A respiratory therapy system and method based on mask structure optimization

Abstract

This invention relates to the field of respiratory masks and discloses a respiratory therapy system and method based on mask structure optimization, including a respiratory therapy device and a mask body connected thereto. The mask body has an inlet pipe, an outlet pipe, and a liquid collection frame. A movable valve is installed inside the outlet pipe, and a flip-up liquid-blocking device is installed at the liquid inlet at the upper end of the liquid collection frame. The movable valve and the liquid-blocking device are connected by a linkage rod, and the liquid-blocking device is reset by a torsion spring. After the therapeutic gas enters the mask body through the inlet pipe, it is buffered and dispersed by an airflow buffering and guiding structure to reduce the direct impact of airflow on the patient's mouth and nose. Condensate or atomized residue formed during treatment can enter the liquid collection frame. When the patient exhales, the movable valve moves to the pressure relief position, allowing the exhaled gas to be discharged through the outlet pipe. Simultaneously, the linkage rod drives the liquid-blocking device to flip to the blocking position to block the liquid inlet and prevent the exhaled airflow from disturbing the liquid in the collection frame. After exhalation, the liquid-blocking device returns to the open position.

Description

Technical Field

[0001] This invention belongs to the technical field of respiratory masks, and more specifically, it relates to a respiratory therapy system and method based on mask structure optimization. Background Technology

[0002] Respiratory therapy systems are commonly used for oxygen therapy, humidified gas supply, nebulized therapy, or assisted ventilation. They generally consist of a respiratory therapy device and a mask connected to the device. During use, the device delivers oxygen, humidified gas, nebulized medication, or other therapeutic gases into the mask through an inlet tube. The patient inhales the gas by wearing the mask. The mask typically covers the patient's mouth and nose, creating a relatively closed breathing space to ensure a stable flow of therapeutic gases into the respiratory tract.

[0003] The existing technology for respiratory therapy masks still has the following drawbacks: In existing technologies, respiratory therapy masks typically deliver oxygen, humidifying gas, or nebulized medication directly into the mask via an inlet tube. Because the inlet path is relatively direct, the therapeutic gas entering the mask can easily create a localized high-speed airflow that directly impacts the patient's mouth and nose area, causing dryness, irritation, stuffiness, or discomfort. Simultaneously, uneven airflow diffusion within the mask can easily lead to unstable pressure distribution within the mask body, affecting the comfort and continuity of respiratory therapy.

[0004] In existing technologies, during continuous respiratory therapy, the warm, moist air exhaled by the patient easily condenses on the inner wall of the mask, forming droplets. In nebulizer therapy scenarios, some nebulized medication also tends to adhere to the inner wall of the mask, forming residual liquid. Existing masks have limited capacity to guide and remove these condensates or residual nebulized liquids, leading to disorderly accumulation of liquid in the lower part of the mask, near the mouth and nose, or in the collection area. This can cause liquid backflow, skin irritation, patient discomfort, and even affect the continuity of the treatment process.

[0005] In existing technologies, respiratory therapy masks typically have vents or pressure relief structures to expel exhaled air and reduce expiratory resistance. However, during expiratory pressure relief, the expelled airflow velocity is relatively high, which can easily enter or impact the liquid collection area at the bottom of the mask, causing the collected condensate or residual atomized liquid to slosh, splash, flow back, or undergo secondary atomization. This not only weakens the function of the liquid collection and drainage structure but may also cause liquid to re-enter the mask cavity, affecting patient comfort and the stability of respiratory therapy.

[0006] Therefore, in view of this, we will study and improve the existing structure and its shortcomings, and provide a respiratory therapy system and method based on mask structure optimization, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0007] This invention provides a respiratory therapy system and method based on mask structure optimization, which overcomes the above-mentioned defects in the prior art.

[0008] The purpose and efficacy of this invention, a respiratory therapy system and method based on mask structure optimization, are achieved through the following specific technical means: A respiratory therapy system based on mask structure optimization includes a respiratory therapy device and a mask body connected to the respiratory therapy device. The front end of the mask body is provided with an air inlet pipe, and each side of the mask body is provided with an exhaust pipe. The lower part of the mask body is provided with a liquid collection frame. The system also includes: A pressure relief assembly is disposed within the exhaust pipe, the pressure relief assembly including a movable valve that can move between a blocked position and a pressure relief position; A liquid-blocking component is provided at the liquid inlet at the upper end of the liquid collection frame, and can be flipped between the open position and the blocked position; A linkage rod is connected between the movable valve and the liquid-blocking component, so that when the movable valve moves to the pressure relief position, it drives the liquid-blocking component to flip to the blocking position; A torsion spring acts on the liquid-blocking component to reset it to the open position.

[0009] In this solution, the liquid inlet is blocked simultaneously during exhalation and depressurization by the coordinated action of the movable valve, the linkage rod, and the liquid blocking component. This prevents the exhaled airflow from entering the collection frame and disturbing the collected condensate or atomized residue. After exhalation, the liquid blocking component automatically resets, allowing the liquid inlet to reopen and thus restoring liquid drainage.

[0010] Preferably, the pressure relief assembly includes a mounting plate, which is fixedly disposed inside the exhaust pipe. A pressure relief pipe is fixedly disposed on the mounting plate. The movable valve is slidably disposed inside the pressure relief pipe and can block the pressure relief pipe at the blocking position and open the pressure relief pipe at the pressure relief position. The mounting plate is provided with a through port.

[0011] In this design, the pressure relief tube is fixed by the mounting plate, and the movable valve slides within the pressure relief tube, forming a relatively stable open-close pressure relief structure. This allows for timely pressure relief when the pressure inside the mask increases, reducing the patient's expiratory resistance and feeling of tightness.

[0012] Preferably, one end of the pressure relief pipe is provided with a tapered tube. When the movable valve is in the pressure relief position, part of the structure of the movable valve enters the tapered tube and forms an annular pressure relief gap with the tapered tube.

[0013] In this design, an annular pressure relief gap is formed between the tapered tube and the movable valve, which allows the exhaled gas to be discharged more evenly in the circumferential direction, reducing the impact of local high-speed airflow, improving the stability of the pressure relief process, and reducing exhaust noise and local airflow disturbance.

[0014] Preferably, the movable valve includes a movable valve plate, a pressure plate, a connecting rod, and an elastic element. The connecting rod connects the movable valve plate and the pressure plate, and the elastic element connects the pressure plate and the mounting plate. The pressure plate has a through hole for exhaled gas to pass through. The mounting plate has a safety vent hole that connects the interior of the mask body to the exhaust side of the exhaust pipe, and the opening area of ​​the safety vent hole is smaller than the maximum opening area of ​​the pressure relief pipe.

[0015] In this design, the movable valve plate, pressure plate, connecting rod, and elastic element work together to achieve pressure-triggered opening and automatic reset of the movable valve. The through-hole ensures that exhaled gas can enter the pressure relief path; the safety vent maintains basic exhaust when the pressure relief pipe is closed, reducing the risk of carbon dioxide retention, and also assists in exhaust when the pressure relief pipe is open.

[0016] Preferably, a rotating shaft is fixedly provided at the liquid inlet, the liquid-blocking component is rotatably disposed on the rotating shaft, the torsion spring is connected between the liquid-blocking component and the rotating shaft, and a blocking component is provided on one side of the liquid inlet; when the liquid-blocking component is in the open position, a liquid guiding gap is formed between the liquid-blocking component and the blocking component; when the liquid-blocking component is in the blocking position, the liquid-blocking component covers at least a portion of the area of ​​the liquid inlet.

[0017] In this design, a rotating shaft and a torsion spring enable the liquid-blocking component to reliably rotate between the open and blocked positions and automatically reset. The open position ensures that condensate or atomized residue enters the collection frame normally; the blocked position prevents exhaled airflow from entering the inlet, thereby reducing liquid splashing, backflow, or secondary disturbance.

[0018] Preferably, the liquid-blocking component has a blocking block at one end facing the shielding component, and the shielding component has a groove that cooperates with the blocking block. When the liquid-blocking component is in the shielding position, the blocking block enters the groove to reduce or close the airflow channel between the liquid-blocking component and the shielding component.

[0019] In this solution, the combination of the blocking block and the groove can further reduce or close the airflow channel between the liquid blocking component and the shielding component when the liquid blocking component is in the shielding position, thereby improving the shielding effect of the liquid blocking component on the liquid inlet and reducing the possibility of exhaled airflow entering the liquid collection frame.

[0020] Preferably, one end of the linkage rod is hinged to the movable valve, and the other end of the linkage rod is hinged to the side of the liquid baffle away from the rotating shaft.

[0021] In this solution, by hinged the linkage rod to the side of the liquid-blocking component away from the rotating shaft, the reliability of the linkage rod driving the liquid-blocking component to flip can be improved, and the movement of the movable valve component can be effectively converted into the flipping action of the liquid-blocking component, thereby ensuring that the exhalation pressure relief and the liquid inlet blocking occur simultaneously.

[0022] Preferably, a first limiting member and a second limiting member are provided on the other side of the liquid inlet, and a rubber part is provided on the liquid blocking member, the rubber part being provided with a guide hole; when the liquid blocking member is in the open position, the rubber part cooperates with the first limiting member to block the guide hole; when the liquid blocking member is in the blocked position, the rubber part disengages from the first limiting member, allowing the guide hole to communicate with the interior of the liquid collection frame.

[0023] In this solution, the cooperation of the rubber parts, the first limiting part, the second limiting part and the guide hole allows a small amount of liquid to enter the liquid collection frame even when the liquid blocking part is in the blocking position, thus preventing excessive accumulation of liquid above the liquid inlet; at the same time, the guide hole is blocked in the open position, so that the liquid mainly enters the liquid collection frame through the liquid guiding gap, improving the orderliness of the guide path.

[0024] Preferably, the mask body is provided with an airflow buffer and guiding structure, the airflow buffer and guiding structure includes a buffer cavity communicating with the air inlet pipe, a guide plate disposed downstream of the buffer cavity, a guide channel extending along the inner wall of the mask body, and multiple dispersed air outlets; the liquid collection frame is provided with multiple pairs of vertically staggered guide members, and the multiple pairs of guide members form a deflection and liquid guiding path in the liquid collection frame.

[0025] A respiratory therapy method based on mask structure optimization includes the following steps: S1: Therapeutic gas buffer introduction step: The respiratory therapy device delivers therapeutic gas to the mask body. The therapeutic gas enters the airflow buffer guide structure inside the mask body through the air inlet tube. The therapeutic gas is slowed down in the airflow buffer guide structure and dispersed into the patient's mouth and nose area through the guide plate, guide channel and multiple dispersion outlets in the airflow buffer guide structure. S2: Condensate and residual nebulizer liquid drainage steps. During respiratory therapy, the patient's exhaled hot and humid air or the residual nebulizer liquid produced by nebulizer therapy forms droplets on the inner wall of the mask body. The droplets flow to the lower part of the mask body under the action of gravity and collect at the inlet of the collection frame. S3: During the normal liquid guiding process, when the mask body pressure has not reached the pressure relief trigger range during the inhalation phase, the liquid blocking component remains in the open position under the action of the torsion spring; at this time, the liquid inlet of the liquid collection frame is open, and condensate or atomized residual liquid can enter the liquid collection frame. S4: Expiratory pressure triggers the pressure relief step. When the patient exhales, the pressure inside the mask increases. This pressure acts on the movable valve, causing it to move from the blocked position to the pressure relief position, thereby opening the pressure relief tube. Exhaled gas is discharged through the exhaust tube. S5: Linkage liquid blocking step. While the moving valve moves, the linkage lever drives the liquid blocking component to rotate around the pivot, so that the liquid blocking component rotates from the open position to the blocked position. When the liquid blocking component is in the blocked position, it blocks the liquid inlet of the liquid collection frame to prevent the exhaled pressure relief airflow from entering the liquid collection frame and prevent the collected liquid from being blown away, splashed, backflowed or atomized again. S6: Reset and restore the fluid delivery step. After the patient finishes exhaling, the pressure inside the mask body decreases; the movable valve resets, the linkage lever releases its pulling effect on the fluid blocking component, and the fluid blocking component resets to the open position under the action of the torsion spring; the fluid inlet of the collection frame reopens, and the condensate or atomized residual fluid continues to enter the collection frame, and the system enters the next respiratory cycle.

[0026] Compared with the prior art, the present invention has the following beneficial effects: This invention discloses a respiratory therapy system based on mask structure optimization. By setting a liquid collection frame at the lower part of the mask body and a liquid inlet at the upper end of the liquid collection frame, the condensate or atomized residue formed on the inner wall of the mask body can be collected into the liquid collection frame under the action of gravity. At the same time, by setting multiple pairs of vertically staggered guides in the liquid collection frame, the liquid entering the liquid collection frame is directed to flow downwards step by step along the deflection and guiding path, reducing the liquid falling speed, reducing liquid impact, shaking and backflow, and improving the collection stability of condensate or atomized residue.

[0027] This invention discloses a respiratory therapy system based on mask structure optimization. By incorporating a movable valve within the exhaust pipe, the valve moves from a blocked position to a pressure-relieving position during patient exhalation, opening the pressure-relieving tube and releasing exhaled gas, thereby reducing expiratory resistance and shortness of breath. Simultaneously, a linkage rod connects the movable valve to a liquid-blocking component. When the movable valve opens to relieve pressure, it simultaneously rotates the liquid-blocking component from the open position to the blocked position, blocking the liquid inlet and preventing high-speed expiratory airflow from entering the collection frame and disturbing the collected liquid. After exhalation, the liquid-blocking component returns to the open position under the action of a torsion spring, reopening the liquid inlet. This achieves a cyclical coordination between expiratory pressure relief, temporary liquid blocking, and continuous liquid drainage. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Figure 1 This is a schematic diagram of the first isometric structure of the present invention; Figure 2 This is a schematic diagram of the second isometric structure of the present invention; Figure 3 This is a schematic diagram of the first front view structure of the present invention; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at point AA; Figure 5 for Figure 4 A magnified schematic diagram of the local structure at point D; Figure 6 This is a schematic diagram of the second front view structure of the present invention; Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure at point BB; Figure 8 for Figure 7 A magnified schematic diagram of the local structure at point E; Figure 9 This is a schematic diagram of the left-side structure of the present invention; Figure 10 for Figure 9 Schematic diagram of the cross-sectional structure at the CC section; Figure 11 for Figure 10 A magnified view of the structure at point F in the middle.

[0031] Explanation of reference numerals in the attached figures: The mask body 10, air inlet pipe 11, exhaust pipe 12, liquid collection frame 13, movable valve 14, pressure relief pipe 15, conical pipe 16, safety vent 17, movable valve plate 18, pressure plate 19, connecting rod 20, through hole 21, elastic element 22, mounting plate 23, through port 24, liquid baffle 25, rotating shaft 26, torsion spring 28, linkage rod 29, block 30, rubber part 31, flow guide 32, drain valve 33, shielding part 34, groove 35, flow guide hole 36, flow guide channel 37, first limiting element 38, first limiting groove 39, second limiting element 40, second limiting groove 41, airflow buffer guide structure 42, respiratory therapy equipment 43, liquid inlet 44. Detailed Implementation

[0032] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0033] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] As attached Figure 1 To be continued Figure 11 As shown: This invention provides a respiratory therapy system based on mask structure optimization.

[0036] See attached document Figure 1 To be continued Figure 3 It includes a respiratory therapy device 43 and a mask body 10 connected to the respiratory therapy device 43. The front end of the mask body 10 is provided with an air inlet pipe 11, and each side of the mask body 10 is provided with an exhaust pipe 12. The lower part of the mask body 10 is provided with a liquid collection frame 13.

[0037] Preferred options are shown in the appendix. Figure 4 To be continued Figure 8The upper end of the liquid collection frame 13 is provided with a liquid inlet 44, and a rotating shaft 26 is fixedly provided at the liquid inlet 44. A liquid-blocking member 25 is rotatably provided on the outer wall of the rotating shaft 26. A torsion spring 28 is connected between the liquid-blocking member 25 and the rotating shaft 26. A blocking member 34 is fixedly provided on one side wall of the liquid inlet 44. A first limiting member 38 and a second limiting member 40 are symmetrically provided on the other side wall of the liquid inlet 44. A blocking block 30 is provided on the lower side of the end of the liquid-blocking member 25 facing the blocking member 34. The upper part of the 4 is provided with a groove 35, and a guide channel 37 is inclinedly provided on one side of the groove 35. The upper part of the first limiting member 38 is provided with a first limiting groove 39, and the lower part of the second limiting member 40 is provided with a second limiting groove 41. The end of the liquid blocking member 25 facing the direction of the first limiting member 38 is provided with a rubber part 31. The root of the rubber part 31 is provided with a guide hole 36. The root of the rubber part 31 corresponds to the first limiting groove 39, and the end of the rubber part 31 corresponds to the second limiting groove 41. Among them, the guide hole 36 is an obliquely arranged slender hole. Its inlet faces the liquid collection area above the liquid inlet 44, and its outlet faces the lower interior of the liquid collection frame 13. It is offset from the exhaust direction of the pressure relief pipe 15 to reduce the possibility of exhaled airflow entering the liquid collection frame 13 through the guide hole 36.

[0038] Preferred options are shown in the appendix. Figure 10 To be continued Figure 11 An installation plate 23 is fixedly mounted inside the exhaust pipe 12. A pressure relief pipe 15 is fixedly mounted on one side of the installation plate 23. One end of the pressure relief pipe 15 has a tapered tube 16. The installation plate 23 has a safety vent hole 17 and a through-hole 24 in the middle. A movable valve 14 is slidably mounted inside the pressure relief pipe 15. A linkage rod 29 is connected between the movable valve 14 and the liquid-blocking component 25. One end of the linkage rod 29 is hinged to the movable valve 14, and the other end is hinged to the liquid-blocking component 25. Only the movable valve 14 in one exhaust pipe 12 is connected to the liquid-blocking component 25 via the linkage rod 29; the other exhaust pipe 12 is only used for auxiliary exhaust. The linkage rod 29 is arranged along the inner wall of the mask body 10 and is limited by a guide seat, ensuring that the linkage rod 29 moves only in a predetermined direction to avoid interfering with the patient's mouth and nose area. The opening area of ​​the safety vent 17 is smaller than the maximum opening area of ​​the pressure relief pipe 15. It is used to maintain basic venting when the pressure relief pipe 15 is closed and to assist venting when the pressure relief pipe 15 is open.

[0039] Preferred options are shown in the appendix. Figure 10 To be continued Figure 11The movable valve component 14 includes a movable valve plate 18 and a pressure plate 19. A connecting rod 20 is fixedly connected between the movable valve plate 18 and the pressure plate 19. The movable valve plate 18 slides within the pressure relief pipe 15, and the connecting rod 20 slides within the through-hole 24. Several elastic elements 22 are connected between one side of the pressure plate 19 and the mounting plate 23. Several through holes 21 are arranged in a circumferential array on the pressure plate 19. The pressure plate 19 is located on the side of the mounting plate 23 near the interior of the mask body 10. The through holes 21 are used to allow exhaled gas inside the mask body 10 to pass through the pressure plate 19 and enter the through-hole 24 and the pressure relief pipe 15. The movable valve plate 18 blocks the inlet of the pressure relief pipe 15 in the initial state. When the movable valve plate 18 is removed from the blocking position, the exhaled gas can be discharged through the pressure relief pipe 15.

[0040] Preferred options are shown in the appendix. Figure 4 To be continued Figure 8 The liquid collection frame 13 is provided with several pairs of guide members 32. Each pair of guide members 32 is inclined to the left and right and staggered vertically. The several pairs of guide members 32 form a staggered flow path in the liquid collection frame 13 to reduce the liquid falling speed and prevent the residual airflow entering the liquid collection frame 13 from directly impacting the liquid at the bottom of the liquid collection frame 13. The lower end of the liquid collection frame 13 is provided with a drain valve 33.

[0041] Preferred options are shown in the appendix. Figure 4 Appendix Figure 7 The mask body 10 has an airflow buffer and guide structure 42 inside. The airflow buffer and guide structure 42 includes a buffer chamber connected to the air inlet pipe 11, a guide plate set on the outlet side of the buffer chamber, an arc-shaped guide channel extending along the inner wall of the mask body 10, and multiple dispersed air outlets. The multiple dispersed air outlets are set towards the inner wall of the mask body 10 or the mouth and nose avoidance area.

[0042] Specific usage of this invention: After the patient puts on the mask, the mask body 10 and the patient's mouth and nose form a relatively closed mask cavity. The respiratory therapy device 43 delivers oxygen, humidifying gas, atomized drug flow or other therapeutic gas into the mask body 10 through the air inlet tube 11.

[0043] After the therapeutic gas enters the mask body 10, it does not directly impact the patient's mouth and nose, but first enters the airflow buffer and guide structure 42. The airflow is dispersed and slowed down within the airflow buffer and guide structure 42, and flows along the inner wall of the mask body 10 before entering the patient's mouth and nose area more evenly. This reduces discomfort caused by direct airflow onto the patient's mouth and nose, while also improving the uniformity of pressure distribution within the mask body 10.

[0044] During continuous treatment, the patient's exhaled warm and moist air, as well as the residual nebulized liquid produced by the nebulization treatment, easily form condensate or droplets on the inner wall of the mask body 10. Under the influence of gravity, these liquids collect at the bottom of the mask body 10 and flow to the liquid inlet 44 above the liquid collection frame 13.

[0045] During the patient's inhalation or normal air supply phase, the internal pressure of the mask body 10 is within a relatively normal range, and the movable valve 14 does not shift in the opening direction. At this time, the movable valve plate 18 is located inside the pressure relief pipe 15 and blocks the pressure relief pipe 15, keeping the pressure relief pipe 15 in a closed state. Simultaneously, the linkage rod 29 does not cause the liquid-blocking component 25 to flip, and the liquid-blocking component 25 remains in the open position under the action of the torsion spring 28. A liquid-guiding gap is formed between the liquid-blocking component 25 and the shielding component 34, allowing condensate or atomized residual liquid to enter the liquid collection frame 13 through this liquid-guiding gap, and enter the bottom of the liquid collection frame 13 under the guidance of the inclined surface of the guide component 32. Among them, the root of the rubber component 31 is located inside the first limiting groove 39, so that the guide hole 36 is blocked and closed by the first limiting component 38 and the first limiting groove 39.

[0046] When the patient exhales, the pressure inside the mask body 10 increases. This increased pressure acts on the movable valve 14, causing the movable valve plate 18 to slide towards the conical tube 16 within the pressure relief tube 15. The movable valve plate 18 at least partially enters the conical tube 16, forming an annular pressure relief gap with it, thus opening the pressure relief tube 15. Exhaled air enters the pressure relief tube 15 through the through-hole 21 and the through-port 24, and then exits through the pressure relief tube 15 and the conical tube 16, reducing the patient's expiratory resistance and feeling of tightness. Specifically, when the movable valve plate 18 moves, it drives the connecting rod 20 and the pressure plate 19 to move synchronously. The movement of the pressure plate 19 compresses the elastic element 22, causing the elastic element 22 to generate a restoring elastic force.

[0047] Simultaneously, the movement of the movable valve 14 is transmitted to the liquid-blocking component 25 via the linkage rod 29. The linkage rod 29 pulls the side of the liquid-blocking component 25 away from the rotating shaft 26, causing the liquid-blocking component 25 to flip from the open position to the blocked position around the rotating shaft 26. After the liquid-blocking component 25 flips, the end of the liquid-blocking component 25 facing the blocking component 34 contacts the blocking component 34, and the block 30 enters the groove 35 to narrow or close the airflow channel between the liquid-blocking component 25 and the blocking component 34. At this time, the liquid-blocking component 25 covers at least a portion of the liquid inlet 44 above the liquid collection frame 13, thereby providing temporary protection for the liquid collection frame 13 when the exhaled depressurized airflow is discharged, preventing the high-speed exhaled airflow from entering the liquid collection frame 13 and disturbing the collected condensate or atomized residue.

[0048] As the liquid-blocking component 25 flips to the blocking position, the rubber component 31 moves with the liquid-blocking component 25 and disengages from the first limiting component 38, allowing the guide hole 36 to communicate with the inside of the liquid collection frame 13. Therefore, even when the liquid-blocking component 25 blocks the liquid inlet 44, a small amount of condensate or atomized residue can still flow into the inside of the liquid collection frame 13 through the guide hole 36, reducing the accumulation of liquid above the liquid inlet 44.

[0049] After the patient finishes exhaling, the pressure inside the mask body 10 decreases. The pressure plate 19 resets under the elastic force of the elastic element 22, and via the connecting rod 20, it drives the movable valve plate 18 to reset, causing the movable valve plate 18 to re-enter the pressure relief pipe 15 and seal it, thus closing the pressure relief pipe 15. Simultaneously, the linkage rod 29 releases its pulling action on the liquid-blocking element 25, and the torsion spring 28 on the rotating shaft 26 drives the liquid-blocking element 25 from the blocked position back to the open position. At this time, the inlet 44 of the liquid collection frame 13 reopens, and condensate or atomized residual liquid continues to flow into the liquid collection frame 13, achieving continuous drainage. The condensate or atomized residual liquid located in the groove 35 can be discharged through the guide channel 37 and enter the bottom of the liquid collection frame 13.

[0050] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A respiratory therapy system based on mask structure optimization, comprising a respiratory therapy device (43) and a mask body (10) connected to the respiratory therapy device (43), wherein an air inlet pipe (11) is provided at the front end of the mask body (10), an exhaust pipe (12) is provided on each side of the mask body (10), and a liquid collection frame (13) is provided at the lower part of the mask body (10), characterized in that, Also includes: A pressure relief assembly is disposed within the exhaust pipe (12), the pressure relief assembly including a movable valve (14) movable between a sealing position and a pressure relief position; A liquid-blocking component (25) is provided at the liquid inlet (44) at the upper end of the liquid collection frame (13), and can be flipped between the open position and the blocked position; A linkage rod (29) is connected between the movable valve (14) and the liquid-blocking member (25) so that when the movable valve (14) moves to the pressure relief position, it drives the liquid-blocking member (25) to flip to the blocking position; A torsion spring (28) acts on the liquid-blocking member (25) to reset the liquid-blocking member (25) to the open position.

2. The respiratory therapy system based on mask structure optimization according to claim 1, characterized in that: The pressure relief assembly includes a mounting plate (23), which is fixedly disposed inside the exhaust pipe (12). A pressure relief pipe (15) is fixedly disposed on the mounting plate (23). The movable valve (14) is slidably disposed inside the pressure relief pipe (15) and can block the pressure relief pipe (15) at the blocking position and open the pressure relief pipe (15) at the pressure relief position. The mounting plate (23) is provided with a through port (24).

3. A respiratory therapy system based on mask structure optimization according to claim 2, characterized in that: One end of the pressure relief pipe (15) is provided with a tapered pipe (16). When the movable valve (14) is in the pressure relief position, part of the structure of the movable valve (14) enters the tapered pipe (16) and forms an annular pressure relief gap with the tapered pipe (16).

4. A respiratory therapy system based on mask structure optimization according to claim 2, characterized in that: The movable valve (14) includes a movable valve plate (18), a pressure plate (19), a connecting rod (20), and an elastic element (22). The connecting rod (20) is connected between the movable valve plate (18) and the pressure plate (19). The elastic element (22) is connected between the pressure plate (19) and the mounting plate (23). The pressure plate (19) has a through hole (21) for exhaled gas to pass through. The mounting plate (23) has a safety vent hole (17). The safety vent hole (17) connects the inside of the mask body (10) with the exhaust side of the exhaust pipe (12), and the opening area of ​​the safety vent hole (17) is smaller than the maximum opening area of ​​the pressure relief pipe (15).

5. A respiratory therapy system based on mask structure optimization according to claim 1, characterized in that: A rotating shaft (26) is fixedly provided at the liquid inlet (44), and the liquid blocking member (25) is rotatably disposed on the rotating shaft (26). The torsion spring (28) is connected between the liquid blocking member (25) and the rotating shaft (26). A shielding member (34) is provided on one side of the liquid inlet (44). When the liquid blocking member (25) is in the open position, a liquid guiding gap is formed between the liquid blocking member (25) and the shielding member (34). When the liquid blocking member (25) is in the shielding position, the liquid blocking member (25) covers at least a part of the liquid inlet (44).

6. A respiratory therapy system based on mask structure optimization according to claim 5, characterized in that: The liquid-blocking component (25) has a block (30) at one end facing the shielding component (34). The shielding component (34) has a groove (35) that cooperates with the block (30). When the liquid-blocking component (25) is in the shielding position, the block (30) enters the groove (35) to reduce or close the airflow channel between the liquid-blocking component (25) and the shielding component (34).

7. A respiratory therapy system based on mask structure optimization according to claim 5, characterized in that: One end of the linkage rod (29) is hinged to the movable valve (14), and the other end of the linkage rod (29) is hinged to the side of the liquid baffle (25) away from the rotating shaft (26).

8. A respiratory therapy system based on mask structure optimization according to claim 5, characterized in that: On the other side of the liquid inlet (44), there is a first limiting member (38) and a second limiting member (40). The liquid blocking member (25) is provided with a rubber part (31), and the rubber part (31) is provided with a guide hole (36). When the liquid blocking member (25) is in the open position, the rubber part (31) cooperates with the first limiting member (38) to block the guide hole (36). When the liquid blocking member (25) is in the blocked position, the rubber part (31) disengages from the first limiting member (38) so that the guide hole (36) communicates with the inside of the liquid collection frame (13).

9. A respiratory therapy system based on mask structure optimization according to claim 1, characterized in that: The mask body (10) is provided with an airflow buffer and guide structure (42). The airflow buffer and guide structure (42) includes a buffer cavity connected to the air inlet pipe (11), a guide plate disposed downstream of the buffer cavity, a guide channel extending along the inner wall of the mask body (10), and multiple dispersed air outlets. The liquid collection frame (13) is provided with multiple pairs of vertically staggered guide members (32). The multiple pairs of guide members (32) form a deflection and liquid guiding path in the liquid collection frame (13).

10. A respiratory therapy method based on mask structure optimization, based on the respiratory therapy system based on mask structure optimization according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Therapeutic gas buffer introduction step, the respiratory therapy device (43) delivers therapeutic gas to the mask body (10), the therapeutic gas enters the airflow buffer guide structure (42) inside the mask body (10) through the air inlet pipe (11); the therapeutic gas is slowed down in the airflow buffer guide structure (42) and dispersed into the patient's mouth and nose area through the guide plate, guide channel and multiple dispersed air outlets in the airflow buffer guide structure (42); S2: Condensate and residual atomized liquid drainage steps. During the respiratory therapy, the patient's exhaled hot and humid gas or the residual atomized liquid generated by the atomized therapy forms droplets on the inner wall of the mask body (10). The droplets flow to the lower part of the mask body (10) under the action of gravity and gather at the liquid inlet (44) of the liquid collection frame (13). S3: During the normal liquid guiding process, when the pressure of the mask body (10) does not reach the pressure relief trigger range during the inhalation stage, the liquid blocking component (25) is kept in the open position under the action of the torsion spring (28); at this time, the liquid inlet (44) of the liquid collection frame (13) is opened, and the condensate or atomized residual liquid can enter the liquid collection frame (13). S4: Expiratory pressure triggers the pressure relief step. When the patient exhales, the pressure inside the mask body (10) increases. This pressure acts on the movable valve (14), causing the movable valve (14) to move from the blocking position to the pressure relief position, so as to open the pressure relief pipe (15); the exhaled gas is discharged through the exhaust pipe (12). S5: Linkage liquid blocking step. While the movable valve (14) moves, the linkage lever (29) drives the liquid blocking component (25) to rotate around the pivot (26), so that the liquid blocking component (25) rotates from the open position to the blocked position. When the liquid blocking component (25) is in the blocked position, it blocks the liquid inlet (44) of the liquid collection frame (13) to prevent the exhaled pressure relief airflow from entering the liquid collection frame (13) and prevent the collected liquid from being blown away, splashed, backflowed or atomized again. S6: Reset and restore the fluid delivery step. After the patient finishes exhaling, the pressure inside the mask body (10) decreases; the movable valve (14) resets, the linkage lever (29) releases the pulling action on the liquid blocking component (25), and the liquid blocking component (25) resets to the open position under the action of the torsion spring (28); the inlet (44) of the liquid collection frame (13) reopens, and the condensate or atomized residual liquid continues to enter the liquid collection frame (13), and the system enters the next respiratory cycle.

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