Airway assembly and respiratory muscle force detection device

Abstract

The invention provides an airway assembly and a respiratory muscle force detection device, and relates to the technical field of medical detection devices. The air channel assembly comprises a first pipe body, a second pipe body, a filter screen and a one-way valve. The first pipe body is provided with a first air channel and a first pipe opening communicating the first air channel with the outside. The second pipe body is provided with a second gas channel, and a second pipe orifice and a detection hole which are communicated with the second gas channel and the outside; the first pipe body and the second pipe body are mutually nested, the first pipe body is provided with a first clamping groove, the second pipe body is provided with a first clamping block, and the first clamping block is clamped in the first clamping groove; the filter screen is located between the first pipe body and the second pipe body, and meshes of the filter screen are communicated with the first gas channel and the second gas channel; the one-way valve is detachably connected to the second pipe opening and used for preventing external airflow from entering the second gas channel or preventing gas in the second gas channel from flowing to the outside, and the gas channel assembly has the advantage of being convenient and fast to mount and dismount and is convenient to clean and maintain.

Description

Technical Field

[0001] The present application belongs to the technical field of medical detection devices, and more specifically, relates to an airway component and a respiratory muscle strength detection device. Background Art

[0002] Respiratory muscle strength (such as maximum inspiratory pressure (MIP) and maximum expiratory pressure (MEP)) is an important indicator for assessing respiratory function and is widely used in patients with chronic obstructive pulmonary disease (COPD), neuromuscular diseases, and those recovering from surgery. Currently, mainstream respiratory muscle strength testing equipment typically uses an airway device that contacts the patient's mouth and nose, collecting pressure data during breathing to achieve functional assessment.

[0003] The airway assembly, used in respiratory muscle strength testing equipment, guides and transmits the gas used during a patient's breathing, ensuring stability and accuracy during the gas delivery process. Internal filters prevent the entry of foreign matter into the device, ensuring accurate test results. However, existing airway assemblies are difficult to install and remove, making them inconvenient to clean and maintain. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide an airway component and a respiratory muscle strength detection device to solve the defects of the prior art that the airway component is difficult to disassemble and clean and is easily damaged.

[0005] To achieve the above objectives, in a first aspect, the present application provides an airway assembly, comprising:

[0006] a first tube body having a first gas channel and a first tube opening communicating with the first gas channel and the outside;

[0007] The second tube body has a second gas channel and a second tube port and a detection hole connecting the second gas channel with the outside; the first tube body and an end facing away from the first tube port and an end facing away from the second tube port are nested with each other, one of the first tube body and the second tube body is provided with at least one first clamping groove, and the other is provided with at least one first clamping block, the first clamping block being clamped in the first clamping groove;

[0008] a filter screen having a plurality of meshes, located between the first tube body and the second tube body, wherein the meshes communicate with the first gas channel and the second gas channel;

[0009] A one-way valve is detachably connected to the second pipe opening and is used to prevent external airflow from entering the second gas channel or to prevent the gas in the second gas channel from flowing to the outside.

[0010] In some embodiments, the first clamping groove is provided on the first tube body, and the first clamping block is provided on the second tube body; the first clamping groove includes:

[0011] a first inserting groove, formed on a side of the first tube body facing away from the first tube opening and extending along the axial direction of the first tube body;

[0012] a first limiting groove, formed on an inner wall surface of the first plugging groove, located on a side of the first plugging groove facing away from the groove opening thereof, and extending along the circumference of the first tube body;

[0013] The first clamping block can be inserted into the first insertion groove along the axial direction of the first tube body and rotated around the central axis of the first tube body into the first limiting groove.

[0014] In some embodiments, the first clamping block is provided with a limiting protrusion on one axial side of the second tube body, and the second groove body is provided with a limiting groove on one axial side of the first tube body, and the limiting protrusion can be elastically engaged in the limiting groove when rotating around the central axis of the first tube body into the first limiting groove.

[0015] In some embodiments, the first tube body further has a first connection surface facing away from the first tube opening, and the first connection surface is provided with a first connection port connecting the first gas channel with the external space;

[0016] The second tube body further has a second connecting surface facing away from the second tube opening, and the second connecting surface is provided with a second connecting port communicating with the second gas channel and the external space;

[0017] The first connection surface and the second connection surface are arranged facing each other and spaced apart, one side surface of the filter is in contact with the first connection surface, and the other side surface is in contact with the second connection surface, and the mesh is connected with the first connection port and the second connection end to connect the first gas channel and the second gas channel.

[0018] In some embodiments, the first connection surface is provided with a first sealing ring, which surrounds the circumference of the first connection port and abuts against the surface of the filter screen facing the first connection surface;

[0019] And / or, the second connection surface is provided with a second sealing ring, which surrounds the circumference of the second connection port and abuts against a surface of the filter screen facing the second connection surface.

[0020] In some embodiments, the one-way valve comprises:

[0021] The valve body has at least one vent hole and is nested with the second pipe opening of the second pipe body; one of the valve body and the second pipe body is provided with at least one second clamping groove, and the other is provided with at least one second clamping block, and the second clamping block is clamped in the second clamping groove;

[0022] an elastic sealing gasket, partially connected to the valve body and covering the vent hole, capable of deforming to expose at least a portion of the vent hole when subjected to a force directed away from the valve body;

[0023] When the one-way valve is used to prevent external airflow from entering the second gas channel, the elastic sealing gasket is arranged on the side of the valve body facing away from the first gas channel; when the one-way valve is used to prevent the gas in the second gas channel from flowing to the outside, the elastic sealing gasket is located on the side of the valve body facing the first gas channel.

[0024] In some embodiments, the second clamping block is protruded from the outer surface of the valve body; the second clamping groove is formed on the inner wall of the second tube body and includes:

[0025] a second plugging slot, formed at the second end of the second tube body and extending along the axial direction of the second tube body;

[0026] a second limiting groove, formed on an inner wall surface of the second limiting groove, located on a side of the second plugging groove facing away from the notch, and extending along the circumference of the second tube body;

[0027] The second clamping block can be inserted into the second insertion groove along the circumference of the second tube body and rotated around the central axis of the second tube body into the second limiting groove.

[0028] In some embodiments, the valve body comprises:

[0029] A support tube, which is hollow inside and open at both ends, and is nested with the second tube opening of the second tube body;

[0030] A support member connected to the inner side of the support tube and provided with a plurality of the vent holes;

[0031] Two limiting members are respectively arranged at the two ends of the support member in the axial direction of the support tube, and part of the elastic sealing pad can be limited between any one of the limiting members and the support member.

[0032] In some embodiments, the second tube body further has a third gas channel, which is annular and surrounds the circumference of the second gas channel. The inner wall surface of the second gas channel is provided with a plurality of air inlet holes connected to the third gas channel. The plurality of air inlet holes are arranged at intervals along the circumference of the third gas channel, and the detection hole is connected to the third gas channel.

[0033] In a second aspect, the present application provides a respiratory muscle strength detection device, comprising an airway component as described in the first aspect and any optional embodiment thereof.

[0034] The beneficial effects of the airway assembly and respiratory muscle strength detection device provided in the present application are: compared with the existing technology, the filter screen is installed between the first tube body and the second tube body through the nested connection of the first tube body and the second tube body, and the first clamping groove and the first clamping block are used to clamp the first tube body and the second tube body. When the first tube body and the second tube body are separated, the filter screen can be removed, thereby realizing rapid installation and disassembly of the airway assembly, thereby facilitating the cleaning and maintenance of the airway assembly and extending the service life of the airway assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] Figure 1 This is a schematic structural diagram of the airway assembly in an embodiment of the present application;

[0037] Figure 2 This is an exploded view of the airway assembly in an embodiment of the present application;

[0038] Figure 3 This is a schematic structural diagram of the first tube body in an embodiment of the present application;

[0039] Figure 4 This is a schematic structural diagram of the second tube body in an embodiment of the present application;

[0040] Figure 5 This is an exploded view of the connection relationship between the second tube body and the one-way valve in the embodiment of the present application;

[0041] Figure 6 This is a cross-sectional view of the one-way valve preventing external airflow from entering the second gas channel in an embodiment of the present application;

[0042] Figure 7 This is a cross-sectional view of the one-way valve preventing the gas in the second gas channel from flowing to the outside in the embodiment of the present application;

[0043] Figure 8 This is an exploded view of the one-way valve in the embodiment of the present application preventing external airflow from entering the second gas channel;

[0044] Figure 9 This is an exploded view of the one-way valve in the embodiment of the present application preventing the gas in the second gas channel from flowing to the outside.

[0045] Among them, the reference numerals in the figures are:

[0046] 100 - first tube body; 101 - first gas channel; 102 - first nozzle; 103 - first connection port; 104 - first snap-fit groove; 104a - first plug-in groove; 104b - first limiting groove; 104c - limiting groove; 110 - first connection surface; 1101 - first mounting groove; 120 - first sealing ring; 200 - second tube body; 201 - second gas channel; 202 - second nozzle; 203 - detection hole; 204 - second connection port; 205 - second snap-fit groove; 205a - second Plug-in slot; 205b-second limiting slot; 206-third gas channel; 207-air inlet; 208-connecting channel; 210-second connecting surface; 2101-second mounting slot; 220-first clamping block; 221-limiting protrusion; 230-second sealing ring; 300-filter; 400-one-way valve; 410-valve body; 4101-vent; 411-support tube; 412-support member; 413-limiting member; 420-elastic sealing pad; 4201-mounting hole; 430-second clamping block. DETAILED DESCRIPTION

[0047] The present application provides a vertebral lamina rongeur, which is used to solve the technical problem in the prior art that the rongeur in the prior art is difficult to bite into the inclined bone block when the incision is small, resulting in difficulty in biting off the vertebral lamina.

[0048] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0049] like Figures 1 to 9 As shown, an embodiment of the present application provides an airway assembly, including a first tube body 100 , a second tube body 200 , a filter 300 and a one-way valve 400 .

[0050] The first tube body 100 has a first gas channel 101 and a first nozzle 102 connecting the first gas channel 101 with the outside world. The second tube body 200 has a second gas channel 201, a second nozzle 202 connecting the second gas channel 201 with the outside world, and a detection hole 203. The first tube body 100 and the end facing away from the first nozzle 102 and the end facing away from the second nozzle 202 are nested together. One of the first tube body 100 and the second tube body 200 is provided with at least one first engaging groove 104, and the other is provided with at least one first engaging block 220, which engages within the first engaging groove 104. The filter screen 300 has multiple meshes and is located between the first tube body 100 and the second tube body 200, connecting the first gas channel 101 and the second gas channel 201. A one-way valve 400 is detachably connected to the second nozzle 202 to prevent external airflow from entering the second gas channel 201 or to prevent gas within the second gas channel 201 from flowing to the outside world.

[0051] Among them, the first tube body 100 refers to a tubular structure having a first gas channel 101 and a first nozzle 102, which can be specifically made by medical-grade plastic injection molding. The first nozzle 102 is used to connect to an external gas source or a patient interface. The second tube body 200 refers to a tubular structure having a second gas channel 201, a second nozzle 202 and a detection hole 203. Specifically, it can adopt a split design and provide a detection hole 203 on the side wall. The detection hole 203 is used to connect to a pressure sensor. Mutual nesting means that the first tube body 100 and the second tube body 200 are connected by axial plug-in. Specifically, a conical mating surface or a guide rib structure can be used to ensure coaxiality. The first snap-in groove 104 and the first snap-in block 220 refer to the concave-convex mating structure provided at the connecting end of the two tube bodies. Specifically, an L-shaped slide and a protrusion design can be used to achieve rotational locking, solving the problem of traditional snap hooks being easily broken. The filter screen 300 refers to a sheet-like filter structure with a through mesh. One-way valve 400 refers to a valve body 410 that controls directional airflow. Specifically, it utilizes a silicone diaphragm and a support frame, blocking unidirectional airflow through the deformation of an elastic sealing gasket 420. A removable connection refers to a non-destructive connection between valve body 410 and second nozzle 202, specifically through a threaded connection or snap-fit mechanism for quick assembly and disassembly.

[0052] Through the nested tube structure and the rotating clamping mechanism, quick disassembly and assembly without tools is achieved while ensuring air tightness. Combined with the replaceable filter 300 and the detachable one-way valve 400, the technical defects of traditional airway components that are easy to damage and difficult to clean are effectively solved.

[0053] During use, the first tube body 100 and the second tube body 200 are nested together, securely locked by the first engaging block 220 and the first engaging groove 104. Gas can enter the first gas channel 101 through the first tube opening 102, pass through the filter 300, and then enter the second gas channel 201 after purification, and finally be discharged from the second tube opening 202. A one-way valve 400 can be installed at the second tube opening 202 as needed to prevent external airflow from entering or internal gas from flowing out. The detection hole 203 is used to connect to testing equipment such as a pressure sensor to monitor the pressure within the airway.

[0054] In some embodiments, the first clamping groove 104 includes a first plug-in groove 104a and a first limiting groove 104b. The first plug-in groove 104a is opened on the side of the first tube body 100 facing away from the first pipe mouth 102 and extends axially. The first limiting groove 104b is opened on the inner wall surface of the first plug-in groove 104a and extends circumferentially. The first clamping block 220 can be inserted into the first plug-in groove 104a along the axial direction and then rotated around the center axis to the first limiting groove 104b.

[0055] The axial extension of the first insertion slot 104a allows the connecting block of the second tube 200 to be inserted along a straight path during assembly, eliminating the lateral force required by traditional hook structures. The circumferential extension of the first limiting slot 104b provides a fixed position for the connecting block after rotation, enhancing connection stability through dual axial and circumferential restraint. When the connecting block rotates to the end of the first limiting slot 104b, its movement is restricted by the slot wall, preventing accidental rotation and disengagement due to vibration or external forces.

[0056] During the assembly process, the snap-in block of the second tube body 200 is first inserted into the first plug-in slot 104a along the axial direction of the first tube body 100. At this time, the snap-in block and the inner wall of the plug-in slot are clearance-matched to achieve preliminary positioning. The second tube body 200 is then rotated to move the snap-in block circumferentially to the end of the first limiting slot 104b. At this time, the snap-in block forms surface contact with the side wall of the limiting slot, and the axial displacement is completely restricted. This rotational locking mechanism increases the contact area between the snap-in block and the limiting slot when the connection structure is subjected to axial tension, disperses stress concentration, and reduces the risk of component breakage. During disassembly, the limit can be released by rotating the tube body in the opposite direction without the assistance of tools. This improves operating efficiency while avoiding damage to components caused by violent disassembly.

[0057] Specifically, the first tube body 100 can adopt a cylindrical structure, and its outer wall surface is provided with a plurality of first plug-in grooves 104a extending in the axial direction. The inner wall surface of each first plug-in groove 104a is provided with a first limiting groove 104b extending in the circumferential direction near the bottom. The outer wall surface of the second tube body 200 is provided with first clamping blocks 220 corresponding to the number of first plug-in grooves 104a. During assembly, the second tube body 200 is inserted into the first tube body 100, so that the first clamping block 220 is inserted along the first plug-in groove 104a. When the first clamping block 220 reaches the bottom of the first plug-in groove 104a, the second tube body 200 is rotated so that the first clamping block 220 enters the first limiting groove 104b, thereby completing the fixed connection of the two tube bodies.

[0058] Through the above-described technical solution, the present application achieves rapid assembly and disassembly of the first tube body 100 and the second tube body 200. This makes cleaning and maintenance of the airway assembly much more convenient. Furthermore, this connection structure avoids the breakage problem associated with traditional hook-type connections, thereby increasing the service life of the airway assembly. Furthermore, the use of plug-in and rotational locking enhances the stability of the connection and reduces the risk of loosening during use.

[0059] In some embodiments, the first clamping block 220 is provided with a limiting protrusion 221 on the axial side of the second tube body 200, and the second groove body is provided with a limiting groove 104c on the axial side of the first tube body 100. The limiting protrusion 221 can be elastically engaged in the limiting groove 104c when it rotates around the central axis of the first tube body 100 to the first limiting groove 104b.

[0060] Among them, the limiting protrusion 221 is arranged on the axial side wall surface of the second tube body 200, and its shape matches the contour of the limiting groove 104c; the limiting groove 104c is opened on the corresponding axial side wall of the first tube body 100, and the depth is slightly smaller than the height of the limiting protrusion 221; the elastic engagement is achieved by elastic deformation of the material of the limiting protrusion 221, for example, by plastic injection molding, so that the limiting protrusion 221 can be deformed and embedded in the groove when under pressure.

[0061] Specifically, when the second tube 200 is axially inserted into the first tube 100 and rotated to a predetermined angle, the limiting protrusion 221 is squeezed by the inner wall of the first tube 100, causing radial elastic deformation. Once fully rotated, the limiting protrusion 221 recovers its deformation and embeds itself into the limiting groove 104c, forming an axial lock. During disassembly, applying a reverse rotational force causes the limiting protrusion 221 to deform again and disengage from the groove, enabling quick, tool-free separation. This structure, through the dual effects of elastic deformation and mechanical limiting, ensures a secure connection while reducing the risk of component breakage. Furthermore, the enclosed design of the groove and protrusion prevents contaminants from entering the clamping gap.

[0062] Through the above technical solution, the present application achieves a more stable connection between the first tube body 100 and the second tube body 200. The elastic locking mechanism of the limiting protrusion 221 and the limiting groove 104c not only ensures the firmness of the connection, but also facilitates the disassembly operation. This design avoids the problem of easy breakage of the traditional hook-type connection and increases the service life of the airway component. At the same time, the structure simplifies the disassembly and cleaning process, reduces the risk of residual contaminants, and effectively improves the hygiene and reuse efficiency of the equipment. In addition, this connection method can be disassembled and assembled without the aid of additional tools, which greatly improves the convenience of operation and is particularly suitable for medical equipment that requires frequent cleaning and maintenance.

[0063] In some embodiments, the first tube body 100 has a first connecting surface 110 facing away from the first pipe mouth 102, and the first connecting surface 110 is provided with a first connecting port 103 connecting the first gas channel 101 and the external space; the second tube body 200 has a second connecting surface 210 facing away from the second pipe mouth 202, and the second connecting surface 210 is provided with a second connecting port 204 connecting the second gas channel 201 and the external space; the first connecting surface 110 and the second connecting surface 210 are arranged facing each other and spaced apart, one side surface of the filter screen 300 abuts against the first connecting surface 110, and the other side surface abuts against the second connecting surface 210, and the mesh is connected to the first connecting port 103 and the second connecting end to connect the first gas channel 101 and the second gas channel 201.

[0064] Among them, the first connecting surface 110 and the second connecting surface 210 are arranged at intervals to form a clamping space for accommodating the filter screen 300, and the two side surfaces of the filter screen 300 are in surface contact with the two connecting surfaces respectively; the first connecting port 103 and the second connecting port 204 respectively form an axially aligned through-structure with the mesh of the filter screen 300; the first sealing ring 120 surrounds the circumference of the first connecting port 103, and the second sealing ring 230 surrounds the circumference of the second connecting port 204, and both form elastic pressure connections with the two side surfaces of the filter screen 300 respectively.

[0065] Specifically, when the filter 300 is clamped between the first connection surface 110 and the second connection surface 210, the mesh axially penetrates the first connection port 103 and the second connection port 204, forming a continuous gas flow path; the first sealing ring 120 and the second sealing ring 230 respectively fill the gap between the filter 300 and the connection surface through elastic deformation, preventing gas from leaking from areas outside the mesh; when the first tube body 100 and the second tube body 200 are fixed by the clamping structure, the distance between the two connection surfaces is compressed to produce a preset deformation amount for the sealing ring, ensuring that the filter 300 does not move under gas pressure. This structure, through the combination of surface contact and elastic sealing rings, achieves a multiple sealing effect while ensuring the connectivity of the gas channel, preventing saliva or secretions from penetrating the gap between the connection surfaces and reducing the frequency of disassembly and cleaning.

[0066] In some embodiments, the first connection surface 110 is provided with a first sealing ring 120, which surrounds the circumference of the first connection port 103 and abuts against the surface of the filter 300 facing the first connection surface 110; the second connection surface 210 is provided with a second sealing ring 230, which surrounds the circumference of the second connection port 204 and abuts against the side surface of the filter 300 facing the second connection surface 210.

[0067] The first sealing ring 120 or the second sealing ring 230 is made of an elastic material with an annular cross-section that fits tightly against the edge of the first connection port 103 or the second connection port 204. The inner diameter of the sealing ring matches the diameter of the connection port, while the outer diameter is larger than the diameter of the connection port to cover the gap around the port. When the first tube 100 and the second tube 200 are nested together using the snap-fit mechanism, the filter 300 is clamped between the first connection surface 110 and the second connection surface 210. The sealing ring is squeezed and deformed, filling the gap between the filter 300 and the connection surface.

[0068] Specifically, during the assembly process, the first tube body 100 and the second tube body 200 are nested through axial insertion and rotational engagement. At this time, the first connection surface 110 and the second connection surface 210 are close to each other and clamp the filter screen 300. The first sealing ring 120 and the second sealing ring 230 are respectively compressed between the filter screen 300 and the corresponding connection surface, forming a continuous sealing ring surrounding the connection port. The sealing ring prevents gas from leaking outward from the first gas channel 101 or the second gas channel 201 through the edge of the connection port, and at the same time prevents external contaminants from entering the interior of the gas channel through the gap between the connection surfaces. During the disassembly process, the elastic recovery properties of the sealing ring allow it to be reused, avoiding seal failure due to multiple disassembly and assembly.

[0069] In this embodiment, a first mounting groove 1101 is defined on the first connecting surface 110. The first sealing ring 120 is installed within the first mounting groove 1101. Its cross-sectional shape matches the first mounting groove 1101, ensuring that the sealing ring will not shift during installation. The depth of the first mounting groove 1101 can be smaller than the diameter of the first sealing ring 120, so that the first sealing ring 120 has a certain amount of compression after installation to ensure a good sealing effect. The second connecting surface 210 also defines a second mounting groove 2101 for installing a second sealing ring 230. The depth of the second mounting groove 2101 is also slightly smaller than the diameter of the second sealing ring 230, ensuring that the second sealing ring 230 has sufficient compression after installation to achieve a good sealing effect.

[0070] In some embodiments, the one-way valve 400 includes a valve body 410, which has at least one vent 4101 and is nested with the second pipe mouth 202 of the second tube body 200. One of the valve body 410 and the second tube body 200 is provided with at least one second clamping groove 205, and the other is provided with at least one second clamping block 430, and the second clamping block 430 is clamped in the second clamping groove 205; the elastic sealing gasket 420 is partially connected to the valve body 410 and covers the vent 4101, and can be deformed to expose at least part of the vent 4101 when subjected to a force opposite to the side of the valve body 410; when the one-way valve 400 is used to prevent external air flow from entering the second gas channel 201, the elastic sealing gasket 420 is arranged on the side of the valve body 410 facing away from the first gas channel 101; when the one-way valve 400 is used to prevent the gas in the second gas channel 201 from flowing to the outside, the elastic sealing gasket 420 is located on the side of the valve body 410 facing the first gas channel 101.

[0071] The second clamping block 430 protrudes from the outer surface of the valve body 410. The second clamping groove 205 includes a second insertion groove 205a extending axially along the second tube body 200 and a second limiting groove 205b extending circumferentially. The second clamping block 430 can be inserted axially and then rotated into the limiting groove to complete the locking. A support tube 411 and a support member 412 are provided within the valve body 410. The support member 412 and the inner wall of the support tube 411 are surrounded by a plurality of vents 4101. The elastic sealing gasket 420 is clamped and fixed by two limiting members 413, which are located at the axial ends of the support tube 411. When the elastic sealing gasket 420 covers the vents 4101, it blocks airflow. When it is compressed and deformed, the vents 4101 are opened.

[0072] Specifically, the valve body 410 is initially positioned by axially plugging the second clamping block 430 into the second plug-in slot 205a, and then rotated to allow the second clamping block 430 to enter the circumferentially extending second limiting slot 205b to complete the locking. This structure avoids the cantilever stress state of the traditional hook and reduces the risk of breakage. The elastic sealing gasket 420 is installed in a position according to the airflow direction requirements. When it is necessary to prevent the entry of external airflow, the sealing gasket is placed on the outside of the valve body 410, and the exhalation pressure causes it to be close to the support member 412 to close the vent 4101; when it is necessary to prevent the outflow of internal gas, the sealing gasket is placed on the inside of the valve body 410, and the inhalation negative pressure causes it to be close to the support member 412 to achieve sealing. The porous structure formed by the support tube 411 and the support member 412 disperses the airflow pressure, and the limiting member 413 clamps and fixes the edge of the sealing gasket to ensure that it is elastically deformed only in the middle area, avoiding sealing failure caused by overall displacement.

[0073] Through the above-described technical solution, the present application achieves a detachable connection between the one-way valve 400 and the second tube body 200, facilitating cleaning and replacement. Furthermore, by providing the elastic sealing gasket 420, airflow can be selectively blocked from entering or exiting the second gas channel 201 as needed, thereby improving the applicability and flexibility of the airway assembly. Furthermore, the arrangement of the support member 412 and the stopper 413 provides stable support and positioning for the elastic sealing gasket 420, ensuring the reliability and sealing of the one-way valve 400.

[0074] In this embodiment, the second clamping block 430 is protruded from the outer surface of the valve body 410; the second clamping groove 205 is opened on the inner wall surface of the second tube body 200, and includes a second plug-in groove 205a, which is opened at the second port of the second tube body 200 and extends along the axial direction of the second tube body 200; the second limiting groove 205b is opened on the inner wall surface of the second limiting groove 205b, is located on the side of the second plug-in groove 205a facing away from the groove opening, and extends along the circumference of the second tube body 200; wherein, the second clamping block 430 can be inserted into the second plug-in groove 205a along the circumference of the second tube body 200, and rotate around the central axis of the second tube body 200 to the second limiting groove 205b.

[0075] Specifically, the second insertion slot 205a extends axially along the second tube 200 to form a linear guide channel, along which the second engaging block 430 moves to achieve initial positioning. A second limiting slot 205b extends circumferentially at the end of the insertion slot, forming a rotational locking path. After rotation, the second engaging block 430 engages the limiting slot to achieve radial restraint. The insertion slot and limiting slot form an L-shaped engaging path, allowing axial movement and rotation to occur in stages.

[0076] After the second clamping block 430 is axially inserted into the plug-in slot along the second tube body 200, it rotates 90 degrees around the axis and enters the circumferentially extending limit slot. The axial movement completes the initial alignment of the valve body 410 and the second tube body 200, and the rotational action causes the clamping block and the limit slot to form a circumferential limit to prevent axial disengagement. During disassembly, the lock can be released by rotating in the opposite direction without the assistance of tools. The L-shaped path design of the plug-in slot and the limit slot enables the clamping block to only bear shear force, reducing the risk of breakage. The axial extension length of the plug-in slot controls the insertion depth of the clamping block, and the circumferential extension angle of the limit slot determines the rotation stroke. The two work together to achieve stable locking.

[0077] Through the above technical solution, the present application realizes the rapid disassembly and assembly of the valve body 410 and the second tube body 200. Due to the use of plug-in and rotation connection methods, the disassembly and assembly operations can be completed without the use of tools, which greatly improves the convenience of operation. At the same time, the connection structure avoids the problem of easy breakage of traditional hook-type connections, and improves the reliability and service life of the connection. In addition, the design of the plug-in slot and the limit slot makes the connection more stable and reduces the risk of loosening during use. The structure is also easy to clean and disinfect, effectively prevents the accumulation of pollutants, and improves the hygiene of the equipment. Overall, this technical solution significantly improves the user experience and maintenance efficiency of the respiratory muscle strength detection device.

[0078] In some embodiments, the valve body 410 includes a support tube 411, a support member 412 and two limit members 413. The support tube 411 is hollow inside and has openings at both ends and is nested with the second pipe opening 202 of the second tube body 200. The support member 412 is connected to the inner side of the support tube 411 and has multiple ventilation holes 4101. The two limit members 413 are respectively arranged at the two ends of the support member 412 in the axial direction of the support tube 411. Part of the elastic sealing gasket 420 can be limited between any one of the limit members 413 and the support member 412.

[0079] Among them, the support tube 411 adopts a hollow structure with two ends open. Its outer diameter matches the inner diameter of the second pipe mouth 202 to achieve a nested connection. The axial length of the support tube 411 is greater than the insertion depth of the second pipe mouth 202 to form an external extension section. The support member 412 is composed of multiple partitions spliced together, and its edge is connected to the inner wall of the support tube 411, dividing the inner cavity of the support tube 411 into multiple vents 4101. The two limiters 413 can be a protruding block structure. The center of the elastic sealing gasket 420 is provided with a mounting hole 4201 with a smaller diameter, and is expanded and sleeved on the limiter 413 through the through hole, so that the central part of the elastic sealing gasket 420 is blocked by the limiter 413 to prevent axial or radial displacement. At the same time, the elastic sealing gasket 420 covers all the vents 4101. According to the requirements of the airflow direction, it can deform when subjected to pressure, exposing or partially exposing the vents 4101, thereby achieving on-off control of the airflow.

[0080] Specifically, when it is necessary to prevent external airflow from entering the second gas channel 201, the elastic sealing gasket 420 is installed on the side of the support tube 411 facing away from the second tube body 200. At this time, airflow acts on the elastic sealing gasket 420 from the outside, causing it to cover the vent 4101. When it is necessary to prevent gas from flowing out of the second gas channel 201, the elastic sealing gasket 420 is installed on the side of the support member 412 facing the second tube body 200. At this time, internal air pressure acts on the sealing gasket, causing it to close the vent 4101.

[0081] In actual use, two sets of one-way valves 400 can be prepared in advance. The elastic sealing gasket 420 of one one-way valve 400 is installed on the side of the support tube 411 facing away from the second tube body 200 to prevent external airflow from entering the second gas channel 201. The elastic sealing gasket 420 of the other one-way valve 400 is installed on the side of the support member 412 facing the second tube body 200 to prevent the outflow of gas within the second gas channel 201. During use, the corresponding one-way valve 400 is installed on the second tube body 200 according to the required expiratory or inspiratory muscle force, allowing flexible adjustment of the airflow direction to meet different testing requirements.

[0082] In some embodiments, the second tube body 200 further has a third gas channel 206, which is annular and surrounds the circumference of the second gas channel 201. The inner wall surface of the second gas channel 201 is provided with a plurality of air inlet holes 207 connected to the third gas channel 206. The plurality of air inlet holes 207 are arranged at intervals along the circumference of the third gas channel 206, and the detection hole 203 is connected to the third gas channel 206.

[0083] Among them, the third gas channel 206 is an annular space arranged around the second gas channel 201, which is used to accommodate and conduct the detection gas. The air inlet 207 serves as a bridge connecting the second gas channel 201 and the third gas channel 206, allowing part of the gas in the second gas channel 201 to flow into the third gas channel 206. These air inlet holes 207 are arranged evenly or unequally spaced along the circumference of the third gas channel 206 to ensure that the gas can enter the third gas channel 206 evenly and stably, thereby improving the accuracy and reliability of the detection. A connecting channel 208 can also be opened on the second tube body 200 to connect the detection hole 203 with the third gas channel 206. The annular design of the third gas channel 206 is combined with the circumferentially distributed air inlet holes 207 to form a uniform pressure field for the gas in the channel, thereby avoiding the influence of local airflow disturbances on the detection accuracy.

[0084] When testing the expiratory muscle strength, the user blows air into the first gas channel 101 through the first tube mouth 102. At this time, the elastic sealing pad 420 of the one-way valve 400 installed on the side of the second tube body 200 facing away from the first tube body 100 is tightly against the support member 412 under the exhalation pressure, closing the air vent 4101, and preventing the air flow from flowing out of the second gas channel 201, so that pressure is generated in the second gas channel 201 and enters the detection device through the third gas channel 206 for pressure detection. Moreover, when the user inhales, the external airflow can push the elastic sealing pad 420 to deform and open the air vent 4101 under the action of pressure, so that the external gas can smoothly enter the airway component, thereby avoiding unnecessary obstruction to the user's breathing during the detection process.

[0085] When testing inspiratory muscle strength, the elastic sealing gasket 420 of the one-way valve 400, which is installed on the side of the second tube body 200 facing the first tube body 100, fits against the support member 412 under the action of the inspiratory negative pressure, closing the vent 4101 and preventing the gas in the second gas channel 201 from flowing out through the second nozzle 202. At this time, the user inhales through the first nozzle 102, and a negative pressure is formed in the second gas channel 201, which is connected to the detection device through the third gas channel 206. The detection device assesses the inspiratory muscle strength by monitoring the change in negative pressure. When the user exhales, the pressure in the second gas channel 201 increases, pushing the elastic sealing gasket 420 to deform and open the vent 4101, allowing air to flow out of the second nozzle 202, ensuring smooth breathing.

[0086] Based on the above-mentioned airway assembly, the present application also provides a respiratory muscle strength detection device, including the airway assembly of the above-mentioned embodiment. The respiratory muscle strength detection device realizes respiratory pressure data collection through the airway assembly. When the first tube body 100 and the second tube body 200 are nested and connected, the first clamping block 220 is axially inserted into the first insertion groove 104a and then rotated to the first limit groove 104b to complete the locking. The elastic engagement between the limit protrusion 221 and the limit groove 104c prevents rotational loosening. The filter 300 connects the two gas channels through the mesh and blocks pollutants. The sealing ring prevents gas leakage. The one-way valve 400 controls the unidirectional flow of air according to the installation direction. The annular design of the third gas channel 206 is combined with the circumferentially distributed air inlet holes 207 to form a uniform pressure field within the channel, avoiding the impact of local airflow disturbances on detection accuracy. The connecting structure between the detection hole 203 and the third gas channel 206 further reduces airflow resistance, ensuring the real-time and accuracy of pressure signal transmission. The detachable nested connection structure facilitates thorough cleaning of the airway components, preventing the risk of cross-infection caused by residual contaminants, while reducing the overall replacement frequency due to structural damage.

[0087] It should be understood that although the terms "first," "second," and the like may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the exemplary embodiments.

[0088] The terms "outer," "middle," "inner," and so on, mentioned or possibly mentioned in this specification, are defined relative to the configurations shown in the accompanying drawings. They are relative concepts and may vary depending on the location or usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0089] The above description is only a preferred embodiment of the present application and does not limit the present application in any form or substance. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the method of the present application, and these improvements and supplements should also be considered as the scope of protection of the present invention. Any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the spirit and scope of the present application by using the technical content disclosed above are all equivalent embodiments of the present application; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present application are still within the scope of the technical solution of the present application.

Claims

1. An airway assembly, characterized in that: include: a first tube body having a first gas channel and a first tube opening communicating with the first gas channel and the outside; A second tube body having a second gas channel and a second tube opening and a detection hole connecting the second gas channel with the outside; The first tube body and one end facing away from the first tube opening are nested with the second tube body and one end facing away from the second tube opening. One of the first tube body and the second tube body is provided with at least one first clamping groove, and the other is provided with at least one first clamping block. The first clamping block is clamped in the first clamping groove. a filter screen having a plurality of meshes, located between the first tube body and the second tube body, wherein the meshes communicate with the first gas channel and the second gas channel; A one-way valve is detachably connected to the second pipe opening and is used to prevent external airflow from entering the second gas channel or to prevent the gas in the second gas channel from flowing to the outside.

2. The airway assembly according to claim 1, wherein The first clamping groove is provided on the first tube body, and the first clamping block is provided on the second tube body; the first clamping groove includes: a first inserting groove, formed on a side of the first tube body facing away from the first tube opening and extending along the axial direction of the first tube body; a first limiting groove, formed on an inner wall surface of the first plugging groove, located on a side of the first plugging groove facing away from the groove opening thereof, and extending along the circumference of the first tube body; The first clamping block can be inserted into the first insertion groove along the axial direction of the first tube body and rotated around the central axis of the first tube body into the first limiting groove.

3. The airway assembly according to claim 2, wherein: The first clamping block is provided with a limiting protrusion on one axial side of the second tube body, and the second groove body is provided with a limiting groove on one axial side of the first tube body. The limiting protrusion can be elastically engaged in the limiting groove when it rotates around the central axis of the first tube body into the first limiting groove.

4. The airway assembly according to claim 1, wherein The first tube body further has a first connection surface facing away from the first tube opening, and the first connection surface is provided with a first connection port connecting the first gas channel and the external space; The second tube body further has a second connecting surface facing away from the second tube opening, and the second connecting surface is provided with a second connecting port communicating with the second gas channel and the external space; The first connection surface and the second connection surface are arranged facing each other and spaced apart, one side surface of the filter is in contact with the first connection surface, and the other side surface is in contact with the second connection surface, and the mesh is connected with the first connection port and the second connection end to connect the first gas channel and the second gas channel.

5. The airway assembly according to claim 4, wherein: The first connection surface is provided with a first sealing ring, which surrounds the circumference of the first connection port and abuts against the surface of the filter screen facing the first connection surface; And / or, the second connection surface is provided with a second sealing ring, which surrounds the circumference of the second connection port and abuts against a surface of the filter screen facing the second connection surface.

6. The airway assembly according to claim 1, wherein The one-way valve comprises: The valve body has at least one vent hole and is nested with the second pipe opening of the second pipe body; one of the valve body and the second pipe body is provided with at least one second clamping groove, and the other is provided with at least one second clamping block, and the second clamping block is clamped in the second clamping groove; an elastic sealing gasket, partially connected to the valve body and covering the vent hole, capable of deforming to expose at least a portion of the vent hole when subjected to a force directed away from the valve body; When the one-way valve is used to prevent external airflow from entering the second gas channel, the elastic sealing gasket is arranged on the side of the valve body facing away from the first gas channel; when the one-way valve is used to prevent the gas in the second gas channel from flowing to the outside, the elastic sealing gasket is located on the side of the valve body facing the first gas channel.

7. The airway assembly according to claim 6, wherein: The second clamping block is protruding from the outer surface of the valve body; the second clamping groove is opened on the inner wall surface of the second tube body and includes: a second plugging slot, formed at the second end of the second tube body and extending along the axial direction of the second tube body; a second limiting groove, formed on an inner wall surface of the second limiting groove, located on a side of the second plugging groove facing away from the notch, and extending along the circumference of the second tube body; The second clamping block can be inserted into the second insertion groove along the circumference of the second tube body and rotated around the central axis of the second tube body into the second limiting groove.

8. The airway assembly according to claim 6, wherein: The valve body comprises: A support tube, which is hollow inside and open at both ends, and is nested with the second tube opening of the second tube body; A support member connected to the inner side of the support tube and provided with a plurality of the vent holes; Two limiting members are respectively arranged at the two ends of the support member in the axial direction of the support tube, and part of the elastic sealing pad can be limited between any one of the limiting members and the support member.

9. The airway assembly according to any one of claims 1 to 8, characterized in that The second tube body also has a third gas channel, which is annular and surrounds the circumference of the second gas channel. The inner wall surface of the second gas channel is provided with a plurality of air inlet holes connected to the third gas channel. The plurality of air inlet holes are arranged at intervals along the circumference of the third gas channel, and the detection hole is connected to the third gas channel.

10. A respiratory muscle strength detection device, characterized in that: The invention comprises the airway assembly according to any one of claims 1 to 9.

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