Humidification assembly and breathing ventilation equipment

Abstract

The invention relates to the technical field of ventilation treatment, and discloses a humidifying assembly and breathing ventilation equipment, and the humidifying assembly is configured to humidify pressurized breathing gas from the breathing ventilation equipment. The humidification assembly comprises a liquid chamber configured to contain one or more liquids, wherein the liquid chamber comprises a box body, a box cover, a humidification assembly gas inlet and a humidification assembly gas outlet; the humidifying assembly gas inlet is configured to introduce pressurized breathing gas into the box body through a first gas channel, and the first gas channel comprises an outlet; the humidification assembly gas outlet is configured to direct humidified and pressurized breathing gas back into the body of the breathing ventilation device via a second gas channel, wherein the second gas channel includes an inlet. The box cover comprises a baffle, and the baffle is used for separating the humidifying assembly gas inlet and the humidifying assembly gas outlet, so that breathing gas flowing into the box cover can be isolated from breathing gas flowing out of the box cover.

Description

[0001] This application is a divisional application of the Chinese patent application No. 201880093168.8, with the title of "System and method for delivering respiratory gases", filed on October 26, 2018. TECHNICAL FIELD

[0002] The present application relates generally to the detection, diagnosis, treatment, prevention and amelioration of respiratory-related disorders, and more specifically to systems and methods for delivering respiratory gases. BACKGROUND

[0003] Breathing is important for sustaining the life of a subject, for example, a human. The respiratory system of a subject can facilitate gas exchange. The nose and / or mouth of a subject form the entrance to the airways of the subject. There is a range of respiratory disorders (e.g., apnea, hypopnea, hyperpnea, snoring, etc.). Respiratory disorders can be a threat to the health (and / or life) of a subject. Thus, it is desirable to develop systems and methods for delivering respiratory gases to a subject. SUMMARY

[0004] In one embodiment, a humidification assembly is configured to humidify pressurized respiratory gases from a respiratory ventilation device, wherein the humidification assembly comprises a liquid chamber configured to contain one or more liquids, wherein the liquid chamber comprises a tank, a tank lid, and a humidification assembly gas inlet configured to introduce pressurized respiratory gases into the tank via a first gas passageway, wherein the first gas passageway comprises an outlet.

[0005] In one embodiment, the liquid chamber of the humidification assembly further comprises: a humidification assembly gas outlet configured to introduce humidified and pressurized respiratory gases back into a main body of the respiratory ventilation device via a second gas passageway, wherein the second gas passageway comprises an inlet.

[0006] In one embodiment, the liquid chamber of the humidification assembly comprises an enclosure, wherein the humidification assembly gas inlet of the liquid chamber and / or the humidification assembly gas outlet of the liquid chamber are disposed on a first side surface of the enclosure of the liquid chamber, and wherein the first gas passageway for connecting the first gas passageway and the outlet of the tank, and / or the second gas passageway for connecting the second gas passageway and the inlet of the tank are disposed inside the enclosure of the liquid chamber. In one embodiment, the enclosure comprises an inner shell and a layered structure of a shell. Such layered structure can make the enclosure easy to disassemble and clean.

[0007] By forming the first and second gas channels in the housing of the liquid chamber, the cabinet can comprise a simple design with a wider opening and volume than filling the water through one gas channel, which allows it to be easier to maintain and fill.

[0008] In one embodiment, the outlet of the first gas channel faces a second side surface of the housing of the liquid chamber, the inlet of the second gas channel faces a third side surface of the housing of the liquid chamber, the second side surface of the housing of the liquid chamber is opposite the third surface of the housing of the liquid chamber.

[0009] By separating the inlet and outlet, the gas flow can travel a longer distance while being exposed to the liquid in the cabinet, thereby increasing the humidification efficiency.

[0010] 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 configured to direct the pressurized breathing gas to flow downward to the cabinet.

[0011] In one embodiment, the first gas channel comprises 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. This shape of the gas channel reduces the noise emitted by the liquid chamber through this gas channel.

[0012] Additionally or alternatively, according to one embodiment, the second gas channel comprises a first portion and a second portion, wherein the first portion of the second gas channel extends from the inlet of the second gas channel to a second common plane, wherein the second portion of the second gas channel extends from the second common plane to the humidification assembly gas outlet of the liquid chamber.

[0013] By forming the first and second gas channels with a common plane, a compact design can be achieved.

[0014] Additionally or alternatively, the first and second gas channels have a substantially rectangular cross-section. Such a rectangular cross-section can save dead space and / or increase the area of the cross-section compared to a tubular cross-section, thereby allowing for a more compact design and / or lower resistance to the pressurized gas.

[0015] In one embodiment, the first gas channel and the second gas channel cross each other; wherein a distance between the outlet and the humidification assembly gas inlet is greater than a distance between the outlet and the humidification assembly gas outlet.

[0016] 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.

[0017] Mechanical noise from a body of a respiratory ventilation device for connecting to the humidification assembly gas inlet of the first gas channel and bubbling noise propagating in the tank and through the second gas channel are reduced by the compact design reducing dead corners. The liquid in the tank is also less likely to reach the inlet and outlet.

[0018] In one embodiment, a first portion of the first gas channel is substantially parallel to a second portion of the second gas channel along a direction angled to a first side surface of the housing of the liquid chamber. Additionally or alternatively, according to one embodiment, a second portion of the first gas channel and a 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.

[0019] In one embodiment, the second portion of the first gas channel is arranged below the first portion of the second gas channel, or the first portion of the second gas channel is arranged below the second portion of the first gas channel.

[0020] 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 of an area of the humidification assembly gas inlet 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 of an area of the humidification assembly gas outlet of the liquid chamber.

[0021] In one embodiment, the liquid chamber further comprises: a first inclined plate arranged between the first cross section and the humidification assembly gas inlet of the liquid chamber, the first inclined plate configured to smooth the flow of the pressurized respiratory gas in the first gas channel; and a second inclined plate arranged between the second cross section and the humidification assembly gas outlet of the liquid chamber, the second inclined plate configured to smooth the flow of the humidified and pressurized respiratory gas in the second gas channel.

[0022] In one embodiment, the liquid chamber further comprises a connection plate comprising a first aperture and a second aperture corresponding to the humidification assembly inlet and the humidification assembly gas outlet of the liquid chamber, respectively, the connection plate being configured to allow a sealed connection between the liquid chamber and the main body of the respiratory ventilation device.

[0023] In one embodiment, the liquid chamber further comprises: a first groove disposed between the humidification assembly gas inlet of the liquid chamber and the connection plate, the first groove being configured to contain a first portion of the one or more liquids and to prevent the first portion of the one or more liquids from entering the main body of the respiratory ventilation device when the liquid chamber is tilted; and / or a second groove disposed between the humidification assembly gas outlet of the liquid chamber and the connection plate, the second groove being configured to contain a second portion of the one or more liquids and to prevent the second portion of the one or more liquids from entering the main body of the respiratory ventilation device when the liquid chamber is tilted.

[0024] In one embodiment, the distance between the bottom end of the connection plate and the cover shell is smaller than the distance between the top end of the connection plate and the cover shell.

[0025] In one embodiment, at least a portion of the bottom of the first gas channel is located below the lower edge of the humidification assembly gas inlet 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 humidification assembly gas outlet of the liquid chamber.

[0026] The arrangement can prevent and / or reduce the risk of fluid (e.g. condensation water) being expelled from the gas channel through the gas outlet and / or into the gas outlet when the tank cover is closed.

[0027] In one embodiment, the housing is connected and / or connectable to the tank and / or tank cover and is arranged pivotably relative to the tank. As the first and / or second gas channel is formed with the housing, the structure of the tank can be formed in a very simple manner, allowing for better cleaning and liquid filling.

[0028] In one embodiment, the liquid-contacting side walls of the liquid chamber are at least partially formed by the outer side walls of the tank forming the outer surface of the humidification assembly. Additionally or alternatively, the tank is formed with only one opening for filling liquid and replacing pressurized gas. The liquid chamber and / or tank can be formed in a simpler manner compared to some known designs, e.g. with single-layer side walls, and / or e.g. with an essentially open upper side, thereby reducing weight and size, increasing the liquid-gas contact surface and allowing easier access to the tank / liquid chamber.

[0029] In one embodiment, the lid is pivotably connected to the cabinet by a connection mechanism; wherein at least a portion of the side of the first gas channel proximal to the connection mechanism is covered in flow direction by a side edge of the humidification assembly gas inlet of the liquid chamber, and / or wherein at least a portion of the side of the second gas channel proximal to the connection mechanism is covered in flow direction by a side edge of the humidification assembly gas outlet of the liquid chamber.

[0030] Once the lid is opened by pivoting the lid around the axis of rotation defined by the connection mechanism, the side of the first gas channel and / or second gas channel proximal to the connection mechanism will be turned to a lower position than the other sides of the first gas channel and second gas channel. By covering at least a portion of such side, liquid flow or dripping out of the first gas channel and / or second gas channel is prevented from damaging e.g. electronic components or dripping on e.g. a surface on which the humidification assembly is placed.

[0031] In one embodiment, the lid is pivotably connected to the cabinet by the connection mechanism, and wherein the distance between the connection mechanism and the humidification assembly gas outlet is smaller than the distance between the connection mechanism and the humidification assembly gas inlet.

[0032] Due to the connection mechanism and leverage, the port proximal to the connection mechanism (e.g. the pivotable hinge connection) can have a tighter seal and / or smaller gap error than the port distal to the connection mechanism. By arranging the humidification assembly gas outlet proximal to the connection mechanism, the seal of the humidified gas flowing through the humidification assembly gas outlet is improved, which can in some cases be more critical than the seal of the not yet humidified gas entering the humidification assembly through the humidification assembly.

[0033] In one embodiment, the respiratory ventilation device is configured to deliver respiratory gas to a patient interface, the respiratory ventilation device comprising the above-described humidification assembly, and further comprising: a gas pressurization unit configured to generate pressurized respiratory gas by pressurizing respiratory gas, the gas pressurization unit being located in a main body of the respiratory ventilation device, the main body of the respiratory ventilation device comprising a housing having a first side wall configured to discharge pressurized respiratory gas; a main gas inlet for introducing respiratory gas into the respiratory ventilation device, the main gas inlet being provided on a second side wall of the housing of the main body of the respiratory ventilation device; and a main gas outlet configured to discharge humidified and pressurized respiratory gas to a breathing tube.

[0034] In one embodiment, the main gas outlet is for being provided on the main body of the respiratory ventilation device.

[0035] In one embodiment, the main gas outlet is provided on the liquid chamber.

[0036] In one embodiment, a first side surface of the housing of the liquid chamber faces a first side wall of the housing of the main body of the respiratory ventilation apparatus.

[0037] In one embodiment, a respiratory ventilation apparatus is configured to deliver respiratory gases to a patient interface, the respiratory ventilation apparatus comprising: a gas pressurizing unit positioned in a main body of the respiratory ventilation apparatus; a humidification assembly detachably connected to the main body of the respiratory ventilation apparatus; wherein the humidification assembly comprises: a liquid chamber configured to contain one or more liquids.

[0038] In one embodiment, the liquid chamber comprises a tank body and a tank lid, the tank lid being pivotably connected to the tank body by a connection mechanism having an axis of rotation; wherein the tank body comprises an opening for filling at least one of the one or more liquids, wherein the opening is openable by opening the tank lid and / or closable by closing the tank lid; and wherein the humidification assembly and the main body of the respiratory ventilation apparatus are fluidically connected by closing the tank lid and / or fluidically disconnected by opening the tank lid. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 An exemplary respiratory ventilation apparatus according to some embodiments of the present disclosure is shown; Figure 2A and Figure 2B An exploded view of an exemplary liquid chamber according to some embodiments of the present disclosure is shown; Figures 3A-3D An exemplary connection between a liquid chamber and a main body of a respiratory ventilation apparatus according to some embodiments of the present disclosure is shown; Figure 4 Another exemplary connection between a liquid chamber and a main body of a respiratory ventilation apparatus according to some embodiments of the present disclosure is shown; Figure 5 An exemplary connection to a main body of a respiratory ventilation apparatus according to some embodiments of the present disclosure is shown; Figures 6A-6C An exemplary connection between a liquid chamber and a main body of a respiratory ventilation apparatus according to some embodiments of the present disclosure is shown; Figure 7A and Figure 7B An exemplary connection of a tank lid to a tank body of a liquid chamber according to some embodiments of the present disclosure is shown; Figure 8A and Figure 8B An exemplary tank lid according to some embodiments of the present disclosure is shown; Figure 9An exemplary cover shell is shown in accordance with some embodiments of the present disclosure; Figure 10A and Figure 10B An exemplary inner shell of a case cover is shown in accordance with some embodiments of the present disclosure; Figure 11 An exemplary floor of an inner shell of a case cover is shown in accordance with some embodiments of the present disclosure. DETAILED DESCRIPTION

[0040] The following description presents embodiments to enable a person skilled in the art to make and use the application, and is provided in the context of a particular application and its requirements. Various modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of the application. Thus, the present disclosure is not intended to be limited to the described embodiments but rather to include all alternatives consistent with the widest scope of the claims.

[0041] The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" can include plural forms unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0042] These and other features of the present application, as well as the structure and operation of related elements of the structure and the combination of parts and economies of manufacture, will become more apparent with the following description. Referring to the drawings, where like reference numerals designate like components in the various figures, all of which are meant to form a part of this specification. It is to be understood, however, that the drawings are designed solely for purposes of illustration and not as a definition of the limits of the application. It should be borne in mind that the drawings are not to scale.

[0043] Figure 1 An exemplary respiratory ventilation apparatus is shown in accordance with some embodiments of the present disclosure. Respiratory ventilation apparatus 1700 can include a main body 1702, and / or a humidification assembly. In some embodiments, the heating assembly can be configured to humidify the pressurized respiratory gases to produce pressurized and humidified respiratory gases. In some embodiments, the humidification assembly can include a liquid chamber 1704, a heating plate 1710, and a thermally conductive plate 1810 (see Figure 2A and 2BThe liquid chamber 1704 may be configured to contain one or more liquids (e.g., water and / or a drug). A heat-conducting plate may be configured to conduct heat from the heating plate 1710 to heat the one or more liquids and generate vapor to humidify pressurized breathing gases. In some embodiments, the heat-conducting plate may be disposed at the bottom of the liquid chamber 1704. In some embodiments, the heat-conducting plate may comprise a metallic thermally conductive material.

[0044] In some embodiments, the body 1702 may include a gas pressurization unit located within the body 1702. Figure 1 (Not shown in the diagram), 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 the body 1702 and the liquid chamber 1704. In some embodiments, support plate 1707 may be disposed at a second interface between the body 1702 and the liquid chamber 1704. In some embodiments, support plate 1707 may be fixed to the substrate of the body 1702. In some embodiments, the first interface between the body 1702 and the liquid chamber 1704 (see...) Figures 3A-3D The term "(")" can 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...) Figures 1-2B The term "(")" can refer to the bottom surface of the liquid chamber 1704 and the corresponding surface of the support plate 1707 of the body 1702. In some embodiments, the gas outlet 1708 can be configured to discharge pressurized breathing gas from the body 1702 into the liquid chamber 1704. In some embodiments, the gas inlet 1706 can be configured to guide pressurized and humidified breathing gas from the liquid chamber 1704 back into the 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 a second interface. In some embodiments, at least a portion of the heating plate 1710 may be disposed in the second hole 1711.

[0045] In some embodiments, the liquid chamber 1704 can be detachably connected with the main body 1702, such that the humidification assembly can be detachably connected to the main body 1702. For example, the liquid chamber 1704 can be detachably connected with the main body 1702 via a push-push mechanism through a hole (e.g., the 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 thermally 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 the present disclosure (e.g., in the description of the humidification assembly 100 of FIG. 1). Figure 2A and 2B and the description thereof).

[0046] 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 shown in Figure 2A and 2B the liquid chamber 1704 can include a lid and a tank. In some embodiments, the lid can include a lid shell 1802 and one or more gas channels 1805. In some embodiments, the tank can include a tank shell 1808, a thermally conductive plate gasket 1809, and a thermally conductive plate 1810. It should be noted that in some embodiments, the gas channels 1805 can be provided in the tank. In some embodiments, the liquid chamber 1704 can include a securing gasket 1806 and / or a lid gasket 1807 between the tank and the lid. The securing gasket 1806 and / or the lid gasket 1807 can be configured to enable a sealed connection between the tank and the lid. In some embodiments, the liquid chamber 1704 can include a connecting plate 1803 and / or a gas channel gasket 1804 to cooperate with the main body 1702.

[0047] In some embodiments, the components of the liquid chamber 1704 can be detachably connected. For example, the connection plate 1803 can be disposed on and / or secured to the lid shell 1802 by adhesion, riveting, doweling, clamping, interlocking, or any combination thereof. As another example, the gas passage gasket 1804 can be connected and / or secured to the gas passage 1805. As another example, the securing gasket 1806 and / or the tank lid gasket 1807 can be disposed on and / or secured to the tank shell 1808 to improve the air tightness between the lid shell 1802 and the tank shell 1808. In some embodiments, the securing gasket 1806 can be disposed within the tank lid gasket 1807. As another example, the thermally conductive plate gasket 1809 can be disposed between the thermally conductive plate 1810 and the bottom frame of the tank shell 1808. As yet another example, the thermally conductive plate 1810 can be connected with the thermally conductive plate gasket 1809 by adhesion, riveting, doweling, clamping, interlocking, or any combination thereof. As yet another example, the thermally conductive plate gasket 1809 can be secured to the bottom frame of the tank shell 1808 by adhesion, riveting, doweling, clamping, interlocking, or any combination thereof.

[0048] Figures 3A-3D An exemplary connection between a liquid chamber and a body of a respiratory ventilation apparatus according to some embodiments of the present disclosure is shown. Figure 3A A perspective view of a connection 2301 is shown, which connects with a tank lid 2302 of a liquid chamber 2303. It should be noted that the lid shell of the tank lid 2302 is not shown in Figure 3A for illustration purposes. Figure 3B A perspective view of the connection 2301 is shown. Figure 3C A perspective view of the tank lid 2302 is shown. Figure 3D A cross-sectional view of a sealed connection between a gasket 2305 of the connection 2301 and the tank lid 2302 is shown.

[0049] The connection 2301 can be configured to provide a sealed connection between the tank lid 2302 and the body of the respiratory ventilation apparatus 110, thereby ensuring the air tightness of the pressurized breathing gas flowing between the liquid chamber 2303 and the body of the respiratory ventilation apparatus 110. In some embodiments, the connection 2301 can be secured to the body of the respiratory ventilation apparatus 110. In some embodiments, the connection 2301 can be detachably connected with the body of the respiratory ventilation apparatus 110. In some embodiments, the housing of the body of the respiratory ventilation apparatus 110 can include a space (e.g., a chamber 2502) for accommodating the connection 2301. In some embodiments, the connection 2301 and the body can be a unitary piece. In some embodiments, if the liquid chamber 2303 is secured to a support plate (e.g., the support plate 1701) of the body of the respiratory ventilation apparatus 110, the connection 2301 can be disposed on and / or secured to the support plate. Figure 1In some embodiments, the connection 2301 can provide a sealed connection between the lid 2302 and the body of the respiratory ventilation device 110. In some embodiments, the connection 2301 can be fixed or mounted on the lid 2302. In some embodiments, the connection 2301 can be detachably connected with the lid 2302. In some embodiments, the lid 2302 can include a space for mounting the connection 2301. In some embodiments, the connection 2301 and the lid 2302 can be an integral piece.

[0050] As Figure 3BAs shown, the connector 2301 can include a support frame 2304 and / or a gasket 2305. The support frame 2304 can be configured to support the gasket 2305 and / or facilitate the securement of the gasket 2305 with the body of the respiratory ventilation apparatus 110. In some embodiments, the gasket 2305 can include an inclined surface. In some embodiments, there can be an inclination angle between the inclined surface of the connector 2301 (or the gasket 2305) and a horizontal plane. In some embodiments, the inclination angle can be substantially within 0 degrees to 90 degrees (e.g., within 30 to 60 degrees). The gasket 2305 can be configured to form a sealed connection between the bin lid 2302 and the body of the respiratory ventilation apparatus 110. In some embodiments, the gasket 2305 can include a first hole 2306 and / or a second hole 2307 disposed on the inclined surface. In some embodiments, the support frame 2304 can include at least one gas flow channel connected with the first hole 2306 and / or the second hole 2307. Each of the at least one gas flow channel can be connected with one or more gas channels of the body of the respiratory ventilation apparatus 110. 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 can include a second protruding structure 2312. The first protruding structure 2311 and / or the second protruding structure 2312 can protrude to the bin lid 2302. The first protruding structure 2311 and / or the second protruding structure 2312 can facilitate the sealed connection between the connector 2301 and the bin lid 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 rubber, etc., or any combination thereof). In some embodiments, the first protruding structure 2311 and / or the second protruding structure 2312 can be made of the same material as the gasket 2305. In some embodiments, the first protruding structure 2311 and / or the second protruding structure 2312 can be made of a different material than the material of the gasket 2305. In some embodiments, the thickness of the first protruding structure 2311 and / or the second protruding structure 2312 can be less than the thickness of the gasket 2305.

[0051] In some embodiments, the gasket 2305 may be secured to the body of the breathing ventilation device 110 (e.g., the support frame 2304 of the connector 2301). In some embodiments, the gasket 2305 may be detachably attached to the body of the breathing ventilation device 110 (e.g., the support frame 2304 of the connector 2301) by means of, for example, adhesive bonding, bolting, or combinations thereof. In some embodiments, the support frame 2304 may be made of a rigid plastic material. Exemplary rigid plastic materials may include acrylonitrile butadiene styrene (ABS) resin, polyoxymethylene (POM) plastic, polystyrene (PS) plastic, polymethyl methacrylate (PMMA) plastic, polycarbonate (PC) plastic, polyethylene terephthalate (PET) plastic, polybutylene terephthalate (PBT) plastic, or poly(phenylene oxide) (PPO) plastic, or any combination thereof. In some embodiments, the gasket 2305 may be made of an elastic material, including, for example, an elastomer, rubber (e.g., silicone resin), or combinations thereof. In some embodiments, the gasket 2305 may include a protruding edge located at the interface between the support frame 2304 and the gasket 2305. The protruding edge of the gasket 2305 facilitates a sealing connection between the connector 2301 and the body of the breathing ventilation device 110.

[0052] like Figures 3A-3D As shown, the inclined surface of gasket 2305 can face the corresponding inclined surface of connecting plate 2308 of cover 2302. Cover 2302 may include gas inlet 2309 and gas outlet 2310. A first hole 2306 located on the inclined surface of gasket 2305 may correspond to gas inlet 2309 of cover 2302, and a second hole 2307 located on the inclined surface of gasket 2305 may correspond to gas outlet 2310 of cover 2302. In some embodiments, if liquid chamber 2303 is fixed to a support plate of the body of breathing ventilation device 110 (e.g., Figure 1 The support plate 1707 shown is used, and the cover 2302 is closed to the liquid chamber 2303. The cover 2302 can be sealed to the main body of the breathing ventilation device 110 via a gasket 2305. The first hole 2306 of the gasket 2305 and the gas inlet 2309 of the cover 2302 allow pressurized breathing gas to be introduced from the main body of the breathing ventilation device 110 into the liquid chamber 2303. The second hole 2307 of the gasket 2305 and the gas outlet 2310 of the cover 2302 allow humidified and pressurized breathing gas to be returned from the liquid chamber 2303 to the main body of the breathing ventilation device 110.

[0053] like Figure 3DAs shown, if the lid 2302 is closed, the first protruding structure 2311 can be squeezed and deformed, and then can form a closed-line contact with the connecting plate 2308 of the lid 2302 (e.g., around the edge of the gas inlet 2309 and / or the gas outlet 2310). Therefore, the airtightness of the breathing gas flowing between the body of the breathing ventilation device 110 and the liquid chamber 2303 can be ensured.

[0054] Figure 4 Another exemplary connection between a liquid chamber and the body of a breathing ventilation device according to some embodiments of this disclosure is shown. Figure 4 As shown, the liquid chamber 2403 may include a housing 2401 and a lid 2402. A connector 2301 may be configured to provide a sealing connection between a portion of the housing 2401 and the body of the breathing ventilation device 110. In some embodiments, the connector 2301 may not directly contact the lid 2402. Therefore, the state of the lid 2402 (open or closed) may not affect the connection between the connector 2301 and the housing 2401. In some embodiments, the lid 2402 can be opened via a handle 2404. The handle 2404 may have one or more notches that facilitate operation. In some embodiments, the lid 2402 may be a sliding cover. In some embodiments, the lid 2402 may slide horizontally or at an angle (e.g., 10 degrees, 20 degrees, 30 degrees, etc.) relative to the horizontal. In some embodiments, in order to ensure a sealed connection between the housing 2401 and the cover 2402, the junction 2405 of the housing 2401 and the cover 2402 may be equipped with a sealing material (or elastic material) including, for example, silicone resin.

[0055] Figure 5 Exemplary connectors for attachment to the body of a respiratory ventilation device according to some embodiments of the present disclosure are shown. In some embodiments, such as Figure 5As shown, a protruding platform 2501 can be provided at the gas outlet of the noise reduction tank (e.g., the noise reduction tank 801) or in the gas passage between the gas outlet of the noise reduction tank and the connector 2301. In some embodiments, the protruding platform 2501 can include a gas passage corresponding to the gas outlet. In some embodiments, the gas passage between the gas outlet of the noise reduction tank and the connector 2301 can form a chamber 2502. The chamber 2502 can include a bottom surface. In some embodiments, if the gas outlet of the protruding platform 2501 is along a vertical direction, the upper edge of the protruding platform 2501 can be disposed higher than the bottom surface of the chamber 2502. In some embodiments, if the gas outlet of the protruding platform 2501 is along a horizontal direction, the lower edge of the gas passage in the protruding platform 2501 can be disposed higher than the bottom surface of the chamber 2502. In some cases, if the respiratory ventilation device 110 is placed in an inclined manner (i.e., the liquid chamber is placed in an inclined manner), a certain amount of liquid in the liquid chamber (e.g., the liquid chamber 1704, the liquid chamber 2403) can accidentally flow out of the liquid chamber and / or the connector 2301 via the gas inlet (e.g., the gas inlet 2309) and / or the gas outlet (e.g., the gas outlet 2310) of the liquid chamber and into the chamber 2502 of the main body of the respiratory ventilation device 110. In some embodiments, the protruding platform 2501 can prevent the liquid from entering or reaching the internal space of the main body of the respiratory ventilation device, the detection module 250, the noise reduction assembly 240, and / or the gas pressurizing unit 210.

[0056] In some embodiments, the protruding platform 2501 can be fixed to the gas outlet of the noise reduction assembly 240, the gas pressurizing unit 210, or can be fixed in the chamber 2502. In some embodiments, the protruding platform 2501 can be detachably connected with the gas outlet of the noise reduction assembly 240, the gas pressurizing unit 210, or the chamber 2502 through a detachable connection structure (e.g., a threaded structure, a slot structure, or a snap joint structure, etc., or any combination thereof).

[0057] Figures 6A-6C An exemplary connection between the main body of the respiratory ventilation device and the liquid chamber according to some embodiments of the present disclosure is shown. The connector 2601 can be configured to provide a sealed connection between the tank cover 2603 and the main body 2602 of the respiratory ventilation device 110. 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 the gas outlet of the main body 2602. The hollow hole of the second threaded hose 2601b can form the gas inlet of the main body 2602. In some embodiments, the first threaded hose 2601a and / or the second threaded hose 2601b can be made of an elastic material, including, for example, an elastomer, rubber (e.g., silicone), etc., or a combination thereof.

[0058] In some embodiments, the lid 2603 of the liquid chamber can include a connection plate 2606 equipped with a gas inlet 2604 and / or a gas outlet 2605 of the lid 2603. The gas outlet of the main body 2602 can correspond to the gas inlet 2604 of the lid 2603. The gas inlet of the main body 2602 can correspond to the gas outlet 2605 of the lid 2603. In some embodiments, as shown, the hollow holes of the first threaded hose 2601a and the second threaded hose 2601b of the connection piece 2601 can be disposed substantially vertically at the first interface between the main body 2602 of the respiratory ventilation apparatus 110 and the liquid chamber. Accordingly, the connection plate 2606 can be disposed substantially horizontally on the lid 2603. Thus, if the lid 2603 is closed, a sealed connection between the main body 2602 of the respiratory ventilation apparatus 110 and the liquid chamber can be formed through the connection piece 2601. Figure 6A

[0059] Figure 8A and 8B An exemplary lid is shown according to some embodiments of the present disclosure. In some embodiments, as shown, Figure 8A and 8B The lid 3700 can include a lid shell 3710, a connection plate 3720, an inner shell 3730, a gas passage sealing frame 3740, a bottom plate 3750, a fixing frame 3760, and a lid sealing frame 3770. In some embodiments, the connection plate 3720 can include a first hole 3721 and a second hole 3722. In some embodiments, the first hole 3721 can be a gas inlet (also referred to as a humidification assembly gas inlet) of the lid 3700. In some embodiments, the second hole 3722 can be a gas outlet (also referred to as a humidification assembly gas outlet) of the lid 3700. In some embodiments, the connection plate 3720 can be disposed obliquely outside the lid shell 3710.

[0060] Figure 9 An exemplary cover shell is shown according to some embodiments of the present disclosure. In some embodiments, as shown, Figure 9 ​As shown, the lid shell 3710 can include a first hole 3711, a second hole 3712, a connection frame 3713, a baffle 3714, one or more first snaps 3715, and one or more second snaps 3716. The first hole 3711 and the first hole 3721 of the connection plate 3720 can be used as a gas inlet of the lid 3700. The second hole 3712 and the second hole 3722 of the connection plate 3720 can be used as a gas outlet of the lid 3700. The connection plate 3720 can be connected (e.g., fixed) to the connection frame 3713. In some embodiments, the connection plate 3720 can be connected to the connection frame 3713 by adhesion, riveting, mortising, clamping, meshing, or any combination thereof. The baffle 3714 can be used to separate the gas inlet and the gas outlet of the lid 3700 between the lid shell 3710 and the connection plate 3720, such that the breathing gas flowing into the lid 3700 can be isolated from the breathing gas flowing out of the lid 3700.

[0061] In some embodiments, a sealing strip (not shown) can be used to improve the air tightness of the connection between the connection frame 3713 and the connection plate 3720. For example, all the joints between the connection frame 3713 and the connection plate 3720 can be equipped with a sealing strip. In some embodiments, a sealing strip (not shown) can be provided at the joint between the baffle 3714 and the connection plate 3720. In some embodiments, as shown, a first groove 37215 and / or a second groove 37225 can be provided between the lid shell 3710 and the connection plate 3720. The first groove 37215 and / or the second groove 37225 can be used to accommodate a portion of liquid leaked from the tank (e.g., the tank 3300 shown in Figure 8A Figure 7A and 7B As shown, the first groove 37215 and / or the second groove 37225 can be used to accommodate a portion of liquid leaked from the tank (e.g., the tank 3300 shown in Figure 7A and 7B If the liquid chamber (e.g., the liquid chamber 3600 shown in

[0062] ​In some embodiments, the bottom plate 3750 can be secured to the inner shell 3730 by adhesion, riveting, doweling, clamping, meshing, or the like, or any combination thereof. In some embodiments, the bottom plate 3750 and the inner shell 3730 can be configured as a monolithic piece. In some embodiments, the first hooks 3715 can be used to secure the inner shell 3730 and the bottom plate 3750 to the lid shell 3710. For example, the inner shell 3730 and the bottom plate 3750 can be clamped to the lid shell 3710 by the first hooks 3715. In some embodiments, the first hooks 3715 can be disposed in the middle of the inner side walls of the lid shell 3710 opposite the connecting frame 3713. In some embodiments, the second hooks 3716 can be used to secure the securing frame 3760 to the lid shell 3710. In some embodiments, a plurality (e.g., 4, 6, 8, etc.) of the second hooks 3716 can be disposed at the inner side walls of the lid shell 3710 to secure the securing frame 3760 to the lid shell 3710. For example, as shown in FIG. 37A, each of the two side walls of the lid shell 3710 adjacent to the connecting frame 3713 can include three second hooks 3716. In some embodiments, the lid seal frame 3770 can be secured to the securing frame 3760. In some embodiments, the securing frame 3760 and the lid seal frame 3770 can be connected by adhesion, clamping, meshing, or the like, or any combination thereof. The lid seal frame 3770 can be used to improve the air tightness of the connection between the tank (e.g., the tank 3300 shown in FIGS. 33A-33B and 34A-34B) and the tank lid 3700. In some embodiments, the lid seal frame 3770 can be made of a sealing material including, for example, silicone, rubber, nylon, or the like, or any combination thereof. In some embodiments, some or all of the components (e.g., the first holes 3711, the second holes 3712, the connecting frame 3713, the baffles 3714, the first hooks 3715, and / or the second hooks 3716) of the lid shell 3710 can be configured as a monolithic piece. Figure 9 Figure 7A 7B In some embodiments, the lid seal frame 3770 can be secured to the securing frame 3760 by adhesion, riveting, doweling, clamping, meshing, or the like, or any combination thereof. In some embodiments, the securing frame 3760 and the lid seal frame 3770 can be configured as a monolithic piece.

[0063] ​​In some embodiments, the cover 3710 may be connected to and / or be able to be connected to the housing and / or the lid 3700. In some embodiments, the cover 3710 may be pivotally disposed relative to the housing. In some embodiments, the liquid contact sidewall of the liquid chamber may be formed at least partially through the outer sidewall of the housing forming the outer surface of the humidification assembly 220. In some embodiments, the housing may have only one opening for filling liquid and / or for replacing pressurized breathing gas. In some embodiments, the lid 3700 may be pivotally connected to the housing via a connecting mechanism. In some embodiments, at least a portion of the side of the first gas passage near the connecting mechanism may be covered 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 passage near the connecting mechanism may 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 may be less than the distance between the connecting mechanism and the humidification assembly gas inlet.

[0064] In some implementations, such as Figure 10B As shown, a portion or all of the base plate 3750 may be positioned below the lower edge of the gas inlet 37311 and / or the lower edge of the gas outlet 37321 of the cover 3700. Therefore, the base plate 3750 can accommodate a portion of the liquid within the housing, and the height difference between the base plate 3750 and the lower edges of the gas inlet 37311 and / or the gas outlet 37321 prevents liquid from entering the body of the breathing ventilation device 110. In some embodiments, the inner shell 3730 may include one or more third hooks 3736. The third hooks 3736 may be used to connect the gas passage sealing frame 3740 to the inner shell 3730. Figure 10B As shown, the inner shell 3730 may include three hooks 3736, which may be equidistantly spaced on the bottom edge of the first side surface of the inner shell 3730.

[0065] Figure 11 An exemplary base plate of the inner shell of a box lid according to some embodiments of the present disclosure is shown. For example... Figure 11 As shown, the base plate 3750 may include one or more sealing strips 3752 disposed along the edge of the base plate 3750. The sealing strips 3752 may be used to improve the airtightness of the connection between the base plate 3750 and the inner shell 3730. In some embodiments, the base plate 3750 may include the bottom of a second gas passage (e.g., a second inclined plate 3751) and the bottom of a first gas passage (e.g., the remainder of the base plate 3750 excluding the second inclined plate 3751).

[0066] The preferred embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited thereto. Within the technical concept of the present application, various simple modifications can be made to the technical solutions of the present application, including that various specific technical features are combined in any suitable manner. In order to avoid unnecessary repetition, the present application does not further describe various possible combination manners. However, these simple modifications and combinations should also be regarded as disclosed by the present application, and all fall within the protection scope of the present application.

Claims

1. A humidification assembly configured to humidify pressurized breathing gas from a respiratory ventilation device, characterized in that, The humidification assembly comprises a liquid chamber configured to hold one or more liquids, wherein the liquid chamber comprises: a tank; a tank lid; a humidification assembly gas inlet configured to introduce pressurized breathing gas into the tank via a first gas passage, wherein the first gas passage comprises an outlet; a humidification assembly gas outlet configured to introduce humidified and pressurized breathing gas back into the main body of the respiratory ventilation device via a second gas passage, wherein the second gas passage comprises an inlet; the tank lid comprises a baffle for separating the humidification assembly gas inlet and the humidification assembly gas outlet such that breathing gas flowing into the tank lid can be isolated from breathing gas flowing out of the tank lid.

2. The humidifying assembly of claim 1, wherein, the tank lid further comprises: a lid shell; and a connection plate having a first aperture as the humidification assembly gas inlet and a second aperture as the humidification assembly gas outlet, the connection plate being disposed on a side of the lid shell facing the main body of the respiratory ventilation device, configured to allow a sealed connection between the liquid chamber and the main body of the respiratory ventilation device; wherein the baffle is for separating the humidification assembly gas inlet and the humidification assembly gas outlet between the lid shell and the connection plate.

3. The humidification assembly according to claim 2, wherein: the connection plate is disposed obliquely on an outer side of the lid shell; and / or a distance between a bottom end of the connection plate and the lid shell is less than a distance between a top end of the connection plate and the lid shell.

4. The humidifying assembly of claim 2, wherein, the baffle extends from a top end of the lid shell towards the tank; and / or the baffle is located on a side of the connection plate facing away from the main body of the respiratory ventilation device and engages with the connection plate.

5. The humidifying assembly of claim 2, wherein, a seal is provided at an engagement of the baffle with the connection plate; and / or a seal is provided between the connection plate and a connection frame of the lid shell, wherein the connection plate and / or the baffle is connected to the connection frame.

6. The humidifying assembly of claim 2, wherein, the lid shell comprises the baffle, the lid shell being configured as a unitary piece.

7. The humidifying assembly of any one of claims 2-6, wherein, a recess is provided between the lid shell and the connection plate, the recess being for holding liquid and preventing liquid from entering the main body when the liquid chamber is tilted.

8. The humidifying assembly of any one of claims 1-6, wherein, the tank lid comprises a housing, the housing comprising an inner shell and a lid shell in a layered structure, the first gas passage and / or the second gas passage being formed with the housing.

9. The humidifying assembly of claim 8, wherein, the tank lid further comprises a bottom plate, wherein the bottom plate is fixed to the inner shell or the bottom plate and the inner shell are configured as a unitary piece to form the first gas passage and the second gas passage.

10. A respiratory ventilation apparatus, characterized by, a respiratory ventilation device configured to deliver breathing gas to a patient interface, comprising a main body and a liquid chamber according to any one of claims 1-9, the liquid chamber being disposed on the main body.

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