A knee motion impairment assisted rehabilitation device

Abstract

The application discloses a kind of knee joint movement injury auxiliary rehabilitation devices, it is related to knee joint rehabilitation technical field, including mounting plate, the top fixed installation of mounting plate has legging mechanism and exercise auxiliary component, the legging mechanism is located on the side of mounting plate far from exercise auxiliary component, the bottom of mounting plate is fixedly connected with multiple pad blocks;Through the mutual cooperation of mounting plate, legging mechanism, counterweight mechanism, pressure mechanism and support seat, so that the device can cope with counterweight flexion and extension training, bed or sitting simulation real walking pressure and multiple use scenarios, wide application range, through the fixing mode of air bag inflatable, different leg circumference and limb swelling state can be self-adapting, wear firm, not extrude sick place, training is not easy to slip, when driving assembly is pressed to patient leg by treading support cooperation for rehabilitation exercise, equipped with electric push rod and elastic rope double emergency stop structure, overpressure rapid unloading, avoid secondary injury of knee joint.

Description

Technical Field

[0001] This invention relates to the field of knee joint rehabilitation technology, and in particular to an auxiliary rehabilitation device for knee joint sports injuries. Background Technology

[0002] The knee joint is a core joint for weight-bearing and movement in the human body. Sports injuries (meniscus tears, cruciate ligament injuries, synovitis, patellar contusions, etc.) are often accompanied by limited joint movement, muscle weakness, and decreased weight-bearing tolerance. Postoperative or conservative treatment phases require gradual flexion-extension and weight-bearing rehabilitation training to prevent joint stiffness and muscle atrophy. Currently available knee rehabilitation devices have many obvious shortcomings: traditional knee rehabilitation devices usually protect the knee joint to prevent excessive stress in the early stages, and weight-bearing training usually involves weight-bearing flexion-extension exercises. However, neither protecting the knee joint from stress nor weight-bearing training can simulate the pressure caused by the patient's own weight when walking normally. If patients are directly asked to stand and walk for training, firstly, the pressure on the knee joint cannot be quantitatively adjusted due to the influence of body weight in the early stages, which can easily cause secondary injury. Secondly, some patients have difficulty walking and cannot stand, so simple flexion-extension training cannot meet the requirements of simulating real walking conditions, thus the training effect is poor and affects the rehabilitation progress. Because existing technologies generally suffer from poor fixed adaptation, single training mode, lack of pressure-based quantitative monitoring, weak emergency protection, and insufficient body position adjustment capabilities, they are unable to meet the needs of knee joint injury patients for staged, multi-scenario, safe and precise rehabilitation. Therefore, this application proposes an auxiliary rehabilitation device for knee joint sports injuries to solve the above problems. Summary of the Invention

[0003] This invention provides an auxiliary rehabilitation device for knee joint sports injuries to solve the above-mentioned technical problems.

[0004] To solve the above-mentioned technical problems, the present invention provides an auxiliary rehabilitation device for knee joint sports injuries, including a mounting plate, a leg binding mechanism and exercise assistive components are fixedly mounted on the top of the mounting plate, the leg binding mechanism is located on the side of the mounting plate away from the exercise assistive components, and a plurality of elevating blocks are fixedly connected to the bottom of the mounting plate.

[0005] Preferably, the leg binding mechanism includes a first fixing sleeve and a second fixing sleeve, the second fixing sleeve being located on the side of the first fixing sleeve closer to the exercise assist component, and both the first fixing sleeve and the second fixing sleeve being fixedly connected to the mounting plate by bolts with fixing seats.

[0006] Preferably, the first fixing sleeve consists of an annular outer sleeve and an inner liner, wherein the inner liner is fixedly connected to the inside of the annular outer sleeve; The annular outer sleeve includes an arc-shaped support plate, and arc-shaped cover plates are movably connected to both ends of the arc-shaped support plate via a pivot. Ear plates are fixedly connected to the outer side wall of the end of the arc-shaped cover plate. The two ear plates are fixedly connected by a first hand-tightened screw. The arc-shaped support plate and the two arc-shaped cover plates form an annular outer sleeve. The liner includes multiple airbags, which are fixedly connected to the inner walls of the arc-shaped support plate and the arc-shaped cover plate, and the multiple airbags are arranged in a circular array around the central axis of the annular outer jacket. An air tube is fixedly connected between two adjacent airbags, and an inflation nozzle is fixedly connected to one side of one of the airbags.

[0007] Preferably, the exercise aid is a counterweight mechanism, which consists of multiple counterweight blocks. The counterweight blocks are fitted onto the top of the mounting plate, and the tops of two counterweight blocks that are far apart from each other are threaded with a third hand-tightening screw. The counterweight blocks are fixedly connected to the mounting plate by the third hand-tightening screw.

[0008] Preferably, the leg-binding mechanism further includes a third fixing sleeve, which is located on the side of the first fixing sleeve away from the second fixing sleeve. Plate sleeves are fixedly connected to both sides of the first fixing sleeve, the second fixing sleeve, and the fixing seat. A second hand-tightening screw is threaded onto each plate sleeve. A connecting plate is connected through the three adjacent plate sleeves on the left and right sides. The plate sleeves are fixedly connected to the connecting plate by the second hand-tightening screw.

[0009] Preferably, the exercise aid is a pressure applying mechanism, which consists of a foot pedal support, a drive assembly, an emergency component, and a detection module; The foot support includes a base, which is sleeved on the top of the mounting plate. A fixing plate is fixedly connected to the top of the base. A pedal is provided on the side of the fixing plate near the leg binding mechanism. Limiting pins are fixedly connected to the four corners of one side of the pedal. The limiting pins pass through the fixing plate. Two first reinforcing plates are fixedly connected between the side of the fixing plate away from the pedal and the base. The top of the base has an opening. The drive assembly includes a U-shaped plate located at the angle between the fixed plate and the base on the side away from the pedal. Two second reinforcing plates are fixedly connected to the bottom angle of the inner side of the U-shaped plate. A motor is fixedly connected to the bottom inside the U-shaped plate, and a drive gear is fixedly connected to the output shaft of the motor. A first opening is provided at the bottom of the U-shaped plate, and a transmission gear is movably connected inside the first opening via a rotating shaft. The transmission gear is meshed with the drive gear below the first opening and is located directly below the first opening. The transmission gear passes through the first opening. A rack is embedded in the top of the mounting plate, and the transmission gear meshes with the rack. The emergency assembly includes an electric push rod, which is fixedly connected to the side of the fixed plate away from the pedal. The end of the pedal piston rod is fixedly connected to the top of the U-shaped plate. A first rope post is fixedly connected to the top of the base. The first rope post is located on the side of the drive assembly away from the fixed plate. A second rope post is inserted into the top of the mounting plate. An elastic rope is fixedly connected between the first rope post and the second rope post. Two sliding sleeves are fixedly connected to the side of the fixed plate near the drive assembly. The U-shaped plate is slidably connected to the fixed plate through the sliding sleeves. The detection module includes an electronic control box, a display, and a pressure sensor. The electronic control box is fixedly connected to the side of the fixed plate away from the pedal and is located above the electric push rod. The display is fixedly connected to the edge of the fixed plate by bolts. The pressure sensor is fixedly connected to the side of the fixed plate near the pedal and is located at the center between the fixed plate and the pedal.

[0010] Preferably, a support base is movably connected below the mounting plate. The support base includes a floor. Two first telescopic rods are fixedly connected to the top of the floor near the leg-binding mechanism. The top of the first telescopic rods is movably connected to an adjacent raised block via a hinge. A second telescopic rod is movably connected to the top of the floor near the exercise aid component via a hinge. The top of the second telescopic rod is movably connected to an adjacent raised block via a hinge.

[0011] Compared with related technologies, the knee joint sports injury assistive rehabilitation device provided by the present invention has the following beneficial effects: 1. Through the cooperation of the mounting plate, leg binding mechanism, counterweight mechanism, pressure application mechanism and support base, the device can cope with multiple usage scenarios such as counterweight flexion and extension training, bed rest or sitting to simulate real walking pressure, and has a wide range of applications;

[0012] 2. The leg binding mechanism uses multiple inflatable sleeves to provide secure fixation, which can adapt to different leg circumferences and limb swelling conditions. It is secure to wear, does not compress the affected area, and is not easy to slip during training.

[0013] 3. When applying pressure to the patient's legs for rehabilitation exercises using the foot pedal support and drive components, an emergency component is used to deal with sudden situations, enabling the pressure application mechanism to quickly stop and disengage from the pressure application mode. Equipped with a dual emergency stop structure of electric push rod and elastic rope, it can quickly release overpressure and avoid secondary damage to the knee joint. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the mounting plate structure of the present invention; Figure 3 This is a schematic diagram of the counterweight structure of the present invention; Figure 4 This is a schematic diagram of the first fixing sleeve structure of the present invention; Figure 5 This is a schematic diagram of the first fixed sleeve in the open state of the present invention; Figure 6 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention; Figure 7 This is a first-view structural schematic diagram of the pressure application mechanism of the present invention; Figure 8 This is a schematic diagram of the pressure application mechanism of the present invention from a second perspective. Figure 9 This is an exploded view of the foot support frame of the present invention; Figure 10 This is a schematic diagram of the drive component structure of the present invention; Figure 11 This is a schematic diagram of the overall structure of Embodiment 3 of the present invention.

[0015] Numbered in the diagram: 1. Mounting plate, 11. Elevating block, 12. Rack, 2. Leg strap mechanism, 21. First fixing sleeve, 211. Annular outer sleeve, 2111. Arc-shaped support plate, 2112. Arc-shaped cover plate, 2113. Ear plate, 2114. First hand-tightening screw, 212. Liner, 2121. Airbag cushion, 2122. Air tube, 2123. Inflation nozzle, 22. Second fixing sleeve, 23. Fixing base, 24. Third fixing sleeve, 25. Plate sleeve, 26. Second hand-tightening screw, 27. Connecting plate, 3. Counterweight mechanism, 31. Counterweight block, 32. Third hand-tightening screw, 4. Pressure application mechanism, 41. Foot support Frame, 411, base, 412, fixing plate, 413, pedal, 414, limit pin, 415, first reinforcing plate, 42, drive assembly, 421, U-shaped plate, 422, second reinforcing plate, 423, first opening, 424, transmission gear, 425, motor, 426, drive gear, 43, emergency assembly, 431, electric push rod, 432, sliding sleeve, 433, first rope post, 434, second rope post, 435, elastic rope, 44, electrical control box, 45, display, 46, pressure sensor, 5, support base, 51, floor, 52, first telescopic rod, 53, second telescopic rod. Detailed Implementation

[0016] Please see Figure 1-11 The technical solution provided by the present invention specifically includes the following embodiments:

[0017] Example 1: A knee joint sports injury auxiliary rehabilitation device includes a mounting plate 1. A leg binding mechanism 2 and an exercise assist component are fixedly mounted on the top of the mounting plate 1. The leg binding mechanism 2 is located on the side of the mounting plate 1 away from the exercise assist component. A plurality of elevating blocks 11 are fixedly connected to the bottom of the mounting plate 1. The leg binding mechanism 2 includes a first fixing sleeve 21 and a second fixing sleeve 22. The second fixing sleeve 22 is located on the side of the first fixing sleeve 21 that is close to the exercise auxiliary component. The first fixing sleeve 21 and the second fixing sleeve 22 are both fixedly connected to the mounting plate 1 by a fixing seat 23 through bolts.

[0018] The first fixing sleeve 21 consists of an annular outer sleeve 211 and an inner liner 212, wherein the inner liner 212 is fixedly connected to the inside of the annular outer sleeve 211;

[0019] The annular outer sleeve 211 includes an arc-shaped support plate 2111, and arc-shaped cover plates 2112 are movably connected to both ends of the arc-shaped support plate 2111 via pivots. Ear plates 2113 are fixedly connected to the outer side wall of the end of the arc-shaped cover plate 2112. The two ear plates 2113 are fixedly connected by a first hand-tightening screw 2114. The arc-shaped support plate 2111 and the two arc-shaped cover plates 2112 form an annular outer sleeve 211.

[0020] The inner liner 212 includes multiple airbags 2121, which are fixedly connected to the inner walls of the arc-shaped support plate 2111 and the arc-shaped cover plate 2112, respectively. The multiple airbags 2121 are arranged in a circular array around the central axis of the annular outer sleeve 211. An air tube 2122 is fixedly connected between two adjacent airbags 2121, and an inflation nozzle 2123 is fixedly connected to one side of one of the airbags 2121.

[0021] The exercise aid component is a counterweight mechanism 3, which consists of multiple counterweight blocks 31. The counterweight blocks 31 are sleeved on the top of the mounting plate 1. The tops of two counterweight blocks 31 that are far apart from each other are threaded with a third hand-tightening screw 32. The counterweight blocks 31 are fixedly connected to the mounting plate 1 by the third hand-tightening screw 32.

[0022] The main usage mode of this embodiment is to apply counterweight to the patient's legs. The patient can sit in a chair or other place, and then fix the first fixing sleeve 21 on the leg slightly below the knee joint, while the second fixing sleeve 22 is fixed on the lower leg to achieve two-point positioning of the mounting plate 1. Then, according to the needs, an appropriate number of counterweight blocks 31 are selected and fitted onto the mounting plate 1. Finally, the entire counterweight mechanism 3 can be fixed by tightening the third hand-tightening screw 32 on the two outermost counterweight blocks 31. Subsequently, the patient can exercise by bending and lifting the leg alternately. The counterweight of the counterweight mechanism 3 can adapt to the training needs of different stages to assist the patient's knee joint rehabilitation.

[0023] Since both the first fixing sleeve 21 and the second fixing sleeve 22 are fixed to the mounting plate 1 by bolts and fixing seat 23, they can be removed when damaged or stored.

[0024] When wearing the first fixing sleeve 21, unscrew the first hand-tightening screw 2114 to allow the two arc-shaped cover plates 2112 to unfold. Then, slip the arc-shaped support plate 2111 over the legs from below. After that, close the arc-shaped cover plate 2112 again and tighten the first hand-tightening screw 2114. At this time, although the ring-shaped outer sleeve 211 is on the legs, it cannot be properly fitted to the leg size for fixation. Therefore, an air pump or other inflation component can be connected to the inflation nozzle 2123 to inflate the inner liner 212. During this process, the air tube 2122 connects to each airbag pad 2121 so that each airbag pad 2121 inflates evenly. Then, the inner liner 212 allows the ring-shaped outer sleeve 211 to fit the leg size for fixation. It is worth mentioning that there is no air tube 2122 between the two uppermost airbag pads 2121. This allows the air tube 2122 in this area to unfold with the arc-shaped cover plate 2112 for easy wearing and removal of the leg.

[0025] Example 2: Based on Example 1, the leg binding mechanism 2 further includes a third fixing sleeve 24. The third fixing sleeve 24 is located on the side of the first fixing sleeve 21 away from the second fixing sleeve 22. Plate sleeves 25 are fixedly connected to both side walls of the first fixing sleeve 21, the second fixing sleeve 22 and the fixing base 23. A second hand-tightening screw 26 is threaded onto the plate sleeve 25. A connecting plate 27 is connected through the three adjacent plate sleeves 25 on the left and right sides. The plate sleeves 25 are fixedly connected to the connecting plate 27 by the second hand-tightening screw 26.

[0026] The difference from Embodiment 1 is that the exercise assist component in Embodiment 2 does not use the counterweight mechanism 3, but instead uses the pressure application mechanism 4. The exercise assist component is the pressure application mechanism 4, which consists of a foot pedal bracket 41, a drive component 42, an emergency component 43, and a detection module.

[0027] The foot support 41 includes a base 411, which is sleeved on the top of the mounting plate 1. A fixing plate 412 is fixedly connected to the top of the base 411. A foot pedal 413 is provided on the side of the fixing plate 412 near the leg binding mechanism 2. Limiting pins 414 are fixedly connected to the four corners of one side of the foot pedal 413. The limiting pins 414 pass through the fixing plate 412. Two first reinforcing plates 415 are fixedly connected between the side of the fixing plate 412 away from the foot pedal 413 and the base 411. A 416 is opened on the top of the base 411.

[0028] The drive assembly 42 includes a U-shaped plate 421, which is located at the angle between the fixed plate 412 away from the pedal 413 and the base 411. Two second reinforcing plates 422 are fixedly connected to the bottom angle of the inner side of the U-shaped plate 421. A motor 425 is fixedly connected to the bottom inside the U-shaped plate 421. A drive gear 426 is fixedly connected to the output shaft of the motor 425. A first opening 423 is provided at the bottom of the U-shaped plate 421. A transmission gear 424 is movably connected to the first opening 423 through a rotating shaft. The transmission gear 424 is meshed with the drive gear 426 below. The drive gear 416 is located directly below the first opening 423 and passes through the drive gear 424. A rack 12 is embedded in the top of the mounting plate 1, and the transmission gear 424 is meshed with the rack 12.

[0029] The emergency component 43 includes an electric push rod 431, which is fixedly connected to the side of the fixed plate 412 away from the pedal 413. The piston rod end of the pedal 413 is fixedly connected to the top of the U-shaped plate 421. A first rope post 433 is fixedly connected to the top of the base 411. The first rope post 433 is located on the side of the drive component 42 away from the fixed plate 412. A second rope post 434 is inserted into the top of the mounting plate 1. An elastic rope 435 is fixedly connected between the first rope post 433 and the second rope post 434. Two sliding sleeves 432 are fixedly connected to the side of the fixed plate 412 near the drive component 42. The U-shaped plate 421 is slidably connected to the fixed plate 412 through the sliding sleeves 432.

[0030] The detection module includes an electrical control box 44, a display 45, and a pressure sensor 46. The electrical control box 44 is fixedly connected to the side of the fixing plate 412 away from the pedal 413 and is located above the electric push rod 431. The display 45 is fixedly connected to the edge of the fixing plate 412 by bolts. The pressure sensor 46 is fixedly connected to the side of the fixing plate 412 near the pedal 413 and is located at the center between the fixing plate 412 and the pedal 413.

[0031] This embodiment is designed for use when the patient is lying in bed. The device is placed on the bed, with the mounting plate 1 suspended in the air by the bolster block 11. Then, the third fixing sleeve 24 is fixedly fitted above the knee joint of the leg. Subsequently, two connecting plates 27 are passed through the plate sleeves 25 on the first fixing sleeve 21, the second fixing sleeve 22, and the third fixing sleeve 24 in sequence and tightened by the second hand-tightening screw 26. The inner lining 212 in the first fixing sleeve 21 and the second fixing sleeve 22 is appropriately deflated so that although the first fixing sleeve 21 and the second fixing sleeve 22 are fitted on the leg, they are not fixed to the leg. It is worth mentioning that the second fixing sleeve 22 and the third fixing sleeve 24 have the same structure as the first fixing sleeve 21, only the fixing position is different. Therefore, the specific structure of the second fixing sleeve 22 and the third fixing sleeve 24 will not be described in detail.

[0032] After the leg-binding mechanism 2 is fixed to the patient's leg and adjusted, the counterweight mechanism 3 is removed and the pressure-applying mechanism 4 is installed. At this point, the pressure-applying mechanism 4 is controlled via a remote control (not shown in the diagram, as such controllers are standard devices). The controller can be wired or wirelessly connected to the remote control. The pressure-applying mechanism 4 is mainly used to apply pressure to the soles of the feet to simulate the pressure generated by the body's weight when a person is standing on the ground. Specifically, the patient's foot is placed on the electric push rod 431, and the heel rests on the base 411 for support. Then, the drive assembly 42 drives the foot pedal bracket 41 closer to the foot to apply pressure to the patient's lower limbs to simulate the pressure situation of standing. During this process, the pressure sensor 46 can detect the pressure of the pedal 413 against the patient's foot. The pressure, which is the pressure borne by the patient's lower limbs, is displayed in real time on the display 45. Of course, the pressure value can also be preset so that the drive component 42 can operate automatically. For example, a maximum pressure threshold can be set and a holding time can be set. In this way, the drive component 42 will drive the foot pedal bracket 41 to press against the patient's foot and continuously increase the pushing force until the pressure value detected by the pressure sensor 46 reaches the set threshold. Then, it will stop increasing and hold for the set time. After the time is up, it will move in the opposite direction to rest. Set the rest time and then repeat the operation for rehabilitation exercise. It should be noted that the display 45 used to display the pressure value can be installed on either side of the fixing plate 412, so it can be used for both legs and can also adapt to the user's observation habits.

[0033] When the foot pedal 41 is pushed towards the patient's lower limb, the elastic rope 435 is stretched and generates elastic force. If the patient feels too much pressure and discomfort during exercise, and there is no time to control the drive component 42 to reverse drive the foot pedal 41 away, the pressure mechanism 4 can be instantly moved away from the patient's foot and stop applying pressure by using the emergency stop button on the remote control. Alternatively, the maximum danger threshold can be set in the control box 44. When an emergency stop is needed, the electric push rod 431 immediately pulls the U-shaped plate 421 upward, causing the transmission gear 424 to separate from the rack 12. At this time, the elastic force of the elastic rope 435 will instantly pull the pressure mechanism 4 away from the foot to achieve a quick emergency stop function.

[0034] When the foot pedal bracket 41 is moved by the drive assembly 42, the motor 425 drives the drive gear 426 to rotate, and then the transmission gear 424 drives it to cooperate with the rack 12 to drive the pressure application mechanism 4 to apply pressure to the patient's lower limbs along the mounting plate 1.

[0035] Example 3: Based on Example 2, a support base 5 is movably connected below the mounting plate 1. The support base 5 includes a floor 51. Two first telescopic rods 52 are fixedly connected to the top of the floor 51 near the leg strap mechanism 2. The top of the first telescopic rod 52 is movably connected to the adjacent raised block 11 through a hinge. A second telescopic rod 53 is movably connected to the top of the floor 51 near the exercise assist component through a hinge. The top of the second telescopic rod 53 is movably connected to the adjacent raised block 11 through a hinge.

[0036] When the patient does not want to lie in bed, they can sit in a chair or on the bed. Then, a support seat 5 is installed under the mounting plate 1 for support. The support seat 5 can be placed on the ground. The height of the leg binding mechanism 2 on the mounting plate 1 can be adjusted by adjusting the height of the first telescopic rod 52 to adapt to the patient's body height. The angle of the mounting plate 1 can be adjusted by adjusting the length of the second telescopic rod 53 to improve the patient's comfort. Then, the patient can exercise again through the pressure mechanism 4.

[0037] Example 4: Based on Example 2, when the patient needs to walk normally but avoids pressure on the knee joint, the fixing seat 23 below the first fixing sleeve 21 and the second fixing sleeve 22 can be removed. At this time, the patient's leg is only fixed with the first fixing sleeve 21, the second fixing sleeve 22 and the third fixing sleeve 23, and the three fixing sleeves are also fixedly connected into a whole by two connecting plates. At this time, the pressure on the knee joint is small when the patient walks. The leg binding mechanism 2 is equivalent to the exoskeleton directly bearing the force for the knee joint. However, the patient's knee joint cannot be bent temporarily.

Claims

1. A knee joint sports injury assistive rehabilitation device, comprising a mounting plate (1), characterized in that: The mounting plate (1) is fixedly mounted with a leg binding mechanism (2) and exercise assist components. The leg binding mechanism (2) is located on the side of the mounting plate (1) away from the exercise assist components. The mounting plate (1) is fixedly connected with multiple raising blocks (11) at the bottom.

2. The knee joint sports injury assistive rehabilitation device according to claim 1, characterized in that, The leg binding mechanism (2) includes a first fixing sleeve (21) and a second fixing sleeve (22). The second fixing sleeve (22) is located on the side of the first fixing sleeve (21) closer to the exercise auxiliary component. The first fixing sleeve (21) and the second fixing sleeve (22) are both fixedly connected to the mounting plate (1) by bolts with fixing seats (23).

3. The knee joint sports injury assistive rehabilitation device according to claim 2, characterized in that, The first fixing sleeve (21) consists of an annular outer sleeve (211) and an inner liner (212), wherein the inner liner (212) is fixedly connected to the inside of the annular outer sleeve (211); The annular outer sleeve (211) includes an arc-shaped support plate (2111), and arc-shaped cover plates (2112) are movably connected to both ends of the arc-shaped support plate (2111) via a pivot. Ear plates (2113) are fixedly connected to the outer side wall of the end of the arc-shaped cover plate (2112). The two ear plates (2113) are fixedly connected by a first hand-tightening screw (2114). The arc-shaped support plate (2111) and the two arc-shaped cover plates (2112) form an annular outer sleeve (211). The inner liner (212) includes multiple airbags (2121), which are fixedly connected to the inner walls of the arc-shaped support plate (2111) and the arc-shaped cover plate (2112), and the multiple airbags (2121) are arranged in a ring array around the central axis of the ring outer sleeve (211). An air tube (2122) is fixedly connected between two adjacent airbags (2121), and an inflation nozzle (2123) is fixedly connected to one side of one of the airbags (2121).

4. The knee joint sports injury assistive rehabilitation device according to claim 3, characterized in that, The exercise auxiliary component is a counterweight mechanism (3), which consists of multiple counterweight blocks (31). The counterweight blocks (31) are fitted on the top of the mounting plate (1). The tops of two counterweight blocks (31) that are far apart from each other are threaded with third hand-tightening screws (32). The counterweight blocks (31) are fixedly connected to the mounting plate (1) by the third hand-tightening screws (32).

5. The knee joint sports injury assistive rehabilitation device according to claim 2, characterized in that, The leg-binding mechanism (2) also includes a third fixing sleeve (24), which is located on the side of the first fixing sleeve (21) away from the second fixing sleeve (22). Plate sleeves (25) are fixedly connected to both sides of the first fixing sleeve (21), the second fixing sleeve (22) and the fixing seat (23). A second hand-tightening screw (26) is threaded onto the plate sleeve (25). A connecting plate (27) is connected through the three adjacent plate sleeves (25) on the left and right. The plate sleeves (25) are fixedly connected to the connecting plate (27) by the second hand-tightening screw (26).

6. The knee joint sports injury assistive rehabilitation device according to claim 5, characterized in that, The exercise aid is a pressure application mechanism (4), which consists of a foot support (41), a drive assembly (42), an emergency assembly (43), and a detection module. The foot support (41) includes a base (411), which is sleeved on the top of the mounting plate (1). A fixing plate (412) is fixedly connected to the top of the base (411). A pedal (413) is provided on the side of the fixing plate (412) near the leg binding mechanism (2). Limiting pins (414) are fixedly connected at the four corners of the pedal (413). The limiting pins (414) penetrate the fixing plate (412). Two first reinforcing plates (415) are fixedly connected between the side of the fixing plate (412) away from the pedal (413) and the base (411). A (416) is opened on the top of the base (411). The drive assembly (42) includes a U-shaped plate (421), which is located at the angle between the fixed plate (412) away from the pedal (413) and the base (411). Two second reinforcing plates (422) are fixedly connected to the bottom angle of the inner side of the U-shaped plate (421). A motor (425) is fixedly connected to the bottom inside the U-shaped plate (421). A drive gear (426) is fixedly connected to the output shaft of the motor (425). 21) A first opening (423) is provided at the bottom. A transmission gear (424) is movably connected inside the first opening (423) via a rotating shaft. The transmission gear (424) is meshed and connected to the drive gear (426) below. The (416) is located directly below the first opening (423). The transmission gear (424) passes through the (416). A rack (12) is inlaid on the top of the mounting plate (1). The transmission gear (424) is meshed and connected to the rack (12). The emergency component (43) includes an electric push rod (431), which is fixedly connected to the side of the fixed plate (412) away from the pedal (413). The piston rod end of the pedal (413) is fixedly connected to the top of the U-shaped plate (421). A first rope post (433) is fixedly connected to the top of the base (411). The first rope post (433) is located on the side of the drive component (42) away from the fixed plate (412). A second rope post (434) is inserted into the top of the mounting plate (1). An elastic rope (435) is fixedly connected between the first rope post (433) and the second rope post (434). Two sliding sleeves (432) are fixedly connected to the side of the fixed plate (412) near the drive component (42). The U-shaped plate (421) is slidably connected to the fixed plate (412) through the sliding sleeves (432). The detection module includes an electrical control box (44), a display (45), and a pressure sensor (46). The electrical control box (44) is fixedly connected to the side of the fixed plate (412) away from the pedal (413) and is located above the electric push rod (431). The display (45) is fixedly connected to the edge of the fixed plate (412) by bolts. The pressure sensor (46) is fixedly connected to the side of the fixed plate (412) near the pedal (413) and is located at the center between the fixed plate (412) and the pedal (413).

7. The knee joint sports injury assistive rehabilitation device according to claim 6, characterized in that, A support base (5) is movably connected below the mounting plate (1). The support base (5) includes a floor (51). Two first telescopic rods (52) are fixedly connected to the top of the floor (51) near the leg binding mechanism (2). The top of the first telescopic rod (52) is movably connected to the adjacent raised block (11) through a hinge. A second telescopic rod (53) is movably connected to the top of the floor (51) near the exercise auxiliary component through a hinge. The top of the second telescopic rod (53) is movably connected to the adjacent raised block (11) through a hinge.

Images