Anti-asphyxia assembly structure and sleep apnoea treatment apparatus

Abstract

This utility model relates to the technical field of sleep apnea treatment equipment, and discloses an anti-asphyxiation component structure and a sleep apnea treatment device. A valve plate mechanism is arranged on a bend and located in the airflow channel of the bend. An adaptive limiting seal structure is provided between the valve plate mechanism and the bend. The adaptive limiting seal structure is used to restrict the radial, axial, and circumferential movement of the embedded part of the valve plate mechanism and to achieve a seal between the embedded part of the valve plate mechanism and the bend. The valve plate part of the valve plate mechanism extends into the airflow channel and is used to undergo a combined change of axial bending and / or radial compression or return to the initial state according to the change of air pressure in the airflow channel, thereby realizing the switching between the closed and open states of the anti-asphyxiation valve. Through the coordinated cooperation of the adaptive limiting seal structure and the valve plate mechanism, adaptive sealing is achieved during the switching process between the closed and open states of the anti-asphyxiation valve.

Description

Technical Field

[0001] This utility model relates to the technical field of sleep apnea treatment devices, and in particular, to an anti-asphyxiation component structure. Furthermore, this utility model also relates to a sleep apnea treatment device including the aforementioned anti-asphyxiation component structure. Background Technology

[0002] Sleep apnea treatment devices (such as ventilators) typically provide continuous positive airway pressure (CPAP) to users through a face mask. The anti-asphyxiation valve is a key component of the ventilator mask. Its function is to automatically open when the device cannot provide sufficient pressure, allowing the inside of the mask to connect with the atmosphere and preventing the user from experiencing hypoxia or suffocation due to repeated breathing. During normal device operation, the anti-asphyxiation valve must remain closed to ensure no gas leakage and maintain stable treatment pressure.

[0003] Currently, most anti-suffocation valves on the market adopt a structural design where the valve plate and valve seat planes collide and seal around the perimeter. The valve plate is usually made of an elastic material (such as silicone), relying on the elastic deformation of the material itself to achieve a seal. However, this design has the following problems:

[0004] 1. High opening and closing pressure: The opening / closing pressure of existing anti-asphyxiation valves is usually nominally ≥2cmH2O, and some products are even close to 4cmH2O (i.e., the minimum rated pressure critical value of the ventilator). Because it relies on the elastic deformation of the valve edge, the required pressure is large, resulting in low valve sensitivity and small margin, which may affect safety performance.

[0005] 2. Insufficient airtightness stability: During the operation of the ventilator, pressure fluctuations may cause insufficient friction between the valve plate and the valve seat, causing the valve plate to slip or warp at the edges, which in turn leads to local air leakage and affects the sealing effect.

[0006] 3. Poor long-term reliability: The valve plate is subject to periodic compression and environmental factors (such as ultraviolet radiation, oxidation, and humidity) over a long period of time, which can easily lead to aging and deformation, resulting in abnormal flatness. In this case, the valve plate requires greater pressure to seal, which may even exceed the minimum rated pressure of the ventilator (4cmH2O), causing the anti-asphyxiation valve to fail and posing a safety hazard.

[0007] 4. Structural design defects: The existing solution relies solely on the elastic deformation of the valve plate material to achieve sealing, without considering dynamic compensation when air pressure fluctuates, resulting in unstable sealing performance and susceptibility to external interference. Utility Model Content

[0008] This invention provides an anti-asphyxiation component structure and a sleep apnea treatment device, improving the safety of ventilator masks and user experience, and solving the technical problems of existing anti-asphyxiation valve structures in terms of airtightness, stability, long-term reliability and sensitivity.

[0009] According to one aspect of this utility model, an anti-suffocation component structure is provided, including a bent pipe and a valve plate mechanism. The valve plate mechanism is arranged on the bent pipe and located in the airflow channel of the bent pipe. An adaptive limiting seal structure is provided between the valve plate mechanism and the bent pipe. The adaptive limiting seal structure is used to limit the radial, axial, and circumferential movement of the embedded part of the valve plate mechanism and to achieve a seal between the embedded part of the valve plate mechanism and the bent pipe. The valve plate part of the valve plate mechanism extends into the airflow channel and is used to undergo a combined change of axial bending and / or radial compression or return to the initial state according to the change of air pressure in the airflow channel, thereby realizing the switching between the closed and open states of the anti-suffocation valve. Through the coordinated cooperation of the adaptive limiting seal structure and the valve plate mechanism, adaptive sealing is achieved during the switching process between the closed and open states of the anti-suffocation valve.

[0010] Furthermore, the inner end wall of the valve opening of the anti-suffocation valve is either a concave curved surface or a concave straight surface.

[0011] Furthermore, the inner end of the valve opening of the anti-suffocation valve is provided with a baffle rib. The baffle rib is used to cooperate with the inner end wall of the valve opening of the anti-suffocation valve to support and fit the valve plate part of the valve plate mechanism, and also to prevent the valve plate part of the valve plate mechanism from flipping out through the valve opening. The baffle rib is a concave curved rib or a concave straight rib.

[0012] Furthermore, the shape of the valve plate portion of the valve plate mechanism in its initial state matches the inner cavity shape of the airflow passage; and / or the shape of the valve plate portion of the valve plate mechanism in its composite variation limit state matches the valve opening shape of the anti-suffocation valve.

[0013] Furthermore, the adaptive limiting seal structure includes a valve plate groove, a valve plate support rib, and a valve plate assembly groove. The valve plate groove and the valve plate support rib are located in the fixed part of the valve plate mechanism. The valve plate support rib is arranged in a ring along the circumference of the valve plate mechanism. Multiple valve plate support ribs are arranged at intervals along the axial direction of the valve plate mechanism. A valve plate groove is formed between two adjacent valve plate support ribs. The valve plate assembly groove is opened on the bend. The valve plate mechanism is fixedly connected to the valve plate assembly groove through the valve plate groove and the valve plate support rib is attached to both sides of the valve plate assembly groove to form a multi-stage interference fit connection structure, thereby realizing the adaptive limiting seal between the valve plate mechanism and the bend.

[0014] Furthermore, the valve plate assembly groove includes a bend limiting step and a bend limiting wall. The bend limiting wall is connected to the valve plate groove. The valve plate support rib at the outer end is embedded in the enclosed area between the bend limiting step and the bend limiting wall to achieve double embedding and fixing, thereby restricting the radial, axial and circumferential movement of the embedded part of the valve plate mechanism and achieving sealing between the embedded part of the valve plate mechanism and the bend.

[0015] Furthermore, the bend limiting wall and the valve plate groove are connected by a polygonal fit; and / or the valve plate support rib and the enclosing area are connected by a polygonal fit.

[0016] Furthermore, the first end of the bend is provided with a first buckle, and the bend is connected to the first limiting step of the pipe connector through the first buckle to form a first buckle connection assembly structure.

[0017] Furthermore, the second end of the bent tube is provided with a second buckle, and the bent tube is connected to the second limiting step of the cover through the second buckle to form a second buckle connection assembly structure.

[0018] According to another aspect of the present invention, a sleep apnea treatment device is also provided, which includes the above-described anti-asphyxiation component structure.

[0019] This utility model has the following beneficial effects:

[0020] 1. Improved airtightness stability: The adaptive limit sealing structure restricts the radial, axial and circumferential movement of the valve plate mechanism's embedded part, preventing the valve plate mechanism from slipping or warping when the air pressure fluctuates, thereby reducing the risk of local air leakage and ensuring reliable sealing of the anti-suffocation valve in the closed state.

[0021] 2. Reduce opening and closing pressure and improve sensitivity: The design of the valve plate allows it to undergo a combination of axial bending and / or radial compression deformation with changes in air pressure, thereby reducing the pressure threshold required for the valve plate to open / close, improving response sensitivity, and ensuring timely ventilation when the ventilator pressure is insufficient.

[0022] 3. Enhanced long-term reliability: The adaptive limiting seal structure constrains the embedded part of the valve plate mechanism, reducing the deformation of the valve plate caused by long-term use or environmental factors. Even if the valve plate material ages to a certain extent, it can still maintain stable sealing performance and reduce the risk of failure of the anti-suffocation valve.

[0023] 4. Adaptive Dynamic Sealing: The adaptive limiting sealing structure features an all-around limiting design for the embedded part, providing the valve plate with a stable and fixed positioning base. Utilizing the slight elastic deformation of the embedded part 201, combined with the composite deformation design of the valve plate, the valve plate can automatically adjust its deformation mode according to the air pressure changes in the airflow channel. This achieves dynamic adaptive sealing during the switching between closed and open states, and returns to its initial state in the open state and / or when the ventilator is off. This avoids sealing problems or abnormal leakage caused by pressure fluctuations. Furthermore, regardless of how the valve plate automatically adjusts its deformation mode with air pressure, it will not affect the sealing effect of the embedded part's position.

[0024] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0025] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0026] Figure 1 This is a schematic diagram of the structure of the anti-suffocation component according to a preferred embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the valve plate mechanism of a preferred embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the bent pipe according to a preferred embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the inner end of the valve opening in the bend of the preferred embodiment of this utility model;

[0030] Figure 5 This is a schematic cross-sectional view of the valve seat in the bend of the anti-suffocation valve of the preferred embodiment of the present invention, showing the valve seat switching between the open and closed states.

[0031] Figure 6 This is a schematic diagram of the cross-sectional structure of the retaining rib at the concave curved surface valve seat of the bend in the anti-suffocation valve of the preferred embodiment of the present invention, where the valve seat switches between the open and closed states.

[0032] Figure 7 This is a schematic diagram of the structure of the cover body according to a preferred embodiment of the present utility model;

[0033] Figure 8 This is a schematic diagram of the pipe connector of a preferred embodiment of the present invention;

[0034] Figure 9 This is a preferred embodiment of the present utility model. Figure 5 When the bend is flat, the pressure of 3cmH2O (300Pa) should be simulated according to the simulation diagram.

[0035] Figure 10 This is a preferred embodiment of the present utility model. Figure 6 Simulation diagram of stress under 3cmH2O (300Pa) pressure when the inner concave surface of the bend is shown.

[0036] Legend:

[0037] 100. Bend; 101. First snap-fit; 102. Second snap-fit; 200. Valve plate mechanism; 201. Embedded part; 202. Valve plate part; 300. Adaptive limiting sealing structure; 301. Valve plate groove; 302. Valve plate support rib; 303. Valve plate assembly groove; 3031. Bend limiting step; 3032. Bend limiting wall; 400. Valve opening; 401. Inner end wall; 402. Retaining rib; 403. Valve seat; 500. Pipe connector; 501. First limiting step; 600. Cover; 601. Second limiting step. Detailed Implementation

[0038] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0039] Figure 1 This is a schematic diagram of the structure of the anti-suffocation component according to a preferred embodiment of the present invention; Figure 2 This is a schematic diagram of the valve plate mechanism of a preferred embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the bent pipe according to a preferred embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the inner end of the valve opening in the bend of the preferred embodiment of this utility model; Figure 5 This is a schematic cross-sectional view of the valve seat in the bend of the anti-suffocation valve of the preferred embodiment of the present invention, showing the valve seat switching between the open and closed states. Figure 6 This is a schematic diagram of the cross-sectional structure of the retaining rib at the concave curved surface valve seat of the bend in the anti-suffocation valve of the preferred embodiment of the present invention, where the valve seat switches between the open and closed states. Figure 7 This is a schematic diagram of the structure of the cover body according to a preferred embodiment of the present utility model; Figure 8 This is a schematic diagram of the pipe connector of a preferred embodiment of the present invention; Figure 9 This is a preferred embodiment of the present utility model. Figure 5 When the bend is flat, the pressure of 3cmH2O (300Pa) should be simulated according to the simulation diagram. Figure 10 This is a preferred embodiment of the present utility model. Figure 6 Simulation diagram of stress under 3cmH2O (300Pa) pressure when the inner concave surface of the bend is shown.

[0040] like Figure 1As shown, the anti-suffocation component structure of this embodiment includes a bend 100 and a valve plate mechanism 200. The valve plate mechanism 200 is arranged on the bend 100 and located in the airflow passage of the bend 100. An adaptive limiting seal structure 300 is provided between the valve plate mechanism 200 and the bend 100. The adaptive limiting seal structure 300 is used to limit the radial, axial, and circumferential movement of the fixing part 201 of the valve plate mechanism 200 and to achieve a seal between the fixing part 201 of the valve plate mechanism 200 and the bend 100. The valve plate part 202 of the valve plate mechanism 200 extends into the airflow passage and is arranged to undergo a combined change of axial bending and / or radial compression or return to the initial state as the air pressure value in the airflow passage changes, thereby realizing the switching between the closed and open states of the anti-suffocation valve. Through the cooperative cooperation of the adaptive limiting seal structure 300 and the valve plate mechanism 200, adaptive sealing is achieved during the switching process between the closed and open states of the anti-suffocation valve. This utility model's anti-asphyxiation component structure, through the coordinated operation of an adaptive limiting seal structure 300 and a valve plate mechanism 200, restricts the radial, axial, and circumferential movement of the locking portion 201 of the valve plate mechanism 200. This prevents the valve plate mechanism 200 from slipping or warping during air pressure fluctuations, thereby reducing the risk of localized leakage and ensuring reliable sealing of the anti-asphyxiation valve in the closed state. The design of the valve plate portion 202 allows it to undergo combined deformation of axial bending and / or radial compression with changes in air pressure, thereby reducing the pressure threshold required for valve opening / closing, improving response sensitivity, and ensuring timely ventilation activation when ventilator pressure is insufficient. The adaptive limiting seal structure 300 constrains the locking portion 201 of the valve plate mechanism 200, reducing the risk of valve plate slippage due to long-term use or environmental factors. Despite deformation, even with some aging of the valve plate material, stable sealing performance is maintained, reducing the risk of asphyxiation valve failure. The adaptive limiting sealing structure 300, with its all-around limiting design for the embedded part 201, provides a stable and fixed positioning foundation for the valve plate part 202. Utilizing the slight elastic deformation of the embedded part 201, combined with the composite deformation design of the valve plate part 202, the valve plate part 202 can automatically adjust its deformation mode according to changes in air pressure within the airflow channel. This achieves dynamic adaptive sealing during the switching between closed and open states, and returns to its initial state in the open state and / or when the ventilator is off, avoiding sealing problems or abnormal leaks caused by pressure fluctuations. Furthermore, regardless of how the valve plate part 202 automatically adjusts its deformation mode with air pressure, the sealing effect of the embedded part 201 remains unaffected. This utility model's anti-asphyxiation component structure optimizes the structural design of the anti-asphyxiation valve, improving its sensitivity, stability, and durability while ensuring sealing reliability, thereby effectively enhancing the safety of the ventilator mask and the user experience. Optionally, the valve plate mechanism 200 adopts a silicone body structure.Optionally, by controlling the thickness of the valve plate portion 202 of the valve plate mechanism 200, it can be made to undergo a combined change of axial bending and / or radial compression with changes in air pressure in the airflow channel, or return to its initial state, thereby achieving the switching between the closed and open states of the anti-suffocation valve. Optionally, the thickness of the valve plate portion 202 is uniform. Optionally, the anti-suffocation valve includes a valve seat 403 on the bend 100, an anti-suffocation valve hole (valve opening 400) on the bend 100, an anti-suffocation valve plate mounting hole on the bend 100, and a valve plate mechanism 200; by the valve plate mechanism 200 changing with the air pressure in the airflow channel, it can be reset to the airflow channel or cover the anti-suffocation valve hole, thereby achieving the opening and closing of the anti-suffocation valve.

[0041] like Figure 2 and Figure 3As shown, in this embodiment, the adaptive limiting seal structure 300 includes a valve plate groove 301, a valve plate support rib 302, and a valve plate assembly groove 303. The valve plate groove 301 and the valve plate support rib 302 are located in the embedded part 201 of the valve plate mechanism 200. The valve plate support rib 302 is arranged in a ring along the circumference of the valve plate mechanism 200. Multiple valve plate support ribs 302 are arranged at intervals along the axial direction of the valve plate mechanism 200. A valve plate groove 301 is formed between two adjacent valve plate support ribs 302. The valve plate assembly groove 303 is opened on the bend 100. The valve plate mechanism 200 is fixedly connected to the valve plate assembly groove 301 and the valve plate assembly groove 303, and the valve plate support rib 302 is attached to both sides of the valve plate assembly groove 303 to form a multi-level interference fit connection structure, thereby realizing the adaptive limiting seal between the valve plate mechanism 200 and the bend 100. The valve plate support ribs 302 are arranged in a ring around the circumference and spaced axially, forming a multi-level interference fit connection structure with the valve plate assembly groove 303. The multi-point contact pressure distribution significantly improves the sealing reliability and effectively prevents gas leakage. The valve plate groove 301 formed between adjacent support ribs is fixedly connected to the valve plate assembly groove 303, realizing multiple restrictions of groove fixing and double-sided clamping. This constrains the fixing part 201 of the valve plate mechanism 200 in the radial, axial and circumferential directions, completely avoiding the displacement risk of the valve plate part 202 under air pressure fluctuations or mechanical vibration. The interference fit design between the valve plate support rib 302 and the valve plate assembly groove 303 ensures both robust assembly and ease of production, reducing manufacturing costs while guaranteeing precise positioning between components. The multi-stage support structure disperses stress distribution, preventing material fatigue caused by localized stress concentration and significantly extending the service life of the valve plate mechanism 200. While ensuring the absolute fixation of the embedded part 201, it provides a reliable foundation for the free deformation of the valve plate part 202, enabling the valve plate part 202 to respond sensitively to changes in air pressure without affecting the sealing effect of the embedded part 201. Through the multi-stage interference sealing structure, high sealing performance is ensured while also possessing excellent mechanical stability and durability, significantly improving the overall performance of the anti-suffocation valve. Optionally, the outer diameters of the multiple valve plate support ribs 302 are arranged in a gradually decreasing manner to facilitate the assembly of the valve plate mechanism 200. That is, the valve plate mechanism 200 is first inserted into the valve plate assembly groove 303 by one end of the valve plate support rib 302 with the smaller diameter, thereby realizing the assembly of the valve plate mechanism 200 onto the bend 100 and fixing the valve plate groove 301 into the valve plate assembly groove 303. Optionally, the outer edge of the valve plate support rib 302 arranged near the valve plate part 202 is tapered. When the valve plate support rib 302 passes through the valve plate assembly groove 303, the tapered surface contacts the valve plate assembly groove 303, and then the tapered surface slides over the valve plate assembly groove 303 to achieve the fixing of the valve plate groove 301 into the valve plate assembly groove 303.

[0042] like Figure 2 , Figure 3 and Figure 4As shown, in this embodiment, the shape of the valve plate portion 202 of the valve plate mechanism 200 in its initial state matches the shape of the inner cavity of the airflow channel; and / or the shape of the valve plate portion 202 of the valve plate mechanism 200 in its composite change limit state matches the shape of the valve opening 400 of the anti-asphyxiation valve. Through the specific structural design of the valve plate portion 202, it achieves precise matching with relevant structures under different working states. When the ventilator stops supplying air, the valve plate portion 202 automatically returns to its initial state, its shape matching the inner cavity of the airflow channel, thereby sealing the airflow channel and simultaneously opening the anti-asphyxiation valve to connect the mask to the atmosphere, effectively preventing the risk of hypoxia or suffocation caused by repeated breathing. When the ventilator is working normally, the airflow pressure pushes the valve plate portion 202 to deform to its limit state. Utilizing the matching shape, the valve plate portion 202 precisely fits the inner end face of the valve opening 400, thus... By closing the anti-asphyxiation valve, gas leakage is prevented, ensuring stable treatment pressure and reducing operating noise. The dual-matching design of the valve plate 202 ensures precise positioning in both open and closed states, with sensitive action response, avoiding sealing problems caused by intermediate states. This allows the valve plate 202 to adaptively and accurately switch operating states according to gas pressure changes, without the need for additional control mechanisms, ensuring both safety and treatment effectiveness. Through precise state matching control, the risk of asphyxiation is avoided, and noise interference caused by gas leakage is prevented, significantly improving user comfort. This adaptive matching structural design achieves the dual functions of safety protection and operational sealing of the anti-asphyxiation valve, ensuring both treatment effectiveness and operational safety.

[0043] like Figure 4 , Figure 5 and Figure 6As shown, in this embodiment, the inner end wall 401 of the valve opening 400 of the anti-asphyxiation valve is a concave curved surface or a concave straight surface of a bend. Optionally, the inner end wall 401 of the valve opening 400 of the anti-asphyxiation valve can also be a convex curved surface or a convex straight surface of a bend. The concave curved surface or concave straight surface design can guide the airflow to transition smoothly, reduce turbulence and pressure loss, and improve the efficiency of ventilator treatment. The shape of the inner end wall 401 matches the composite deformation characteristics of the valve plate portion 202, ensuring that the valve plate is tightly fitted to the wall in the closed state, avoiding local air leakage, and improving the sealing stability of the anti-asphyxiation valve. The curved surface design (especially the concave curved surface) can reduce the frictional resistance of the valve plate portion 202 during movement, making the valve plate portion 202 more responsive, reducing the pressure threshold required for opening / closing, and improving safety performance. A reasonable wall shape can reduce stress concentration in the valve plate portion 202 during repeated opening and closing, avoid material fatigue damage, and improve the durability and long-term reliability of the valve plate. Multiple wall shape designs are available to suit various application requirements. For example, a concave structure is suitable for high-flow scenarios to reduce airflow resistance. By optimizing the shape of the inner end wall 401 of the valve opening 400, airflow efficiency, sealing performance, and service life are further improved while ensuring the basic functions of the anti-suffocation valve, making the product safer and more reliable. Optionally, the valve opening 400 is located on the valve seat 403 of the anti-suffocation valve; the aforementioned concave-convex relationship is relative to the inner end face of the valve seat 403.

[0044] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, in this embodiment, a baffle 402 is provided at the inner end of the valve opening 400 of the anti-suffocation valve. The baffle 402 is used to cooperate with the inner end wall 401 of the valve opening 400 of the anti-suffocation valve to support and fit the valve plate portion 202 of the valve plate mechanism 200, and also to prevent the valve plate portion 202 of the valve plate mechanism 200 from flipping out through the valve opening 400. The baffle 402 is a concave curved rib or a concave straight rib of a bend. Optionally, the baffle 402 can also be a convex curved rib or a convex straight rib of a bend. The baffle 402 and the inner end wall 401 form a cooperative support structure, which not only ensures the accurate positioning and stable fit of the valve plate 202 in the closed state, but also effectively prevents the valve plate from being excessively deformed or flipped out of the valve opening 400 under the impact of airflow, thus improving structural reliability. The curved or straight rib design of the baffle 402 matches the deformation characteristics of the valve plate 202, forming a multi-line contact seal in the closed state, significantly improving airtightness and avoiding minor leakage caused by pressure fluctuations. The concave baffle can guide the airflow to pass smoothly, reducing turbulence and pressure loss. The baffle 402 disperses the force on the valve plate 202, avoiding local stress concentration, while limiting the maximum deformation of the valve plate 202, preventing plastic deformation or fatigue damage caused by excessive stretching of the material, thereby extending the service life. Optionally, the selection of the baffle 402 can be matched with the selection of the inner end wall 401 of the valve opening 400 of the anti-suffocation valve; for example, the inner end wall 401 is a concave curved surface of a bend and the baffle 402 is a concave curved surface of a bend to match, the inner end wall 401 is a concave straight surface of a bend and the baffle 402 is a concave straight surface of a bend to match, and so on; through this matching, a coordinated and unified support surface is achieved, thereby better achieving a tight seal with the valve plate 202 and avoiding the adverse consequences of gas leakage.

[0045] like Figure 1 , Figure 2 and Figure 3As shown, in this embodiment, the valve plate assembly groove 303 includes a bend limiting step 3031 and a bend limiting wall 3032. The bend limiting wall 3032 is connected to the valve plate groove 301. The valve plate support rib 302 at the outer end is embedded in the enclosed area between the bend limiting step 3031 and the bend limiting wall 3032 to achieve double embedding and fixing, thereby restricting the radial, axial and circumferential movement of the embedding part 201 of the valve plate mechanism 200 and achieving a seal between the embedding part 201 of the valve plate mechanism 200 and the bend 100. The bend-end limiting wall 3032 is connected to the valve plate groove 301, while the outer valve plate support rib 302 is embedded in the enclosed area between the bend-end limiting step 3031 and the bend-end limiting wall 3032, forming a double-embedded fixed position structure. This structure comprehensively restricts the radial, axial, and circumferential movement of the valve plate mechanism 200's fixed part 201, ensuring that the valve plate does not shift under pressure fluctuations or mechanical vibrations. The double-embedded fixed position design creates multiple contact sealing surfaces between the valve plate mechanism 200's fixed part 201 and the bend 100, significantly improving sealing performance, effectively preventing gas leakage, and ensuring the stability of the ventilator's treatment pressure. The synergistic effect of step 3031 and bend-limiting wall 3032 provides a stable installation foundation for valve plate mechanism 200, preventing loosening of the connection due to long-term use or external interference, and improving the overall structural durability. The double-embedded fixed position structure makes the installation position of valve plate mechanism 200 more precise, ensuring that the movement trajectory of valve plate part 202 in the airflow channel is controllable, avoiding problems such as poor sealing or stuck action due to assembly deviation. While strictly limiting the movement of the embedded part 201, it does not affect the free deformation capability of valve plate part 202, allowing it to still respond sensitively to changes in air pressure, realizing the reliable opening and closing of the anti-suffocation valve. Through the double-embedded fixed position structure, while ensuring the stable installation and reliable sealing of valve plate mechanism 200, dynamic response performance is also taken into account, significantly improving the working stability and service life of anti-suffocation valve.

[0046] like Figure 1 , Figure 2 and Figure 3As shown, in this embodiment, the bend limiting wall 3032 and the valve plate groove 301 are connected by a polygonal fit; and / or the valve plate support rib 302 and the enclosing area are connected by a polygonal fit. The polygonal fit structure effectively restricts the circumferential rotation of the valve plate mechanism 200, preventing the valve plate from unexpectedly deflecting under the impact of airflow or vibration, ensuring accurate alignment of the sealing surface, and improving sealing reliability; the mechanical interlocking effect formed by the polygonal edges significantly improves the connection strength between the embedded part 201 and the bend 100, avoiding loosening of the connection due to long-term use and extending service life; the polygonal structure has clear guidance, ensuring that the valve plate mechanism 200 can only be assembled at a preset angle, eliminating poor sealing problems caused by assembly deviations, and improving product consistency; the polygonal edges can evenly distribute contact stress, avoiding local stress concentration caused by circular fit, and reducing the risk of material fatigue; while strictly restricting the degree of rotational freedom, the polygonal structure still allows the valve plate part 202 to perform necessary axial displacement and deformation, ensuring that the normal opening and closing function of the anti-suffocation valve is not affected.

[0047] like Figure 1 , Figure 3 , Figure 4 and Figure 8 As shown, in this embodiment, the first end of the bend 100 is provided with a first buckle 101, and the bend 100 is connected to the first limiting step 501 of the pipe connector 500 through the first buckle 101, forming a first buckle 101 connection combination structure. The overlapping combination of the first snap-fit ​​101 and the first limiting step 501 achieves a "plug-in locking" assembly effect, enabling a secure connection without additional fasteners, significantly improving assembly efficiency and reducing production costs. The snap-fit ​​structure forms a mechanical interlock, effectively resisting axial separation caused by airflow pressure or external force pulling, ensuring the structural integrity of the pipeline connection under high-pressure conditions. The overlapping snap-fit ​​connection has a certain flexible buffer space, which can absorb mechanical vibration, avoid resonance noise and structural fatigue caused by rigid connections, and at the same time, the connection stability is higher, effectively avoiding the risk of loosening and gas leakage. The first limiting step 501 provides a precise axial positioning reference for the snap-fit ​​connection, ensuring the coaxiality of the bend 100 and the pipeline connector 500, thereby maintaining the sealing reliability of the connection interface. The snap-fit ​​structure supports non-destructive disassembly and assembly, facilitating quick disassembly and replacement of parts during later maintenance, while maintaining the original connection strength after repeated assembly.

[0048] like Figure 1 , Figure 3 , Figure 4 and Figure 7As shown, in this embodiment, the second end of the bent pipe 100 is provided with a second buckle 102, and the bent pipe 100 is connected to the second limiting step 601 of the cover 600 through the second buckle 102, forming a second buckle 102 connection combination structure. The overlapping combination of the second buckle 102 and the second limiting step 601 achieves a "plug-in locking" assembly effect, enabling a secure connection without additional fasteners, significantly improving assembly efficiency and reducing production costs. The buckle structure forms a mechanical interlock, effectively resisting axial separation caused by airflow pressure or external pulling, ensuring the stability of the connection between the bend 100 and the cover 600, and preventing accidental detachment from affecting the normal operation of the ventilator. The overlapping buckle connection has a certain flexible buffer space, which can absorb mechanical vibration during equipment operation, reduce connection loosening or noise problems caused by vibration, improve user comfort, and at the same time, the connection stability is higher, effectively avoiding the risk of loosening and gas leakage. The second limiting step 601 provides a precise axial positioning reference for the buckle connection, ensuring the coaxiality of the bend 100 and the cover 600, thereby maintaining the sealing reliability of the connection interface and preventing gas leakage. The buckle structure supports non-destructive disassembly and assembly, facilitating quick disassembly and replacement of parts during later maintenance, and maintaining the original connection strength after repeated assembly, extending the product's service life.

[0049] The sleep apnea treatment device of this embodiment includes the above-mentioned anti-asphyxiation component structure.

[0050] In practice, a self-compensating sealing anti-asphyxiation valve structure and a ventilator mask are provided. The valve mechanism 200 is designed with a valve groove 301 and a valve support rib 302. The bend 100 is designed with a bend limiting step 3031, a bend limiting wall 3032, a first latch 101, a second latch 102, a bend concave curved surface rib (resist rib 402), a bend concave curved surface (inner end wall 401), and a valve seat 403. The inward recessed depth of the bend concave curved surface rib (resist rib 402) is greater than the inward recessed depth of the bend concave curved surface (inner end wall 401), and the inward recessed dimension of the bend concave curved surface rib (resist rib 402) is 0.3 mm to 6 mm. More preferably, the inward recessed dimension of the bend concave curved surface rib (resist rib 402) is 0.3 mm to 2 mm.

[0051] like Figure 7 As shown, the cover 600 is designed with a cover limiting step (second limiting step 601). For example... Figure 8 As shown, the pipe connector 500 is designed with a limiting step (first limiting step 501).

[0052] The valve plate mechanism 200 is inserted into the bend 100, so that the valve plate groove 301 is embedded in the bend limiting step 3031. The valve plate support rib 302 is press-fitted with the bend limiting wall 3032, so that this assembly achieves an airtight effect. The second buckle 102 is placed on the mask limiting step (second limiting step 601) to form a buckle connection. The first buckle 101 is placed on the tubing connector limiting step (first limiting step 501) to form a buckle connection. At this time, the airway is formed, and the rubber head of the ventilator tubing can be connected to the tubing connector 500. The airflow passes sequentially through the ventilator tubing, the bend connector 500, the lower part of the bend, the valve plate mechanism 200, the upper part of the bend, the mask 600, and the oral and nasal cavities of the face.

[0053] As the ventilator outputs airflow, the pressure in the airway gradually increases, causing the anti-asphyxiation valve to open and the valve mechanism 200 to rise, from the " Figure 5 Left image or Figure 6 The left image shows the anti-suffocation valve changing from "open" to "open". Figure 5 Right image or Figure 6 The right figure shows the "anti-suffocation valve in the closed state". The valve plate part 202 of the valve plate mechanism 200 is a silicone sheet. Due to the air pressure in the air passage, the silicone sheet undergoes a combined deformation of axial bending and radial compression due to the geometric constraints of the concave curved surface (inner end wall 401) and the concave curved surface rib (resistance rib 402) of the bend, forming an airtight seal at the concave curved surface (inner end wall 401) of the bend. When the air pressure is high, the concave curved surface rib (resistance rib 402) of the bend can also prevent the silicone sheet from flipping out.

[0054] When the ventilator stops outputting airflow, from " Figure 5 Right image or Figure 6 The image on the right shows the anti-suffocation valve changing from "closed" to "closed". Figure 5 Left image or Figure 6 The left image shows the anti-suffocation valve in the open state. The silicone elasticity returns to its initial flat state, thus opening the anti-suffocation valve.

[0055] The mating surface between the control unique variable valve plate mechanism 200 and the valve seat 403 can be a flat surface or an inwardly concave curved surface.

[0056] In the physical comparison test, the opening and closing pressure of the anti-suffocation valve of the bend 100 was 1.6 cmH2O, while that of the bend 100 was 1.2 cmH2O, a reduction of 25%.

[0057] In simulation (e.g.) Figure 9 and Figure 10 As shown), when the same pressure of 3cmH2O (300Pa) is applied to the valve plate mechanism 200 (silicone sheet), the force transmitted to the airtight surface is compared. The flat surface of the mating surface is smaller than the concave curved surface of the mating surface. That is, the concave curved surface of the bend 100 has better airtightness.

[0058] The optional schemes for the mating surfaces of the valve plate mechanism 200 and the valve seat 403 are as follows: the concave curved surface and the concave curved surface rib of the bend can be replaced with: the concave straight surface and the concave straight surface rib of the bend, or the concave curved surface and the concave straight surface rib of the bend, or the concave straight surface and the concave curved surface rib of the bend.

[0059] The self-compensating sealing anti-asphyxiation valve structure (anti-asphyxiation component structure) and ventilator mask of this utility model have the following effects:

[0060] 1. When the air pressure fluctuates, the silicone sheet undergoes different degrees of combined deformation of axial bending and radial compression as the air pressure value changes. Through self-deformation compensation, the airtightness reaches a balance point.

[0061] 2. The valve plate has composite deformation properties, and its stiffness is converted into resistance to lateral slippage, avoiding the influence of air pressure fluctuations and improving structural stability.

[0062] 3. Breaking away from the traditional structure's reliance on high opening and closing pressures, compared to planar contact sealing solutions, the opening and closing pressure is reduced from 1.6 cmH2O to 1.2 cmH2O, a reduction of 25%. This is 40% lower than the market average of 2 cmH2O, resulting in lower opening and closing pressure, a larger margin, and greater valve switching sensitivity.

[0063] 4. Once the valve plate ages and deforms, becomes abnormally flat, or develops a concave curved surface structure, under air pressure loading, the silicone sheet undergoes a composite deformation of axial bending and radial compression through geometric constraints, automatically compensating for gaps, maintaining airtightness, and ensuring sufficient long-term reliability.

[0064] Any matters not covered in this utility model are common knowledge.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

[0067] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An anti-suffocation component structure, comprising a bend (100) and a valve plate mechanism (200), wherein the valve plate mechanism (200) is disposed on the bend (100) and located on the airflow channel of the bend (100), characterized in that, An adaptive limiting seal structure (300) is provided between the valve plate mechanism (200) and the bend (100). The adaptive limiting seal structure (300) is used to limit the radial, axial and circumferential movement of the locking part (201) of the valve plate mechanism (200) and to achieve a seal between the locking part (201) of the valve plate mechanism (200) and the bend (100). The valve plate part (202) of the valve plate mechanism (200) extends into the airflow passage and is arranged therein. The valve plate part (202) of the valve plate mechanism (200) is used to undergo a combined change of axial bending and / or radial compression as the air pressure value in the airflow passage changes, or to return to the initial state, thereby realizing the switching between the closed state and the open state of the anti-suffocation valve. Through the coordinated operation of the adaptive limit sealing structure (300) and the valve plate mechanism (200), adaptive sealing is achieved during the switching process between the closed and open states of the anti-suffocation valve.

2. The anti-asphyxia assembly structure of claim 1, wherein The inner end wall (401) of the valve opening (400) of the anti-suffocation valve is a concave curved surface or a concave straight surface.

3. The anti-asphyxia assembly structure of claim 2, wherein The valve opening (400) of the anti-suffocation valve is provided with a baffle (402) at the inner end. The baffle (402) is used to cooperate with the inner end wall (401) of the valve opening (400) of the anti-suffocation valve to support and fit the valve plate part (202) of the valve plate mechanism (200), and is also used to prevent the valve plate part (202) of the valve plate mechanism (200) from flipping out through the valve opening (400). The retaining rib (402) is a concave curved rib or a concave straight rib inside the bend.

4. The anti-asphyxia assembly structure of claim 1, wherein The shape of the valve plate portion (202) of the valve plate mechanism (200) in its initial state matches the inner cavity shape of the airflow passage; and / or The shape of the valve plate part (202) of the valve plate mechanism (200) in the state of compound change limit matches the shape of the valve opening (400) of the anti-suffocation valve.

5. The anti-asphyxia assembly structure of claim 1, wherein The adaptive limiting sealing structure (300) includes a valve plate groove (301), a valve plate support rib (302), and a valve plate assembly groove (303). The valve plate groove (301) and the valve plate support rib (302) are located in the fixed part (201) of the valve plate mechanism (200). The valve plate support rib (302) is arranged in a ring along the circumference of the valve plate mechanism (200). Multiple valve plate support ribs (302) are arranged at intervals along the axial direction of the valve plate mechanism (200). A valve plate groove (301) is formed between two adjacent valve plate support ribs (302). The valve plate assembly groove (303) is opened on the bend (100). The valve plate mechanism (200) is fixedly connected to the valve plate assembly groove (303) through the valve plate groove (301) and the valve plate support rib (302) is attached to both sides of the valve plate assembly groove (303) to form a multi-level interference fit connection structure, thereby realizing the adaptive limit sealing between the valve plate mechanism (200) and the bend (100).

6. The anti-suffocation component structure according to claim 5, characterized in that, The valve plate assembly groove (303) includes a bend limiting step (3031) and a bend limiting wall (3032). The bend limiting wall (3032) is connected to the valve plate groove (301). The valve plate support rib (302) at the outer end is embedded in the enclosed area between the bend limiting step (3031) and the bend limiting wall (3032) to achieve double embedding and fixing, thereby restricting the radial, axial and circumferential movement of the embedded part (201) of the valve plate mechanism (200) and achieving sealing between the embedded part (201) of the valve plate mechanism (200) and the bend (100).

7. The anti-asphyxia assembly structure of claim 6, wherein The bend limiting wall (3032) and the valve plate groove (301) are connected by a polygonal fit; and / or The valve plate support rib (302) is connected to the enclosed area using a polygonal fit.

8. The anti-asphyxia assembly structure according to any one of claims 1 to 7, characterized in that, The first end of the bend (100) is provided with a first buckle (101). The bend (100) is connected to the first limiting step (501) of the pipe connector (500) through the first buckle (101) to form a first buckle (101) connection combination structure.

9. An anti-asphyxia assembly structure according to any one of claims 1 to 7, characterized in that, The second end of the bend (100) is provided with a second buckle (102). The bend (100) is connected to the second limiting step (601) of the cover (600) through the second buckle (102) to form a second buckle (102) connection combination structure.

10. A sleep apnoea treatment apparatus characterised by The anti-suffocation component structure includes any one of claims 1 to 9.

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