Rehabilitation device for knee osteoarthritis patient

Abstract

The invention discloses a device for rehabilitation of knee osteoarthritis patients, which comprises a support frame, two rehabilitation rods are suspended on the support frame, and the middle parts of the rehabilitation rods are connected through a damping structure in a swinging manner. When a patient uses the device for exercising, the patient needs to be in a sitting position, then the supporting frame is placed right ahead, the distance between the two rehabilitation rods and the height of the pedal plate are adjusted according to the body type of the patient, then the patient steps on the pedal plate, the patient exerts force, the two shanks repeatedly swing outwards, autonomous abduction exercise is conducted, and the muscle groups on the outer sides of the shanks are exercised; or the two shanks repeatedly swing inwards to do autonomous adduction exercise and exercise the muscle groups on the inner sides of the shanks, and the muscle groups on the inner sides or the outer sides of the shanks can be better exercised due to resistance caused by the arrangement of the damping structures during swinging, so that the gap is prevented from being too narrow.

Description

Technical Field

[0001] The present invention relates to the field of orthopedic medical devices, and in particular to a device for rehabilitation of patients with knee osteoarthritis. Background Art

[0002] Knee osteoarthritis is a common chronic joint disease caused by multiple factors, with degeneration of articular cartilage and secondary bone hyperplasia around the joint as the main pathological characteristics. Specifically, knee osteoarthritis refers to a chronic bone and joint disease caused by degeneration of knee articular cartilage and bone hyperplasia, also known as degenerative arthritis and osteoarthritis.

[0003] Primary knee osteoarthritis usually has no obvious cause and is generally considered to be the result of knee joint structural degeneration. The initial deformity of knee osteoarthritis is medial inversion deformity. With bone destruction and loss of functional mobility, dislocation, valgus and valgus deformity, shortening deformity, etc. may also occur.

[0004] Patients with knee arthritis can undergo rehabilitation training through reasonable exercise. However, there are few rehabilitation training devices available today, which cannot assist patients in exercising the inward and outward swing of the calf. Therefore, the rehabilitation effect of the knee joint is reduced during the training process. Therefore, a rehabilitation training device for patients with knee arthritis is designed to solve the above-mentioned problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a device for rehabilitation of patients with knee osteoarthritis, which can assist patients in exercising the inner and outer swing of their calves.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A device for rehabilitation of patients with knee osteoarthritis, characterized in that it comprises:

[0008] A support frame having a horizontal support beam on top;

[0009] Two rehabilitation rods are arranged symmetrically on the left and right, and the rehabilitation rods include from top to bottom:

[0010] A fixing rod, the upper end of which is slidably connected to the support beam and can slide transversely along the support beam and be locked;

[0011] A swing rod, the length of which is adjustable and lockable, the upper end of which is swingably connected to the lower end of the fixed rod via a damping structure; and

[0012] A pedal is arranged horizontally and is fixed to the lower end of the swing rod;

[0013] Wherein, the damping structure comprises:

[0014] An upper shaft seat, the upper end of which has an upper shaft section connected and fixed to a fixing rod, an inner end surface of the upper shaft seat having a transverse outer shaft sleeve, the outer shaft sleeve transversely passing through the upper shaft seat, an inner end surface of the upper shaft seat having a first recessed groove surrounding the outer shaft sleeve, the first recessed groove having a radial end groove, a side surface of the upper shaft seat having a positioning screw hole, the positioning screw hole being located at the front side of the end groove;

[0015] A lower shaft seat, the upper end of which has a lower shaft section connected and fixed to the swing rod, an inner shaft sleeve rotatably inserted into the outer shaft sleeve is provided on the inner end surface of the lower shaft seat, the inner shaft sleeve laterally penetrates the lower shaft seat, a second recessed groove is provided on the inner end surface of the lower shaft seat around the inner shaft sleeve, a sliding hole is provided at the bottom of the second recessed groove, the sliding hole is an arc-shaped hole with the axis of the inner shaft sleeve as the center, and the two ends and the middle of the outer side surface of the sliding hole have a locking hole groove with a diameter greater than its width;

[0016] The adjusting handle has a transverse insertion rod that can be inserted into the inner sleeve, and the adjusting handle also has a locking column that can be inserted into the locking hole groove. The inner side of the locking column has an insert that can slide in the sliding hole, and the insert is provided with an axial notch. The end surface of the insert is fixed with a sealing head to prevent it from escaping from the sliding hole;

[0017] A torsion spring is sleeved outside the outer sleeve, one end of the torsion spring is located in the end slot, a screw is installed in the positioning screw hole to prevent the torsion spring from falling out of the end slot, and the other end of the torsion spring is inserted into the notch of the insert tube; and

[0018] The retaining ring is fixed to the end of the inner sleeve to prevent it from axially escaping from the outer sleeve.

[0019] A further technical solution is that a limiting groove is provided on the inner end surface of the upper shaft seat, and the limiting groove is an arc-shaped groove with the axis of the outer shaft sleeve as the center of the circle, and a sliding column is provided on the inner end surface of the lower shaft seat to slide with the limiting groove.

[0020] A further technical solution is that the center angle of the limiting sink is 80°, allowing the rehabilitation rod to swing outward or inward to a unilateral extent of 40°.

[0021] A further technical solution is that two radially opposite first insertion holes are provided on the outer wall of the upper shaft section of the upper shaft seat, the lower end of the fixing rod has a lower tube section which is plugged into and cooperates with the upper shaft section, a half-circle rotation hole is provided on the side wall of the lower tube section, and both ends of the rotation hole have downward bayonet holes, and after the first insertion hole is aligned with the rotation hole, a first locking rod is inserted into the first insertion hole, and the first locking rod is stuck in the bayonet to achieve rotational locking between the upper shaft seat and the fixing rod.

[0022] A further technical solution is that the support beam is provided with a transverse slideway, the upper end of the rehabilitation rod can slide through the slideway and be locked with the support beam through an eccentric cam clamping rod.

[0023] A further technical solution is that the rocker arm includes a tube body and a rod body that are plug-in compatible, the rod body has a plurality of first adjustment holes spaced apart vertically, the side wall of the tube body has a second socket that can be aligned with any first adjustment hole, and after the second socket is aligned with a first adjustment hole, a second locking rod is inserted to achieve axial locking of the tube body and the rod body.

[0024] A further technical solution is that the height of the support frame is adjustable.

[0025] A further technical solution is that a strap for restraining the patient's calf is fixed on the swing rod, and the strap and the pedal are located on the same side of the swing rod.

[0026] A further technical solution is that the support frame further comprises:

[0027] Two bottom beams are placed on the ground in a longitudinal direction, and the two bottom beams are placed at two ends of the support beam in a transverse direction, and the bottom beam has a first end and a second end in a longitudinal direction; and

[0028] Two main beams are arranged vertically to fix the first end of a bottom beam to the end of the corresponding support beam respectively;

[0029] The bottom of the main beam has an n-shaped slot for horizontally inserting the bottom beam, the opening of the slot faces downward, the first end of the bottom beam is inserted into the slot and fixed to the slot through a transverse rotating shaft, and a pin is also connected between the first end of the bottom beam and the slot.

[0030] A further technical solution is that a brake caster is provided at the bottom of the bottom beam, and an adjustable foot cup is fixed at the bottom of the second end of the bottom beam.

[0031] The beneficial effects of adopting the above technical solution are:

[0032] When the patient uses the device for rehabilitation exercises, the patient needs to be in a sitting position, and then place the support frame in front of the patient, adjust the distance between the two rehabilitation rods and the height of the foot pedal according to the patient's body shape, and then put the foot on the foot pedal. The patient exerts force and repeatedly swings the two calves outward to perform autonomous abduction exercises to exercise the lateral calf muscles, or repeatedly swings the two calves inward to perform autonomous adduction exercises to exercise the medial calf muscles. The damping structure is used to resist during swinging, which can better exercise the medial or lateral calf muscles and prevent the gap from being too narrow.

[0033] In the device, the resistance of the damping structure can be adjusted. When adjusting, the adjustment handle is pulled out partially to separate the lock column from the lock hole slot. At this time, the adjustment handle can be freely rotated to the left or right. Then, the adjustment handle is pressed again to engage and fix the lock column with the lock hole slot of other gears, thereby realizing the adjustment of the torsion force of the torsion spring to meet the needs of different exercise intensities. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] Figure 1 It is a schematic diagram of the structure of the present invention;

[0036] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0037] Figure 3 It is a side structural schematic diagram of the present invention;

[0038] Figure 4 It is a structural schematic diagram of the rehabilitation rod part of the present invention;

[0039] Figure 5 It is a structural schematic diagram of the damping structure in the present invention;

[0040] Figure 6 It is a schematic diagram of the inner structure of the upper shaft seat in the present invention;

[0041] Figure 7 It is a schematic diagram of the inner structure of the lower shaft seat in the present invention;

[0042] Figure 8 It is a schematic diagram of the outer structure of the lower shaft seat in the present invention;

[0043] Fig. 9 This is a schematic diagram of the explosion of the damping structure in the present invention. Figure 1 ;

[0044] Fig.10 This is a schematic diagram of the explosion of the damping structure in the present invention. Figure 2 ;

[0045] Fig.11 This is the usage status of the present invention Figure 1 ;

[0046] Fig.12 This is the usage status of the present invention Figure 2 . DETAILED DESCRIPTION

[0047] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0048] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0049] like Figures 1 to 12 As shown, a device for rehabilitation of patients with knee osteoarthritis can be used. Patients can perform rehabilitation training at home and sit in front of the device when using it.

[0050] The device includes a support frame, which provides stable support for the device so that it can be placed on the ground. The specific form of the support frame is not limited, but the support frame has a horizontal support beam 110 on the top, and two rehabilitation rods 200 are suspended on the support beam 110. The two rehabilitation rods 200 are arranged symmetrically on the left and right, can slide horizontally on the support beam 110 to adjust the distance between the two rehabilitation rods 200, and can be locked with the support beam 110.

[0051] The rehabilitation rod 200 includes a fixed rod 210, a swing rod 220 and a pedal 240 from top to bottom. The upper end of the fixed rod 210 is slidably connected to the support beam 110, and can slide and lock along the support beam 110, so that the distance between the two rehabilitation rods 200 can be adjusted to accommodate patients of different body shapes.

[0052] Specifically, a transverse slide 111 is provided on the support beam 110, and the fixed rod 210 at the upper end of the rehabilitation rod 200 can slide through the slide 111, and a slide plate is fixed to the upper part of the fixed rod 210 located on the slide 111, and an eccentric cam clamping rod 112 is fixed on the slide plate. The eccentric cam clamping rod 112 belongs to the prior art and has a floating friction plate located below the support beam 110. The eccentric handle of the eccentric cam clamping rod 112 is rotated to move the floating friction plate upward and press against the support beam 110, so that the rehabilitation rod 200 and the support beam 110 are locked by the eccentric cam clamping rod 112. The eccentric handle of the eccentric cam clamping rod 112 is rotated in the opposite direction to move the floating friction plate downward and separate from the support beam 110, so that the rehabilitation rod 200 can slide freely to a suitable position.

[0053] The length of the swing rod 220 is adjustable and can be locked. The swing rod 220 includes a plug-in tube body 221 and a rod body 222. The rod body 222 has a plurality of first adjustment holes arranged at intervals from top to bottom. The side wall of the tube body 221 has a second plug hole that can be aligned with any first adjustment hole. After the second plug hole is aligned with a first adjustment hole, the second locking rod 223 is inserted to achieve axial locking of the tube body 221 and the rod body 222. When the length of the swing rod 220 needs to be adjusted, the second locking rod 223 is taken out, the height of the rod body 222 is adjusted, and the second locking rod 223 is inserted and locked after the adjustment hole is aligned with the second plug hole, so that it can adapt to patients of different heights. The upper end of the swing rod 220 is swingably connected to the lower end of the fixed rod 210 through the damping structure 230. The swing rod 220 is in a naturally drooping state when not in use. It can swing inward or outward during rehabilitation and has a certain resistance when swinging.

[0054] The pedal 240 is horizontally arranged and fixed to the lower end of the swing rod 220 .

[0055] When the patient uses the device for rehabilitation exercises, the patient needs to be in a sitting position, and then place the support frame in front of the patient, adjust the distance between the two rehabilitation rods 200 and the height of the foot pedal 240 according to the patient's body shape, and then step on the foot pedal 240. The patient exerts force to repeatedly swing the two calves outward to perform autonomous abduction exercises to exercise the lateral calf muscles, or repeatedly swing the two calves inward to perform autonomous adduction exercises to exercise the medial calf muscles. The damping structure 230 is set to resist during swinging, which can better exercise the medial or lateral calf muscles and prevent the gap from being too narrow.

[0056] The damping structure 230 can adjust the resistance during exercise, and includes an upper shaft seat 231, a lower shaft seat 232, an adjustment handle 233, a torsion spring 234, and a retaining ring 2354. The upper end of the upper shaft seat 231 has an upper shaft section 2311 connected and fixed to the fixing rod 210, and the inner end surface of the upper shaft seat 231 has a transverse outer shaft sleeve 2312, and the outer shaft sleeve 2312 transversely penetrates the upper shaft seat 231, and the inner end surface of the upper shaft seat 231 has a first sink groove around the outer shaft sleeve 2312, and the first sink groove has a radial end groove 2313, and the side of the upper shaft seat 231 has a positioning screw hole 2314, and the positioning screw hole 2314 is located at the front side of the end groove 2313. The upper end of the lower shaft seat 232 has a lower shaft section 2321 connected and fixed to the rocker arm 220, and the inner end surface of the lower shaft seat 232 has an inner shaft sleeve 2322 that can be rotatably inserted into the outer shaft sleeve 2312, and the inner shaft sleeve 2322 transversely penetrates the lower shaft seat 232, and the inner end surface of the lower shaft seat 232 has a second recessed groove surrounding the inner shaft sleeve 2322, and the bottom of the second recessed groove has a sliding hole 2323, and the sliding hole 2323 is an arc-shaped hole with the axis of the inner shaft sleeve 2322 as the center of the circle, and the two ends and the middle of the outer side surface of the sliding hole 2323 have locking hole grooves 2324 with a diameter greater than its width. The adjustment handle 233 has a transverse insertion rod 2331 that can be inserted into the inner sleeve 2322, and the adjustment handle 233 also has a locking column 2332 that can be inserted into the locking hole slot 2324. The inner side of the locking column 2332 has a plug 2333 that can slide in the sliding hole 2323. The plug 2333 has an axial notch, and the end face of the plug 2333 is fixed with a head 2334 to prevent it from coming out of the sliding hole 2323. The torsion spring 234 is sleeved on the outer sleeve 2312, and its two ends are located in the first sink groove and the second sink groove. One end of the torsion spring 234 is located in the end groove 2313, and a screw is installed in the positioning screw hole 2314 to prevent the torsion spring 234 from coming out of the end groove 2313. The other end of the torsion spring 234 is inserted into the notch of the plug 2333. The retaining ring 2354 is fixed to the end of the inner sleeve 2322 to prevent it from axially escaping from the outer sleeve 2312.

[0057] When the damping structure 230 is transferred:

[0058] The first step is to place one end of the torsion spring 234 into the second sink groove;

[0059] The second step is to assemble the adjustment handle 233 with the lower shaft seat 232, so that the insertion rod 2331 of the adjustment handle 233 is inserted from the outside of the lower shaft seat 232 into the inner shaft sleeve 2322, the insertion tube 2333 is inserted into the sliding hole 2323, and one end of the torsion spring 234 is inserted into the notch of the insertion tube 2333, and then the head 2334 is installed at the end of the insertion tube 2333 to prevent it from being withdrawn from the sliding hole 2323;

[0060] The third step is to align the inner end surface of the upper shaft seat 231 with the inner end surface of the lower shaft seat 232, so that the outer shaft sleeve 2312 is sleeved outside the inner shaft sleeve 2322, and the torsion spring 234 is sleeved outside the outer shaft sleeve 2312, and the position of the torsion spring 234 is adjusted so that the end of the torsion spring 234 is inserted into the end groove 2313, and a screw is installed in the positioning screw hole 2314 to prevent the torsion spring 234 from falling out of the end groove 2313;

[0061] In the fourth step, after the inner sleeve 2322 passes through the outer sleeve 2312, a retaining ring 2354 is fixed on the outer end of the inner sleeve 2322 to prevent the inner sleeve 2322 from axially escaping from the outer sleeve 2312, so that the upper shaft seat 231 and the lower shaft seat 232 are not separated.

[0062] The fifth step is to adjust the torque, pull the lock column 2332 of the adjusting handle 233 outward to disengage from the lock hole slot 2324, rotate the adjusting handle 233, the three lock hole slots 2324 represent three gears, and after the lock column 2332 is inserted into a lock hole slot 2324, the adjusting handle 233 and the lower shaft seat 232 are locked and there is no relative rotation.

[0063] In the device, the resistance of the damping structure 230 can be adjusted. When adjusting, the adjustment handle 233 is pulled out partially to separate the locking column 2332 from the locking hole slot 2324. At this time, the adjustment handle 233 can be freely rotated to the left or right, and then the adjustment handle 233 is pressed again to engage and fix the locking column 2332 with the locking hole slot 2324 of other gears, thereby adjusting the torque of the torsion spring 234 to meet the needs of different exercise intensities.

[0064] In order to limit the swing angle of the swing rod 220 and avoid damage caused by excessive amplitude, a limit groove 2315 is provided on the inner end surface of the upper shaft seat 231. The limit groove 2315 is an arc groove with the axis of the outer shaft sleeve 2312 as the center of the circle. The inner end surface of the lower shaft seat 232 is provided with a sliding column 2325 that is slidably engaged with the limit groove 2315. The center angle of the limit groove 2315 is 80°, allowing the rehabilitation rod 200 to swing outward or inward unilaterally by 40°.

[0065] In order to improve the safety of the patient during exercise, a strap 250 for restraining the patient's calf is fixed to the swing bar 220 , and the strap 250 and the pedal 240 are located on the same side of the swing bar 220 .

[0066] The outer wall of the upper shaft section 2311 of the upper shaft seat 231 is provided with two first diametrically opposite first plug holes. The lower end of the fixed rod 210 has a lower tube section plugged with the upper shaft section 2311. The side wall of the lower tube section is provided with a half-circle rotation hole 211. Both ends of the rotation hole 211 have downward bayonet holes. After the first plug hole is aligned with the rotation hole 211, the first locking rod is inserted into the first plug hole. The first locking rod is stuck in the bayonet hole to achieve rotation locking between the upper shaft seat 231 and the fixed rod 210. The position of the pedal 240 is adjustable and can be located on the inside and outside of the swing rod 220. In different exercise modes, the swing rod 220 is always used to limit the calf to prevent the patient's foot from slipping off the pedal 240. When in automatic abduction exercise, the pedal 240 is located on the inside of the swing rod 220; when in the automatic adduction state, the pedal 240 is located on the outside of the rehabilitation rod.

[0067] The height of the support frame is adjustable. The support frame also includes two bottom beams 120 and two main beams 130. The two bottom beams 120 are placed on the ground longitudinally and are placed at the two ends of the support beam 110 transversely. The bottom beam 120 has a first end and a second end in the longitudinal direction. The two main beams 130 are arranged vertically, and the first end of a bottom beam 120 is fixed to the end of the corresponding support beam 110. The bottom of the main beam 130 has an n-shaped slot for horizontal insertion of the bottom beam 120, and the opening of the slot faces downward. The first end of the bottom beam 120 is inserted into the slot and fixed to the slot through a transverse rotating shaft. A latch is also connected between the first end of the bottom beam 120 and the slot. After the latch is taken out, the bottom beam 120 can be flipped and folded upwards so that the bottom beam 120 is in a vertical state and can be fixed to the corresponding main beam 130. Specifically, a hook is provided on the main beam 130, which is hooked and fixed to the hook on the bottom beam 120, so that the entire device can be folded and stored, thereby reducing the space occupied during storage.

[0068] In addition, a brake caster 140 is provided at the bottom of the bottom beam 120, and an adjustment foot cup 150 is fixed at the bottom of the second end of the bottom beam 120. The adjustment foot cup 150 is provided to maintain the stability of the device. The brake caster 140 is provided so that after the device is folded, it can be tilted forward and moved on the ground with the brake caster 140. The brake caster 140 is locked when the device is in use.

[0069] The above are only preferred embodiments of the present invention. Any simple modification, deformation and equivalent substitution made by anyone to the present invention based on the contents of the present invention shall fall within the protection scope of the present invention.

Claims

1. A device for rehabilitation of patients with knee osteoarthritis, characterized in that: include: A support frame having a horizontal support beam (110) on the upper side; Two rehabilitation rods (200) are arranged symmetrically on both sides. The rehabilitation rods (200) include, from top to bottom: A fixing rod (210), the upper end of which is slidably connected to the support beam (110) and can slide transversely along the support beam (110) and be locked; A swing rod (220) having an adjustable length and capable of being locked, wherein the upper end of the swing rod (220) is swingably connected to the lower end of the fixed rod (210) via a damping structure (230); and A pedal (240) is arranged horizontally, and the pedal (240) is fixed to the lower end of the swing rod (220); Wherein, the damping structure (230) comprises: An upper shaft seat (231), the upper end of which has an upper shaft section (2311) connected and fixed to a fixing rod (210); an inner end surface of the upper shaft seat (231) has a transverse outer shaft sleeve (2312); the outer shaft sleeve (2312) transversely penetrates the upper shaft seat (231); an inner end surface of the upper shaft seat (231) has a first recessed groove surrounding the outer shaft sleeve (2312); the first recessed groove has a radial end groove (2313); a side surface of the upper shaft seat (231) has a positioning screw hole (2314); the positioning screw hole (2314) is located at the front side of the end groove (2313); A lower shaft seat (232), the upper end of which has a lower shaft section (2321) connected and fixed to the swing rod (220); an inner shaft sleeve (2322) capable of being rotatably inserted into an outer shaft sleeve (2312) is provided on the inner end surface of the lower shaft seat (232); the inner shaft sleeve (2322) passes through the lower shaft seat (232) transversely; a second recessed groove is provided on the inner end surface of the lower shaft seat (232) surrounding the inner shaft sleeve (2322; a sliding hole (2323) is provided at the bottom of the second recessed groove; the sliding hole (2323) is an arc-shaped hole with the axis of the inner shaft sleeve (2322) as the center of the circle; and locking grooves (2324) with a diameter greater than the width are provided at both ends and the middle of the outer side surface of the sliding hole (2323); The adjusting handle (233) has a transverse insert rod (2331) that can be inserted into the inner sleeve (2322), and the adjusting handle (233) also has a locking column (2332) that can be inserted into the locking hole groove (2324). The inner side of the locking column (2332) has a plug (2333) that can slide in the sliding hole (2323), and the plug (2333) is provided with an axial notch. The end surface of the plug (2333) is fixed with a sealing head (2334) that prevents the plug (2333) from falling out of the sliding hole (2323); A torsion spring (234) is sleeved outside the outer shaft sleeve (2312), one end of the torsion spring (234) is located in the end groove (2313), a screw is installed in the positioning screw hole (2314) to prevent the torsion spring (234) from falling out of the end groove (2313), and the other end of the torsion spring (234) is inserted into the notch of the insertion tube (2333); and The retaining ring (2354) is fixed to the end of the inner sleeve (2322) to prevent it from axially escaping from the outer sleeve (2312).

2. The device according to claim 1, characterized in that The inner end surface of the upper shaft seat (231) is provided with a limiting groove (2315), and the limiting groove (2315) is an arc-shaped groove with the axis of the outer shaft sleeve (2312) as the center of the circle. The inner end surface of the lower shaft seat (232) is provided with a sliding column (2325) that is slidably engaged with the limiting groove (2315).

3. The device according to claim 2, characterized in that The center angle of the limiting sink groove (2315) is 80°, allowing the rehabilitation rod (200) to swing outward or inward unilaterally within an amplitude of 40°.

4. The device according to claim 1, characterized in that The outer wall of the upper shaft section (2311) of the upper shaft seat (231) is provided with two first diametrically opposed holes, the lower end of the fixing rod (210) is provided with a lower tube section plugged into and matched with the upper shaft section (2311), the side wall of the lower tube section is provided with a half-circle rotation hole (211), and both ends of the rotation hole (211) are provided with downward snap-fits, and after the first jack is aligned with the rotation hole (211), a first locking rod is inserted into the first jack, and the first locking rod is snapped in the snap-fit, thereby realizing rotation locking between the upper shaft seat (231) and the fixing rod (210).

5. The device according to claim 1, characterized in that The support beam (110) is provided with a transverse slideway (111), and the upper end of the rehabilitation rod (200) can slide through the slideway (111) and be locked with the support beam (110) through an eccentric cam clamping rod (112).

6. The device according to claim 1, characterized in that The swing rod (220) comprises a tube body (221) and a rod body (222) that are plugged together. The rod body (222) has a plurality of first adjustment holes that are spaced apart from each other. The side wall of the tube body (221) has a second insertion hole that can be aligned with any of the first adjustment holes. After the second insertion hole is aligned with a first adjustment hole, a second locking rod (223) is inserted into the second insertion hole to achieve axial locking of the tube body (221) and the rod body (222).

7. The device according to claim 1, characterized in that The support frame is height adjustable.

8. The device according to claim 1, characterized in that A strap (250) for restraining the patient's calf is fixed on the swing rod (220), and the strap (250) and the pedal (240) are located on the same side of the swing rod (220).

9. The device according to claim 1, characterized in that The support frame also includes: Two bottom beams (120) are placed on the ground in a longitudinal direction, and the two bottom beams (120) are respectively placed at two ends of the support beam (110) in a transverse direction, and the bottom beam (120) has a first end and a second end in a longitudinal direction; and Two main beams (130) are vertically arranged to respectively fix the first end of a bottom beam (120) to the end of the corresponding support beam (110); The bottom of the main beam (130) has an n-shaped slot for the bottom beam (120) to be horizontally inserted, the opening of the slot faces downward, the first end of the bottom beam (120) is inserted into the slot and fixed to the slot via a transverse rotating shaft, and a latch is connected between the first end of the bottom beam (120) and the slot.

10. The device according to claim 9, characterized in that A brake caster (140) is provided at the bottom of the bottom beam (120), and an adjustable foot cup (150) is fixed at the bottom of the second end of the bottom beam (120).

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