Device for correcting knee osteoarthritis

Abstract

The utility model discloses a device for correcting knee osteoarthritis, which comprises a support frame and two correcting rods, and the two correcting rods are arranged in a correcting space in a bilateral symmetry manner; the correction rod comprises a fixed rod, a swing rod and a pedal plate from top to bottom, and the upper end of the fixed rod is connected to the supporting plate in a sliding mode and can transversely slide on the supporting plate and be locked; the length of the swing rod is adjustable and can be locked, the upper end of the swing rod and the upper end of the fixed rod are rotatably connected and can be locked, and a damping structure for applying resistance to the swing rod when the swing rod swings outwards is arranged at the joint of the fixed rod and the swing rod; the pedal plates are horizontally fixed to the bottom ends of the swing rods and can be located on the inner sides and the outer sides of the swing rods so that feet can step on the pedal plates, a patient exerts force, the two shanks swing outwards and repeatedly, autonomous abduction exercise can be conducted, resistance borne during abduction is large, the outer side muscle groups of the shanks can be better exercised, and the inner side gap is prevented from being too narrow.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a device for the correction of knee osteoarthritis. Background Technology

[0002] The knee joint, composed of the medial and lateral condyles of the femur, the medial and lateral condyles of the tibia, and the patella, is the largest and most complex joint in the human body, and is also prone to injury. It is a trochlear joint. The joint capsule is thin and loose, and is reinforced by ligaments around the periphery of the articular cartilage of each bone. Patients with knee osteoarthritis need to undergo rehabilitation training, but current rehabilitation training equipment is limited and cannot assist patients in exercising the inward and outward swing of the lower leg, thus reducing the rehabilitation effect of the knee joint during training. Therefore, a rehabilitation exercise device for patients with knee osteoarthritis is designed to solve the problems mentioned above. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a device for the correction of knee osteoarthritis that can assist patients in exercising the inward and outward swinging of the lower leg.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A device for the correction of knee osteoarthritis, characterized in that it comprises:

[0006] A support frame with a horizontal support plate on top and a corrective space below the support plate for lower limb exercises; and

[0007] Two orthodontic bars are arranged symmetrically on the left and right sides within the orthodontic space;

[0008] The corrective rod, from top to bottom, includes:

[0009] A fixed rod, the upper end of which is slidably attached to a support plate, can slide laterally on the support plate and be locked;

[0010] The swing arm is adjustable in length and can be locked. A strap for restraining the patient's lower leg is fixed to the swing arm. The upper end of the swing arm is rotatably connected to the upper end of the fixed rod and can be locked. The connection between the fixed rod and the swing arm has a damping structure that applies resistance to the swing arm when it swings outward.

[0011] The foot pedal is horizontally positioned and is rotatably connected to the lower end of the swing arm and can be locked, allowing the foot pedal to be positioned on the inner and outer sides of the swing arm.

[0012] A further technical solution is that the lower end of the fixed rod is inserted into and connected to the upper end of the swing rod through a first rotating shaft. The first rotating shaft is fixed to the swing rod and rotatably connected to the fixed rod through a bearing. One end of the first rotating shaft extends outward and is connected to a damping structure.

[0013] A further technical solution is that the damping structure includes:

[0014] An eccentric piece with a crescent-shaped cross-section is fixed to the outer half of the first rotating shaft. The eccentricity of the outer spherical surface of the eccentric piece gradually increases as the pendulum swings outward.

[0015] The lower fixing plate is located directly above the first rotating shaft and is fixed to the fixing rod;

[0016] The upper fixing plate is located above the lower fixing plate and is fixed to the fixing rod;

[0017] A floating rod, which is vertical and movable, passes through the lower fixed plate and the upper fixed plate. The upper end of the floating rod has an external thread and is connected to a first lock nut, which is located between the lower fixed plate and the upper fixed plate.

[0018] The first friction plate is fixed to the lower end of the floating rod and can contact the first rotating shaft; and

[0019] The first spring is sleeved on the floating rod between the first friction plate and the lower fixed plate.

[0020] A further technical solution is that the swing arm includes:

[0021] A fixed tube with a non-circular inner cavity;

[0022] The locking cylinder is horizontally fixed to the lower end of the fixing tube. It has a transverse groove inside the locking cylinder, one end of which is closed and the other end is open. The locking cylinder has a through hole that communicates with the fixing tube.

[0023] The quick-adjusting shaft has a stepped structure. The thicker end of the quick-adjusting shaft is slidably placed in the slide groove, and the thinner end extends out from the opening on the slide groove. The quick-adjusting shaft has an insertion hole that communicates with the through hole, and a locking block protrudes from the inner wall of the insertion hole.

[0024] The second spring, pressed between the bottom of the slide and the quick-adjustment shaft, applies an outward thrust to the quick-adjustment shaft; and

[0025] The lifting rod is inserted into the fixed tube. The lifting rod passes downward through the insertion hole. Multiple recessed grooves are provided on the outer wall of the lifting rod at intervals. Under the action of the second spring, the lifting rod can be eccentrically set with the insertion hole, so that the locking block can be engaged in the groove, thereby realizing the lifting and locking of the lifting rod.

[0026] A further technical solution is that the lower end of the swing arm is rotatably fixed with a vertical second pivot, the second pivot can be locked with the swing arm through a first locking structure, and the second pivot is fixed with the foot pedal.

[0027] A further technical solution is that the first locking structure includes:

[0028] The first gear is fixed on the second shaft;

[0029] A locking plate is horizontally fixed to the lower end of the swing arm and located on the rear side of the swing arm. The locking plate has a through hole, and a rectangular groove is formed around the through hole on the upper surface of the locking plate.

[0030] A locking rod passes through a through hole and is rotatably fixed to a locking plate via a bearing. A second gear that meshes with a first gear is fixed at the lower end of the locking rod. The upper end of the locking rod has an external thread and a non-circular cross-section.

[0031] A locking block, fitted onto the upper end of the locking rod, is movable along the length of the locking rod and can be embedded in a recess.

[0032] A spring plate is located at the bottom of the settling tank; and

[0033] The second lock nut is threaded onto the upper end of the lock rod.

[0034] A further technical solution is that the support plate has sliding holes in the left and right directions, and both ends of the support plate have upward-facing side plates. A drive screw is rotatably fixed between the two side plates. The threads at both ends of the drive screw are in opposite directions. One end of the drive screw extends outside the side plate and can be locked by a second locking structure. A guide rod is also fixed between the two side plates. The fixed rod has a T-shaped structure, with its upper end threaded to the drive screw and sliding on the guide rod, and its lower end passing through the sliding hole.

[0035] A further technical solution is that the second locking structure includes:

[0036] A fixing sleeve is horizontally fixed to the outside of the side plate and sleeved on the outside of the drive screw. There is an annular space between the fixing sleeve and the drive screw, and the outer wall of the fixing sleeve has external threads.

[0037] Multiple second friction plates, each arc-shaped and evenly distributed circumferentially within an annular space, are fixed with a vertical insert rod. The insert rod moves radially outward through a fixed sleeve, and its outer cross-section is inclined.

[0038] The pressure sleeve has a connecting section that is threaded to the fixed sleeve and a tapered section that covers the outside of the insertion rod, wherein the inner circumferential surface of the tapered section is tapered.

[0039] A further technical solution is that the guide rod is located behind the drive screw.

[0040] A further technical solution includes a chair.

[0041] The beneficial effects of adopting the above technical solution are as follows:

[0042] When using this device for corrective exercises, the patient needs to be in a seated position. Then, place the support frame directly in front of the patient. Adjust the distance between the two corrective bars and the height of the foot pedal according to the patient's body shape. Then, step on the foot pedal and exert force, swinging both lower legs outward repeatedly to perform voluntary abduction exercises. The resistance encountered during abduction is relatively large, which can better exercise the lateral calf muscles and prevent the medial gap from becoming too narrow.

[0043] In addition, for patients with bowlegs, the swing bar is swung outward at a certain angle and then locked. The patient can place their foot on the foot pedal to maintain an abduction state and exercise the lateral calf muscles. For patients with knock-knees, the swing bar is swung inward at a certain angle and then locked. The patient can place their foot on the foot pedal to maintain an adduction state and exercise the medial calf muscles.

[0044] Furthermore, the foot pedal position is adjustable. Depending on the different exercise modes, the foot pedal can be adjusted to the inside or outside of the swing bar, using the corrective bar to limit the lower leg and prevent the patient's foot from slipping off the foot pedal. During automatic abduction exercise, the foot pedal is located inside the corrective bar; when maintaining abduction, the foot pedal is located outside the corrective bar; and when maintaining adduction, the foot pedal is located inside the corrective bar. Attached Figure Description

[0045] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0046] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0047] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0048] Figure 3 This is a schematic diagram of the structure of this utility model in the extended and maintained state;

[0049] Figure 4 This is a schematic diagram of the structure of this utility model in the inward-retracted maintenance state;

[0050] Figure 5 This is a top view of the structure of this utility model;

[0051] Figure 6 This is a schematic diagram of the left-side structure of the orthodontic rod in this utility model;

[0052] Figure 7 This is a schematic diagram of the damping structure in this utility model;

[0053] Figure 8 This is a schematic diagram of the swing arm part in this utility model;

[0054] Figure 9 This is a schematic diagram of the first locking structure in this utility model;

[0055] Figure 10 This is a top view of the locking plate in this utility model;

[0056] Figure 11 This is a schematic diagram of the second locking structure in this utility model. Detailed Implementation

[0057] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0058] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. 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.

[0059] like Figures 1 to 11 As shown, a device for the correction of knee osteoarthritis includes a support frame 100 and two corrective rods 200. The patient can operate it by sitting in front of the support frame 100.

[0060] The specific form of the support frame 100 is not limited; it can be a gate frame or an I-shaped frame, etc. A horizontal support plate is located above the support frame 100, and a corrective space for lower limb exercises is located below the support plate. Two corrective bars 200 are arranged symmetrically within the corrective space. From top to bottom, each corrective bar 200 includes a fixed bar 210, a swing bar 220, and a foot pedal 230. The upper end of the fixed bar 210 slides onto the support plate, allowing it to slide laterally and lock on the support plate.

[0061] Specifically, the support plate has sliding holes 101 in the left and right directions. Both ends of the support plate have upward-facing side plates 102. A drive screw 211 is rotatably fixed between the two side plates 102 via bearings. The threads at both ends of the drive screw 211 are in opposite directions. One end of the drive screw 211 extends outside the side plate 102 and can be locked by a second locking structure. A guide rod 212 is also fixed between the two side plates 102. The fixed rod 210 has a T-shaped structure. Its upper end is threaded to the drive screw 211 and slides on the guide rod 212. Its lower end passes through the sliding hole 101.

[0062] By rotating the drive screw 211, the two fixed rods 210 can be driven to move relative to or away from each other, so that the distance between the two orthodontic rods 200 can be adjusted to accommodate patients of different body types.

[0063] After the distance between the two orthodontic rods 200 is adjusted, the drive screw 211 is locked by the second locking structure to prevent it from rotating, thereby maintaining the stability of the two orthodontic rods 200. The second locking structure includes a fixing sleeve 213, multiple second friction plates 214, and a pressure sleeve 216.

[0064] The fixing sleeve 213 is horizontally fixed to the outside of the side plate 102 and sleeved over the drive screw 211. There is an annular space between the fixing sleeve 213 and the drive screw 211, and the outer wall of the fixing sleeve 213 has external threads. The second friction plate 214 is arc-shaped, which can increase the friction area with the drive screw 211. Alternatively, the protruding end of the drive screw 211 can be set as a smooth rod. Multiple second friction plates 214 are evenly distributed circumferentially in the annular space. A vertical insertion rod 215 is fixed to the second friction plate 214. The insertion rod 215 moves radially outward through the fixing sleeve 213, and the outer cross-section of the insertion rod 215 is inclined. The pressure sleeve 216 has a connecting section that is threaded to the fixing sleeve 213 and a tapered section that covers the insertion rod 215. The inner annular surface of the tapered section is tapered.

[0065] When it is necessary to rotate and lock the drive screw 211, rotate the pressure sleeve 216 to move it axially. The inner ring of its tapered section presses downwards against the insert rod 215, causing the insert rod 215 to move radially inwards. This drives the second friction plate 214 to grip the drive screw 211, increasing the friction between the second friction plate 214 and the drive screw 211, thereby locking the drive screw 211. When it is necessary to rotate the drive screw 211, simply rotate the pressure sleeve 216 in the opposite direction.

[0066] In addition, the guide rod 212 is located behind the drive screw 211, closer to the patient. During exercise, the guide rod 212 can also be used as a handrail to improve the safety of exercise.

[0067] The length of the swing arm 220 is adjustable and lockable, allowing for better adaptation to patients of different heights by adjusting the lengths of the two orthodontic bars 200. The swing arm 220 includes a fixed tube 2201, a locking cylinder 2203, a quick-adjustment shaft 2204, a second spring 2205, and a lifting rod 2202. The inner cavity of the fixed tube 2201 is non-circular. The locking cylinder 2203 is horizontally fixed to the lower end of the fixed tube 2201 and has a transverse groove inside. One end of the groove is closed, and the other end is open. The locking cylinder 2203 has a through hole that communicates with the fixed tube 2201. The quick-adjustment shaft 2204 has a stepped shaft structure. The thicker end of the quick-adjustment shaft 2204 slides within the groove, while the thinner end extends from the opening in the groove. The quick-adjustment shaft 2204 has an insertion hole that communicates with the through hole, and a locking block protrudes from the inner wall of the insertion hole. The second spring 2205 presses against the bottom of the slide groove and between it and the quick-adjustment shaft 2204, applying an outward thrust to the quick-adjustment shaft 2204. The lifting rod 2202 is inserted into the fixed tube 2201. The lifting rod 2202 passes downward through the insertion hole. Multiple recessed slots 2206 are provided at intervals on the outer wall of the lifting rod 2202. Under the action of the second spring 2205, the lifting rod 2202 can be eccentrically set with the insertion hole, so that the locking block is engaged in the slot 2206, realizing the lifting and locking of the lifting rod 2202.

[0068] When the length of the rocker arm 220 needs to be adjusted, press the quick-adjustment shaft 2204 inward to compress the second spring 2205, so that the lifting rod 2202 is concentric with the insertion hole, the locking block disengages from the locking groove 2206, and the lifting rod 2202 can move freely up and down. When the lifting rod 2202 moves into position, release the quick-adjustment shaft 2204. Under the action of the second spring 2205, the quick-adjustment shaft 2204 moves outward to reset, and the lifting rod 2202 is once again eccentrically aligned with the insertion hole. The locking block engages in the locking groove 2206, thereby locking the length of the rocker arm 220.

[0069] The upper end of the pendulum 220 is rotatably connected to the upper end of the fixed rod 210 and can be locked, allowing the pendulum 220 to swing inward and outward for self-exercise. Locking the pendulum 220 enables passive exercise. Furthermore, the connection between the fixed rod 210 and the pendulum 220 has a damping structure that applies resistance to the pendulum 220 when it swings outward.

[0070] The lower end of the fixed rod 210 is inserted into the upper end of the swing rod 220 and connected through the first rotating shaft 221. The first rotating shaft 221 is fixed to the swing rod 220 and rotatably connected to the fixed rod 210 through a bearing. One end of the first rotating shaft 221 extends outward and is connected to a damping structure. Preferably, the first rotating shaft 221 extends backward and faces the user for easy operation.

[0071] The damping structure includes an eccentric plate 222, a lower fixed plate 223, an upper fixed plate 224, a floating rod 225, a first friction plate 227, and a first spring 228.

[0072] The eccentric piece 222 has a crescent-shaped cross-section and is fixed to the outer half of the first rotating shaft 221. The eccentricity of the outer spherical surface of the eccentric piece 222 gradually increases as the swing rod 220 swings outward. The fixing plate is located directly above the first rotating shaft 221 and is fixed to the fixing rod 210. The upper fixing plate 224 is located above the lower fixing plate 223 and is fixed to the fixing rod 210. The floating rod 225 passes vertically and movably through the lower fixing plate 223 and the upper fixing plate 224. The upper end of the floating rod 225 has an external thread and is connected to a first lock nut 226, which is located between the lower fixing plate 223 and the upper fixing plate 224. The first friction plate 227 is fixed to the lower end of the floating rod 225 and can contact the first rotating shaft 221. The first spring 228 is sleeved on the floating rod 225 between the first friction plate 227 and the lower fixing plate 223.

[0073] When performing abduction exercises, the first pivot 221 on the left rotates clockwise, and the second pivot 231 on the right rotates counterclockwise. As the first pivot 221 rotates, the friction plate gradually pushes the first friction plate 227 upward, gradually compressing the first spring 228. As the abduction angle increases, the first spring 228 compresses and stores more energy, thus increasing the friction between the first friction plate 227 and the first pivot 221. Therefore, more force is required to achieve abduction exercises, while adduction is relatively easy.

[0074] When it is necessary to lock the angle of the rocker arm 220, adjust the position of the first locking nut 226 so that it rests against the lower part of the upper fixed plate 224, and rotate the first locking nut 226 to drive the floating rod 225 to move down, so that the first friction plate 227 rests against the first rotating shaft 221 and locks the first rotating shaft 221.

[0075] The foot pedal 230 is horizontally positioned and rotatably connected to the lower end of the swing arm 220, allowing it to be locked. This enables the foot pedal 230 to be positioned inside or outside the swing arm 220, allowing for both vertical tilting and horizontal rotation. Specifically, a vertical second pivot 231 can be rotatably fixed to the lower end of the swing arm 220. The second pivot 231 can be locked to the swing arm 220 via a first locking structure, and the second pivot 231 is fixed to the foot pedal 230.

[0076] The first locking structure includes a first gear 232, a locking plate 233, a locking rod 235, a locking block 237, a spring plate 238, and a second locking nut 239. The first gear 232 is fixed to the second rotating shaft 231. The locking plate 233 is horizontally fixed to the lower end of the rocker arm 220 and located behind the rocker arm 220. The locking plate 233 has a through hole, and a rectangular groove 234 surrounds the through hole on its upper surface. The locking rod 235 passes through the through hole and is rotatably fixed to the locking plate 233 via a bearing. A second gear 236, meshing with the first gear 232, is fixed to the lower end of the locking rod 235. The upper end of the locking rod 235 has an external thread and a non-circular cross-section. The locking block 237 is sleeved on the upper end of the locking rod 235 and can only move along the length of the locking rod 235, not rotate relative to it. The locking block 237 can be embedded in the groove 234. Spring plate 238 is located at the bottom of recess 234. Second lock nut 239 is threaded to the upper end of lock rod 235. Preferably, when the first gear 232 needs to rotate 180°, the second gear 236 can be rotated 180° as well, so the lock block 237 can be set as rectangular.

[0077] When the angle of the foot pedal 230 needs to be adjusted, the second locking nut 239 is moved upward. Under the action of the spring plate 238, the locking block 237 pops upward into the recess 234. Then, the locking block 237 can act as a handle. Rotating the locking rod 235 causes the shaft to rotate under the transmission of two gears. Rotating the shaft 180° adjusts the position of the foot pedal 230, placing it inside or outside the correction rod 200. After adjusting the position of the foot pedal 230, the second locking nut 239 is moved downward, pressing the locking block 237 back into the recess 234, locking the locking rod 235.

[0078] When using this device for corrective exercises, the patient needs to be in a seated position; therefore, the device can also be equipped with a chair. Place the support frame 100 directly in front of the patient. Adjust the distance between the two corrective bars 200 and the height of the foot pedal 230 according to the patient's body shape. Then, place the foot on the foot pedal 230 and exert force, repeatedly swinging both lower legs outwards to perform voluntary abduction exercises. The greater resistance encountered during abduction allows for better exercise of the lateral calf muscles, preventing excessive narrowing of the medial gap.

[0079] In addition, for patients with bowlegs, such as Figure 3 As shown, after swinging the lever 220 outward at a certain angle and locking it, the patient can place their foot on the foot pedal 230 to maintain an abduction position, thus exercising the lateral calf muscles; for patients with X-shaped legs, such as... Figure 4As shown, after the swing bar 220 is swung inward at a certain angle and locked, the patient can place their foot on the foot pedal 230 to maintain the adduction state and exercise the inner calf muscles. When performing adduction exercises, a strap can be set on the corrective bar 200 to bind the patient's calf to the corrective bar 200, thereby better maintaining an effective adduction state.

[0080] Furthermore, the position of the foot pedal 230 is adjustable. Depending on the different exercise modes, the foot pedal 230 can be adjusted to the inside or outside of the swing bar 220, using the corrective bar 200 to limit the lower leg and prevent the patient's foot from slipping off the foot pedal 230. During automatic abduction exercise, the foot pedal 230 is located inside the corrective bar 200; when maintaining abduction, the foot pedal 230 is located outside the corrective bar 200; and when maintaining adduction, the foot pedal 230 is located inside the corrective bar 200.

[0081] The above are merely preferred embodiments of this utility model. Any simple modifications, variations, and equivalent substitutions made by any person based on the content of this utility model shall fall within the protection scope of this utility model.

Claims

1. A device for the correction of knee osteoarthritis, characterized in that, include: A support frame (100) has a horizontal support plate on top and an orthopedic space below the support plate for the patient to exercise his / her lower limbs. and Two orthodontic bars (200) are arranged symmetrically on the left and right sides in the orthodontic space; The corrective rod (200) comprises, from top to bottom: The fixed rod (210) has its upper end slidably attached to the support plate and can slide laterally on the support plate and be locked. A swing arm (220) is adjustable in length and lockable. A strap for binding the patient's lower leg is fixed on the swing arm (220). The upper end of the swing arm (220) is rotatably connected to the upper end of the fixed rod (210) and lockable. The connection between the fixed rod (210) and the swing arm (220) has a damping structure that applies resistance to the swing arm (220) when it swings outward. The foot pedal (230) is horizontally positioned and is rotatably connected to the lower end of the swing arm (220) and can be locked, so that the foot pedal (230) can be located on the inner and outer sides of the swing arm (220).

2. The device for correcting knee osteoarthritis according to claim 1, characterized in that, The lower end of the fixed rod (210) is inserted into the upper end of the swing rod (220) and connected by the first rotating shaft (221). The first rotating shaft (221) is fixed to the swing rod (220) and rotatably connected to the fixed rod (210) through a bearing. One end of the first rotating shaft (221) extends outward and is connected to a damping structure.

3. The device for correcting knee osteoarthritis according to claim 2, characterized in that, The damping structure includes: The eccentric piece (222) has a crescent-shaped cross section. The eccentric piece (222) is fixed to the outer half of the first rotating shaft (221). The eccentricity of the outer spherical surface of the eccentric piece (222) gradually increases as the swing rod (220) swings outward. The lower fixing plate (223) is located directly above the first rotating shaft (221) and fixed to the fixing rod (210); The upper fixing plate (224) is located above the lower fixing plate (223) and fixed to the fixing rod (210); A floating rod (225) passes vertically and movably through the lower fixed plate (223) and the upper fixed plate (224). The upper end of the floating rod (225) has an external thread and is connected to a first lock nut (226). The first lock nut (226) is located between the lower fixed plate (223) and the upper fixed plate (224). The first friction plate (227) is fixed to the lower end of the floating rod (225) and is able to contact the first rotating shaft (221); and The first spring (228) is sleeved on the floating rod (225) between the first friction plate (227) and the lower fixed plate (223).

4. The device for correcting knee osteoarthritis according to claim 1, characterized in that, The swing arm (220) includes: The fixed tube (2201) has a non-circular inner cavity; The locking cylinder (2203) is horizontally fixed to the lower end of the fixing tube (2201). The locking cylinder (2203) has a transverse sliding groove inside. One end of the sliding groove is closed and the other end is open. The locking cylinder (2203) has a through hole that communicates with the fixing tube (2201). The quick-adjusting shaft (2204) has a stepped structure. The thick end of the quick-adjusting shaft (2204) is slidably placed in the slide groove, and the thin end extends out from the opening on the slide groove. The quick-adjusting shaft (2204) has an insertion hole that communicates with the through hole. A locking block protrudes from the inner wall of the insertion hole. The second spring (2205) is pressed between the bottom of the groove and the quick-adjustment shaft (2204), applying an outward thrust to the quick-adjustment shaft (2204); and The lifting rod (2202) is inserted into the fixed tube (2201). The lifting rod (2202) passes downward through the insertion hole. Multiple recessed slots (2206) are provided on the outer wall of the lifting rod (2202) at intervals. Under the action of the second spring (2205), the lifting rod (2202) can be eccentrically set with the insertion hole, so that the locking block is locked into the slot (2206), realizing the lifting and locking of the lifting rod (2202).

5. The device for correcting knee osteoarthritis according to claim 1, characterized in that, The lower end of the swing arm (220) is rotatably fixed with a vertical second pivot (231). The second pivot (231) can be locked with the swing arm (220) through a first locking structure. The second pivot (231) is fixed with the foot pedal (230).

6. The device for correcting knee osteoarthritis according to claim 5, characterized in that, The first locking structure includes: The first gear (232) is fixed on the second rotating shaft (231); The locking plate (233) is horizontally fixed to the lower end of the swing rod (220) and located on the rear side of the swing rod (220). The locking plate (233) has a through hole, and a rectangular groove (234) is formed around the through hole on the upper surface of the locking plate (233). The locking rod (235) passes through a through hole and is rotatably fixed to the locking plate (233) via a bearing. A second gear (236) that meshes with the first gear (232) is fixed at the lower end of the locking rod (235). The upper end of the locking rod (235) has an external thread and a non-circular cross-section. The locking block (237) is sleeved on the upper end of the locking rod (235) and can move along the length direction of the locking rod (235). The locking block (237) can be embedded in the groove (234). Spring sheet (238) is located at the bottom of settling tank (234); and The second lock nut (239) is threaded to the upper end of the lock rod (235).

7. The device for correcting knee osteoarthritis according to claim 1, characterized in that, The support plate has a sliding hole (101) in the left and right direction. Both ends of the support plate have upward side plates (102). A drive screw (211) is rotatably fixed between the two side plates (102). The threads at both ends of the drive screw (211) are opposite. One end of the drive screw (211) extends to the outside of the side plate (102) and can be locked by a second locking structure. A guide rod (212) is also fixed between the two side plates (102). The fixed rod (210) has a T-shaped structure. Its upper end is threaded to the drive screw (211) and slides on the guide rod (212). Its lower end passes through the sliding hole (101).

8. The device for correcting knee osteoarthritis according to claim 7, characterized in that, The second locking structure includes: A fixing sleeve (213) is horizontally fixed to the outside of the side plate (102) and sleeved on the outside of the drive screw (211). There is an annular space between the fixing sleeve (213) and the drive screw (211). The outer wall of the fixing sleeve (213) has external threads. Multiple second friction plates (214) are arc-shaped and evenly distributed circumferentially within an annular space. Each second friction plate (214) is fixed with a vertical insert rod (215). The insert rod (215) moves radially outward through a fixed sleeve (213), and the outer cross-section of the insert rod (215) is inclined. The pressure sleeve (216) has a connecting section that is threaded to the fixed sleeve (213) and a tapered section that covers the outside of the insert rod (215), the inner annular surface of the tapered section being tapered.

9. The device for correcting knee osteoarthritis according to claim 7, characterized in that, The guide rod (212) is located behind the drive screw (211).

10. The device for correcting knee osteoarthritis according to claim 1, characterized in that, It also includes a chair.

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