Lung rehabilitation assisting device

Abstract

The invention discloses a lung rehabilitation assisting device which comprises a body, a moving mechanism arranged in the body and a force adjusting mechanism used for adjusting moving resistance of the moving mechanism, and is characterized in that the whole body is a circular cylinder with two open ends, and the moving mechanism comprises a piston part which is in sealed sliding connection with the inner wall of the body; the force adjusting mechanism comprises a rotating cylinder arranged at the first end of the body and a plurality of elastic pieces which are arranged on the rotating cylinder and have different elastic coefficients, the rotating cylinder is a cylinder body with an opening in one end, and the rotating cylinder is arranged at the first end of the body in a sleeving mode and is coaxially and rotationally connected with the body; when the second end of the body blows air into the inner cavity of the body to force the piston piece to slide in the body, the rotating cylinder is rotated to enable the different elastic pieces to be matched with the piston piece so as to adjust the resistance borne by the piston piece in the sliding process. The device is simple in structure, training strength can be adjusted conveniently, and training requirements of different patients can be met.

Description

Technical Field

[0001] This invention relates to the field of medical device assistive technology, specifically to a lung rehabilitation assistive device. Background Technology

[0002] Pulmonary rehabilitation is a multidisciplinary, comprehensive intervention approach for patients with symptomatic chronic respiratory diseases and declining daily living abilities. The scope of pulmonary rehabilitation is expanding beyond just lung disease patients. Breathing training is a method to ensure airway patency, improve respiratory muscle function, promote sputum expectoration and drainage, and enhance gas exchange efficiency. Human exhalation occurs when the pressure inside the lungs exceeds atmospheric pressure. Normal exhalation does not involve muscle contraction; however, during forceful exhalation, the internal intercostal muscles and abdominal muscles contract, maximizing lung pressure and allowing a large amount of carbon dioxide to be expelled. Pulmonary rehabilitation assistive devices train respiratory muscles by incorporating diaphragmatic breathing exercises to improve lung capacity and reshape respiratory muscle function. However, existing pulmonary rehabilitation assistive devices have a fixed breathing intensity, making them unsuitable for patients at different stages of rehabilitation and with varying respiratory capacities. Therefore, a new pulmonary rehabilitation assistive device is proposed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a pulmonary rehabilitation assistive device to solve the problem mentioned in the background art that existing pulmonary rehabilitation assistive devices are inconvenient to adjust the training intensity.

[0004] To solve the above-mentioned technical problems, the present invention adopts a basic solution as follows: a pulmonary rehabilitation assistive device, comprising a main body, a moving mechanism disposed within the main body, and a force adjustment mechanism for adjusting the moving resistance of the moving mechanism. The main body is a cylindrical body open at both ends. The moving mechanism includes a piston component that is slidably and sealingly connected to the inner wall of the main body. The force adjustment mechanism includes a rotating cylinder disposed at the first end of the main body and multiple elastic components with different elastic coefficients disposed on the rotating cylinder. The rotating cylinder is a cylindrical body open at one end, and is sleeved on the first end of the main body and rotatably connected to the main body coaxially. When air is blown into the inner cavity of the main body from the second end of the main body, forcing the piston component to slide within the main body, the rotating cylinder is rotated to allow different elastic components to cooperate with the piston component to adjust the magnitude of the resistance encountered by the piston component during sliding.

[0005] Furthermore, the elastic element includes a spring 1 arranged parallel to the axis of the rotating cylinder, and the axes of a plurality of spring 1s are evenly distributed on a circumference coaxial with the rotating cylinder. The first end of the spring 1 is fixedly connected to the inner bottom wall of the rotating cylinder, and the second end of the spring 1 is a free end.

[0006] Furthermore, the body includes an outer cylinder and an inner cylinder arranged coaxially, with a gap between the outer cylinder and the inner cylinder. The second end of the outer cylinder is sealed and fixedly connected to the second end of the inner cylinder. The first end of the inner cylinder is located inside the outer cylinder, and the plurality of springs are all located in the space between the inner wall of the inner cylinder and the inner wall of the outer cylinder.

[0007] Furthermore, the piston component includes a sliding column that is slidably and sealingly connected to the inner wall of the inner cylinder and a baffle that is fixedly connected to the sliding column. The baffle is horizontally disposed on the outside of the inner cylinder along the radial direction of the inner cylinder. The baffle is fixedly connected to the first end of the sliding column. A through groove is provided on the first end wall of the outer cylinder that slidably engages with the baffle. By rotating the rotating cylinder at different angles, different springs are aligned with the baffle.

[0008] Furthermore, the spring is fitted with a limiting cylinder to prevent the spring from shaking. The limiting cylinder is coaxially spaced with the spring. One end of the limiting cylinder is fixedly connected to the inner wall of the rotating cylinder. A through groove is vertically arranged on the cylinder wall of the limiting cylinder along the radial direction of the outer cylinder to allow the baffle to move up and down.

[0009] Furthermore, the pulmonary rehabilitation assistive device also includes a reading mechanism for reading training intensity and a recording mechanism for recording training values.

[0010] Furthermore, the reading mechanism includes a through groove three disposed on the cylinder wall of the rotating cylinder corresponding to the first spring. The through groove three is disposed close to the first spring, is parallel to the axial direction of the rotating cylinder, and penetrates one side of the cylinder wall along the radial direction of the rotating cylinder. When the rotating cylinder is rotated to align the first spring with the baffle, the through groove three corresponding to the first spring aligns with the first through groove. Scale lines and corresponding scale values ​​are respectively disposed on the outer wall of the rotating cylinder along the length direction of the through groove three. The magnitude of the scale value is set according to the elastic coefficient of the corresponding first spring so as to correctly reflect the force value when the length of the corresponding first spring is forced to change.

[0011] Furthermore, the recording mechanism includes a support plate and a sliding plate. The first end of the support plate is rotatably connected to the baffle. A movable plate is provided at the end of the support plate away from the baffle. The first end of the movable plate is hinged to the support plate. The second end of the movable plate is a free end. A torsion spring is provided on the support plate to force the free end of the movable plate to move closer to the sliding plate. A groove is recessed on the lower inner wall of the outer cylinder. The sliding plate is disposed in the groove. Several V-shaped grooves are arranged sequentially on the surface of the sliding plate facing the inner cylinder in a direction parallel to the axis of the outer cylinder. The length direction of the V-shaped grooves is perpendicular to the arrangement direction of the V-shaped grooves. Under the elastic force of the torsion spring, the free end of the movable plate is inclined towards the sliding plate and located in one of the V-shaped grooves so that the second end of the support plate is close to the outer wall of the inner cylinder. A push rod is provided on the outer cylinder wall along the radial direction of the outer cylinder. One end of the push rod is fixedly connected to the sliding plate. The other end of the push rod extends out of the outer cylinder. A second spring is provided on the outer wall of the outer cylinder to force the push rod to move away from the inner cylinder.

[0012] Furthermore, the lower end of the movable plate is configured as a tapered end.

[0013] Furthermore, the second end of the main body is provided with an air nozzle to facilitate the patient to blow air into the inner cavity of the inner cylinder.

[0014] Compared with existing technologies, the pulmonary rehabilitation assistive device of this solution has at least the following beneficial effects:

[0015] 1. This program has a simple structure, is easy to adjust the training intensity, and can meet the training needs of different patients.

[0016] 2. This method uses springs with different elastic coefficients to change the training intensity. When different training intensities are selected, different scale lines and corresponding scale values ​​will be automatically matched, making it convenient for patients to intuitively view the training intensity value.

[0017] 3. This solution does not require increasing the distance the slide moves to reflect the increase in training intensity, making the solution smaller and more portable.

[0018] 4. This solution automatically saves training data for each breath by setting up a recording mechanism, making it convenient for patients to view the data directly after training without having to pay attention to the scale lines during each training session. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1This is a schematic diagram of the structure of a lung rehabilitation assistive device according to the present application, viewed from the front.

[0021] Figure 2 yes Figure 1 Enlarged view of section A.

[0022] Figure 3 yes Figure 1 Enlarged view of section B in the middle.

[0023] Figure 4 yes Figure 1 Sectional view of AA.

[0024] Figure 5 yes Figure 1 BB section view.

[0025] Figure 6 yes Figure 1 CC section view.

[0026] Figure 7 This is a schematic diagram of the structure after the slider is slid due to air blowing.

[0027] Figure 8 This is a schematic diagram of the structure when the push rod is pressed.

[0028] Figure 9 yes Figure 8 Enlarged view of section C in the image.

[0029] Figure 10 This device is in Figure 7 A schematic diagram of the scale lines when viewed from the left in the specified state.

[0030] The meanings of the labels in the attached diagram are as follows:

[0031] Body-10; outer cylinder-101; slot one-1011; inner cylinder-102;

[0032] Sliding column-201; baffle-202;

[0033] Rotary drum-301; Spring 1-302; Limiting cylinder-303; Through groove 2-3031;

[0034] Through slot 3-401; Scale line-402;

[0035] Support plate - 501; Slide plate - 502; Movable plate - 503; Groove - 504; V-groove - 505; Push rod - 506; Spring 2 - 507;

[0036] Air valve 60. Detailed Implementation

[0037] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0039] This embodiment provides a pulmonary rehabilitation assistive device, such as... Figures 1 to 10 As shown, it includes a body 10, a moving mechanism disposed within the body 10, a force adjustment mechanism for adjusting the moving resistance of the moving mechanism, a reading mechanism for reading the training force, and a recording mechanism for recording the training value.

[0040] Combination Figure 1 , Figure 4 , Figure 5 , Figure 6 As shown, the main body 10 is a circular cylinder with openings at both ends. Specifically, the main body 10 includes an outer cylinder 101 and an inner cylinder 102 coaxially arranged. Both the outer cylinder 101 and the inner cylinder 102 are circular cylinders with openings at both ends. The second end of the outer cylinder 101 is sealed and fixedly connected to the second end of the inner cylinder 102. The second end of the inner cylinder 102 is provided with a nozzle 60 for blowing gas into the inner cavity of the inner cylinder 102. The other parts of the outer cylinder 101 and the other parts of the inner cylinder 102 are spaced apart. The length of the inner cylinder 102 is less than the length of the outer cylinder 101, so that the first end of the inner cylinder 102 is located inside the outer cylinder 101.

[0041] Combination Figure 1 , Figure 5As shown, the moving mechanism includes a piston component that is slidably and sealingly connected to the inner wall of the body 10. Specifically, the piston component includes a slide column 201 that is slidably and sealingly connected to the inner wall of the inner cylinder 102 and a baffle 202 that is fixedly connected to the slide column 201. The baffle 202 is horizontally arranged on the outside of the inner cylinder 102 along the radial direction. The baffle 202 is fixedly connected to the first end of the slide column 201. A through groove 1011 that slidably engages with the baffle 202 is provided on the first end wall of the outer cylinder 101. The through groove 1011 penetrates one side wall of the outer cylinder 101 along the radial direction and penetrates the first end wall of the outer cylinder 101 along the axial direction. The end of the baffle 202 away from the slide column 201 is located in the through groove 1011 and slidably connected to the through groove 1011.

[0042] like Figure 1 , Figure 4 , Figure 5As shown, the force adjustment mechanism includes a rotating cylinder 301 disposed at the first end of the body 10 and multiple elastic elements with different elastic coefficients disposed on the rotating cylinder 301. The rotating cylinder 301 is a cylinder with one open end, and is sleeved on the first end of the body 10 and rotatably connected to the body 10 coaxially. Rotational damping is provided between the rotating cylinder 301 and the outer cylinder 101 to prevent the rotating cylinder 301 from rotating automatically. The elastic elements include springs 302 arranged parallel to the axis of the rotating cylinder 301. Multiple springs 302 are located in the space between the inner wall of the inner cylinder 102 and the inner wall of the outer cylinder 101, and the axes of the multiple springs 302 are evenly distributed on a circumference coaxial with the rotating cylinder 301. In this embodiment, four springs 302 are evenly distributed, and adjacent springs 302 are spaced 90 degrees apart. In other embodiments... In this example, there can be 3, 5, 6, or other numbers of springs 302, which will not be described in detail here. The first end of the spring 302 is fixedly connected to the inner bottom wall of the rotating cylinder 301, and the second end of the spring 302 is a free end. The spring 302 is fitted with a limiting cylinder 303 to prevent the spring 302 from shaking. The limiting cylinder 303 has open ends and is coaxially spaced with the spring 302. One end of the limiting cylinder 303 is fixedly connected to the inner wall of the rotating cylinder 301. The limiting cylinder 303 has a through groove 3031 that allows the baffle 202 to move up and down vertically. The through groove 3031 passes through the limiting cylinder 303 radially along the outer cylinder 101 and passes through the limiting cylinder 303 along the axis of the limiting cylinder 303 in a direction away from the closed end of the rotating cylinder 301. The space between the inner wall of the inner cylinder 102 and the inner wall of the outer cylinder 101 refers to the space between the cylindrical surface formed by the extension of the inner wall of the inner cylinder 102 and the cylindrical surface formed by the extension of the inner wall of the outer cylinder 101. The limiting cylinder 303 is also located in this space to prevent the limiting cylinder 303 from interfering with the sliding column 201.

[0043] like Figure 7 , Figure 8 As shown, by rotating the rotating cylinder 301 to align different springs 302 with the baffle 202, the through groove 3031 on the limiting cylinder 303 aligns with the through groove 1011 on the outer cylinder 101. When air is blown into the inner cavity of the inner cylinder 102 from the second end through the air nozzle 60, forcing the sliding column 201 to slide inside the inner cylinder 102, the sliding column 201 drives the baffle 202 to move to squeeze the spring 302 aligned with the baffle 202. Different springs 302 are aligned with the baffle 202 to adjust the resistance encountered by the sliding column 201 when sliding inside the inner cylinder 102. When the sliding column 201 slides, the baffle 202 slides in the through groove 3031 in the corresponding limiting cylinder 303 and the through groove 1011 in the outer cylinder 101.

[0044] Combination Figure 1 , Figure 4 , Figure 5 , Figure 10 As shown, the reading mechanism includes a through groove 401 on the wall of the rotating cylinder 301 corresponding to the spring 302. The through groove 401 is located close to the spring 302, parallel to the axial direction of the rotating cylinder 301, and passes through one side wall of the rotating cylinder 301 radially. When the rotating cylinder 301 is rotated to align the spring 302 with the baffle 202, the through groove 401 corresponding to the spring 302 aligns with the through groove 1011. Scale lines 402 and corresponding scale values ​​are respectively set on the outer wall of the rotating cylinder 301 along the length direction of the through groove 401. The magnitude of the scale value is set according to the elastic coefficient of the corresponding spring 302 to correctly reflect the force value when the length of the corresponding spring 302 is forced to change.

[0045] Such as combination Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 , Figure 9As shown, the recording mechanism includes a support plate 501 and a sliding plate 502. The first end of the support plate 501 is rotatably connected to the baffle 202, causing the lower end of the support plate 501 to move closer to or further away from the inner cylinder 102 when the support plate 501 rotates. A movable plate 503 is provided at the end of the support plate 501 away from the baffle 202. The first end of the movable plate 503 is hinged to the support plate 501, and the second end of the movable plate 503 is a free end. The lower end of the movable plate 503 is tapered. A torsion spring is provided on the support plate 501 to force the free end of the movable plate 503 closer to the sliding plate 502. The outer cylinder 1... A groove 504 is recessed on the lower inner wall of the outer cylinder 101. The sliding plate 502 is disposed within the groove 504. Several V-shaped grooves 505 are sequentially arranged on the surface of the sliding plate 502 facing the inner cylinder 102, parallel to the axis of the outer cylinder 101. The length direction of the V-shaped grooves 505 is perpendicular to their arrangement direction. The groove 504 is a rectangular groove parallel to the axis of the outer cylinder 101. The sliding plate 502 is a rectangular plate that slides within the groove 504. When the sliding plate 502 slides within the groove 504, it moves towards or away from the inner cylinder 102. Under the elastic force of the torsion spring, the free end of the movable plate 503 is inclined towards the slide plate 502 and located in a V-groove 505 so that the second end of the support plate 501 is close to the outer wall of the inner cylinder 102 to prevent the support rod from moving towards the second end of the outer cylinder 101. A push rod 506 is arranged radially on the wall of the outer cylinder 101. One end of the push rod 506 is fixedly connected to the slide plate 502, and the other end of the push rod 506 extends out of the outer cylinder 101. A second spring 507 is provided on the outer wall of the outer cylinder 101 to force the push rod 506 to move away from the inner cylinder 102. Spring 507 is fitted around push rod 506. One end of spring 507 is fixedly connected to the outer wall of outer cylinder 101, and the other end of spring 507 is fixedly connected to push rod 506. Under the elastic force of spring 507, push rod 506 moves away from inner cylinder 102, causing slide plate 502 to approach the inner wall of groove 504. At this time, the distance between slide plate 502 and outer wall of inner cylinder 102 increases, causing the lower end of movable plate 503 to tilt and be positioned in V-groove 505 under the torque of torsion spring. When push rod 506 is pressed, push rod 506 forces slide plate 503 to move closer to inner cylinder 102 and pushes the lower end of movable plate 503 to rotate closer to inner cylinder 102. Figure 9 As shown, when the slide plate 502 slides to a certain distance, the lower end of the movable plate 503 rotates to the state of disengaging from the V-groove 505. At this time, under the elastic force of the spring 302, the baffle 202 and the sliding column 201 slide towards the second end of the inner cylinder 102 until the baffle 202 contacts the first end face of the inner cylinder 102 and stops.

[0046] When using the pulmonary rehabilitation assistive device of this application, according to the patient's respiratory capacity, the rotating cylinder 301 is rotated to align the appropriate spring 302 with the baffle 202. The through groove 401 on the rotating cylinder 301 aligns with the through groove 3031 on the limiting cylinder 303 and the through groove 1011 on the outer cylinder 101. When air is blown into the inner cavity of the inner cylinder 102 through the air nozzle 60, forcing the sliding column 201 to slide within the inner cylinder 102, the sliding column 201 drives the baffle 202 to move, compressing the spring 302 aligned with the baffle 202. As the sliding column 201 slides, the baffle 202... The through groove 3031 in the limiting cylinder 303 slides with the through groove 1011 in the outer cylinder 101. The support plate 501 drives the movable plate 503 to slide along with the baffle 202. The free end of the movable plate 503 continuously passes over the V-groove 505. When the patient blows air forcefully, the sliding column 201 can no longer overcome the elastic force of the spring 302, the sliding column 201 stops sliding, and the patient stops blowing air. At this time, the movable plate 503 is located in the V-groove 505, so the spring 302 cannot force the support rod to move towards the second end of the inner cylinder 102. Therefore, when the patient stops blowing air, the sliding column 201 remains stationary. Figure 10 As shown, the patient can check the position of the baffle 202 through the through groove 3 401, and then know the force used to slide the baffle 202 to that position by the scale line 402 on the rotating cylinder 301 and the corresponding scale reading, and thus determine the intensity of the patient's training.

[0047] The above are merely embodiments of the present invention, and common knowledge regarding specific structures and characteristics in the solutions is not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A pulmonary rehabilitation assistive device, comprising a body, a moving mechanism disposed within the body, and a force adjustment mechanism for adjusting the moving resistance of the moving mechanism, characterized in that: The main body is a cylindrical body with openings at both ends. The moving mechanism includes a piston that is slidably and sealingly connected to the inner wall of the main body. The force adjustment mechanism includes a rotating cylinder disposed at the first end of the main body and multiple elastic elements with different elastic coefficients disposed on the rotating cylinder. The rotating cylinder is a cylindrical body with one end open. The rotating cylinder is sleeved on the first end of the main body and rotatably connected to the main body on the same axis. When air is blown into the inner cavity of the main body from the second end of the main body to force the piston to slide within the main body, the rotating cylinder is rotated to allow different elastic elements to cooperate with the piston to adjust the resistance encountered by the piston during sliding.

2. The pulmonary rehabilitation assistive device as described in claim 1, characterized in that: The elastic element includes a spring 1 arranged parallel to the axis of the rotating cylinder. The axes of multiple spring 1s are evenly distributed on a circumference coaxial with the rotating cylinder. The first end of the spring 1 is fixedly connected to the inner bottom wall of the rotating cylinder, and the second end of the spring 1 is a free end.

3. The pulmonary rehabilitation assistive device as described in claim 2, characterized in that: The main body includes an outer cylinder and an inner cylinder arranged coaxially, with a gap between the outer cylinder and the inner cylinder. The second end of the outer cylinder is sealed and fixedly connected to the second end of the inner cylinder. The first end of the inner cylinder is located inside the outer cylinder. A plurality of springs are located in the space between the inner wall of the inner cylinder and the inner wall of the outer cylinder.

4. The pulmonary rehabilitation assistive device as described in claim 3, characterized in that: The piston assembly includes a sliding column that is slidably and sealingly connected to the inner wall of the inner cylinder and a baffle that is fixedly connected to the sliding column. The baffle is horizontally disposed on the outside of the inner cylinder along the radial direction of the inner cylinder. The baffle is fixedly connected to the first end of the sliding column. A through groove is provided on the first end wall of the outer cylinder that slidably engages with the baffle. By rotating the rotating cylinder at different angles, different springs are aligned with the baffle.

5. The pulmonary rehabilitation assistive device as described in claim 4, characterized in that: The spring is fitted with a limiting cylinder to prevent it from shaking. The limiting cylinder is coaxially spaced with the spring. One end of the limiting cylinder is fixedly connected to the inner wall of the rotating cylinder. A through groove is vertically arranged on the cylinder wall along the radial direction of the outer cylinder to allow the baffle to move up and down.

6. The pulmonary rehabilitation assistive device as described in claim 5, characterized in that: The pulmonary rehabilitation assistive device also includes a reading mechanism for reading training intensity and a recording mechanism for recording training values.

7. The pulmonary rehabilitation assistive device as described in claim 6, characterized in that: The reading mechanism includes a through groove three disposed on the cylinder wall of the rotating cylinder corresponding to the first spring. The through groove three is disposed close to the first spring, is parallel to the axial direction of the rotating cylinder, and penetrates one side of the cylinder wall along the radial direction of the rotating cylinder. When the rotating cylinder is rotated to align the first spring with the baffle, the through groove three corresponding to the first spring aligns with the first through groove. Scale lines and corresponding scale values ​​are respectively disposed on the outer wall of the rotating cylinder along the length direction of the through groove three. The magnitude of the scale value is set according to the elastic coefficient of the corresponding first spring.

8. The pulmonary rehabilitation assistive device as described in claim 7, characterized in that: The recording mechanism includes a support plate and a sliding plate. The first end of the support plate is rotatably connected to the baffle. A movable plate is provided at the end of the support plate away from the baffle. The first end of the movable plate is hinged to the support plate. The second end of the movable plate is a free end. A torsion spring is provided on the support plate to force the free end of the movable plate to move closer to the sliding plate. A groove is recessed on the lower inner wall of the outer cylinder. The sliding plate is disposed in the groove. Several V-shaped grooves are arranged sequentially on the surface of the sliding plate facing the inner cylinder in a direction parallel to the axis of the outer cylinder. The length direction of the V-shaped grooves is perpendicular to the arrangement direction of the V-shaped grooves. Under the elastic force of the torsion spring, the free end of the movable plate tilts towards the sliding plate and is located in one of the V-shaped grooves so that the second end of the support plate is close to the outer wall of the inner cylinder. A push rod is provided on the outer cylinder wall along the radial direction of the outer cylinder. One end of the push rod is fixedly connected to the sliding plate. The other end of the push rod extends out of the outer cylinder. A second spring is provided on the outer wall of the outer cylinder to force the push rod to move away from the inner cylinder.

9. The pulmonary rehabilitation assistive device as described in claim 8, characterized in that: The lower end of the movable plate is set as a tapered end.

10. The pulmonary rehabilitation assistive device as described in claim 1, characterized in that: The second end of the main body is provided with an air nozzle to facilitate the patient to blow air into the inner cavity of the inner cylinder.

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