Independent inflatable exercise rehabilitation wheelchair for patient

Abstract

The invention relates to the technical field of rehabilitation wheelchairs, and discloses a patient independent inflation exercise rehabilitation wheelchair which comprises a wheelchair body, two first supporting plates are installed at the position, close to the back face, of the bottom end of the wheelchair body, a reciprocating lead screw penetrates through the two first supporting plates, and the reciprocating lead screw is rotationally connected with the two first supporting plates through bearings. The pedal plates on the two sides of the transmission box alternately move up and down by driving the linkage assembly to simulate the leg bending and stretching state when a human body walks, so that a patient can passively exercise the lower limbs regularly in the wheelchair moving process, muscle tension is effectively maintained, the joint motion range is enhanced, and neuromuscular coordination is stimulated; the pedal movement is synchronously converted into inflation and deflation power for extruding the air bags, pressing massage on the shanks is achieved, the synergistic effect not only strengthens the exercise effect, but also remarkably promotes blood circulation and lymphatic backflow of the legs, edema is relieved, thrombosis is prevented, rehabilitation training and physical therapy are combined, and rehabilitation efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of rehabilitation wheelchair technology, specifically, it relates to an independent inflatable rehabilitation wheelchair for patients to exercise. Background Technology

[0002] As an important means of transportation for patients with mobility impairments, wheelchairs have long focused on enabling movement. However, for patients who need rehabilitation after surgery, stroke, or long-term bed rest, traditional wheelchairs only solve the problem of transfer but cannot provide any active or passive rehabilitation intervention during the movement process. The lack of effective activity in the lower limbs of patients for a long time can easily lead to a series of complications such as muscle atrophy, joint stiffness, poor blood circulation, and degeneration of nerve function, which seriously delays the rehabilitation process and may even trigger a secondary health crisis.

[0003] To address these issues, although some wheelchairs with simple pedal exercise functions have appeared on the market, their designs are often crude, and their exercise modes are limited, usually only requiring simultaneous pedaling of both legs. This fails to simulate a more physiologically accurate alternating gait and lacks an active intervention mechanism for the physiological state of the legs during exercise, such as muscle fatigue and blood circulation. On the other hand, physical therapy methods for the lower limbs, such as manual massage or pneumatic circulation therapy devices, have been proven to effectively promote blood return and relieve edema and pain. However, these devices are usually independent, bulky, and require static use, making it impossible to combine them with mobile or dynamic exercise. Therefore, we propose a patient-independent inflatable exercise rehabilitation wheelchair. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an independent inflatable exercise and rehabilitation wheelchair for patients.

[0005] The basic concept of the technical solution adopted in this invention is: An independent inflatable rehabilitation wheelchair for patients includes a wheelchair body. Two support plates are mounted on the bottom end of the wheelchair body near the back. A reciprocating screw runs through the two support plates and is rotatably connected to the two support plates via bearings. Rear wheels are mounted on both ends of the reciprocating screw. An L-shaped connecting plate is mounted on the bottom end of the wheelchair body near the front. A base plate is mounted on the bottom end of the L-shaped connecting plate. A front wheel is mounted on the bottom end of the base plate. A transmission box is mounted on the top middle section of the base plate. Both sides of the transmission box are provided with pedaling exercise mechanisms for the patient to step on with one foot. A drive linkage component is provided between the pedaling mechanism and the reciprocating screw.

[0006] In a preferred embodiment of the present invention, the drive linkage assembly includes a motor, a first spur gear, and a second spur gear. An L-shaped fixing plate is installed near the back of the bottom of the wheelchair body. The motor is installed on the bottom of the inner wall of the L-shaped fixing plate. A reciprocating screw is connected to the motor. A movable plate is fitted on the outer wall of the reciprocating screw. A limiting rod is installed between the two first support plates, and the limiting rod movably passes through the movable plate. A rack plate is installed at the bottom of the movable plate. The first spur gear meshes with the first rack plate. A housing is provided outside the reciprocating screw. The housing is installed between the two first support plates. A controller is installed on the back of the housing. A connecting shaft is installed on the front of the first gear, and the connecting shaft movably passes through the front of the housing and the back of the transmission box. The second spur gear is installed on the front of the connecting shaft and is located inside the transmission box. A rack plate is hinged to both sides of the second gear, and the rack plate is slidably connected to the inner wall of the transmission box. Two second support plates are installed at the bottom of the wheelchair body. Both second support plates are rotatably fitted on the outer wall of the connecting shaft through bearings. The controller is electrically connected to the motor.

[0007] In a preferred embodiment of the present invention, a rotating shaft is installed at the output end of the motor. The rotating shaft movably passes through the back of the outer casing, and a bevel gear is installed at one end of the rotating shaft. A bevel gear is fixedly sleeved on the outer wall of the reciprocating screw. The bevel gear and the bevel gear mesh. By setting the bevel gear and the bevel gear, the rotating shaft can drive the reciprocating screw to rotate through the bevel gear and the bevel gear.

[0008] In a preferred embodiment of the present invention, a limiting slide plate is installed on the outer wall of the rack plate 2, and a limiting groove is formed on the inner wall of the transmission box. The limiting slide plate is slidably connected to the limiting groove. By setting the limiting slide plate, the rack plate 2 can be limited, so that the rack plate 2 can be fixedly slid in the transmission box.

[0009] In a preferred embodiment of the present invention, the foot-feeding exercise mechanism includes a footboard, a connecting block installed between the footboard and the outer sides of the rack plate, a connecting port opened on one side of the fixed box, the connecting block movably passing through the connecting port, and a compression massage structure provided near both sides at the top of the footboard; the compression massage structure includes a clamping plate and a compression airbag, the compression airbag is installed inside the clamping plate, a piston chamber is opened inside the clamping plate, a vent is opened between the compression airbag and the inner wall of the piston chamber, a piston plate is slidably connected to the inner wall of the piston chamber, a connecting frame is installed at the bottom end of the piston plate, a movable opening is opened between the bottom end of the clamping plate and the inner wall of the piston chamber, a moving groove is opened on the footboard, the connecting frame movably passes through the movable opening and the moving groove respectively, and the connecting frame is installed at the top of the base plate, a connecting frame is installed at the bottom end of the clamping plate, and the connecting frame is slidably connected to the top of the footboard.

[0010] In a preferred embodiment of the present invention, a T-shaped slider is installed at the bottom of the connecting frame, and a T-shaped groove is provided at the top of the foot plate. The T-shaped slider is slidably connected to the T-shaped groove. By setting the T-shaped slider, the connecting frame can be limited, so that the connecting frame can be fixedly slid on the foot plate.

[0011] In a preferred embodiment of the present invention, there are two T-shaped sliders and two T-shaped grooves, and the T-shaped sliders and T-shaped grooves are adapted to each other.

[0012] In a preferred embodiment of the present invention, a fixing groove is provided at the top of the foot plate, and a fastening bolt is threaded into the threaded hole at the bottom of the connecting frame. The bottom end of the fastening bolt is inserted into the fixing groove. By setting the fastening bolt, the fastening bolt can squeeze the fixing groove to fix the connecting frame, thereby fixing the position of the clamping plate.

[0013] Compared with the prior art, the present invention has the following advantages: This invention uses a drive linkage component to make the footplates on both sides of the transmission box move up and down alternately, simulating the flexion and extension of the legs when walking. This allows patients to passively perform regular lower limb exercises while moving in a wheelchair, effectively maintaining muscle tension, enhancing joint mobility, and stimulating neuromuscular coordination. At the same time, the footplate movement is converted into the inflation and deflation of the airbag, achieving pressure massage on the calves. This synergistic effect not only enhances the exercise effect but also significantly promotes blood circulation and lymphatic return in the legs, helping to relieve edema and prevent thrombosis. It integrates rehabilitation training and physical therapy, improving rehabilitation efficiency.

[0014] This invention features a flexible adjustment mechanism in its compression massage structure, allowing for personalized fit based on the different leg sizes of patients. By loosening the fastening bolts, the clamp can slide freely along the T-shaped groove on the footplate, quickly adjusting the distance between the compression airbags on both sides to ensure a close fit to the patient's lower leg. This design fully considers the differences in patient body shape, ensuring the targeted and comfortable massage, making the device widely applicable to various groups of people, and significantly improving the individual fit and user experience of rehabilitation training.

[0015] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged structural diagram of section A in the middle; Figure 3 This is a front cross-sectional view of the transmission box of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram of section B; Figure 5 This is a cross-sectional view of the outer casing and transmission box of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram of section C; Figure 7 For the present invention Figure 5 Enlarged structural diagram of section D in the middle; Figure 8 This is a schematic cross-sectional view of the transmission box of the present invention. Figure 9 For the present invention Figure 8 Enlarged structural diagram of section E in the middle; Figure 10 This is a schematic cross-sectional view of the side of the footplate of the present invention; Figure 11 For the present invention Figure 10 Enlarged structural diagram of the middle F section.

[0017] In the diagram: 1. Wheelchair body; 2. Base plate; 3. L-shaped connecting plate; 4. Support plate one; 5. Rear wheel; 6. Reciprocating screw; 7. Transmission box; 8. Outer shell; 9. Moving plate; 10. Limiting rod; 11. Rack plate one; 12. Spur gear one; 13. Coupling shaft; 14. Support plate two; 15. L-shaped fixing plate; 16. Motor; 17. Rotating shaft; 18. Bevel gear one; 19. Bevel gear two; 20. Spur gear two; 21. Rack plate two 22. Connecting block; 23. Connecting port; 24. Step plate; 25. Clamping plate; 26. Connecting frame; 27. Piston chamber; 28. Piston plate; 29. ​​Connecting frame; 30. Compression airbag; 31. Vent hole; 32. Limiting slide plate; 33. Limiting slide groove; 34. Moving groove; 35. T-shaped slider; 36. T-shaped slide groove; 37. Fastening bolt; 38. Fixed slide groove; 39. Front wheel; 40. Controller; 41. Movable port. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0019] like Figures 1 to 11As shown, the present invention provides a technical solution: an independent inflatable exercise and rehabilitation wheelchair for patients, including a wheelchair body 1. Two support plates 4 are installed at the bottom end of the wheelchair body 1 near the back. A reciprocating screw 6 passes through the two support plates 4 and is rotatably connected to the two support plates 4 by bearings. Rear wheels 5 are installed at both ends of the reciprocating screw 6. An L-shaped connecting plate 3 is installed at the bottom end of the wheelchair body 1 near the front. A base plate 2 is installed at the bottom end of the L-shaped connecting plate 3. A front wheel 39 is installed at the bottom end of the base plate 2. A transmission box 7 is installed in the middle of the top of the base plate 2. Both sides of the transmission box 7 are provided with a pedaling exercise mechanism for the patient to step on with one foot. A drive linkage component is provided between the pedaling component and the reciprocating screw 6.

[0020] Furthermore, the drive linkage assembly includes a motor 16, a first spur gear 12, and a second spur gear 20. An L-shaped fixing plate 15 is installed near the back of the wheelchair body 1. The motor 16 is installed on the bottom of the inner wall of the L-shaped fixing plate 15. A reciprocating screw 6 is connected to the motor 16. A movable plate 9 is fitted onto the outer wall of the reciprocating screw 6. A limiting rod 10 is installed between the two support plates 4, and the limiting rod 10 movably passes through the movable plate 9. A rack plate 11 is installed at the bottom of the movable plate 9, and the first spur gear 12 meshes with the rack plate 11. A housing 8 is provided outside the reciprocating screw 6. 8 is installed between two support plates 4. The controller 40 is installed on the back of the outer shell 8. The gear 1 is mounted on the front and the connecting shaft 13 is movably connected through the front of the outer shell 8 and the back of the transmission box 7. The spur gear 20 is mounted on the front of the connecting shaft 13 and is located inside the transmission box 7. The gear 2 is hinged to both sides with rack plates 21 and the rack plates 21 are slidably connected to the inner wall of the transmission box 7. Two support plates 24 are installed at the bottom of the wheelchair body 1. Both support plates 24 are rotatably sleeved on the outer wall of the connecting shaft 13 through bearings. The controller 40 is electrically connected to the motor 16.

[0021] Furthermore, a rotating shaft 17 is installed at the output end of the motor 16. The rotating shaft 17 moves through the back of the outer casing 8, and a bevel gear 18 is installed at one end of the rotating shaft 17. A bevel gear 2 19 is fixedly sleeved on the outer wall of the reciprocating screw 6. The bevel gear 18 meshes with the bevel gear 2 19. Specifically, by setting bevel gear 18 and bevel gear 2 19, the rotating shaft 17 can drive the reciprocating screw 6 to rotate through bevel gear 18 and bevel gear 2 19.

[0022] Furthermore, a limiting slide plate 32 is installed on the outer wall of the rack plate 21, and a limiting groove 33 is opened on the inner wall of the transmission box 7. The limiting slide plate 32 and the limiting groove 33 are slidably connected. Among them, by setting the limiting slide plate 32, the rack plate 21 can be limited, so that the rack plate 21 can be fixed and slid in the transmission box 7.

[0023] Furthermore, the foot-step exercise mechanism includes a footboard 24, with a connecting block 22 installed between the footboard 24 and the outer side of the rack plate 21. A connecting port 23 is opened on one side of the fixed box, and the connecting block 22 movably passes through the connecting port 23. The top of the footboard 24 is provided with a compression massage structure near both sides. The compression massage structure includes a clamping plate 25 and a compression airbag 30. The compression airbag 30 is installed inside the clamping plate 25, and a piston chamber 27 is opened inside the clamping plate 25. A vent hole 31 is opened between the compression airbag 30 and the inner wall of the piston chamber 27. A piston plate 28 is slidably connected to the inner wall of the piston chamber 27. A connecting frame 29 is installed at the bottom of the piston plate 28. A movable opening 41 is opened between the bottom of the clamping plate 25 and the inner wall of the piston chamber 27. A moving groove 34 is opened on the footboard 24. The connecting frame 29 movably passes through the movable opening 41 and the moving groove 34 respectively, and the connecting frame 29 is installed at the top of the base plate 2. A connecting frame 26 is installed at the bottom of the clamping plate 25, and the connecting frame 26 is slidably connected to the top of the footboard 24.

[0024] Furthermore, a T-shaped slider 35 is installed at the bottom of the connecting frame 26, and a T-shaped groove 36 is opened at the top of the step plate 24. The T-shaped slider and the T-shaped groove 36 are slidably connected. The T-shaped slider 35 can limit the connection frame 24, allowing the connection frame 24 to slide fixedly on the footplate 24.

[0025] Furthermore, there are two T-shaped sliders 35 and two T-shaped grooves 36, and the T-shaped sliders 35 and T-shaped grooves 36 are matched.

[0026] Furthermore, a fixed groove 38 is provided at the top of the step plate 24, and a fastening bolt 37 is threaded into the threaded hole at the bottom of the connecting bracket 26, with the bottom end of the fastening bolt 37 inserted into the fixed groove 38. By setting fastening bolts 37, the fastening bolts 37 can press and fix the fixing groove 38, thereby fixing the connecting frame 26 and fixing the position of the clamping plate 25.

[0027] The implementation principle of an independent inflatable exercise and rehabilitation wheelchair for patients is as follows: First, the patient sits on the main body 1 of the wheelchair and places both feet on the footrests 24 on both sides of the transmission box 7. In order to adapt to the different leg sizes of patients and ensure comfort and effectiveness, the spacing of the two sets of compression massage structures on the footrests 24 can be adjusted. During operation, the fastening bolts 37 on the side plates 25 are loosened so that their bottom ends are released from the compression locking state of the fixed slide groove 38. Then, the connecting frame 26 can be slid directly along the T-shaped slide groove 36 on the top of the footrest 24, which drives the plates 25 and the inner compression airbags 30 to move towards the sides of the patient's lower legs. After the position is adjusted properly and can comfortably fit the legs, the fastening bolts 37 are tightened again so that their bottom ends are pressed into the fixed slide groove 38. The position of the plates 25 is firmly fixed by friction, and the adaptation is completed. Once ready, the patient can command the controller 40 via the remote control device. The controller 40 then starts the motor 16 mounted on the L-shaped fixing plate 15. The output shaft of the motor 16 drives the rotating shaft 17 to rotate. The bevel gear 18 at the front end of the rotating shaft 17 rotates accordingly and drives the bevel gear 19, which meshes with it and is fixed on the reciprocating screw 6. The bevel gear 19 drives the reciprocating screw 6 to rotate as a whole, thereby directly driving the rear wheels 5 mounted on both ends of it to rotate, providing the wheelchair with forward or backward power and realizing the patient's autonomous movement function. Simultaneously, the rotation of the reciprocating screw 6 causes the movable plate 9, which is threadedly fitted with it, to reciprocate linearly along the guide of the limiting rod 10 within the outer casing 8. The rack plate 11 at the bottom of the movable plate 9 reciprocates accordingly, driving the spur gear 12 meshing with it to rotate continuously clockwise and counterclockwise. The spur gear 12 transmits this reciprocating rotational motion to the spur gear 20 inside the transmission box 7 through the connecting shaft 13 that passes through the outer casing 8 and the transmission box 7. When the spur gear 20 reciprocates, the meshing rack plates 21 on both sides can only slide vertically under the constraint of the limiting slide plate 32 and the limiting slide groove 33. Therefore, they are driven by the spur gear 20 to make alternating up-and-down reciprocating linear motion. The two rack plates 21 are respectively fixed to the corresponding footplates 24 on the outside through the connecting block 22 of the movable through-connecting port 23. Finally, it is transformed into the two footplates 24 simulating the human walking posture and making alternating up-and-down reciprocating motion. The patient's feet follow the footplates 24, and the leg muscles are guided to make regular flexion and extension movements without active force. This effectively simulates gait, stimulates neuromuscular control, prevents muscle atrophy, and promotes joint mobility and blood circulation, realizing passive and safe cycling-style rehabilitation exercise.

[0028] Simultaneously, the up-and-down movement of the footplate 24 drives the compression massage function, achieving a combination of exercise and physiotherapy. When the footplate 24 moves downward under the drive, it drives the connecting frame 26 and the fixed clamping plate 25 to move downward together through the sliding connection between the T-shaped slider 35 and the T-shaped groove 36. Since the connecting frame 29 is fixed on the base plate 2 and does not move, the downward movement of the clamping plate 25 will cause the piston plate 28 inside it to slide upward relative to the piston chamber 27, thereby rapidly compressing the air in the upper part of the piston chamber 27. The compressed air is forced into the compression airbag that contacts the patient's leg through the vent 31. In step 30, the pressure applied to both sides of the calf is instantly inflated, creating a massage and squeezing effect. When stepping plate 24 moves upward, clamp plate 25 is lifted, piston plate 28 moves downward, negative pressure is generated in piston chamber 27, and air in squeezing airbag 30 is drawn back through vent 31, causing the airbag to deflate and the pressure to be released. This cycle continues as the feet alternately step, and the squeezing airbags 30 on both sides alternately inflate and deflate to massage. This massage can further promote deep blood circulation in the legs, relieve edema, stimulate sensory feedback, and greatly enhance the rehabilitation effect.

[0029] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A patient-independent inflatable exercise and rehabilitation wheelchair, comprising a wheelchair body (1), wherein two support plates (4) are installed at the bottom end of the wheelchair body (1) near the back, a reciprocating screw (6) passes through the two support plates (4), and the reciprocating screw (6) is rotatably connected to the two support plates (4) by bearings, and rear wheels (5) are installed at both ends of the reciprocating screw (6); an L-shaped connecting plate (3) is installed at the bottom end of the wheelchair body (1) near the front, a base plate (2) is installed at the bottom end of the L-shaped connecting plate (3), and a front wheel (39) is installed at the bottom end of the base plate (2), characterized in that, A transmission box (7) is installed in the middle of the top of the base plate (2). Both sides of the transmission box (7) are provided with a stepping exercise mechanism for the patient to step on with one foot. A drive linkage component is provided between the stepping component and the reciprocating screw (6).

2. The independent inflatable exercise and rehabilitation wheelchair for patients according to claim 1, characterized in that, The drive linkage assembly includes a motor (16), a spur gear one (12), and a spur gear two (20). An L-shaped fixing plate (15) is installed near the back of the bottom of the wheelchair body (1). The motor (16) is installed on the bottom of the inner wall of the L-shaped fixing plate (15). The reciprocating screw (6) is connected to the motor (16) in a transmission. A moving plate (9) is fitted on the outer wall of the reciprocating screw (6). A limit rod (10) is installed between the two support plates one (4). The limit rod (10) moves through the moving plate (9). A rack plate one (11) is installed at the bottom of the moving plate (9). The spur gear one (12) meshes with the rack plate one (11). A shell (8) is provided outside the reciprocating screw (6). 8) Installed between the two support plates (4), the controller (40) is installed on the back of the outer shell (8), the gear is installed on the front of the gear and the shaft (13) is movably connected through the front of the outer shell (8) and the back of the transmission box (7), the spur gear (20) is installed on the front of the shaft (13) and the spur gear (20) is set inside the transmission box (7), the gear is hinged on both sides of the gear and the rack plate (21) is slidably connected to the inner wall of the transmission box (7), the wheelchair body (1) is installed with two support plates (14) at the bottom, the two support plates (14) are rotatably sleeved on the outer wall of the shaft (13) through bearings, and the controller (40) is electrically connected to the motor (16).

3. The independent inflatable exercise and rehabilitation wheelchair for patients according to claim 2, characterized in that, The output end of the motor (16) is equipped with a rotating shaft (17), which moves through the back of the outer shell (8). One end of the rotating shaft (17) is equipped with a bevel gear (18), and the outer wall of the reciprocating screw (6) is fixedly fitted with a bevel gear (19). The bevel gear (18) meshes with the bevel gear (19).

4. The patient's independent inflatable exercise and rehabilitation wheelchair according to claim 2, characterized in that, The outer wall of the rack plate 2 (21) is fitted with a limiting slide plate (32), and the inner wall of the transmission box (7) is provided with a limiting groove (33). The limiting slide plate (32) and the limiting groove (33) are slidably connected.

5. The patient's independent inflatable exercise and rehabilitation wheelchair according to claim 2, characterized in that, The foot-feeding exercise mechanism includes a footboard (24), a connecting block (22) is installed between the footboard (24) and the outer side of the rack plate (21), a connecting port (23) is opened on one side of the fixed box, the connecting block (22) is movably inserted through the connecting port (23), and a compression massage structure is provided on both sides of the top of the footboard (24); the compression massage structure includes a clamping plate (25) and a compression airbag (30), the compression airbag (30) is installed on the inner side of the clamping plate (25), a piston chamber (27) is opened inside the clamping plate (25), and the compression airbag (30) communicates with the inner wall of the piston chamber (27). A vent hole (31) is provided. A piston plate (28) is slidably connected to the inner wall of the piston chamber (27). A connecting frame (29) is installed at the bottom end of the piston plate (28). A movable opening (41) is provided between the bottom end of the clamping plate (25) and the inner wall of the piston chamber (27). A moving groove (34) is provided on the foot plate (24). The connecting frame (29) movably passes through the movable opening (41) and the moving groove (34) respectively. The connecting frame (29) is installed at the top of the base plate (2). A connecting bracket (26) is installed at the bottom end of the clamping plate (25). The connecting bracket (26) is slidably connected to the top end of the foot plate (24).

6. The patient's independent inflatable exercise and rehabilitation wheelchair according to claim 5, characterized in that, The bottom of the connecting frame (26) is equipped with a T-shaped slider (35), and the top of the step plate (24) is provided with a T-shaped groove (36). The T-shaped slide plate is slidably connected to the T-shaped groove (36).

7. The patient's independent inflatable exercise and rehabilitation wheelchair according to claim 5, characterized in that, The number of T-shaped sliders (35) and T-shaped grooves (36) are both two, and the T-shaped sliders (35) and T-shaped grooves (36) are adapted to each other.

8. The patient's independent inflatable exercise and rehabilitation wheelchair according to claim 5, characterized in that, The top of the step plate (24) is provided with a fixed slide groove (38), and a fastening bolt (37) is threaded into the threaded hole at the bottom of the connecting frame (26). The bottom of the fastening bolt (37) is inserted into the fixed slide groove (38).

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