Knee joint painful lesion rehabilitation device for orthopedics department

Abstract

The invention relates to the technical field of medical instruments, and discloses an orthopedic knee joint painful lesion rehabilitation device which comprises an adjusting bottom plate, an anti-skid foot pad is fixedly mounted at the bottom of the adjusting bottom plate, a backup plate is integrally arranged on one side of the adjusting bottom plate, and a backrest assembly is arranged on the side, facing the adjusting bottom plate, of the backup plate. And a fixing assembly is arranged above the adjusting bottom plate. According to the knee joint painful lesion rehabilitation device for the orthopedics department, by arranging a backup plate, the supporting effect on the back is achieved during wall-leaning squatting, meanwhile, clothes are prevented from getting dirty, a sitting plate in a backrest assembly is pressed downwards by the hip during wall-leaning squatting, so that a jacking spring generates jacking reasoning on a connecting block, and then it is ensured that when the leg strength of a patient is insufficient, the patient can be prevented from getting dirty. Effective support can be provided for a patient, and meanwhile the distance between the two feet and the distance between the two foot backup plates are adjusted by adjusting the bottom plate and the fixing assembly.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a rehabilitation device for painful lesions of orthopedic knee joints. Background Art

[0002] Knee pain is a very common problem, especially due to excessive exercise, cartilage wear or osteoarthritis. Treating knee pain is inseparable from strengthening the hip and leg muscles. Patellar softening, patellofemoral joint cartilage damage, painful lesions at the upper and lower poles of the patella, etc. can all be improved by strengthening the hip and leg muscles. Among the common intensive rehabilitation training, wall squats are a simple and easy training method that does not require assistance from others and is less dependent on the environment. As long as the posture is correct and the training is appropriate, the leg muscles can be exercised conveniently and effectively.

[0003] During training, the patient's back is against the wall, the feet are separated, shoulder-width apart, and the calves are gradually extended forward to form a certain distance between the body's center of gravity, about 40-50 cm. At this time, the body has already shown a squatting posture, so that the calves are perpendicular to the ground, and the thighs and calves form a 90° angle. The angle cannot be too small. If it is too small, the squat is too deep, which will significantly increase the pressure on the patellofemoral joint and fail to produce a training effect on the thigh muscle strength. The calves must remain perpendicular to the ground to prevent the knees from buckling inwards. Buckling the knees inwards will lead to incorrect alignment of the lower limb force lines and increase knee pressure. Not only will it fail to achieve effective training results, but it will also aggravate the condition. It is very inconvenient to adjust the posture during wall training.

[0004] To this end, we propose a rehabilitation device for painful lesions of the orthopedic knee joint. Summary of the invention

[0005] In order to make up for the shortcomings of the prior art, the present invention provides the following technical solutions: a rehabilitation device for painful orthopedic knee joint lesions, comprising an adjustable base plate, a non-slip foot pad is fixedly installed on the bottom of the adjustable base plate, a backrest plate is integrally provided on one side of the adjustable base plate, a backrest assembly is provided on the side of the backrest plate facing the adjustable base plate, and a fixing assembly is provided above the adjustable base plate.

[0006] Preferably, the adjustable base plate includes a bottom box and a rotating shaft rotatably connected to the vertical plate, the bottom of the bottom box is fixedly installed with the anti-slip foot pad, the middle part of the bottom box is rotatably connected with a threaded rod, one end of the threaded rod penetrates into the interior of the back plate, and guide rods located on both sides of the threaded rod are fixedly installed inside the bottom box, the threaded rod is threadedly connected with a moving block, the top of the moving block is slidably connected with the top of the bottom box, the top of the moving block is integrally connected with a movable plate, the bottom of the movable plate is integrally connected with guide blocks located on both sides of the moving block, the guide blocks are slidably connected to the guide rods, and the fixed component is arranged on the top of the movable plate.

[0007] Preferably, a third synchronous wheel located inside the backrest is fixedly mounted on one end of the threaded rod, the rotating shaft is located on one side of the backrest assembly, a handwheel located outside the backrest is fixedly mounted on one end of the rotating shaft, and a first synchronous wheel located inside the backrest is fixedly mounted on the other end of the rotating shaft, the backrest is internally rotatably connected to a second synchronous wheel located directly below the first synchronous wheel, the second synchronous wheel and the third synchronous wheel are located at the same height, the second synchronous wheel is transmission connected to the first synchronous wheel via a first synchronous belt, and the third synchronous wheel is transmission connected to the second synchronous wheel via a second synchronous belt.

[0008] Preferably, a through groove slidably connected to the moving block and the guide block is provided on the top of the bottom box, and the bottom of the movable plate is in sliding contact with the top of the bottom box.

[0009] Preferably, the backrest assembly includes a sliding groove, a sliding round rod, a connecting block, a seat plate, and a lifting spring. The sliding groove is opened on the side of the back plate facing the adjustment base plate. The upper and lower ends of the sliding round rod are respectively fixedly installed with the upper and lower ends inside the sliding groove. The connecting block is slidably connected with the sliding round rod. The seat plate is integrally connected with one side of the connecting block. The seat plate is located outside the back plate. The lifting spring is sleeved on the outer circumferential surface of the sliding round rod.

[0010] Preferably, there are four connecting blocks in total, and the four connecting blocks are respectively slidably connected to two sliding round rods, the top of the lifting spring is in tight contact with the bottom of the connecting block located below, and the bottom of the lifting spring is in tight contact with the bottom of the sliding groove.

[0011] Preferably, the fixing component includes a protective shell fixedly mounted on the top of the movable plate, and a foot pedal located on the top of the protective shell, an adjustment slot is opened on the top of the protective shell, a two-way lead screw is rotatably connected inside the protective shell, one end of the two-way lead screw passes through the protective shell, and a roller located outside the protective shell is fixedly mounted on one end of the two-way lead screw, a limiting component is provided on the other end of the two-way lead screw, an adjustment block is threadedly connected to the two-way lead screw, the tops of the two adjustment blocks are slidably connected to the adjustment slot, the bottom of the foot pedal is integrally arranged with the top of the adjustment block, and the bottom of the foot pedal is in sliding contact with the top of the protective shell.

[0012] Preferably, the limiting assembly includes a limiting groove located inside the protective shell, and a ratchet fixedly mounted on the bidirectional lead screw, the top of the limiting groove is fixedly mounted on the top inside the protective shell, the bottom of the limiting groove is fixedly mounted on the top of the movable plate, a rack is slidably connected inside the limiting groove, the rack is slidably connected to the top of the protective shell, the tops of the two racks are integrally connected with a pressure plate, a clamping spring is provided at the bottom of the rack, the top of the clamping spring is fixedly mounted on the bottom of the rack, the bottom of the clamping spring is fixedly mounted on the top of the movable plate, and the clamping spring is located inside the limiting groove.

[0013] Preferably, a connecting shaft is rotatably connected to one side of the protective shell, a pawl is fixedly installed on the other end of the connecting shaft, a gear located on one side of the pawl is fixedly installed on the other end of the connecting shaft, the gear is meshed with the rack, and the other end of the pawl is in tight contact with the ratchet.

[0014] Preferably, two of the ratchets, pawls and gears are provided, the two ratchets rotate in opposite directions, the two pawls face opposite directions, the two gears are respectively meshed with two racks, the two gears are located in the same plane, and the two gears are located between the two pawls. Beneficial Effects

[0015] Compared with the prior art, the present invention provides a rehabilitation device for orthopedic knee joint pain lesions, which has the following beneficial effects: 1. This orthopedic knee joint pain rehabilitation device, by providing a backrest, can support the back when squatting against the wall, and prevent clothes from getting dirty. The seat plate in the backrest assembly is pressed down by the buttocks when squatting against the wall, so that the lifting spring can lift the connection block, thereby ensuring that when the patient's leg strength is insufficient, it can provide effective support for the patient. At the same time, the distance between the two feet and the backrest of the two feet can be adjusted by adjusting the bottom plate and the fixing assembly; 2. The orthopedic knee joint pain rehabilitation device, by rotating the hand wheel, then driving the first synchronous wheel to rotate through the rotating shaft, and then driving the threaded rod to rotate through the first synchronous belt, the second synchronous wheel, the second synchronous belt and the third synchronous wheel, so that the moving block moves, and at the same time, the movable plate and the guide block simultaneously drive the foot pedal in the fixed component to move, thereby adjusting the distance between the feet and the backboard, so that the angle between the calf and the thigh is ninety degrees; 3. This orthopedic knee joint painful lesion rehabilitation device, by pressing down the pressure plate, the rack drives the gear to rotate, thereby causing the pawl to deflect and loosen from the ratchet, and then rotating the roller to drive the two-way screw to rotate, so that the adjustment block drives the pedal to slide along the adjustment groove to adjust the distance between the two pedals to a suitable position, and then releasing the pressure plate, the rack rises under the action of the clamping spring and drives the gear to reverse, so that the pawl and the ratchet are pressed against each other to prevent the two-way screw from rotating, so as to fix the distance between the two pedals. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the adjustment base plate of the present invention; Figure 3 It is a structural schematic diagram of the backing plate of the present invention; Figure 4 It is a partial structural schematic diagram of the backrest assembly of the present invention; Figure 5 It is a schematic diagram of the structure of the fixing assembly of the present invention; Figure 6 It is a schematic diagram of the internal structure of the protective shell of the present invention; Figure 7 It is a cross-sectional view of the protective shell and the movable plate of the present invention; Figure 8 It is a schematic structural diagram of the limiting component of the present invention.

[0017] In the figure: 1, adjusting bottom plate; 11, bottom box; 12, threaded rod; 13, moving block; 14, movable plate; 15, guide rod; 16, guide block; 17, third synchronous wheel; 18, rotating shaft; 19, hand wheel; 110, first synchronous wheel; 111, first synchronous belt; 112, second synchronous wheel; 113, second synchronous belt; 2, back plate; 3, backrest assembly; 31, sliding groove; 32, sliding round rod; 33 , connecting block; 34, seat plate; 35, lifting spring; 4, fixing assembly; 41, protective shell; 42, adjusting slot; 43, two-way screw; 44, adjusting block; 45, pedal; 46, roller; 47, limiting assembly; 471, limiting slot; 472, rack; 473, pressure plate; 474, clamping spring; 475, ratchet; 476, connecting shaft; 477, gear; 478, pawl; 5, anti-slip foot pad. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figures 1 to 8 A rehabilitation device for painful knee joint lesions in orthopedics includes an adjustable base plate 1, a non-slip foot pad 5 is fixedly installed at the bottom of the adjustable base plate 1, a backrest plate 2 is integrally arranged on one side of the adjustable base plate 1, a backrest assembly 3 is arranged on the side of the backrest plate 2 facing the adjustable base plate 1, and a fixing assembly 4 is arranged above the adjustable base plate 1.

[0020] As an embodiment of the present invention, the adjustable base plate 1 includes a bottom box 11 and a rotating shaft 18 rotatably connected to the vertical plate, the bottom of the bottom box 11 is fixedly installed with the anti-slip foot pad 5, the middle part of the bottom box 11 is rotatably connected with a threaded rod 12, one end of the threaded rod 12 passes through the inside of the back plate 2, and the inside of the bottom box 11 is fixedly installed with guide rods 15 located on both sides of the threaded rod 12, the threaded rod 12 is threadedly connected with a moving block 13, the top of the moving block 13 is slidably connected with the top of the bottom box 11, the top of the moving block 13 is integrally connected with a movable plate 14, the bottom of the movable plate 14 is integrally connected with guide blocks 16 located on both sides of the moving block 13, the guide blocks 16 are slidably connected with the guide rods 15, and the fixed component 4 is arranged on the top of the movable plate 14.

[0021] As an embodiment of the present invention, a third synchronous wheel 17 located inside the backrest 2 is fixedly installed at one end of the threaded rod 12, a rotating shaft 18 is located on one side of the backrest assembly 3, a hand wheel 19 located outside the backrest 2 is fixedly installed at one end of the rotating shaft 18, and a first synchronous wheel 110 located inside the backrest 2 is fixedly installed at the other end of the rotating shaft 18. The backrest 2 is internally rotatably connected to a second synchronous wheel 112 located directly below the first synchronous wheel 110. The second synchronous wheel 112 is located at the same height as the third synchronous wheel 17, and the second synchronous wheel 112 is connected to the first synchronous wheel 110 through a first synchronous belt 111. 0 transmission connection, the third synchronous wheel 17 is transmission connected with the second synchronous wheel 112 through the second synchronous belt 113, and the first synchronous wheel 110 is driven to rotate through the rotating shaft 18 by rotating the hand wheel 19, and then the threaded rod 12 is driven to rotate through the first synchronous belt 111, the second synchronous wheel 112, the second synchronous belt 113 and the third synchronous wheel 17, so that the moving block 13 moves, and at the same time, the movable plate 14 and the guide block 16 simultaneously drive the foot pedal 45 in the fixed component 4 to move, so as to adjust the distance between the two feet and the back plate 2, so that the angle between the calf and the thigh is ninety degrees.

[0022] As an embodiment of the present invention, a through groove slidably connected to the moving block 13 and the guide block 16 is opened on the top of the bottom box 11 , and the bottom of the movable plate 14 is in sliding contact with the top of the bottom box 11 .

[0023] The support frame 31 is provided with a plurality of support members 32, 33 and 35, and the support members 32 are provided with a plurality of support members 32, 33 and 35, and the plurality of support members 32 are provided with a plurality of support members 32, 33 and 35, and the plurality of support members 32 are provided with a plurality of support members 32, 33 and 35, and the plurality of support members 32 are provided with a plurality of support members 32, 33 and 35, and the plurality of support members 32 are provided with a plurality of support members 32, and the plurality of support members 32 are provided with a plurality of support members 32, and the plurality of support members 32 are provided with a plurality of support members 32, and the plurality of support members 32 are provided with a plurality of support members 32, and the plurality of support members 32 are provided with a plurality of support members 32, and the plurality of support members 32 are provided with a plurality of support members 32, and the plurality of support members 32 are provided with a plurality of support members 32, and the plurality of support members 32 are provided with a plurality of support members 32, and the plurality of support members 32 are provided with a plurality of support members 32, and the plurality of support members 32 are provided with a plurality of support members 32, and the plurality of support members 32 are provided with a plurality of support members 32, and the plurality of support members 32 are provided with a plurality of support members 32,

[0024] As an embodiment of the present invention, there are four connecting blocks 33, which are respectively slidably connected to two sliding round rods 32, and the top of the lifting spring 35 is in tight contact with the bottom of the connecting block 33 located below, and the bottom of the lifting spring 35 is in tight contact with the bottom of the sliding groove 31.

[0025] As an embodiment of the present invention, the fixing component 4 includes a protective shell 41 fixedly mounted on the top of the movable plate 14, and a foot pedal 45 located on the top of the protective shell 41. An adjustment slot 42 is provided on the top of the protective shell 41. A bidirectional lead screw 43 is rotatably connected inside the protective shell 41. One end of the bidirectional lead screw 43 passes through the protective shell 41. A roller 46 located outside the protective shell 41 is fixedly mounted on one end of the bidirectional lead screw 43. A limiting component 47 is provided on the other end of the bidirectional lead screw 43. An adjustment block 44 is threadedly connected to the bidirectional lead screw 43. The tops of the two adjustment blocks 44 are slidably connected to the adjustment slot 42. The bottom of the foot pedal 45 is integrally arranged with the top of the adjustment block 44. The bottom of the foot pedal 45 is in sliding contact with the top of the protective shell 41.

[0026] As an embodiment of the present invention, the limiting assembly 47 includes a limiting groove 471 located inside the protective shell 41, and a ratchet 475 fixedly installed with the bidirectional screw 43, the top of the limiting groove 471 is fixedly installed with the top inside the protective shell 41, the bottom of the limiting groove 471 is fixedly installed with the top of the movable plate 14, the inside of the limiting groove 471 is slidably connected with a rack 472, the rack 472 is slidably connected with the top of the protective shell 41, the tops of the two racks 472 are integrally connected with a pressure plate 473, and the bottom of the rack 472 is provided with a clamping spring 474, the top of the clamping spring 474 is fixedly installed with the bottom of the rack 472, the bottom of the clamping spring 474 is fixedly installed with the top of the movable plate 14, and the clamping spring 474 is located inside the limiting groove 471.

[0027] As an embodiment of the present invention, one side of the protective shell 41 is rotatably connected with a connecting shaft 476, and a pawl 478 is fixedly installed on the other end of the connecting shaft 476. A gear 477 located on one side of the pawl 478 is fixedly installed on the other end of the connecting shaft 476. The gear 477 is meshed with the rack 472, and the other end of the pawl 478 is in close contact with the ratchet 475. The pressing plate 473 is pressed down to make the rack 472 drive the gear 477 to rotate, thereby causing the pawl 478 to deflect and loosen from the ratchet 475. Then the roller 46 is rotated to drive the bidirectional screw 43 to rotate, so that the adjustment block 44 drives the pedal 45 to slide along the adjustment slot 42 to adjust the distance between the two pedals 45 to a suitable position. Then the pressing plate 473 is released, so that the rack 472 rises under the action of the clamping spring 474 and drives the gear 477 to reverse, so that the pawl 478 is in close contact with the ratchet 475 to prevent the bidirectional screw 43 from rotating to fix the distance between the two pedals 45.

[0028] As an embodiment of the present invention, two ratchets 475, two pawls 478 and two gears 477 are each provided, the two ratchets 475 rotate in opposite directions, the two pawls 478 face in opposite directions, the two gears 477 are respectively meshed with the two racks 472, the two gears 477 are located in the same plane, and the two gears 477 are located between the two pawls 478.

[0029] It should be noted that when in use, first press down the pressing plate 473, so that the rack 472 drives the gear 477 to rotate, thereby causing the pawl 478 to deflect and loosen from the ratchet 475, and then rotate the roller 46 to drive the two-way screw 43 to rotate, so that the adjustment block 44 drives the foot pedal 45 to slide along the adjustment slot 42 to adjust the distance between the two foot pedals 45 to a suitable position, and then release the pressing plate 473, so that the rack 472 rises under the action of the clamping spring 474, and drives the gear 477 to reverse, so that the pawl 478 and the ratchet 475 are pressed against each other to prevent the two-way screw 43 from rotating to fix the distance between the two foot pedals 45, and then sit on the seat 34. When squatting against the wall, the seat plate 34 is pressed down by the buttocks, so that the lifting spring 35 lifts the connecting block 33, thereby ensuring that when the patient's leg strength is insufficient, effective support can be provided for the patient. At the same time, the hand wheel 19 is rotated, and then the first synchronous wheel 110 is driven to rotate through the rotating shaft 18, and then the threaded rod 12 is driven to rotate through the first synchronous belt 111, the second synchronous wheel 112, the second synchronous belt 113 and the third synchronous wheel 17, so that the moving block 13 moves, and at the same time, the movable plate 14 and the guide block 16 simultaneously drive the foot pedal 45 in the fixed component 4 to move, thereby adjusting the distance between the feet and the backrest 2, so that the angle between the calf and the thigh is ninety degrees.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An orthopedic knee joint painful lesion rehabilitation device, comprising an adjustable base plate (1), characterized in that: A non-slip foot pad (5) is fixedly mounted on the bottom of the adjustable base plate (1); a backrest plate (2) is integrally provided on one side of the adjustable base plate (1); a backrest assembly (3) is provided on the side of the backrest plate (2) facing the adjustable base plate (1); and a fixing assembly (4) is provided above the adjustable base plate (1).

2. The orthopedic knee joint painful lesion rehabilitation device according to claim 1, characterized in that: The adjustable base plate (1) comprises a base box (11) and a rotating shaft (18) rotatably connected to the vertical plate. The bottom of the base box (11) is fixedly mounted to the anti-skid foot pad (5). A threaded rod (12) is rotatably connected to the middle part of the base box (11). One end of the threaded rod (12) penetrates into the interior of the back plate (2). Guide rods (15) located on both sides of the threaded rod (12) are fixedly mounted inside the base box (11). A moving block (13) is threadedly connected to the threaded rod (12). The top of the moving block (13) is slidably connected to the top of the base box (11). The top of the moving block (13) is integrally connected to a movable plate (14). The bottom of the movable plate (14) is integrally connected to guide blocks (16) located on both sides of the moving block (13). The guide blocks (16) are slidably connected to the guide rods (15). The fixed component (4) is arranged on the top of the movable plate (14).

3. The orthopedic knee joint painful lesion rehabilitation device according to claim 2, characterized in that: A third synchronous wheel (17) located inside the backrest (2) is fixedly mounted on one end of the threaded rod (12); the rotating shaft (18) is located on one side of the backrest assembly (3); a hand wheel (19) located outside the backrest (2) is fixedly mounted on one end of the rotating shaft (18); a first synchronous wheel (110) located inside the backrest (2) is fixedly mounted on the other end of the rotating shaft (18); a second synchronous wheel (112) located directly below the first synchronous wheel (110) is rotatably connected inside the backrest (2); the second synchronous wheel (112) and the third synchronous wheel (17) are located at the same height; the second synchronous wheel (112) is transmission-connected to the first synchronous wheel (110) via a first synchronous belt (111); and the third synchronous wheel (17) is transmission-connected to the second synchronous wheel (112) via a second synchronous belt (113).

4. The orthopedic knee joint painful lesion rehabilitation device according to claim 2, characterized in that: A through slot is provided on the top of the bottom box (11) and is slidably connected to the moving block (13) and the guide block (16); the bottom of the movable plate (14) is in slidable contact with the top of the bottom box (11).

5. The orthopedic knee joint painful lesion rehabilitation device according to claim 3, characterized in that: The backrest assembly (3) comprises a sliding groove (31), a sliding round rod (32), a connecting block (33), a seat plate (34), and a lifting spring (35); the sliding groove (31) is provided on a side of the backrest plate (2) facing the adjustment base plate (1); the upper and lower ends of the sliding round rod (32) are respectively fixedly mounted on the upper and lower ends inside the sliding groove (31); the connecting block (33) is slidably connected to the sliding round rod (32); the seat plate (34) is integrally connected to one side of the connecting block (33); the seat plate (34) is located outside the backrest plate (2); and the lifting spring (35) is sleeved on the outer peripheral surface of the sliding round rod (32).

6. The orthopedic knee joint painful lesion rehabilitation device according to claim 5, characterized in that: A total of four connecting blocks (33) are provided, and the four connecting blocks (33) are respectively penetrated and slidably connected with two sliding round rods (32), the top of the lifting spring (35) is in tight contact with the bottom of the connecting block (33) located below, and the bottom of the lifting spring (35) is in tight contact with the bottom of the sliding groove (31).

7. The orthopedic knee joint painful lesion rehabilitation device according to claim 2, characterized in that: The fixing assembly (4) comprises a protective shell (41) fixedly mounted on the top of the movable plate (14), and a pedal (45) located on the top of the protective shell (41); an adjusting slot (42) is provided on the top of the protective shell (41); a bidirectional lead screw (43) is rotatably connected inside the protective shell (41); one end of the bidirectional lead screw (43) passes through the protective shell (41); a roller (46) located outside the protective shell (41) is fixedly mounted on one end of the bidirectional lead screw (43); a limit assembly (47) is provided on the other end of the bidirectional lead screw (43); an adjusting block (44) is threadedly connected through the bidirectional lead screw (43); the tops of the two adjusting blocks (44) are slidably connected to the adjusting slot (42); the bottom of the pedal (45) is integrally arranged with the top of the adjusting block (44); and the bottom of the pedal (45) is in slidable contact with the top of the protective shell (41).

8. The orthopedic knee joint painful lesion rehabilitation device according to claim 7, characterized in that: The limiting assembly (47) comprises a limiting groove (471) located inside the protective shell (41), and a ratchet (475) fixedly mounted on the bidirectional lead screw (43); the top of the limiting groove (471) is fixedly mounted on the top of the protective shell (41); the bottom of the limiting groove (471) is fixedly mounted on the top of the movable plate (14); a rack (472) is slidably connected inside the limiting groove (471); the rack (472) is slidably connected to the top of the protective shell (41); the tops of the two racks (472) are integrally connected with a pressure plate (473); a clamping spring (474) is provided at the bottom of the rack (472); the top of the clamping spring (474) is fixedly mounted on the bottom of the rack (472); the bottom of the clamping spring (474) is fixedly mounted on the top of the movable plate (14); and the clamping spring (474) is located inside the limiting groove (471).

9. The orthopedic knee joint painful lesion rehabilitation device according to claim 8, characterized in that: A connecting shaft (476) is rotatably connected to one side of the protective shell (41), a pawl (478) is fixedly mounted on the other end of the connecting shaft (476), a gear (477) located on one side of the pawl (478) is fixedly mounted on the other end of the connecting shaft (476), the gear (477) is meshed with the rack (472), and the other end of the pawl (478) is in close contact with the ratchet (475).

10. The orthopedic knee joint painful lesion rehabilitation device according to claim 9, characterized in that: Two ratchets (475), two pawls (478) and two gears (477) are provided. The two ratchets (475) rotate in opposite directions. The two pawls (478) face in opposite directions. The two gears (477) are respectively meshed with two racks (472). The two gears (477) are located in the same plane. The two gears (477) are located between the two pawls (478).

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