Resistance type lung function training device

By introducing an abdominal breathing training mechanism and a breathing resistance adjustment mechanism into the resistance-type lung function training equipment, the problem that existing equipment cannot distinguish between mouth and nose breathing has been solved, enabling targeted training and resistance adjustment of abdominal breathing, thus improving training effectiveness and convenience.

CN224307763UActive Publication Date: 2026-06-02THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
Filing Date
2025-07-17
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing resistance training equipment cannot distinguish between patients' mouth and nose breathing, and cannot specifically train abdominal breathing, resulting in poor training effects.

Method used

An resistance-type lung function training device was designed, which includes an abdominal breathing training mechanism, a breathing resistance adjustment mechanism, and a one-way breathing component. It trains abdominal breathing by distinguishing the patient's mouth and nose breathing modes and by adjusting the magnitude of breathing resistance.

Benefits of technology

It enables targeted training of patients' abdominal breathing, improves the effect of lung function training, and allows for convenient adjustment of training resistance, thus enhancing ease of use.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a kind of anti-resistance type lung function training equipment, belong to lung function rehabilitation training field, including shell;Shell is equipped with for the diaphragmatic breathing training mechanism of diaphragmatic breathing to patient;Shell is equipped with the respiratory resistance adjusting mechanism for the convenient adjustment of patient respiratory resistance;Diaphragmatic breathing training mechanism includes oral-nasal breathing component, one-way breathing component and training component;Shell, one-way breathing component and training component are connected with oral-nasal breathing component;Two groups of one-way breathing components are installed in oral-nasal breathing component inside;Oral-nasal breathing component is used to install one-way breathing component, one-way breathing component is used to make patient only use mouth to spit air, nose to inhale air;Training component is used to distinguish the air of patient's oral respiration and nasal respiration respectively enters oral-nasal breathing component. By the above mode, the utility model can realize effectively by diaphragmatic breathing training mechanism for training patient diaphragmatic breathing, more effectively improve lung function training effect.
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Description

Technical Field

[0001] This utility model relates to the field of pulmonary function rehabilitation training, specifically to an resistance pulmonary function training device. Background Technology

[0002] Resistance-assisted pulmonary function training (RAPT) devices are rehabilitation instruments that enhance respiratory muscle strength and endurance through adjustable resistance devices (such as threshold load or variable airflow resistance). They are suitable for patients with chronic lung diseases and those recovering from surgery. The core principle is to counteract resistance during inhalation / exhalation, stimulating the diaphragm and intercostal muscles to adapt and improve lung ventilation efficiency, thus delaying respiratory muscle fatigue. Typical devices include resistance adjustment valves, digital monitoring feedback, and a portable design. Clinical studies have shown that they can increase vital capacity and reduce the dyspnea index.

[0003] Chinese patent CN113144537B discloses a portable respiratory care lung function rehabilitation training device, including a shell, and further comprising: an air-blowing push plate assembly, which is slidably connected to a mounting part; a resistance mechanism, which is perpendicularly arranged to the air-blowing push plate assembly; and an adjustment component, which can change the angle between the contact surface of the resistance mechanism and the air-blowing push plate assembly and the horizontal plane. When the user uses the device, they push the air-blowing push plate assembly horizontally relative to a support to perform resistance training by blowing air. The resistance mechanism provides horizontal resistance to the air-blowing push plate assembly. When the user uses the device, they change the angle between the contact surface of the resistance mechanism and the air-blowing push plate assembly and the horizontal plane by adjusting the adjustment component, thereby changing the magnitude of the horizontal resistance when the air-blowing push plate assembly moves horizontally, thus achieving resistance adjustment during the movement of the air-blowing push plate assembly. However, this device still has the following problems:

[0004] Abdominal breathing is more effective in training patients' lung function during breathing training, but this device cannot distinguish between breathing through the patient's mouth and nose, nor can it provide targeted training in abdominal breathing.

[0005] Based on this, the present invention designs an resistance-type lung function training device to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an resistance-type lung function training device.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An resistance-type lung function training device, comprising a housing;

[0009] The housing is equipped with an abdominal breathing training mechanism for patients to perform abdominal breathing.

[0010] The housing is equipped with a breathing resistance adjustment mechanism for convenient adjustment of the patient's breathing resistance.

[0011] The abdominal breathing training mechanism includes a mouth and nose breathing component, a one-way breathing component, and a training component; the shell, the one-way breathing component, and the training component are all connected to the mouth and nose breathing component; both sets of one-way breathing components are installed inside the mouth and nose breathing component; the mouth and nose breathing component is used to install the one-way breathing component, and the one-way breathing component is used to enable the patient to exhale through the mouth and inhale through the nose; the training component is used to distinguish between the air from the patient's mouth breathing and nasal breathing and allow the air to enter the mouth and nose breathing component separately.

[0012] Furthermore, there are two sets of breathing resistance adjustment mechanisms; the two sets of breathing resistance adjustment mechanisms are arranged symmetrically, one above the other.

[0013] Furthermore, the mouth and nose breathing assembly includes a mouth breathing tube and a nose breathing tube; both the mouth breathing tube and the nose breathing tube are fixedly connected to the housing; the mouth breathing tube is located below the nose breathing tube; and both the mouth breathing tube and the nose breathing tube are connected to the interior of the housing; a set of one-way breathing components is installed inside both the mouth breathing tube and the nose breathing tube; both the mouth breathing tube and the nose breathing tube are connected to the training assembly.

[0014] Furthermore, the mouth breathing tube and the nose breathing tube are divided into a thick section and a thin section; the thick section of the mouth breathing tube is fixedly connected to the shell; and the thin section of the nose breathing tube is fixedly connected to the shell.

[0015] Furthermore, the one-way breathing assembly includes a slide rod, a spring, and a conical plate; the slide rod is slidably connected to the mouth and nose breathing tubes via a fixing plate installed on the inner wall of the thicker section of the mouth and nose breathing tubes; the spring is sleeved on the outside of the slide rod, a conical plate is fixedly installed at one end of the slide rod, one end of the spring is fixedly connected to the conical plate, and the other end of the spring is fixedly connected to the fixing plate installed on the inner wall of the thicker section of the mouth and nose breathing tubes; the conical plate abuts against the inner wall of the thinner section of the mouth and nose breathing tubes; the diameter of the conical plate is larger than the inner diameter of the thinner section of the mouth and nose breathing tubes but smaller than the inner diameter of the thicker section of the mouth and nose breathing tubes.

[0016] Furthermore, the training component includes a mask and a mouthpiece; the mask is fixedly connected to the end of the mouth and nose breathing tubes away from the shell; the mouthpiece is fixedly connected to and communicates with the end of the mouth breathing tubes away from the shell.

[0017] Furthermore, the breathing resistance adjustment mechanism includes a resistance component, a drive rotation component, and a filter clamping component; the housing, the drive rotation component, and the filter clamping component are all connected to the resistance component; the filter clamping component is connected to the housing; the resistance component is used to change the patient's breathing resistance; the drive rotation component is used to drive the resistance component to rotate; the filter clamping component is used to clamp the resistance component to the mouth breathing tube and the nose breathing tube.

[0018] Furthermore, the resistance component includes a variable resistance filter and a rotating shaft; the two rotating shafts are symmetrically arranged left and right, and both ends of the rotating shafts are rotatably connected to the housing; the two ends of the variable resistance filter are sleeved on the outside of the rotating shaft and fixedly connected to the rotating shaft respectively; the rotating shaft is connected to the drive rotation component; the variable resistance filter is connected to the filter screen abutment component; the holes of the variable resistance filter gradually decrease from left to right.

[0019] Furthermore, the drive rotation assembly includes a drive shaft, a turntable, and a transmission assembly; the two drive shafts are symmetrically arranged left and right; the drive shafts are fixedly connected to the turntable, the two drive shafts are connected by transmission assembly, and the end of one drive shaft away from the turntable is fixedly connected to the turntable.

[0020] Furthermore, the filter clamping assembly includes a screw and a clamping bracket; the screw is threadedly connected to the rear end of the housing via a threaded sleeve; the front end of the screw is fixedly connected to the clamping bracket; the front end of the clamping bracket abuts against the variable resistance filter, for pressing the variable resistance filter tightly against the rear end of the mouth breathing tube and the nose breathing tube.

[0021] Compared with the prior art, the advantages of this utility model are as follows: 1. This utility model can effectively train patients' abdominal breathing through the abdominal breathing training mechanism, and more effectively improve the lung function training effect.

[0022] 2. This utility model allows for convenient adjustment of the training breathing resistance by rotating the breathing resistance mechanism, making it more convenient for patients to use during training. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This utility model relates to a three-dimensional resistance-type lung function training device. Figure 1 ;

[0025] Figure 2 This is a front view of an resistance-type lung function training device according to the present invention;

[0026] Figure 3 This utility model relates to a three-dimensional resistance-type lung function training device. Figure 2 ;

[0027] Figure 4 For along Figure 2 A three-dimensional image with a portion removed along the AA direction;

[0028] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0029] Figure 6 This utility model relates to a three-dimensional resistance-type lung function training device. Figure 3 .

[0030] The labels in the diagram represent:

[0031] 1. Shell; 2. Abdominal breathing training mechanism; 21. Mouth and nose breathing assembly; 211. Mouth breathing tube; 212. Nasal breathing tube; 22. One-way breathing assembly; 221. Slide bar; 222. Spring; 223. Conical plate; 23. Training assembly; 231. Mask; 232. Mouthpiece; 3. Breathing resistance adjustment mechanism; 31. Resistance assembly; 311. Variable resistance filter; 312. Rotating shaft; 32. Drive rotation assembly; 321. Drive shaft; 322. Turntable; 323. Transmission assembly; 33. Filter screen clamping assembly; 331. Screw; 332. Clamping frame. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0033] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0034] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-6 An resistance-type lung function training device, comprising a housing 1;

[0035] The housing 1 is equipped with an abdominal breathing training mechanism 2 for patients to perform abdominal breathing.

[0036] The housing 1 is equipped with a breathing resistance adjustment mechanism 3 for convenient adjustment of the patient's breathing resistance; two sets of breathing resistance adjustment mechanisms 3 are arranged symmetrically above and below.

[0037] like Figure 2 and Figure 3As shown, the abdominal breathing training mechanism 2 includes a mouth and nose breathing component 21, a one-way breathing component 22, and a training component 23; the housing 1, the one-way breathing component 22, and the training component 23 are all connected to the mouth and nose breathing component 21; both sets of one-way breathing components 22 are installed inside the mouth and nose breathing component 21; the mouth and nose breathing component 21 is used to install the one-way breathing component 22, and the one-way breathing component 22 is used to enable the patient to exhale through the mouth and inhale through the nose; the training component 23 is used to distinguish between the air from the patient's mouth breathing and nasal breathing and allow the air to enter the mouth and nose breathing component 21 respectively.

[0038] In this invention, the patient wears the training component 23 on their face, and then the breathing gas is directed from the mouth and nose breathing component 21 into the one-way breathing component 22 through the training component 23 to control the patient to only exhale through the mouth and inhale through the nose, thereby training the patient to use mouth and nose breathing mode in abdominal breathing. When it is necessary to adjust the patient's breathing resistance, the breathing resistance adjustment mechanism 3 can be rotated to achieve convenient adjustment of the breathing resistance.

[0039] The oral-nasal breathing assembly 21 includes an oral breathing tube 211 and a nasal breathing tube 212; the oral breathing tube 211 and the nasal breathing tube 212 are divided into a thick section and a thin section; the thick section of the oral breathing tube 211 is fixedly connected to the housing 1; the oral breathing tube 211 is located below the nasal breathing tube 212; the thin section of the nasal breathing tube 212 is fixedly connected to the housing 1; and both the oral breathing tube 211 and the nasal breathing tube 212 are connected to the interior of the housing 1; a set of one-way breathing components 22 is installed inside both the oral breathing tube 211 and the nasal breathing tube 212; both the oral breathing tube 211 and the nasal breathing tube 212 are connected to the training component 23.

[0040] The one-way breathing assembly 22 includes a slide rod 221, a spring 222, and a conical plate 223. The slide rod 221 is slidably connected to the mouth breathing tube 211 and the nasal breathing tube 212 via a fixing plate installed on the inner wall of the coarse section of the mouth breathing tube 211 and the nasal breathing tube 212. The spring 222 is sleeved on the outside of the slide rod 221. The conical plate 223 is fixedly installed at one end of the slide rod 221. One end of the spring 222 is fixedly connected to the conical plate 223, and the other end of the spring 222 is fixedly connected to the fixing plate installed on the inner wall of the coarse section of the mouth breathing tube 211 and the nasal breathing tube 212. The conical plate 223 abuts against the inner wall of the thin section of the mouth breathing tube 211 and the nasal breathing tube 212. The diameter of the conical plate 223 is larger than the inner diameter of the thin section of the mouth breathing tube 211 and the nasal breathing tube 212, but smaller than the inner diameter of the coarse section of the mouth breathing tube 211 and the nasal breathing tube 212.

[0041] The training component 23 includes a mask 231 and a mouthpiece 232; the mask 231 is fixedly connected to the end of the mouth breathing tube 211 and the end of the nose breathing tube 212 away from the shell 1; the mouthpiece 232 is fixedly connected to and communicates with the end of the mouth breathing tube 211 away from the shell 1.

[0042] In this invention, the patient wears the outer ring of the mask 231 tightly against their face and then bites the mouthpiece 232. At this time, the patient exhales through the mouth breathing tube 211, which drives the slide rod 221 to limit the sliding compression spring 222 via the conical plate 223. When the patient inhales through their mouth, the conical plate 223 closes the thin section of the mouth breathing tube 211, preventing the patient from inhaling through their mouth. Similarly, the patient can only inhale through the nasal breathing tube 212 via the slide rod 221, spring 222, and conical plate 223, and cannot exhale, thereby training the patient's oral and nasal breathing mode in abdominal breathing.

[0043] Example 2: In some embodiments, such as Figure 2 and Figure 3 As shown, in a preferred embodiment of the present invention, the breathing resistance adjustment mechanism 3 includes a resistance component 31, a drive rotation component 32, and a filter screen clamping component 33; the housing 1, the drive rotation component 32, and the filter screen clamping component 33 are all connected to the resistance component 31; the filter screen clamping component 33 is connected to the housing 1; the resistance component 31 is used to change the patient's breathing resistance; the drive rotation component 32 is used to drive the resistance component 31 to rotate; the filter screen clamping component 33 is used to clamp the resistance component 31 against the mouth breathing tube 211 and the nose breathing tube 212;

[0044] The resistance assembly 31 includes a variable resistance filter 311 and a rotating shaft 312; the two rotating shafts 312 are symmetrically arranged from left to right, and both ends of the rotating shafts 312 are rotatably connected to the housing 1; the two ends of the variable resistance filter 311 are sleeved on the outside of the rotating shafts 312 and fixedly connected to the rotating shafts 312 respectively; the rotating shaft 312 is connected to the drive rotation assembly 32; the variable resistance filter 311 is connected to the filter screen pressing assembly 33; the holes of the variable resistance filter 311 gradually decrease from left to right.

[0045] The drive rotation assembly 32 includes a drive shaft 321, a turntable 322, and a transmission assembly 323; the two drive shafts 321 are symmetrically arranged on the left and right; the drive shafts 321 are fixedly connected to the turntable 312, and the two drive shafts 321 are connected by transmission assembly 323; one end of one drive shaft 321 away from the turntable 312 is fixedly connected to the turntable 322.

[0046] The filter screen clamping assembly 33 includes a screw 331 and a clamping frame 332; the screw 331 is threadedly connected to the rear end of the housing 1 through a threaded sleeve; the front end of the screw 331 is fixedly connected to the clamping frame 332; the front end of the clamping frame 332 abuts against the variable resistance filter 311, and is used to tightly attach the variable resistance filter 311 to the rear end of the mouth breathing tube 211 and the nose breathing tube 212.

[0047] In this invention, when it is necessary to change the magnitude of breathing resistance, the patient rotates screw 331 to cancel the contact between the clamping frame 332 and the variable resistance filter 311. At this time, the variable resistance filter 311 is not in contact with the mouth breathing tube 211 and the nasal breathing tube 212. Then, the rotating turntable 322 drives a drive shaft 321 to rotate. The two drive shafts 321 in a set of drive rotation components 32 are transmitted through the transmission component 323. The rotation of the drive shaft 321 drives the variable resistance filter 311 aligned with the mouth breathing tube 211 and the nasal breathing tube 212 to move. Then, the screw 331 is rotated so that the clamping frame 332 drives the variable resistance filter 311 to contact the mouth breathing tube 211 and the nasal breathing tube 212. Because the holes of the variable resistance filter 311 gradually decrease from left to right, the holes facing the mouth breathing tube 211 and the nasal breathing tube 212 decrease or increase, the air passage area decreases or increases, and the breathing resistance increases or decreases, thus achieving convenient adjustment of the magnitude of training breathing resistance.

[0048] Example 3: In some embodiments, such as Figure 3 As shown, in a preferred embodiment of the present invention, the transmission component 323 adopts a synchronous belt and synchronous pulley transmission component, and the two synchronous pulleys of the transmission component 323 are respectively fixedly connected to two drive shafts 321 in the same group of drive rotation components 32; to ensure the transmission effect between drive shafts 321.

[0049] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An resistance-type lung function training device, comprising a housing (1), characterized in that: It also includes an abdominal breathing training mechanism (2) and a breathing resistance adjustment mechanism (3); The housing (1) is equipped with an abdominal breathing training mechanism (2) for patients to perform abdominal breathing. The housing (1) is equipped with a breathing resistance adjustment mechanism (3) for convenient adjustment of the patient's breathing resistance; The abdominal breathing training mechanism (2) includes a mouth and nose breathing component (21), a one-way breathing component (22), and a training component (23); the housing (1), the one-way breathing component (22), and the training component (23) are all connected to the mouth and nose breathing component (21); both sets of one-way breathing components (22) are installed inside the mouth and nose breathing component (21); the mouth and nose breathing component (21) is used to install the one-way breathing component (22), and the one-way breathing component (22) is used to enable the patient to exhale through the mouth and inhale through the nose; the training component (23) is used to distinguish between the air from the patient's mouth breathing and nasal breathing and allow the air to enter the mouth and nose breathing component (21) respectively.

2. The resistance-type lung function training device according to claim 1, characterized in that, There are two sets of breathing resistance adjustment mechanisms (3); the two sets of breathing resistance adjustment mechanisms (3) are arranged symmetrically above and below.

3. The resistance-type lung function training device according to claim 1, characterized in that, The oral and nasal breathing assembly (21) includes an oral breathing tube (211) and a nasal breathing tube (212); both the oral breathing tube (211) and the nasal breathing tube (212) are fixedly connected to the housing (1); the oral breathing tube (211) is located below the nasal breathing tube (212); and both the oral breathing tube (211) and the nasal breathing tube (212) are connected to the inside of the housing (1); a set of one-way breathing components (22) is installed inside both the oral breathing tube (211) and the nasal breathing tube (212); both the oral breathing tube (211) and the nasal breathing tube (212) are connected to the training component (23).

4. The resistance-type lung function training device according to claim 3, characterized in that, The mouth breathing tube (211) and the nose breathing tube (212) are divided into a thick section and a thin section; the thick section of the mouth breathing tube (211) is fixedly connected to the shell (1); the thin section of the nose breathing tube (212) is fixedly connected to the shell (1).

5. The resistance-type lung function training device according to claim 4, characterized in that, The one-way breathing assembly (22) includes a slide rod (221), a spring (222), and a conical plate (223); the slide rod (221) is slidably connected to the mouth breathing tube (211) and the nasal breathing tube (212) through a fixing plate installed on the inner wall of the thick section of the mouth breathing tube (211) and the nasal breathing tube (212); the spring (222) is sleeved on the outside of the slide rod (221), and a conical plate (223) is fixedly installed at one end of the slide rod (221), and one end of the spring (222) is connected to... The conical plate (223) is fixedly connected, and the other end of the spring (222) is fixedly connected to the fixing plate installed on the inner wall of the thick section of the mouth breathing tube (211) and the nose breathing tube (212); the conical plate (223) abuts against the inner wall of the thin section of the mouth breathing tube (211) and the nose breathing tube (212); the diameter of the conical plate (223) is larger than the inner diameter of the thin section of the mouth breathing tube (211) and the nose breathing tube (212) and smaller than the inner diameter of the thick section of the mouth breathing tube (211) and the nose breathing tube (212).

6. The resistance-type lung function training device according to claim 3, characterized in that, The training component (23) includes a mask (231) and a mouthpiece (232); the mask (231) is fixedly connected to the end of the mouth breathing tube (211) and the nasal breathing tube (212) away from the shell (1); the mouthpiece (232) is fixedly connected to and communicates with the end of the mouth breathing tube (211) away from the shell (1).

7. The resistance-type lung function training device according to claim 2, characterized in that, The breathing resistance adjustment mechanism (3) includes a resistance component (31), a drive rotation component (32), and a filter clamping component (33); the housing (1), the drive rotation component (32), and the filter clamping component (33) are all connected to the resistance component (31); the filter clamping component (33) is connected to the housing (1); the resistance component (31) is used to change the patient's breathing resistance; the drive rotation component (32) is used to drive the resistance component (31) to rotate; the filter clamping component (33) is used to clamp the resistance component (31) against the mouth breathing tube (211) and the nose breathing tube (212).

8. The resistance-type lung function training device according to claim 7, characterized in that, The resistance component (31) includes a variable resistance filter (311) and a rotating shaft (312); the two rotating shafts (312) are symmetrically arranged on the left and right, and both ends of the rotating shafts (312) are rotatably connected to the housing (1); the two ends of the variable resistance filter (311) are sleeved on the outside of the rotating shafts (312) and fixedly connected to the rotating shafts (312); the rotating shafts (312) are connected to the drive rotation component (32); the variable resistance filter (311) is connected to the filter screen pressing component (33); the holes of the variable resistance filter (311) gradually decrease from left to right.

9. The resistance-type lung function training device according to claim 8, characterized in that, The drive rotation assembly (32) includes a drive shaft (321), a turntable (322), and a transmission assembly (323); the two drive shafts (321) are arranged symmetrically on the left and right; the drive shaft (321) is fixedly connected to the rotating shaft (312), the two drive shafts (321) are connected by transmission assembly (323), and one end of the drive shaft (321) away from the rotating shaft (312) is fixedly connected to the turntable (322).

10. The resistance-type lung function training device according to claim 7, characterized in that, The filter clamping assembly (33) includes a screw (331) and a clamping bracket (332); the screw (331) is threadedly connected to the rear end of the housing (1) via a threaded sleeve; the front end of the screw (331) is fixedly connected to the clamping bracket (332); the front end of the clamping bracket (332) abuts against the variable resistance filter (311) to tightly press the variable resistance filter (311) against the rear ends of the mouth breathing tube (211) and the nose breathing tube (212).