to the body 1702. For example, the liquid chamber 1704 can be detachably connected to the body 1702 by a push-push mechanism (see Figure 4-6D ) is detachably connected to the main body 1702 via a hole (e.g., first hole 1709) of the support plate 1707. If the liquid chamber 1704 is mounted on the main body 1702 of the respiratory ventilation device 1700, the bottom of the liquid chamber 1704 (e.g., the heat conductive plate of the liquid chamber 1704) can be in close contact with the heating plate 1710. More description of the humidification assembly can be found in other parts of this disclosure (e.g., Figure 3A and 3Band its description).

[0063] Figure 3A and 3B An exploded view of an exemplary liquid chamber according to some embodiments of the present disclosure is shown. In some embodiments, as Figure 3A and 3B 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.

[0064] 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, mortise and tenon, 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 heat conducting plate 1810 and the bottom frame of 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, mortising, clamping, meshing, etc. or any combination thereof. As another example, the heat conducting plate sealing gasket 1809 can be fixed to the bottom frame of the tank shell 1808 by bonding, riveting, mortising, clamping, meshing, etc. or any combination thereof.

[0065] Figure 4An exemplary push-push mechanism connected to a liquid chamber of a respiratory ventilation device according to some embodiments of the present disclosure is shown. In some embodiments, the push-push mechanism 1904 can be disposed 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 via a push rod 1906. In some embodiments, the push rod 1906 can be disposed below the bottom surface of the liquid chamber 1704.

[0066] In some embodiments, the liquid chamber 1704 can be driven by a first thrust. When the first thrust is released, the push rod 1906 can be locked with the push-push mechanism 1904 so that the liquid chamber 1704 can be mounted on the body 1702 of the respiratory ventilation device 1700. If the liquid chamber 1704 is driven by a second thrust and when the second thrust is released, the push rod 1906 can be removed from the push-push mechanism 1904 so that the liquid chamber 1704 can be released from the body 1702 of the respiratory ventilation device 1700. In some embodiments, the direction of the first thrust can be the same as the direction of the second thrust. For example, the direction of the first thrust and the direction of the second thrust can be vertically downward. In some embodiments, the push-push mechanism 1904 can be disposed on the side of the first interface between the body 1702 and the liquid chamber 1704, and then the first thrust and the second thrust can be in a horizontal direction.

[0067] Figure 5A and 5B An exemplary push-push mechanism according to some embodiments of the present disclosure is shown. Figure 5A An axonometric view of the push-push mechanism 1904 is shown. Figure 5B An exploded view of the push-push mechanism 1904 is shown. In some embodiments, as Figure 5A and 5B As shown, the push-push mechanism 1904 may include a guide groove 2002, a slider 2004, a first spring 2006, a second spring 2008 and a push rod 1906 (see Figure 4 ) wait.

[0068] The guide groove 2002 can be configured to accommodate the first spring 2006 and the second spring 2008 and guide the movement of the slider 2004. In some embodiments, the guide groove 2002 can be disposed on the body (e.g., body 1702) of the respiratory ventilation device 1700. For example, the guide groove 2002 can be disposed below the support plate 1707 of the body (e.g., body 1702) of the respiratory ventilation device 1700. In some embodiments, the guide groove 2002 can be fixed to the body (e.g., body 1702) by bonding, riveting, mortising, clamping, meshing, etc. or any combination thereof. In some embodiments, the guide groove 2002 can be made of materials such as cast iron, stainless steel, non-ferrous metals, plastics, etc. or any combination thereof.

[0069] The slider 2004 may be mounted on the guide slot 2002. In some embodiments, the slider 2004 may move forward and backward in a first direction along the guide slot 2002. In some embodiments, the first direction may be parallel to the guide slot 2002. In some embodiments, the slider 2004 may include a guide block 2005. The guide block 2005 may be configured to guide or limit the movement position of the push rod 1906. In some embodiments, as Figure 5A and 5B As shown, the guide block 2005 may have a frame similar to the character A. In some embodiments, the guide block 2005 may include a frame different from the character A (e.g., a frame of the character N or M, etc.). In some embodiments, the guide block 2005 may include a first inclined surface 2015, a groove 2035, a second inclined surface 2025, and a third inclined surface 2055. In some embodiments, the third inclined surface 2055 may be substantially vertical. In some embodiments, the inclination direction of the first inclined surface 2015 may be different from the inclination direction of the second inclined surface 2025. In some embodiments, the first angle between the first inclined surface 2015 and the vertical direction may be greater than the second angle between the second inclined surface 2025 and the vertical direction. The first inclined surface 2015, the second inclined surface 2025, and / or the third inclined surface 2055 may be configured to guide the moving position of the push rod 1906. The groove 2035 may be configured to limit the moving position of the push rod 1906. In some embodiments, the guide block 2005 may include a first protrusion 2065, a second protrusion 2075, and / or a third protrusion 2085. The first protrusion 2065 and / or the second protrusion 2075 may be configured to prevent the push rod 1906 from moving out of the groove 2035 when the liquid chamber 1704 is mounted on the body 1702, so that the liquid chamber 1704 can be fixed to the body 1702. In some embodiments, the first protrusion 2065 and / or the second protrusion 2075 may be sharp. In some embodiments, the bottom end of the first protrusion 2065 may be lower than the bottom end of the second protrusion 2075. In some embodiments, the first protrusion 2065 and the second protrusion 2075 may be arranged on the same side of the third protrusion 2085 in the horizontal direction.

[0070] In some embodiments, the slider 2004 may further include a protrusion 2045 (or a bump) located below the groove 2035 of the guide block 2005. The protrusion 2045 may include a first inclined surface and a second inclined surface. The first inclined surface of the protrusion 2045 may be close to the first inclined surface of the guide block 2005. The second inclined surface of the protrusion 2045 may be close to the second inclined surface of the guide block 2005. In some embodiments, the groove 2035 may limit the moving position of the push rod 1906 by cooperating with the protrusion 2045. In some embodiments, the slider 2004 may be made of a material such as cast iron, stainless steel, non-ferrous metal, plastic, etc. or any combination thereof. In some embodiments, the material of the slider 2004 may be the same as or different from the material of the guide groove 2002.

[0071] A first spring 2006 and a second spring 2008 may be disposed in the guide slot 2002. The first spring 2006 may include a first end and a second end. The first end of the first spring 2006 may be connected to the first end of the guide block 2005. The second end of the first spring 2006 may be fixed to the body (e.g., body 1702) of the respiratory ventilation device 1700. The second spring 2008 may include a first end and a second end. The first end of the second spring 2008 may be connected to the second end of the guide block 2005. The second end of the second spring 2008 may be fixed to the body (e.g., body 1702) of the respiratory ventilation device. In some embodiments, the first spring 2006 may be the same or different from the second spring 2008 in terms of, for example, material (e.g., carbon steel or alloy steel), type (e.g., coil spring, wave spring, shaped spring, or conical spring), size, etc., or any combination thereof.

[0072] In some embodiments, the first spring 2006 and the second spring 2008 can be configured to guide the moving direction of the guide block 2005 (or the slider 2004). In some embodiments, if the guide block 2005 (or the slider 2004) is driven along a first direction (e.g. Figure 5B The second spring 2008 can be compressed if the guide block 2005 (or the slider 2004) moves in the direction opposite to the first direction (for example, Figure 5B In some embodiments, the first spring 2006 may be omitted.

[0073] In some embodiments, the push rod 1906 may include a first end and a second end. The first end of the push rod 1906 may be mounted on the liquid chamber 1704 (e.g., the housing 1808). The second end of the push rod 1906 may cooperate with the guide block 2005. In some embodiments, the push rod 1906 may move forward and backward along a second direction. In some embodiments, the second direction may be perpendicular to the first direction of movement of the guide block 2005 (or the slider 2004). In some embodiments, the second end of the push rod 1906 may include a fixed structure, such as a protrusion (e.g., a cylinder). In some embodiments, the second end of the push rod 1906 may include a rotatable structure, such as a bearing assembly. In some embodiments, the second end of the push rod 1906 including the fixed structure can slide along the first inclined surface 2015, the third inclined surface 2055, the groove 2035, and the second inclined surface 2025 of the guide block 2005. In some embodiments, the second end of the bolt 1906 including the rotatable structure can roll along the first inclined surface 2015 , the third inclined surface 2055 , the groove 2035 , and the second inclined surface 2025 of the guide block 2005 .

[0074] Fig. 6A and 6B An exemplary process for mounting a liquid chamber on a body of a respiratory ventilation device using a push-push mechanism according to some embodiments of the present disclosure is shown. Fig. 6AAs shown, the liquid chamber 1704 can be driven by a first thrust and then mounted on the body 1702. In some embodiments, the first thrust can be generated by a user (e.g., an object). The direction of the first thrust can be indicated by arrow A (e.g., a vertical direction, also referred to as a 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, in its natural state, the center position of the push rod 1906 can be located on the right side of the bottom of the second protrusion 2075 along the first direction. When driven by the first thrust, the push rod 1906 can move along the second direction (indicated by arrow A) with the liquid chamber 1704 and slide downward along the first inclined surface 2015 of the guide block 2005, and therefore, when the push rod 1906 moves downward, the push rod 1906 can push the guide block 2005 to move along the first direction (indicated by arrow B), and the second spring 2008 can be compressed. At the same time, the compressed second spring 2008 can generate a reaction force, which is used to make the push rod 1906 pressed by the guide block 2005. In some embodiments, the first direction can be substantially perpendicular to the second direction. In some embodiments, if the first thrust is greater than the reaction force, the push rod 1906 can slide downward along the third inclined surface 2055 and move to or near the bottom edge of the third inclined surface 2055. Then, the push rod 1906 can be separated from the first inclined surface and / or the third inclined surface 2055, and can reach below the bottom of the first protrusion 2065.

[0075] In some embodiments, if the first thrust is released, the push rod 1906 may move in a direction opposite to the second direction, and the push rod 1906 may slide in the left portion of the area formed by the protrusion 2045 and the groove 2035 of the guide block 2005. At the same time, the guide block 2005 may move in a direction opposite to the first direction. When the push rod 1906 moves to the top position of the groove 2035, the push rod 1906 and the guide block 2005 may stop moving, and thus, the push rod 1906 may be inserted into the groove 2035 of the guide block 2005 (see Figure 6B ). Therefore, the liquid chamber 1704 can be mounted on the main body 1702 of the respiratory ventilation device. In some embodiments, when the first thrust is applied to the liquid chamber 1704, and / or when the liquid chamber 1704 is mounted on the main body 1702, the heating plate 1710 can be pressed by the bottom surface of the liquid chamber 1704 and can move downward in the second hole 1711. In some embodiments, one or more springs 2202 located below the heating plate 1710 can be pressed, and then the heating plate 1710 and the heat conductive plate 1810 located at the bottom of the liquid chamber 1704 can form close contact (or close contact).

[0076] Figure 6C and6D An exemplary process of removing a liquid chamber from a body of a respiratory ventilation device using a push-push mechanism according to some embodiments of the present disclosure is shown. Figure 6C As shown, the liquid chamber 1704 can be driven by the second thrust and then released from the body 1702. In some embodiments, the second thrust can be generated by a user (e.g., an object). The direction of the second thrust can be indicated by an arrow A (e.g., a vertical direction, also referred to as a second direction). When driven by the second thrust, the push rod 1906 can move along the second direction (indicated by arrow A) with the liquid chamber 1704 and move downward in the right part of the area formed by the projection 2045 and the groove 2035 of the guide block 2005. At the same time, the guide block 2005 can move in the opposite direction of the first direction (indicated by arrow B'). In some embodiments, the movement of the guide block 2005 in the opposite direction of 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 can reach below the bottom of the second protrusion 2075.

[0077] In some embodiments, if the second thrust is released, one or more compressed springs 2202 under the heating plate 1710 can drive the heating plate 1710 to move in a direction opposite to the second direction. This movement of the heating plate 1710 can drive the liquid chamber 1704 to move in a direction opposite to the second direction, and this movement of the liquid chamber 1704 can cause the guide push rod 1906 to move in a direction opposite to the second direction. Then, the push rod 1906 can move along the second inclined surface 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 liquid chamber 1704 can be released from the main body 1702 of the respiratory ventilation device 1700 (see Fig.6D ), and the liquid chamber 1704 can be removed from the body 1702.

[0078] It should be noted that the above description of the push-push mechanism 1904 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 may be made under the teachings of the present disclosure. However, these changes and modifications do not depart from the scope of the present disclosure. In some embodiments, the push-push mechanism 1904 can be installed on the main body 1702 of the respiratory ventilation device in different directions, so different thrusts may be required to install the liquid chamber 1704 and / or install and remove the liquid chamber 1704 from the main body 1702. In some embodiments, the guide block 2005 can be arranged to be mirror-symmetrical to the guide block 2005 shown in Figures 5A-6D. In some embodiments, the push-push mechanism 1904 may include more than one push rod. In some embodiments, the push-push mechanism 1904 can be used to unlock the liquid chamber 1704 from the main body of the respiratory ventilation device 110 by pushing the liquid chamber 1704 along a pushing direction. The pushing direction can be substantially perpendicular to the liquid level in the liquid chamber 1704. In some embodiments, the push-push mechanism 1904 can be used to form an energy storage device for storing the energy of the pushing action and for releasing the stored energy after unlocking the liquid chamber 1704 by applying a force on the liquid chamber substantially in the opposite direction of the pushing direction. It should be noted that in some embodiments, the lid of the liquid chamber 1704 can be configured to be closed by pushing in the pushing direction. In some embodiments, the lid of the liquid chamber 1704 can be configured to be opened by pulling in a direction substantially opposite to the pushing direction. In some embodiments, during operation of the respiratory ventilation device, the user can connect the humidification component (e.g., liquid chamber 1704) to the main body of the respiratory ventilation device by pushing the liquid chamber 1704 in the pushing direction, and / or unlock the humidification component from the main body by pushing the liquid chamber 1704 substantially in the pushing direction. In some embodiments, before performing the connection operation, the user can place the humidification component on the surface of the respiratory ventilation device. In some embodiments, the connecting operation of the humidifying assembly may include locking the case cover with the case body by pushing the case cover substantially along the pushing direction.

[0079] Figures 7A-7D An exemplary connection between a liquid chamber and a body of a respiratory ventilation device is shown according to some embodiments of the present disclosure. Fig. 7A An isometric view of a connector 2301 is shown, which is connected to a cover 2302 of a liquid chamber 2303. It should be noted that for illustration purposes, the cover shell of the cover 2302 is not shown. Fig. 7A Shown in. Figure 7B An isometric view of the connector 2301 is shown. FIG7C shows an isometric view of the box cover 2302. Fig.7D A cross-sectional view of the sealed connection between the gasket 2305 of the connector 2301 and the tank cover 2302 is shown.

[0080] 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 breathing 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 a support plate (e.g., Figure 2 2307) and the box cover 2302 is closed with the box body of the liquid chamber 2303, then 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 can be detachably connected to the box cover 2302. In some embodiments, the box cover 2302 can include a space for mounting the connector 2301. In some embodiments, the connector 2301 and the box cover 2302 can be an integral part.

[0081] like Figure 7BAs 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 detachably 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 support frame 2304 can be made of a rigid plastic material. Exemplary rigid plastic materials may include acrylonitrile butadiene styrene (ABS) resin material, polyoxymethylene (POM) plastic material, polystyrene (PS) plastic material, polymethyl methacrylate (PMMA) plastic material, polycarbonate (PC) plastic material, poly(ethylene terephthalate) (PET) plastic material, poly(butylene terephthalate) (PBT) plastic material or poly(phenylene oxide) (PPO) plastic material, etc. or any combination thereof. In some embodiments, the gasket 2305 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. In some embodiments, gasket 2305 can include a raised edge at the interface of support frame 2304 and gasket 2305. The raised edge of gasket 2305 can facilitate a sealed connection between connector 2301 and the body of the respiratory ventilation device.

[0083] like Figures 7A-7D 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 may 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 a support plate (e.g., a support plate) of the main body of the respiratory ventilation device, Figure 2 2303), and the box cover 2302 is closed with the box body of the liquid chamber 2303, and the box cover 2302 can be sealed with 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 the 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 box cover 2302 can introduce the humidified and pressurized breathing gas from the liquid chamber 2303 back into the main body of the respiratory ventilation device.

[0084] like Fig.7DAs 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] Fig. 8A and 8B An exemplary liquid chamber of a respiratory ventilation device according to some embodiments of the present disclosure is shown. Fig. 8A and 8B A schematic diagram of the liquid chamber 3000 in the open mode is shown from different views. Fig. 8A and 8B 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.

[0086] 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 uncle 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°.

[0087] 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° and 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°.

[0088] In some embodiments, liquid chamber 3000 can be detachably connected to the main body of the respiratory ventilation device via a push-push mechanism (eg, push-push mechanism 1904).

[0089] In some embodiments, the pushing direction of the push-push mechanism can be substantially perpendicular to the rotation axis of the connection mechanism. In some embodiments, the humidification assembly and the main body of the respiratory ventilation device can be fluidly connected by closing the box cover 3004 along the pushing direction of the push-push mechanism when the box body 3002 is attached to the main body and / or by attaching the liquid chamber 3000 to the main body along the pushing direction when the box cover 3004 is closed.

[0090] The shape of the case 3002 may include a cube, a cuboid, or an irregular shape that can match 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 allowable liquid level located on the side surface of the case 3002 and / or a second adhesive mark indicating the maximum allowable liquid level located on the side surface of the case 3002. As another example, the case 3002 may include a float (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. More description of the case 3002 can be found elsewhere in this disclosure (e.g., Figure 3A , 3B and 10A-10C and their descriptions).

[0091] In some embodiments, the shape of the case cover 3004 can be similar to or different from the shape of the case body 3002. The shape of the case cover 3004 can include a cube, a cuboid, or an irregular shape that can fit with the main body of the respiratory ventilation device. The material of the case cover 3004 can be similar to or different from the material of the case body 3002. The case cover 3004 can be transparent, opaque, or translucent. More description of the case cover 3004 can be found elsewhere in this disclosure (e.g., Fig. 9 and its description).

[0092] 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 recesses (e.g., a first recess 3010a or a second recess 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 recesses. In some embodiments, the first recess 3010a and / or the second recess 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.

[0093] 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 provided with a connection mechanism 3009 having a rotation axis and can be pivotally connected to the box body 3002. In some embodiments, the box cover 3004 can be opened by rotating to a specific angle (e.g., 90 degrees, 100 degrees, etc.) relative to the box body 3002. The specific angle can be associated with the maximum rotational movement of the box cover 3004. In some embodiments, the liquid chamber 3000 can be opened from the front surface of the respiratory ventilation device. In some embodiments, as Fig. 8A As shown in FIGS. 8B and 8B , the connection mechanism 3009 can be disposed on the rear side (or rear surface) of the respiratory ventilation device, and the handle 3006 can be disposed on the front surface of the respiratory ventilation device, so that when the box cover 3004 is opened, the lower surface of the box cover 3004 can be substantially upright and face the front surface of the respiratory ventilation device. In some embodiments, the connection mechanism 3009 can be disposed on the side surface of the respiratory ventilation device away from the main body of the respiratory ventilation device, the handle 3006 can be disposed on the top surface of the respiratory ventilation device, and the box cover 3004 can be opened so that the lower surface of the box cover 3004 can be substantially upright and face the main body of the respiratory ventilation device (not shown). In some embodiments, the connection mechanism 3009 can be configured as a guide groove (not shown), and the box cover 3004 can be opened by moving horizontally relative to the box body 3002. More description of the connection mechanism 3009 can be found elsewhere in this disclosure (e.g., Figures 11A-14B and its description).

[0094] In some embodiments, the liquid chamber 3000 may include a connector (e.g. Figure 3A and 3B The connecting piece is a fixing gasket 1806 and / or a box cover sealing gasket 1807 shown in the figure, which is configured to provide a sealed connection between the box body 3002 and the box cover 3004 so that when the box cover 3004 is closed with the box body 3002, the liquid chamber 3000 can be sealed. The connecting piece can be made of a material having properties such as sealing, flexibility, elasticity, or any combination thereof. For example, the connecting piece can include a flexible rubber (such as silicone) or a mixture of flexible rubber and hard rubber. In some embodiments, the connecting piece can be fixed to the bottom surface of the box cover 3004 and / or the upper surface of the box body 3002.

[0095] It should be noted that the above description of the liquid chamber 3000 is provided for the purpose of illustration 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. For example, the case 3002 of the liquid chamber 3000 may be equipped with a sensor for detecting the liquid level of one or more liquids. When the liquid level is less than a predetermined level, the respiratory ventilation device can generate a reminder based on the signal of the sensor. As another example, the case cover 3004 can slide obliquely relative to the case 3002. As another example, the case cover 3004 can slide at a certain angle relative to the case 3002.

[0096] Fig. 9 An exemplary case cover of a liquid chamber of a respiratory ventilation device according to some embodiments of the present disclosure is shown. The case cover 3004 may include a cover shell. The cover shell may include a front surface corresponding to the front surface of the respiratory ventilation device, a rear surface corresponding to the rear surface of the respiratory ventilation device, a top surface away from the corresponding case (e.g., case 3002), a bottom surface that may contact case 3002, a side surface close to the body of the respiratory ventilation device, a side surface away from the body of the respiratory ventilation device, and the like. The case cover 3004 may include a gas inlet 3102, a gas outlet 3104, a handle 3006, a connector 3108 of a connection mechanism 3009, and the like. The gas inlet 3102 may be configured to introduce pressurized respiratory gas from the body of the respiratory ventilation device into the liquid chamber (e.g., liquid chamber 3000). The gas outlet 3104 may be configured to introduce humidified and pressurized respiratory gas from the liquid chamber back into the body of the respiratory ventilation device.

[0097] like Fig. 9 As shown, the handle 3006 can be disposed on the front surface of the box cover 3004. The connector 3108 of the connection mechanism 3009 can be disposed on the rear surface of the box cover 3004. The gas inlet 3102 and the gas outlet 3104 can be disposed on a side surface (e.g., an inclined surface) of the box cover 3004 close to the main body of the respiratory ventilation device. In some embodiments, the gas inlet 3102 and the gas outlet 3104 can be disposed on a portion of the bottom surface of the box cover 3004. The gas inlet 3102 and the gas outlet 3104 can be disposed close to the main body of the respiratory ventilation device and may not contact the box body 3002.

[0098] Figures 10A-10C An exemplary housing of a liquid chamber of a respiratory ventilation device according to some embodiments of the present disclosure is shown. Figures 10A-10CThe case 3002 is shown in different views. The case 3002 may include a front surface facing a user of the respiratory ventilation device, a rear surface away from the user of the respiratory ventilation device, a top surface that may contact the case cover 3004, a bottom surface away from the case cover 3004, a side surface close to the body of the respiratory ventilation device, a side surface away from the body of the respiratory ventilation device, etc. The case 3002 may include a connector 3202 of a connection mechanism 3009, a bolt 3204, one or more notches 3010, etc.

[0099] like Figures 10A-10C As shown, the connecting member 3202 of the connecting mechanism 3009 can be disposed on the rear surface of the box 3002. The connecting member 3202 of the connecting mechanism 3009 and the connecting member 3108 of the connecting mechanism 3009 can form an integral connecting mechanism 3009. The bolt 3204 can be disposed below the bottom surface of the box 3002. The bolt 3204 can be fixed to the bottom surface of the box 3002 by the connecting member 3205. In some embodiments, the bolt 3204 can be related to a push-push mechanism (e.g. Figure 4-6D The one or more recesses 3010 may be provided on the front surface of the case 3002 to coincide with the handle 3006 of the case cover 3004.

[0100] In some embodiments, the side surface of the liquid chamber 3000 near the main body of the respiratory ventilation device can have an angle relative to the horizontal plane. In some embodiments, the angle between the side surface of the case 3002 near the main body of the respiratory ventilation device and the horizontal plane can be greater than the angle between the inclined surface of the case cover 3004 and the horizontal plane, which can facilitate the sealed connection between the case cover 3004 and the main body of the respiratory ventilation device. In some embodiments, the front surface of the case 3002, the rear surface of the case 3002, and / or the side surface of the case 3002 away from the respiratory ventilation device can extend downward to one or more baffles (e.g., baffles 3011a, 3011b, and / or 3011c) located below the bottom surface. If the liquid chamber is installed on the respiratory ventilation device, the baffles 3011a, 3011b, and / or 3011c can form a space to accommodate a portion of the main body of the respiratory ventilation device. If the liquid chamber is placed separately, the baffles 3011a, 3011b, and / or 3011c can support the box 3002 (or the liquid chamber) and / or protect the bolts 3204 and the connector 3205. In some embodiments, the bolts 3204 and the connector 3205 can also refer to push rods (e.g. Figure 4 Push rod 1906 shown in ).

[0101] Fig.11A and 11BAn exemplary case according to some embodiments of the present disclosure is shown. As shown in FIGS. 11A and 11B , the case 3300 may include one or more first connectors 3310 . In some embodiments, each of the one or more first connectors 3310 may include a pin hole 3320 , a stud 3340 , and / or a first inclined guide surface 3330 .

[0102] Fig. 12A and 12B An exemplary case cover according to some embodiments of the present disclosure is shown. As shown in Figures 12A and 12B, the case cover 3400 may include one or more second connectors 3410. In some embodiments, each of the one or more second connectors 3410 may include a pin 3420, a second inclined guide surface 3430, a groove 3440 and / or a guide slot 3450. In some embodiments, the pin 3420 may be placed in the pin hole 3320 so that the case cover 3400 can be fixed to the case 3300. During the process of opening and / or closing the case cover 3400, the pin 3420 may rotate in the pin hole 3320. In some embodiments, the first inclined guide surface 3330 of the first connector 3310 and the second inclined guide surface 3430 of the second connector 3410 may be configured to facilitate mounting the case cover 3400 on the case 3300. In some embodiments, the guide slot 3450 may include 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 groove 3450 may gradually change from a relatively small value at the first end to a relatively large value at the second end. In some embodiments, the guide groove 3450 may be curved to cooperate with the rotational movement of the box cover 3400 relative to the box body 3300.

[0103] Fig.13A and 13B FIG. 4 shows the cooperation between the protrusion of the first connecting member of the box body and the groove of the second connecting member of the box cover according to some embodiments of the present disclosure. Fig.13AAs shown, if the box cover 3400 is closed, the protrusion 3340 can be positioned at or near the second end of the guide groove 3450. In the process of opening the box cover 3400, the protrusion 3340 can gradually slide along the guide groove 3450 from the second end to the first end of the guide groove 3450. The design that the first end of the guide groove 3450 has a relatively small depth relative to the second end of the guide groove 3450 can make the protrusion 3340 fall into the groove 3440 easily. The design that the second end of the guide groove 3450 has a relatively large depth relative to the first end of the guide groove 3450 can facilitate the second end of the guide groove 3450 to accommodate the protrusion 3340 when the box cover 3400 is closed. In some embodiments, if the box cover 3400 is opened to a certain angle, the protrusion 3340 can fall into the groove 3440 and limit the box cover 3400 from rotating and moving back. Because the groove 3440 and the guide groove 3450 are disconnected and / or the depth of the first end of the guide groove 3450 is less than the depth of the groove 3440, the protrusion 3340 is not easily separated from the groove 3440. When the protrusion 3340 falls into the groove 3440, the design of the disconnection between the groove 3440 and the guide groove 3450 and / or the design of the relatively small depth of the first end of the guide groove 3450 can prevent the box cover 3400 from rotating back without external force (e.g., force from the user). If a force is applied on the box cover 3400 (e.g., by the user (e.g., object 180)) to close the box cover 3400, the protrusion 3340 can be separated from the groove 3440 and can gradually slide along the guide groove 3450 from the first end to the second end of the guide groove 3450 until the box cover 3400 is closed. In some embodiments, the protrusion 3340 may have a hemispherical shape, a semi-elliptical shape, or a shape of other convex structures having a curved surface to reduce friction between the protrusion 3340 and the guide groove 3450 .

[0104] Fig.14A and 14B An exemplary connection between the case and the case cover of the liquid chamber 3600 according to some embodiments of the present disclosure is shown. In some embodiments, the case cover 3400 can be rotatably connected to the case 3300 by a connection mechanism (e.g., connection mechanism 3009) including a first connection member 3310 and a second connection member 3410. In some embodiments, the first connection member 3310 can be pivotally connected to the second connection member 3410.

[0105] In some embodiments, Fig.14A and 14B As shown, a pair of first connectors 3310 may be positioned between a pair of second connectors 3410. In some embodiments, a pair of second connectors 3410 may be positioned between a pair of first connectors 3310. In some embodiments, as Fig.14A and 14BAs shown, the first connector 3310 may be disposed on the rear surface of the box body 3300. In some embodiments, the first connector 3310 may be disposed on another surface of the box body 3300. For example, the first connector 3310 may be disposed on both side surfaces of the box body 3300 and close to the rear surface of the box body 3300, and correspondingly, the second connector 3410 may be disposed on both side surfaces of the box cover 3400 and close to the rear surface of the box cover 3400. In another example, the first connector 3310 and the second connector 3410 may be hidden in the box body 3300 or the box cover 3400, occupying a portion of the space of the box body 3300 or the box cover 3400. As another example, the first connector 3310 and the second connector 3410 can be disposed on a side surface of the liquid chamber 3600 and opposite to a gas inlet and / or a gas outlet of a gas passage located above the housing 3300 (i.e., if the user faces the front surface of the respiratory ventilation device, the first connector 3310 and the second connector 3410 can be disposed on the right side surface of the liquid chamber 3600).

[0106] In some embodiments, the box body 3300 and / or the box cover 3400 may have an irregular shape. Therefore, the shape or size of the first connector 3310 and / or the second connector 3410 may be irregular. For example, Fig.14A and 14B As shown, in order to match the irregular shape of the box body 3300 or the box cover 3400, the lengths of the pair of first connectors 3310 can be different, so that when the box cover 3400 is opened, the lower surface of the box cover 3400 can be substantially upright and face the front surface of the respiratory ventilation device. In some embodiments, if the shape of the box body 3300 and / or the box cover 3400 is regular, the first connector 3310 and / or the second connector 3410 can be regular and symmetrical.

[0107] like Fig. 14B As shown, the second connecting member 3410 may include a baffle 3660 or be connected by a baffle 3660. In some embodiments, if the box cover 3400 is opened to a certain angle, the baffle 3660 may be blocked by a portion of the first connecting member 3310, thereby preventing the box cover 3400 from rotating excessively and limiting the maximum rotational movement of the box cover 3400. In some embodiments, the liquid chamber 3600 may include one or more mounting shafts located between the box cover 3400 and the box body 3300. An example of a mounting shaft may be a pin 3420 (see Fig. 12B ). In some embodiments, the mounting shaft may include a first mounting shaft and a second mounting shaft. In some embodiments, the height of the first mounting shaft is greater than the height of the second mounting shaft. In some embodiments, the first mounting shaft may be arranged to be higher than the second mounting shaft.

[0108] It should be noted that the above description of the connection between the case 3300 and the case cover 3400 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, those changes and modifications do not depart from the scope of the present disclosure. In some embodiments, the connection between the case 3300 and the case cover 3400 can be realized in other ways, such as with a hinged connection. For example, the case 3300 and the case cover 3400 can include a cylindrical hole on the same horizontal line, respectively, and the case 3300 and the case cover 3400 can be connected by a hinge pin passing through the hole. As another example, one end of the case 3300 can include a hollow column with a "C" shape, and accordingly, one end of the case cover 3400 can include a column matching the hollow column, so that if the case cover 3400 is installed on the case 3300, the column can be clamped in the C-shaped hollow column to achieve a rotational connection between the case 3300 and the case cover 3400.

[0109] Having thus described the basic concepts, it will be apparent to those skilled in the art, after reading this detailed disclosure, that the foregoing detailed disclosure is intended to be presented by way of example only and not by way of limitation. Although not expressly stated herein, various changes, improvements, and modifications may be intended by those skilled in the art. These changes, improvements, and modifications are intended to be proposed by the present disclosure and are within the spirit and scope of the exemplary embodiments of the present disclosure.

[0110] 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.

[0111] 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 respiratory ventilation device for delivering respiratory gas to a patient interface, characterized in that: The respiratory ventilation device comprises: a gas pressurization unit positioned in a body of the respiratory ventilation device; and a humidification assembly, the humidification assembly comprising a liquid chamber for containing one or more liquids, the humidification assembly and the main body of the respiratory ventilation device being in fluid communication through at least one connection port to form at least one flow channel between the main body of the respiratory ventilation device and the liquid chamber; The liquid chamber comprises a box body and a box cover, wherein the box cover is rotatably connected to the box body around a rotation axis via a connecting mechanism, and by using the pivotable box cover, the main body and the liquid chamber are allowed to be fluidically connected to form the flow channel, and the box cover and the main body of the respiratory ventilation device are fluidically connected by closing the box cover and fluidically disconnected by opening the box cover without unlocking the liquid chamber from the main body.

2. The respiratory ventilation device according to claim 1, characterized in that The tank body comprises an opening for filling at least one of the one or more liquids, wherein the opening can be opened by opening the tank cover or closed by closing the tank cover, the liquid chamber is mounted on the main body of the respiratory ventilation device, and the tank cover of the liquid chamber is open or closed.

3. The respiratory ventilation device according to claim 1, characterized in that The case and the body may be attached to each other by moving the case relative to the body along an attachment direction, the angle between the rotation axis and the attachment direction being between 20° and 160°; and / or The case and the main body are unlocked from each other by moving the case relative to the main body in an unlocking direction, and an angle between the rotation axis and the unlocking direction is between 20° and 160°.

4. The respiratory ventilation device according to any one of claims 1 to 3, characterized in that: The at least one connection port comprises a gas inlet and / or a gas outlet; wherein the connection port comprises an axial seal for connecting the gas inlet and / or the gas outlet in a fluid-tight manner.

5. The respiratory ventilation device according to claim 3, characterized in that The axial seal comprises a sealing plane that seals with the liquid chamber, and the angle between the sealing plane and the horizontal plane is between -75° and 75°; and / or The angle between the sealing plane and the attachment direction is between 15° and 165°.

6. The respiratory ventilation device according to claim 1, characterized in that The liquid chamber is detachably connected to the main body of the respiratory ventilation device via a push-push mechanism.

7. The respiratory ventilation device according to claim 6, wherein: The pushing direction of the push-push mechanism is substantially perpendicular to the rotation axis of the connecting mechanism, wherein the humidification assembly and the main body of the respiratory ventilation device can be fluidically connected by connecting the box body to the main body along the pushing direction when the box body is connected to the main body, and by connecting the liquid chamber to the main body along the pushing direction when the box cover is closed.

8. The respiratory ventilation device according to claim 1, characterized in that The gas pressurizing unit is configured to generate pressurized breathing gas by pressurizing the breathing gas; The body of the respiratory ventilation device includes a housing provided with a first side wall configured to discharge pressurized respiratory gas; The humidification component is used to humidify the pressurized breathing gas; The respiratory ventilation device also includes: a first gas inlet for introducing the breathing gas into the respiratory ventilation device, the gas inlet being disposed on a second side wall of a housing of a main body of the respiratory ventilation device; and a first gas outlet configured to discharge the humidified and pressurized breathing gas into a breathing tube; wherein the liquid chamber is openable from a front surface of the respiratory ventilation device; Wherein, the humidification component further includes a heating plate configured to heat one or more liquids and generate steam to humidify the pressurized breathing gas.

9. The respiratory ventilation device according to claim 1, characterized in that The connecting mechanism between the box body and the box cover comprises: One or more first connecting members disposed on the housing; and One or more second connecting members are arranged on the box cover, and the one or more second connecting members are pivotally connected to the one or more first connecting members.

10. The respiratory ventilation device according to claim 9, characterized in that Each of the one or more first connectors includes a first inclined guide surface, each of the one or more second connectors includes a second inclined guide surface, and the first inclined guide surface and the second inclined guide surface are used to facilitate mounting the box cover on the box body.

11. The respiratory ventilation device according to claim 10, characterized in that Each of the one or more first connectors includes a protruding post, each of the one or more second connectors includes a groove, and the groove is used to accommodate the protruding post and limit the return rotation movement of the box cover when the box cover is opened to a specific angle.

12. The respiratory ventilation device according to claim 11, characterized in that Each of the one or more second connectors further includes a guide groove disposed along a portion of a moving path of the stud, the guide groove being used to smooth the movement of the stud.

13. The respiratory ventilation device according to claim 12, characterized in that The guide groove includes a first end adjacent to the groove and a second end distant from the groove, and a depth of the guide groove gradually changes from a relatively small value located at the first end to a relatively large value located at the second end.

14. The respiratory ventilation device according to claim 10, characterized in that Each of the one or more second connecting members includes a stopper for limiting a maximum rotational movement of the box cover when the box cover is opened.

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