Rehabilitation training wheelchair and auxiliary use method thereof
By designing an adjustable rehabilitation training wheelchair, using Velcro, spring and spiral-fit training components, the problems of leg muscle atrophy and joint stiffness caused by long-term use of the wheelchair are solved, and effective leg rehabilitation training results are achieved.
Patent Information
- Application Number
- CN202411664776.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-03-11
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The long-term use of existing wheelchairs will cause problems such as muscle atrophy in the user's legs and joint stiffness.
A rehabilitation training wheelchair is designed, including adjustable placement plates and training components, which achieve multi-directional exercise of the patient's legs through Velcro, springs and spiral fit.
Through the design of the wheelchair, patients can effectively exercise their leg muscles, reduce the risk of muscle atrophy and joint stiffness, and improve the effect of rehabilitation training.
Smart Images
Figure CN119587283A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of rehabilitation wheelchairs, and in particular relates to a rehabilitation training wheelchair and an auxiliary use method thereof. Background Art
[0002] With the development of modern technology, people with lower limb injuries are no longer satisfied with using wheelchairs, crutches and other tools to assist walking. Most of them have begun to use medical scooters to replace traditional assisted walking tools.
[0003] Existing wheelchairs for long periods of time can have adverse effects on the user's posture and body, and can easily cause problems such as muscle atrophy and joint stiffness in the user's legs.
[0004] Therefore, it is necessary to invent a rehabilitation training wheelchair and an auxiliary use method thereof to solve the above problems. Summary of the invention
[0005] In view of the above problems, the present invention provides a rehabilitation training wheelchair and an auxiliary use method thereof to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rehabilitation training wheelchair, comprising a wheelchair body and a seat cushion placed on the wheelchair body, grab bars are arranged on both sides of the front side of the wheelchair body, the grab bars are arranged horizontally, and support rods are vertically fixed to the bottom of the grab bars, and the bottom ends of the support rods are rotatably connected to universal wheels, and the wheelchair body moves through the wheels and the universal wheels, and a placement plate is arranged between the bottom ends of the two support rods, and the placement plate comprises a first pedal and a second pedal, and the first pedal and the second pedal are arranged relatively parallel, and arc frames are installed at both ends of the placement plate, and the surface of the support rod cooperates with the arc frame by training components, and a patient sits on the seat cushion of the wheelchair body, and the patient's two feet are placed on the first pedal and the second pedal respectively, and the legs are exercised by the training components, and limiting components are installed on the first pedal and the second pedal, and the patient's feet are limitedly connected to the placement plate by the limiting components.
[0007] Furthermore, the limiting component includes two vertically arranged side rods, the surfaces of the two side rods are sleeved with welts, the inner concave surface of the welts corresponds to the position of the patient's heels, and Velcro is connected at both ends of the welts. The patient's feet are limited to the top of the placement board by the cooperation of the two Velcros.
[0008] Furthermore, two sleeves are fixed on the inner side of the first pedal, and two plug rods are fixed on the inner side of the second pedal. The two plug rods correspond to the two sleeves one by one, and the sleeves are correspondingly sleeved on the surfaces of the plug rods. A circular plate is fixed on the inner end of the plug rod, and the circular plate on the inner end of the plug rod slides inside the sleeve. Two relative ring pieces are fixed on the inner end of the sleeve, and the outer sides of the two ring pieces are rotatably sleeved with screw sleeves, which are spirally sleeved on the surface of the sleeve.
[0009] Furthermore, the training component includes a ring, which is correspondingly sleeved on the surface of the support rod, and a spring is sleeved on the surface of the ring, the bottom end of the spring is connected to the top surface of the ring, the top of the support rod is connected to a ring edge, the top of the spring is connected to the bottom surface of the ring edge, and an arc block is fixed on the outer side of the circumference of the ring, and the arc block is correspondingly inserted into the inner side of the arc frame.
[0010] Furthermore, a circular ring is fixed on the top of the arc frame, and the bottom of the arc frame is slidably sleeved on the surface of the arc block. A cross bar is horizontally inserted at the center of the circular ring, a push plate is fixed on the outer end of the cross bar, and a moving rod is fixed on the top surface of the push plate. The movable arc frame uses the circular ring to drive the cross bar to move.
[0011] Furthermore, the two arc-shaped frames correspond one to one with the two grab rods, the circumferential side of the grab rod is provided with an inner groove, the inner groove is slidably engaged with an inner block, a push rod is provided on the outer side of the grab rod, the inner block is fixedly connected to the push rod, the push rod is vertically arranged, and the bottom end of the push rod is correspondingly sleeved on the surface of the moving rod.
[0012] Furthermore, the distance between the inner end surface of the cross bar and the inner surface of the arc frame is greater than the width of the arc block.
[0013] The present invention also provides an auxiliary use method of a rehabilitation training wheelchair, the method using the above-mentioned rehabilitation training wheelchair, comprising the following steps:
[0014] S1. The patient sits on the ground, and the placement plate on the front side of the wheelchair body corresponds to the patient's buttocks. The patient's two hands grab the surfaces of the two grab bars respectively, and the hands exert force to move the patient up until the patient's buttocks are corresponding to the seat cushion of the wheelchair body. The grab bars are released, the two Velcros are separated, and the hands place the two feet on the top of the first pedal and the second pedal respectively;
[0015] S2, using two Velcro straps to wrap around the legs, at this time, the patient's heel fits with the inner concave surface of the welt, and the two Velcro straps and the welt are used to make the patient's foot limitedly installed on the top surface of the placement board, and the screw sleeve is turned, and the relative distance between the first pedal and the second pedal is adjusted in real time by the spiral cooperation between the screw sleeve and the insertion rod, so that the feet of different patients are placed on the top surface of the placement board accordingly;
[0016] S3, when the patient's legs exert force to make the placement board move up vertically, the placement board that moves up uses the arc frame to drive the arc block to move up, and the arc frame uses the circular ring to drive the cross bar and the push plate to move up vertically. At this time, the arc block that moves up drives the sleeve ring to move up on the surface of the support rod, and the sleeve ring and the ring edge cooperate to squeeze the spring on the surface of the support rod, and the elastic force of the spring enables the patient to exercise his legs;
[0017] S4. When the patient's legs exert force to extend the feet forward, the feet use two Velcros to make the placement plate drive the arc frame to slide on the surface of the arc block, that is, the arc frame rotates under the drive of the feet, and the sliding arc frame uses the circular ring to pull the cross bar downward, and the downward-moving cross bar uses the push plate to make the moving rod move downward inside the push rod, and the circular ring uses the cross bar and the push plate to pull the moving rod forward, and the forward-moving moving rod makes the inner block move inside the inner groove through the push rod, and uses the arc frame to slide on the surface of the arc block, so that the patient can exercise the legs to extend forward.
[0018] Technical effects and advantages of the present invention:
[0019] 1. The present invention uses the auxiliary pushing of the push rod, that is, the push rod uses the push plate at the bottom of the moving rod to make the cross bar drive the arc frame to slide forward and backward, and utilizes the sliding rotation of the arc frame to swing the patient's legs up and down, which is convenient for auxiliary training of the leg muscles and effectively improves the rehabilitation training effect of the legs.
[0020] 2. The present invention provides resistance to the vertical upward movement of the placement board through the elastic force of the spring. When the patient's feet use two Velcro strips to move the placement board up and down multiple times, the elastic force of the spring is used to enable the patient to exercise the thigh muscles.
[0021] 3. The present invention utilizes the spiral cooperation between the screw sleeve and the insertion rod to adjust the relative distance between the first pedal and the second pedal in real time, so that the first pedal and the second pedal can be adapted to the two feet of different patients, so that the patient's feet can be comfortably placed on the top of the placement board. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 is an overall schematic diagram of a rehabilitation training wheelchair according to an embodiment of the present invention;
[0023] Figure 2 is an overall schematic diagram of a training component between two grab bars according to an embodiment of the present invention;
[0024] Figure 3 is a schematic diagram of the corresponding cooperation between the insertion rod and the sleeve according to an embodiment of the present invention;
[0025] Figure 4 Schematic diagram of the ring in the embodiment of the present invention using the arc block and the arc frame;
[0026] Figure 5 The embodiment of the present invention Figure 2 A magnified view of the structure of part A;
[0027] In the figure: 1, wheelchair body; 2, seat cushion; 3, grab bar; 4, support rod; 5, universal wheel; 6, first pedal; 7, second pedal; 8, arc frame; 9, welt; 10, Velcro; 11, sleeve; 12, plug rod; 13, ring piece; 14, screw sleeve; 15, collar; 16, spring; 17, ring edge; 18, arc block; 19, ring; 20, cross bar; 21, push plate; 22, moving rod; 23, inner groove; 24, inner block; 25, push rod. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.
[0029] The present invention provides a rehabilitation training wheelchair, such as Figure 1 and Figure 2 As shown, it includes a wheelchair body 1 and a seat cushion 2 placed on the wheelchair body 1, grab bars 3 are provided on both sides of the front side of the wheelchair body 1, the grab bars 3 are arranged horizontally, and a support rod 4 is vertically fixed to the bottom of the grab bars 3, and the bottom end of the support rod 4 is rotatably connected to a universal wheel 5, and the wheelchair body 1 moves through the wheels and the universal wheel 5, and a placement plate is provided between the bottom ends of the two support bars 4, and the placement plate includes a first pedal 6 and a second pedal 7, and the first pedal 6 and the second pedal 7 are arranged relatively parallel, and arc frames 8 are installed at both ends of the placement plate, and the surface of the support bar 4 cooperates with the arc frame 8 by means of training components, and the patient sits on the seat cushion 2 of the wheelchair body 1, and the patient's two feet are placed on the first pedal 6 and the second pedal 7 respectively, and the legs are exercised by the training components, and the first pedal 6 and the second pedal 7 are both installed with limiting components, and the patient's feet are limitedly connected to the placement plate by the limiting components. The patient sits on the ground, and the placement plate on the front side of the wheelchair body 1 corresponds to the patient's buttocks. The patient's two hands grab the surfaces of the two grab bars 3 respectively, and use their hands to move the patient up until the patient's buttocks sit on the seat cushion 2 of the wheelchair body 1. The grab bars 3 are released, and the hands place the two feet on the top of the first pedal 6 and the second pedal 7 accordingly. The limiting components are used to place the patient's two feet on the top of the placement plate accordingly, and the wheelchair body 1 is pushed. The wheelchair body 1 moves on the ground using the wheels and universal wheels 5. The patient sits on the seat cushion 2 and uses the training components to perform rehabilitation training on the legs, which effectively improves the rehabilitation training effect on the legs.
[0030] exist Figure 1 and Figure 2In the embodiment, the limiting component includes two vertically arranged side rods, the surfaces of the two side rods are sleeved with welts 9, the inner concave surface of welts 9 corresponds to the position of the patient's heels, and both ends of welts 9 are connected with Velcro 10, and the patient's feet are limited on the top of the placement board through the cooperation of the two Velcro 10. After opening the two Velcro 10 and placing the patient's feet on the placement board, the two Velcro 10 are closed until the two Velcro 10 surround the patient's legs, thereby completing the limitation of the patient's feet and preventing the patient's feet from falling off the placement board during the movement of the wheelchair body 1.
[0031] exist Figure 2 and Figure 3 In the embodiment, two sleeves 11 are fixed to the inner side of the first pedal 6, and two plug rods 12 are fixed to the inner side of the second pedal 7. The two plug rods 12 correspond to the two sleeves 11 one by one, and the sleeves 11 are correspondingly sleeved on the surfaces of the plug rods 12. A circular plate is fixed to the inner end of the plug rod 12, and the circular plate at the inner end of the plug rod 12 slides inside the sleeve 11. Two opposite ring pieces 13 are fixed to the inner end of the sleeve 11, and a screw sleeve 14 is rotatably sleeved on the outer sides of the two ring pieces 13, and the screw sleeve 14 is spirally sleeved on the surface of the sleeve 11. After the foot is restricted by the two Velcro strips 10, the screw sleeve 14 is turned. Due to the restriction of the sleeve 11 on the ring piece 13, the screw sleeve 14 rotates outside the two ring pieces 13. The spiral cooperation between the rotating screw sleeve 14 and the insertion rod 12 enables the insertion rod 12 to drive the circular plate to move inside the sleeve 11. The relative distance between the first pedal 6 and the second pedal 7 is adjusted in real time by utilizing the spiral cooperation between the screw sleeve 14 and the insertion rod 12, so that the first pedal 6 and the second pedal 7 can adapt to the two feet of different patients, so that the patient's feet can be comfortably placed on the top of the placement board.
[0032] exist Figure 1 , Figure 2 and Figure 4 In the embodiment, the training component includes a collar 15, which is sleeved on the surface of the support rod 4, and a spring 16 is sleeved on the surface of the collar 15, the bottom end of the spring 16 is connected to the top surface of the collar 15, the top of the support rod 4 is connected to the ring edge 17, the top of the spring 16 is connected to the bottom surface of the ring edge 17, and the outer circumferential side of the collar 15 is fixed with an arc block 18, and the arc block 18 is correspondingly inserted into the inner side of the arc frame 8. When the patient's legs exert force to make the placement board move vertically upward, the upward placement board uses the arc frame 8 to drive the arc block 18 to move upward. At this time, the upward arc block 18 drives the collar 15 to move upward on the surface of the support rod 4, and the collar 15 cooperates with the ring edge 17 to squeeze the spring 16 on the surface of the support rod 4. Through multiple up and down movements of the legs, the elastic force of the spring 16 is used to enable the patient to exercise the thigh muscles.
[0033] exist Figure 2 , Figure 4 and Figure 5In the embodiment, a circular ring 19 is fixed on the top of the arc frame 8, and the bottom of the arc frame 8 is slidably sleeved on the surface of the arc block 18. A cross bar 20 is inserted transversely at the center of the circular ring 19, and a push plate 21 is fixed on the outer end of the cross bar 20. A moving rod 22 is fixed on the top surface of the push plate 21. The moving arc frame 8 drives the cross bar 20 to move by using the circular ring 19. Two arc frames 8 correspond to two grab bars 3 one by one. An inner groove 23 is provided on the circumferential side of the grab bar 3, and an inner block 24 is slidably clamped inside the inner groove 23. A push rod 25 is provided on the outer side of the grab bar 3. The inner block 24 is fixedly connected to the push rod 25. The push rod 25 is vertically arranged, and the bottom end of the push rod 25 is correspondingly sleeved on the surface of the moving rod 22. When the patient's legs exert force to extend the feet forward, the feet use the two Velcro strips 10 to make the placement plate drive the arc frame 8 to slide on the surface of the arc block 18, that is, the arc frame 8 rotates under the drive of the feet, and the sliding arc frame 8 uses the ring 19 to pull the cross bar 20 downward, and the downwardly moving cross bar 20 uses the push plate 21 to make the moving rod 22 move downward inside the push rod 25, and the ring 19 uses the cross bar 20 and the push plate 21 to pull the moving rod 22 forward, and the forward moving rod 22 makes the inner block 24 move inside the inner groove 23 through the push rod 25, and uses the arc frame 8 to slide on the surface of the arc block 18, so that the patient can exercise the leg extension.
[0034] Until the outer side of the circular ring 19 contacts the arc block 18, the foot moves upward, and the upwardly moved foot uses two Velcros 10 to make the placement plate drive the ring 15 to squeeze the spring 16 on the surface of the support rod 4, and the elastic force of the spring 16 is used to provide resistance for the patient's foot to move upward, thereby improving the patient's leg exercise effect.
[0035] exist Figures 2 to 5 In the embodiment, the distance between the inner end surface of the cross bar 20 and the inner surface of the arc frame 8 is greater than the width of the arc block 18. When the relative distance between the first pedal 6 and the second pedal 7 is adjusted in real time by the screw fit of the screw sleeve 14 and the insertion rod 12, the first pedal 6 and the second pedal 7 both drive the arc frame 8 to move laterally, and the arc frame 8 that moves laterally gradually moves away from the collar 15, and the moving arc frame 8 moves on the surface of the cross bar 20 through the ring 19, so that the relative distance between the first pedal 6 and the second pedal 7 can be adapted to the two feet of different patients.
[0036] The patient sits on the cushion 2, and the patient's two hands respectively grasp the top of the two push rods 25, push the push rods 25 to move forward and backward, and the moving push rods 25 drive the inner block 24 to move forward and backward inside the inner groove 23. The forward-moving push rod 25 uses the push plate 21 at the bottom of the moving rod 22 to make the cross bar 20 push the arc frame 8 forward, and the forward-moving arc frame 8 slides on the surface of the arc block 18, and the sliding and rotating arc frame 8 makes the patient's legs extend forward and move upward; the backward-moving push rod 25 uses the push plate 21 at the bottom of the moving rod 22 to make the cross bar 20 push the arc frame 8 backward, and the sliding and rotating arc frame 8 makes the patient's legs pull backward and downward, and the auxiliary pushing of the push rod 25 facilitates the auxiliary exercise of the leg muscles.
[0037] The present invention also provides an auxiliary use method of a rehabilitation training wheelchair, referring to Figures 1 to 5 As shown, the method uses the above-mentioned rehabilitation training wheelchair, comprising the following steps:
[0038] S1. The patient sits on the ground, and the placement plate on the front side of the wheelchair body 1 corresponds to the patient's buttocks. The patient's two hands respectively grasp the surfaces of the two grab bars 3, and the hands exert force to move the patient upward until the patient's buttocks are correspondingly sitting on the seat cushion 2 of the wheelchair body 1. The grab bar 3 is released, the two Velcros 10 are separated, and the hands place the two feet on the top of the first pedal 6 and the second pedal 7 correspondingly;
[0039] S2, use two Velcros 10 to wrap around the legs, at this time the patient's heel fits with the inner concave surface of the welt 9, use the two Velcros 10 and the welt 9 to make the patient's foot limitedly installed on the top surface of the placement board, turn the screw sleeve 14, and use the spiral cooperation between the screw sleeve 14 and the insertion rod 12 to adjust the relative distance between the first pedal 6 and the second pedal 7 in real time, so that the feet of different patients are placed on the top surface of the placement board accordingly;
[0040] S3, when the patient's legs exert force to make the placement board move up vertically, the placement board that moves up uses the arc frame 8 to drive the arc block 18 to move up, and the arc frame 8 uses the ring 19 to drive the cross bar 20 and the push plate 21 to move up vertically. At this time, the arc block 18 that moves up drives the ring 15 to move up on the surface of the support rod 4, and the ring 15 cooperates with the ring edge 17 to squeeze the spring 16 on the surface of the support rod 4, and the elastic force of the spring 16 enables the patient to exercise his legs;
[0041] S4. When the patient's legs exert force to extend the feet forward, the feet use the two Velcro strips 10 to make the placement plate drive the arc frame 8 to slide on the surface of the arc block 18, that is, the arc frame 8 rotates under the drive of the feet, and the sliding arc frame 8 uses the ring 19 to pull the cross bar 20 downward, and the downwardly moving cross bar 20 uses the push plate 21 to make the moving rod 22 move downward inside the push rod 25, and the ring 19 uses the cross bar 20 and the push plate 21 to pull the moving rod 22 forward, and the forward moving rod 22 makes the inner block 24 move inside the inner groove 23 through the push rod 25, and uses the arc frame 8 to slide on the surface of the arc block 18, so that the patient can exercise the legs to extend forward.
[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.
Claims
1. A rehabilitation training wheelchair, comprising a wheelchair body (1), and a seat cushion (2) placed on the wheelchair body (1), characterized in that: The wheelchair body (1) is provided with grab bars (3) on both sides of the front side, the grab bars (3) are arranged horizontally, a support bar (4) is vertically fixed at the bottom of the grab bars (3), the bottom end of the support bar (4) is rotatably connected to a universal wheel (5), the wheelchair body (1) moves via the wheels and the universal wheel (5), a placement board is arranged between the bottom ends of the two support bars (4), the placement board comprises a first pedal (6) and a second pedal (7), the first pedal (6) and the second pedal (7) are arranged relatively parallel, an arc frame (8) is installed at both ends of the placement board, the surface of the support bar (4) cooperates with the arc frame (8) by means of training components, a patient sits on the seat cushion (2) of the wheelchair body (1), the two feet of the patient are placed on the first pedal (6) and the second pedal (7) respectively, the legs are exercised by means of the training components, the first pedal (6) and the second pedal (7) are both installed with limiting components, the limiting components are used to limit the connection between the patient's feet and the placement board.
2. The rehabilitation training wheelchair according to claim 1, characterized in that: The limiting component comprises two vertically arranged side rods, the surfaces of the two side rods are sleeved with welts (9), the inner concave surface of the welts (9) corresponds to the position of the patient's heel, and both ends of the welts (9) are connected with Velcro (10), so that the patient's foot is limited on the top of the placement board through the cooperation of the two Velcros (10).
3. The rehabilitation training wheelchair according to claim 2, characterized in that: Two sleeves (11) are fixed on the inner side of the first pedal (6), and two insertion rods (12) are fixed on the inner side of the second pedal (7). The two insertion rods (12) correspond to the two sleeves (11) one by one, and the sleeves (11) are correspondingly sleeved on the surfaces of the insertion rods (12). A circular plate is fixed on the inner end of the insertion rod (12), and the circular plate on the inner end of the insertion rod (12) slides inside the sleeve (11). Two opposite ring pieces (13) are fixed on the inner end of the sleeve (11), and screw sleeves (14) are rotatably sleeved on the outer sides of the two ring pieces (13), and the screw sleeves (14) are spirally sleeved on the surface of the sleeve (11).
4. The rehabilitation training wheelchair according to claim 3, characterized in that: The training component comprises a collar (15), the collar (15) is sleeved on the surface of the support rod (4), a spring (16) is sleeved on the surface of the collar (15), the bottom end of the spring (16) is connected to the top surface of the collar (15), the top of the support rod (4) is connected to a ring edge (17), the top end of the spring (16) is connected to the bottom surface of the ring edge (17), an arc block (18) is fixed on the outer circumferential surface of the collar (15), and the arc block (18) is correspondingly inserted into the inner side of the arc frame (8).
5. The rehabilitation training wheelchair according to claim 4, characterized in that: A circular ring (19) is fixed on the top of the arc frame (8), and the bottom of the arc frame (8) is slidably sleeved on the surface of the arc block (18). A cross bar (20) is transversely inserted at the center of the circular ring (19), a push plate (21) is fixed on the outer end of the cross bar (20), and a moving rod (22) is fixed on the top surface of the push plate (21). The movable arc frame (8) uses the circular ring (19) to drive the cross bar (20) to move.
6. The rehabilitation training wheelchair according to claim 5, characterized in that: The two arc-shaped frames (8) correspond to the two grab bars (3) one by one. The circumferential side of the grab bar (3) is provided with an inner groove (23). An inner block (24) is slidably engaged inside the inner groove (23). A push rod (25) is provided on the outer side of the grab bar (3). The inner block (24) is fixedly connected to the push rod (25). The push rod (25) is vertically arranged, and the bottom end of the push rod (25) is correspondingly sleeved on the surface of the moving rod (22).
7. The rehabilitation training wheelchair according to claim 5, characterized in that: The distance between the inner end surface of the cross bar (20) and the inner side surface of the arc frame (8) is greater than the width of the arc block (18).
8. A method for assisting use of a rehabilitation training wheelchair, characterized in that: The method uses the rehabilitation training wheelchair according to claim 6, comprising the following steps: S1. The patient sits on the ground, and the placement plate on the front side of the wheelchair body (1) corresponds to the patient's buttocks. The patient's two hands respectively grasp the surfaces of the two gripping rods (3) backwards, and the hands exert force to move the patient upward until the patient's buttocks are correspondingly sitting on the seat cushion (2) of the wheelchair body (1). The gripping rod (3) is released, the two Velcro strips (10) are separated, and the hands place the two feet correspondingly on the top of the first pedal (6) and the second pedal (7); S2, using two Velcro strips (10) to wrap around the legs, at which time the patient's heel fits with the inner concave surface of the welt (9), and using the two Velcro strips (10) and the welt (9) to cooperate so that the patient's foot is limitedly installed on the top surface of the placement board, and the screw sleeve (14) is turned, and the relative distance between the first pedal (6) and the second pedal (7) is adjusted in real time by using the spiral cooperation between the screw sleeve (14) and the insertion rod (12), so that the feet of different patients are placed on the top surface of the placement board accordingly; S3, when the patient's legs exert force to make the placement board move vertically upward, the placement board that moves upward uses the arc frame (8) to drive the arc block (18) to move upward, and the arc frame (8) uses the ring (19) to drive the cross bar (20) and the push plate (21) to move vertically upward. At this time, the arc block (18) that moves upward drives the ring (15) to move upward on the surface of the support rod (4), and the ring (15) and the ring edge (17) cooperate to squeeze the spring (16) on the surface of the support rod (4), and the elastic force of the spring (16) enables the patient to exercise his legs; S4. When the patient's legs exert force to extend the feet forward, the feet use the two Velcro strips (10) to drive the placement plate to drive the arc frame (8) to slide on the surface of the arc block (18), that is, the arc frame (8) rotates under the drive of the feet, and the sliding arc frame (8) uses the ring (19) to pull the cross bar (20) downward, and the downwardly moving cross bar (20) uses the push plate (21) to make the moving rod (22) move downward inside the push rod (25), and the ring (19) uses the cross bar (20) and the push plate (21) to pull the moving rod (22) forward, and the forward moving rod (22) causes the inner block (24) to move inside the inner groove (23) through the push rod (25), and uses the arc frame (8) to slide on the surface of the arc block (18), so that the patient can perform the leg extension exercise.