Knee joint rehabilitation training device and using method

Abstract

The invention belongs to the technical field of medical instruments, and discloses a knee joint rehabilitation training device and a use method.The knee joint rehabilitation training device comprises a fixed base, a first rectangular groove is formed in the upper outer surface of the fixed base, and a sliding block is slidably mounted on the inner side of the first rectangular groove; the inner side of the sliding block is sleeved with a lead screw in a threaded mode, and the lead screw penetrates through the interior of the sliding block and penetrates out of the fixed base. A patient puts two legs on a supporting mechanism, then the supporting mechanism is used for carrying out auxiliary training on knee joints, then a rotating block is rotated, a lead screw is driven to rotate when the rotating block rotates, and a sliding block is driven to slide in a first rectangular groove when the lead screw rotates; compared with a traditional device, the device can be started through auxiliary training of the supporting mechanism, dependence on the supporting mechanism is gradually reduced, the strength of muscles around the knee joint, the motion range of the joint and the body feeling are enhanced, more comprehensive rehabilitation is achieved, and meanwhile the position of the arc-shaped plate can be adjusted in a personalized mode.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and specifically relates to a knee joint rehabilitation trainer and a using method thereof. Background Technique

[0002] The knee joint is composed of the lower end of the femur, the upper end of the tibia and the patella. As the largest and most complex joint in the human body, it bears a huge load and amount of movement, and is the key hub for lower limb activities. It belongs to a trochlear joint. However, precisely because of this, the injury rate of the knee joint ranks first among all joints. Among them, osteoarthritis is relatively common. This is a chronic joint disease characterized by degeneration, wear of articular cartilage and bone hyperplasia. Long-term and increasing joint load is the main external pathogenic factor. In addition, diseases such as knee joint cartilage wear, meniscus injury, tibial plateau fracture and ischemic necrosis of the tibial tubercle are also quite common, all of which are related to joint load. During the recovery process of knee surgery, appropriate rehabilitation training is required, mainly including bending exercises and straightening exercises of the knee joint. As the recovery stage progresses, the training intensity is gradually increased to improve the training effect, shorten the recovery time, and help the patient recover quickly.

[0003] Existing rehabilitation training devices have obvious shortcomings. Most of the device functions are designed relatively simply, only focusing on prompting the patient to bend the knee joint, completely ignoring the adaptation needs of the patient in the initial stage after surgery. The patient has just come out of the surgical trauma, and the physical function is weak and needs a buffer adaptation stage. Ideally, appropriate external force should be used to assist the patient to gradually adapt to the rehabilitation rhythm first. After the body has a certain bearing capacity, then the patient can independently perform knee joint training. Only in this way can the multiple training purposes be achieved step by step. However, the current situation is that the patient has to perform knee joint rehabilitation training by himself at the beginning, which not only increases physical consumption, but also greatly reduces the training effect and prolongs the rehabilitation period. Summary of the Invention

[0004] The purpose of the present invention is to provide a knee joint rehabilitation trainer and a using method thereof to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present invention provides the following technical solution: A knee joint rehabilitation trainer and its usage method, including a fixed base. The upper outer surface of the fixed base is provided with a first rectangular groove. A sliding block is slidably installed inside the first rectangular groove. A lead screw is threadedly sleeved inside the sliding block and the lead screw penetrates through the interior of the sliding block and out of the fixed base. A rotating block is fixedly installed at the end of the lead screw. The top of the sliding block is fixedly installed with an arc-shaped plate. The outer surface of the arc-shaped plate is provided with two groups of arc-shaped grooves and the number of each group of arc-shaped grooves is two. Arc-shaped sliding grooves are opened on both sides of the arc-shaped groove. Arc-shaped sliders are slidably installed inside the arc-shaped sliding grooves and the arc-shaped sliders are located inside the two arc-shaped sliding grooves. A fixed block is fixedly installed on the outer surface of the arc-shaped slider and the fixed block does not contact the arc-shaped groove. A roller is rotatably installed between the two fixed blocks. A pedal is fixedly installed on the outer surface of the fixed block. First installation grooves are opened on the front and rear sides of the outer surface of the fixed base. Second installation grooves are opened on the front and rear sides of the outer surface of the fixed base and are located between the first rectangular groove and the first installation groove. A support mechanism is fixedly connected between the two first installation grooves. A reclining chair is fixedly installed on the left side of the fixed base.

[0006] Preferably, the support mechanism includes a fixed rod fixedly connected between the two first installation grooves. First auxiliary rods are movably installed on the front and rear sides of the outer surface of the fixed rod and are respectively located inside the two first installation grooves. Second rectangular grooves are opened on the front and rear sides of the outer surface on the left side of the fixed base. Rectangular convex blocks are fixedly installed inside the second rectangular grooves. A first sliding groove is opened on the side of the second installation groove and extends to the inside of the second rectangular groove. A third rectangular groove is opened inside the fixed base and is located on the sides of the two second installation grooves. A first sliding rod is slidably installed between the two first sliding grooves and the first sliding rod extends to the inside of the second rectangular groove. Second auxiliary rods are movably sleeved on the outer surface of the first sliding rod and are respectively located inside the two second installation grooves. Connecting blocks are fixedly installed at the ends of the first sliding rod. A reciprocating rod is slidably installed inside the rectangular convex block and both ends of the reciprocating rod penetrate through one end of the side of the rectangular convex block and are fixedly connected to the side of the connecting block. An annular sleeve block is fixedly sleeved on the outer surface of the reciprocating rod and is located between the connecting block and the rectangular convex block. A spring is movably sleeved on the outer surface of the reciprocating rod and one end of the spring is fixedly connected to the inside of the rectangular convex block and the other side is fixedly connected to the side of the annular sleeve block. A first armrest is fixedly installed at the end of the reciprocating rod. A support rod is rotatably connected between the two first auxiliary rods and both ends of the support rod penetrate through the two first auxiliary rods and the second auxiliary rods on both sides.

[0007] Preferably, a lifting rod is fixedly installed on the top of the fixed base, and the lifting rod is fixedly installed around the top of the fixed base. A lifting plate is fixedly installed on the top of the lifting rod. Fourth rectangular grooves are formed on the front and rear sides of the top of the lifting plate. A third chute is formed on the front of the lifting plate and longitudinally penetrates the lifting plate. Second sliding rods are movably installed on the left and right sides inside the third chute. Second handrails are fixedly installed at the ends of the second sliding rods. Flexible sleeve blocks are fixedly sleeved on the outer surfaces of the second sliding rods, and the flexible sleeve blocks are located inside the two fourth rectangular grooves formed.

[0008] Preferably, a second chute is formed inside the third rectangular groove. A rectangular slider is slidably installed inside the second chute, and the first sliding rod penetrates inside the rectangular slider.

[0009] Preferably, a support rod is rotatably connected between the two first auxiliary rods. An arc-shaped rubber pad is fixedly installed on the outer surface of the support rod and is distributed on the outer surface of the support rod in a linear array.

[0010] Preferably, anti-slip bumps are fixedly installed on the bottom of the fixed base, and the anti-slip bumps are fixedly installed on both sides of the bottom of the fixed base.

[0011] Preferably, a reclining chair is fixedly installed on the left side of the fixed base, and a flexible pad is fixedly installed on the outer surface of the reclining chair.

[0012] Preferably, the specific usage steps of this method are as follows: S1: First, let the patient sit on the reclining chair, then place the legs on the support mechanism. First, use the support mechanism to assist in training the knee joint, and then rotate the rotating block. When the rotating block rotates, it will drive the lead screw to rotate. When the lead screw rotates, it will drive the sliding block to slide in the first rectangular groove. When the sliding block slides, it will drive the arc-shaped plate to move. Then, place the feet in the pedal. When the feet move up and down, it will drive the fixed blocks on both sides to move through the roller. When the two fixed blocks move, it will drive the arc-shaped slider at the bottom to slide in the arc-shaped chutes formed on both sides. And because the pedal is fixedly installed on the outer surface of the roller and the roller is rotatably installed between the two fixed blocks, the pedal can swing according to the radian of the arc-shaped groove.

[0013] S2: Then, when pulling the first chutes on both sides outward with both hands, the reciprocating rods on both sides will be driven to slide outward inside the rectangular bumps. When the reciprocating rods slide outward, the connecting blocks will be driven to move outward. When the connecting blocks move outward, the first sliding rods will be driven to move. When the first sliding rods move, the second auxiliary rods on both sides will be driven to contract inward. When the second auxiliary rods on both sides contract inward, the first auxiliary rods on both sides will be driven to move upward through the support rods, and at the same time, the support rods will also move upward. At the same time, the annular sleeve blocks will squeeze the springs, causing the springs to undergo elastic deformation. When the outward pulling force of the first armrest by the patient disappears, due to the restoring force of the springs, the annular sleeve blocks will drive the reciprocating rods to return to their original positions, thereby causing the connecting blocks to drive the first sliding rods to return to their original positions, and then the support rods will be driven to return to their original positions. The patient manually pulls and relaxes the first armrest to perform reciprocating exercises to train the knees.

[0014] S3: The staff moves the second armrests on both sides by an external force to drive the second sliding rods to adjust to appropriate positions. When the second sliding rods move to appropriate positions, the flexible sleeve blocks located inside the fourth rectangular grooves on both sides will be driven to move to appropriate positions at the same time, and the fourth rectangular grooves correspond to the first installation groove and the second installation groove. Then, the lifting rods are adjusted to appropriate positions to exert appropriate downward pressure on the patient's legs to recover the knee joint.

[0015] S4: When the first sliding rod moves, it will drive the rectangular slider to slide in the second chute. Then, the first sliding rod passes through the inside of the rectangular slider, effectively ensuring the stability of the first sliding rod when it moves.

[0016] The beneficial effects of the present invention are as follows: 1. In the present invention, the patient places both legs on the support mechanism, and then first uses the support mechanism to assist in training the knee joint. Then, the rotating block is rotated. When the rotating block rotates, the lead screw will be driven to rotate. When the lead screw rotates, the sliding block will be driven to slide in the first rectangular groove. When the sliding block slides, the arc-shaped plate will be driven to move. Then, by placing the feet in the pedals, when the feet move up and down, the fixed blocks on both sides will be driven to move through the rollers. When the two fixed blocks move, the arc-shaped slider at the bottom will be driven to slide in the arc-shaped chutes opened on both sides, providing stable support for the sliding of the arc-shaped slider. And since the pedal is fixedly installed on the outer surface of the roller and the roller is rotatably installed between the two fixed blocks, the pedal can swing according to the radian of the arc-shaped groove. Compared with traditional devices, this device can start with the auxiliary training of the support mechanism, gradually reduce the dependence on the support mechanism, enhance the muscle strength, joint mobility, and proprioception around the knee joint, achieve more comprehensive rehabilitation, and at the same time, the position of the arc-shaped plate can be adjusted personalized to facilitate adaptation to different users.

[0017] 2. When the two hands pull the first chutes on both sides outward, the reciprocating rods on both sides will be driven to slide outward inside the rectangular bumps. When the reciprocating rods slide outward, the connecting blocks will be driven to move outward. When the connecting blocks move outward, the first sliding rods will be driven to move. When the first sliding rods move, the second auxiliary rods on both sides will be driven to contract inward. When the second auxiliary rods on both sides contract inward, the first auxiliary rods on both sides will be driven to move upward through the support rods, and at the same time, the support rods will also move upward. At the same time, the annular sleeve blocks will squeeze the springs, causing the springs to undergo elastic deformation. When the patient's outward pulling force on the first armrest disappears, due to the restoring force of the springs, the annular sleeve blocks will drive the reciprocating rods to return to their original positions, thereby causing the connecting blocks to drive the first sliding rods to return to their original positions, and then the support rods will be driven to return to their original positions. The patient can train the knees by manually pulling and relaxing, and compared with traditional devices, this device can provide additional stable support for the knee joint during training, reduce the pressure borne by the joint during movement, and prevent secondary injuries caused by instability. It is especially suitable for patients with ligament injuries or after joint replacement, which helps to protect the repaired tissues and promote healing.

[0018] 3. The staff of the present invention moves the second armrests on both sides by an external force to drive the second sliding rods to adjust to appropriate positions. When the second sliding rods move to appropriate positions, the flexible sleeve blocks located inside the fourth rectangular grooves on both sides will be simultaneously driven to move to appropriate positions, and the fourth rectangular grooves correspond to the first installation groove and the second installation groove. Then, the lifting rods are lifted to an appropriate position to apply an appropriate downward pressure on the patient's legs to restore the knee joint. Compared with traditional devices, this device can help the patient perform flexion and extension movements of the knee joint more effectively. By applying an appropriate external force, the flexion and extension angle of the knee joint can be gradually increased, and the range of joint movement can be expanded, which helps to improve joint stiffness and limited mobility caused by injuries or long-term immobilization. Moreover, the flexible material of the flexible sleeve blocks can also reduce the pressure on the patient's legs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front three-dimensional external structure schematic diagram of the present invention; Figure 2 is a schematic diagram of the support rod structure of the present invention; Figure 3 is a schematic diagram of the spring structure of the present invention; Figure 4 is a schematic diagram of the arc-shaped plate structure of the present invention; Figure 5 is a schematic diagram of the fixed base structure of the present invention; Figure 6 is of the present invention Figure 5 the enlarged structure schematic diagram at A in; Figure 7 is a schematic diagram of the lifting plate structure of the present invention.

[0020] In the figure: 1. Fixed base; 2. First rectangular groove; 3. Lead screw; 4. Slide block; 5. Rotating block; 6. Arc plate; 7. Arc groove; 8. Arc sliding groove; 9. Arc sliding block; 10. Fixed block; 11. Roller; 12. Pedal; 13. Second rectangular groove; 14. Rectangular convex block; 15. Reciprocating rod; 16. Spring; 17. Ring-shaped sleeve block; 18. First installation groove; 19. Second installation groove; 20. First sliding groove; 21. First auxiliary rod; 22. Fixed rod; 23. First sliding rod; 24. Second auxiliary rod; 25. Connecting block; 26. Support rod; 27. Third rectangular groove; 28. Second sliding groove; 29. Rectangular sliding block; 30. First armrest; 31. Lifting rod; 32. Lifting plate; 33. Fourth rectangular groove; 34. Third sliding groove; 35. Second sliding rod; 36. Flexible sleeve block; 37. Second armrest; 38. Reclining chair; 39. Anti-slip convex block. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] As Figures 1 to 7 shown, the embodiment of the present invention provides a knee joint rehabilitation trainer and a use method, including a fixed base 1. The outer upper surface of the fixed base 1 is provided with a first rectangular groove 2. A slide block 4 is slidably installed inside the first rectangular groove 2. A lead screw 3 is threadedly sleeved inside the slide block 4 and the lead screw 3 penetrates through the inside of the slide block 4 and penetrates out of the fixed base 1. A rotating block 5 is fixedly installed at the end of the lead screw 3. The top of the slide block 4 is fixedly installed with an arc plate 6. Two groups of arc grooves 7 are provided on the outer surface of the arc plate 6 and the number of each group of arc grooves 7 is two. Arc sliding grooves 8 are provided on both sides of the arc groove 7. An arc sliding block 9 is slidably installed inside the arc sliding groove 8 and the arc sliding block 9 is located inside the two arc sliding grooves 8. A fixed block 10 is fixedly installed on the outer surface of the arc sliding block 9 and the fixed block 10 does not contact the arc groove 7. A roller 11 is rotatably installed between the two fixed blocks 10. A pedal 12 is fixedly installed on the outer surface of the fixed block 10. First installation grooves 18 are provided on the front and rear sides of the outer surface of the fixed base 1. Second installation grooves 19 are provided on the front and rear sides of the outer surface of the fixed base 1 and are located between the first rectangular groove 2 and the first installation groove 18. A support mechanism is fixedly connected between the two first installation grooves 18. A reclining chair 38 is fixedly installed on the left side of the fixed base 1.

[0023] When the patient needs to perform rehabilitation training, first sit on the reclining chair 38, then place the legs on the support mechanism, and first use the support mechanism to assist in training the knee joint. Then rotate the rotating block 5. When the rotating block 5 rotates, it will drive the screw rod 3 to rotate. When the screw rod 3 rotates, it will drive the sliding block 4 to slide in the first rectangular groove 2. When the sliding block 4 slides, it will drive the arc-shaped plate 6 to move. After that, place the feet in the pedal 12. When the feet move up and down, it will drive the fixed blocks 10 on both sides to move through the roller 11. When the two fixed blocks 10 move, they will drive the arc-shaped slider 9 at the bottom to slide in the arc-shaped chutes 8 opened on both sides, providing stable support for the sliding of the arc-shaped slider 9. And because the pedal 12 is fixedly installed on the outer surface of the roller 11 and the roller 11 is rotatably installed between the two fixed blocks 10, the pedal 12 can swing according to the radian of the arc groove 7.

[0024] By placing the patient's legs on the support mechanism, first using the support mechanism to assist in training the knee joint, then rotating the rotating block 5. When the rotating block 5 rotates, it will drive the screw rod 3 to rotate. When the screw rod 3 rotates, it will drive the sliding block 4 to slide in the first rectangular groove 2. When the sliding block 4 slides, it will drive the arc-shaped plate 6 to move. After that, place the feet in the pedal 12. When the feet move up and down, it will drive the fixed blocks 10 on both sides to move through the roller 11. When the two fixed blocks 10 move, they will drive the arc-shaped slider 9 at the bottom to slide in the arc-shaped chutes 8 opened on both sides, providing stable support for the sliding of the arc-shaped slider 9. And because the pedal 12 is fixedly installed on the outer surface of the roller 11 and the roller 11 is rotatably installed between the two fixed blocks 10, the pedal 12 can swing according to the radian of the arc groove 7. Compared with the traditional device, this device can start with the assisted training of the support mechanism, gradually reduce the dependence on the support mechanism, enhance the muscle strength, joint mobility and proprioception around the knee joint, achieve more comprehensive rehabilitation, and at the same time can adjust the position of the arc-shaped plate personalized to facilitate adapting to different users.

[0025] Among them, the support mechanism includes a fixing rod 22 fixedly connected between two first mounting grooves 18. On the front and rear sides of the outer surface of the fixing rod 22, first auxiliary rods 21 are movably installed and are respectively located in the first mounting grooves 18 on both sides. On the front and rear sides of the outer surface of the left side of the fixing base 1, second rectangular grooves 13 are opened. On the inner sides of the second rectangular grooves 13, rectangular protrusions 14 are fixedly installed. On the side of the second mounting groove 19, a first sliding groove 20 is opened and extends to the inner side of the second rectangular groove 13. Inside the fixing base 1, a third rectangular groove 27 is opened and is located on the sides of the two second mounting grooves 19. A first sliding rod 23 is slidably installed between the two first sliding grooves 20 and the first sliding rod 23 extends to the inner side of the second rectangular groove 13. A second auxiliary rod 24 is movably sleeved on the outer surface of the first sliding rod 23 and is respectively located in the second mounting grooves 19 on both sides. Connecting blocks 25 are fixedly installed at the ends of the first sliding rod 23. A reciprocating rod 15 is slidably installed inside the rectangular protrusion 14 and both ends of the reciprocating rod 15 penetrate through one end of the side of the rectangular protrusion 14 and are fixedly connected to the side of the connecting block 25. An annular sleeve block 17 is fixedly sleeved on the outer surface of the reciprocating rod 15 and is located between the connecting block 25 and the rectangular protrusion 14. A spring 16 is movably sleeved on the outer surface of the reciprocating rod 15 and one end of the spring 16 is fixedly connected to the inner side of the rectangular protrusion 14 and the other side is fixedly connected to the side of the annular sleeve block 17. A first handrail 30 is fixedly installed at the end of the reciprocating rod 15. A support rod 26 is rotatably connected between the two first auxiliary rods 21 and both ends of the support rod 26 penetrate through the first auxiliary rods 21 and the second auxiliary rods 24 on both sides.

[0026] When the patient pulls the two first sliding grooves 20 outward with both hands, it will drive the reciprocating rods 15 on both sides to slide outward inside the rectangular protrusions 14. When the reciprocating rod 15 slides outward, it will drive the connecting block 25 to move outward. When the connecting block 25 moves outward, it will drive the first sliding rod 23 to move. When the first sliding rod 23 moves, it will drive the second auxiliary rods 24 on both sides to contract inward. When the second auxiliary rods 24 on both sides contract inward, it will drive the first auxiliary rods 21 on both sides to move upward through the support rod 26. At the same time, the support rod 26 also moves upward. At the same time, the annular sleeve block 17 will squeeze the spring 16 to cause elastic deformation of the spring 16. When the outward pulling force of the first handrail 30 by the patient disappears, due to the elastic force recovery of the spring 16, the annular sleeve block 17 drives the reciprocating rod 15 to return to its original position, thereby driving the connecting block 25 to drive the first sliding rod 23 to return to its original position, and then it will drive the support rod 26 to return to its original position. The patient manually pulls and relaxes the first handrail 30 to reciprocate and train the knee.

[0027] When pulling the first sliding grooves 20 on both sides outward with both hands, the reciprocating rods 15 on both sides will be driven to slide outward inside the rectangular bumps 14. When the reciprocating rods 15 slide outward, they will drive the connecting blocks 25 to move outward. When the connecting blocks 25 move outward, they will drive the first sliding rods 23 to move. When the first sliding rods 23 move, they will drive the second auxiliary rods 24 on both sides to contract inward. When the second auxiliary rods 24 on both sides contract inward, they will drive the first auxiliary rods 21 on both sides to move upward through the support rods 26. At the same time, the support rods 26 also move upward. At the same time, the annular sleeve block 17 will squeeze the spring 16 to cause elastic deformation of the spring 16. When the outward pulling force of the first armrest 30 by the patient disappears, due to the elastic recovery of the spring 16, the annular sleeve block 17 drives the reciprocating rod 15 to return to its original position, thereby causing the connecting block 25 to drive the first sliding rod 23 to return to its original position, and then will drive the support rod 26 to return to its original position. The patient manually pulls and relaxes to reciprocate to train the knee. Compared with the traditional device, this device can provide additional stable support for the knee joint during training, reduce the pressure borne by the joint during movement, and prevent secondary injuries caused by instability. It is especially suitable for patients with ligament injuries or after joint replacement, which helps to protect the repaired tissue and promote healing.

[0028] Among them, a lifting rod 31 is fixedly installed on the top of the fixed base 1 and the lifting rod 31 is fixedly installed around the top of the fixed base 1. The top of the lifting rod 31 is fixedly installed with a lifting plate 32. The front and rear sides of the top of the lifting plate 32 are provided with fourth rectangular grooves 33. The front of the lifting plate 32 is provided with a third sliding groove 34 which longitudinally penetrates the lifting plate 32. The left and right sides inside the third sliding groove 34 are movably installed with second sliding rods 35. The ends of the second sliding rods 35 are fixedly installed with second armrests 37. The outer surfaces of the second sliding rods 35 are fixedly sleeved with flexible sleeve blocks 36 and the flexible sleeve blocks 36 are located inside the two opened fourth rectangular grooves 33.

[0029] When assisting the patient to press the leg, first, the staff moves the second armrests 37 on both sides by an external force to drive the second sliding rods 35 to adjust to a suitable position. When the second sliding rods 35 move to a suitable position, the flexible sleeve blocks 36 located inside the fourth rectangular grooves 33 on both sides will be moved to a suitable position at the same time, and the fourth rectangular grooves 33 correspond to the first installation groove 18 and the second installation groove 19. Then, the lifting rod 31 is lifted to a suitable position to press the patient's leg appropriately to recover the knee joint.

[0030] By the staff moving the second armrests 37 on both sides through external force to drive the second sliding rod 35 to adjust to a suitable position, when the second sliding rod 35 moves to a suitable position, it will simultaneously make the flexible sleeve blocks 36 located inside the fourth rectangular grooves 33 on both sides move to a suitable position, and the fourth rectangular grooves 33 correspond to the first installation groove 18 and the second installation groove 19, and then make the lifting rod 31 lift to a suitable position to press the patient's legs appropriately to recover the knee joint. Compared with the traditional device, this device can help the patient perform flexion and extension movements of the knee joint more effectively. By applying appropriate external force, the flexion and extension angle of the knee joint can be gradually increased, the range of joint movement can be expanded, which helps to improve the joint stiffness and limited movement caused by injury or long-term immobilization. Moreover, the flexible sleeve block 36 is made of flexible material, which can also reduce the compression on the patient's leg.

[0031] Wherein, a second sliding groove 28 is opened inside the third rectangular groove 27, a rectangular sliding block 29 is slidably installed inside the second sliding groove 28, and the first sliding rod 23 penetrates through the inside of the rectangular sliding block 29.

[0032] When the first sliding rod 23 moves, it will drive the rectangular sliding block 29 to slide in the second sliding groove 28, and since the first sliding rod 23 penetrates through the inside of the rectangular sliding block 29, it effectively makes the first sliding rod 23 keep stable when moving, avoiding damage to the device caused by excessive vibration.

[0033] Wherein, a support rod 26 is rotatably connected between the two first auxiliary rods 21, and an arc-shaped rubber pad is fixedly installed on the outer surface of the support rod 26 and is arranged in a linear array on the outer surface of the support rod 26.

[0034] By fixedly installing an arc-shaped rubber pad on the outer surface of the support rod 26 and arranging it in a linear array on the outer surface of the support rod 26, it can effectively protect the knee joint part of the patient.

[0035] Wherein, anti-slip bumps 39 are fixedly installed at the bottom of the fixed base 1, and the anti-slip bumps 39 are fixedly installed on both sides of the bottom of the fixed base 1.

[0036] By fixedly installing the anti-slip bumps 39 on both sides of the bottom of the fixed base 1, it can effectively keep the whole device stable and avoid the device being easily affected by the external physical influence.

[0037] Wherein, a reclining chair 38 is fixedly installed on the left side of the fixed base 1, and a flexible pad is fixedly installed on the outer surface of the reclining chair 38.

[0038] By fixedly installing a flexible pad on the outer surface of the reclining chair 38, it can effectively improve the comfort for the patient during rehabilitation training and increase the enthusiasm of the patient for rehabilitation.

[0039] Wherein, the specific usage steps of this method are as follows: S1: First, let the patient sit on the reclining chair 38, then place the legs on the support mechanism. First, use the support mechanism to assist in training the knee joint, and then rotate the rotating block 5. When the rotating block 5 rotates, it will drive the lead screw 3 to rotate. When the lead screw 3 rotates, it will drive the sliding block 4 to slide in the first rectangular groove 2. When the sliding block 4 slides, it will drive the arc-shaped plate 6 to move. Then, place the feet in the pedal 12. When the feet move up and down, it will drive the fixed blocks 10 on both sides to move through the roller 11. When the two fixed blocks 10 move, they will drive the arc-shaped slider 9 at the bottom to slide in the arc-shaped chutes 8 opened on both sides. And because the pedal 12 is fixedly installed on the outer surface of the roller 11 and the roller 11 is rotatably installed between the two fixed blocks 10, the pedal 12 can swing according to the radian of the arc groove 7.

[0040] S2: Then, when pulling the first chutes 20 on both sides outward with both hands, it will drive the reciprocating rods 15 on both sides to slide outward inside the rectangular protrusions 14. When the reciprocating rods 15 slide outward, it will drive the connecting block 25 to move outward. When the connecting block 25 moves outward, it will drive the first slide rod 23 to move. When the first slide rod 23 moves, it will drive the second auxiliary rods 24 on both sides to contract inward. When the second auxiliary rods 24 on both sides contract inward, they will drive the first auxiliary rods 21 on both sides to move upward through the support rod 26. At the same time, the support rod 26 also moves upward. At the same time, the annular sleeve block 17 will squeeze the spring 16 to make the spring 16 undergo elastic deformation. When the outward pulling force of the patient on the first armrest 30 disappears, due to the elastic recovery of the spring 16, the annular sleeve block 17 drives the reciprocating rod 15 to return to its original position, thereby making the connecting block 25 drive the first slide rod 23 to return to its original position, and then it will drive the support rod 26 to return to its original position. The patient trains the knee by manually pulling and relaxing the first armrest 30 in a reciprocating manner.

[0041] S3: The staff moves the second armrests 37 on both sides by an external force to drive the second slide rods 35 to adjust to a suitable position. When the second slide rods 35 move to a suitable position, it will simultaneously make the flexible sleeve blocks 36 located inside the fourth rectangular grooves 33 on both sides move to a suitable position. And the fourth rectangular grooves 33 correspond to the first installation groove 18 and the second installation groove 19. Then, adjust the lifting rod 31 to a suitable position to apply a suitable downward pressure on the patient's legs to recover the knee joint.

[0042] S4: When the first slide rod 23 moves, it will drive the rectangular slider 29 to slide in the second chute 28. Then, the first slide rod 23 passes through the inside of the rectangular slider 29, thus effectively keeping the first slide rod 23 stable when it moves.

[0043] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A knee joint rehabilitation training device, comprising a fixed base (1), characterized in that: The upper outer surface of the fixed base (1) is provided with a first rectangular groove (2), a sliding block (4) is slidably mounted on the inner side of the first rectangular groove (2), a screw rod (3) is threadedly sleeved on the inner side of the sliding block (4), and the screw rod (3) passes through the interior of the sliding block (4) and passes through the fixed base (1), a rotating block (5) is fixedly mounted on the end of the screw rod (3), an arc plate (6) is fixedly mounted on the top of the sliding block (4), two groups of arc grooves (7) are provided on the outer surface of the arc plate (6), and each group of arc grooves (7) has two arc grooves, and both sides of the arc groove (7) are provided with arc slide grooves (8), and an arc slide block (9) is slidably mounted on the inner side of the arc slide groove (8), and the arc slide block (9) is fixedly mounted on the inner side of the arc slide groove (8). ) is located inside the two arc-shaped slide grooves (8), a fixed block (10) is fixedly installed on the outer surface of the arc-shaped slide block (9) and the fixed block (10) does not contact the arc-shaped groove (7), a roller (11) is rotatably installed between the two fixed blocks (10), a pedal (12) is fixedly installed on the outer surface of the fixed block (10), a first installation groove (18) is opened on the front and rear sides of the outer surface of the fixed base (1), a second installation groove (19) is opened on the front and rear sides of the outer surface of the fixed base (1) and is located between the first rectangular groove (2) and the first installation groove (18), a support mechanism is fixedly connected between the two first installation grooves (18), and a backrest (38) is fixedly installed on the left side of the fixed base (1).

2. A knee joint rehabilitation training device according to claim 1, characterized in that: The support mechanism comprises two first mounting grooves (18) between which a fixing rod (22) is fixedly connected; first auxiliary rods (21) are movably mounted on the front and rear sides of the outer surface of the fixing rod (22) and are respectively located in the first mounting grooves (18) on both sides; second rectangular grooves (13) are opened on the front and rear sides of the left outer surface of the fixing base (1); rectangular protrusions (14) are fixedly mounted on the inner sides of the second rectangular grooves (13); a first sliding groove (20) is opened on the side of the second mounting groove (19) and extends to the inner side of the second rectangular groove (13); a third rectangular groove (27) is opened on the inner side of the fixing base (1) and is located on the side of the two second mounting grooves (19); a first sliding rod (23) is slidably mounted between the two first sliding grooves (20) and the first sliding rod (23) extends to the inner side of the second rectangular groove (13); and a second auxiliary rod (24) is movably sleeved on the outer surface of the first sliding rod (23). and are respectively located in the second installation grooves (19) on both sides. The ends of the first sliding rod (23) are fixedly installed with connecting blocks (25). A reciprocating rod (15) is slidably installed inside the rectangular protrusion (14). Both ends of the reciprocating rod (15) pass through one end of the rectangular protrusion (14) and are fixedly connected to the side of the connecting block (25). The outer surface of the reciprocating rod (15) is fixedly sleeved with an annular sleeve block (17) and is located between the connecting block (25) and the rectangular protrusion (14). The outer surface of the reciprocating rod (15) is movably sleeved with a spring (16). One end of the spring (16) is fixedly connected to the inner side of the rectangular protrusion (14) and the other end is fixedly connected to the side of the annular sleeve block (17). The end of the reciprocating rod (15) is fixedly installed with a first handrail (30). A support rod (26) is rotatably connected between the two first auxiliary rods (21). Both ends of the support rod (26) pass through the first auxiliary rod (21) and the second auxiliary rod (24) on both sides.

3. A knee joint rehabilitation training device according to claim 1, characterized in that: A lifting rod (31) is fixedly mounted on the top of the fixed base (1), and the lifting rod (31) is fixedly mounted around the top of the fixed base (1); a lifting plate (32) is fixedly mounted on the top of the lifting rod (31); fourth rectangular grooves (33) are provided on the front and rear sides of the top of the lifting plate (32); a third slide groove (34) is provided on the front side of the lifting plate (32) and penetrates the lifting plate (32) longitudinally; second slide rods (35) are movably mounted on the left and right sides of the third slide groove (34); second handrails (37) are fixedly mounted on the ends of the second slide rods (35); a flexible sleeve block (36) is fixedly sleeved on the outer surface of the second slide rod (35), and the flexible sleeve block (36) is located inside the two fourth rectangular grooves (33) provided.

4. A knee joint rehabilitation training device according to claim 2, characterized in that: A second slide groove (28) is provided on the inner side of the third rectangular groove (27), a rectangular sliding block (29) is slidably mounted on the inner side of the second slide groove (28), and the first sliding rod (23) passes through the inside of the rectangular sliding block (29).

5. A knee joint rehabilitation training device according to claim 2, characterized in that: A support rod (26) is rotatably connected between the two first auxiliary rods (21), and an arc-shaped rubber pad is fixedly mounted on the outer surface of the support rod (26) and covers the outer surface of the support rod (26) in a linear array.

6. A knee joint rehabilitation training device according to claim 1, characterized in that: The bottom of the fixed base (1) is fixedly mounted with anti-skid bumps (39), and the anti-skid bumps (39) are fixedly mounted on both sides of the bottom of the fixed base (1).

7. A knee joint rehabilitation training device according to claim 1, characterized in that: A backrest (38) is fixedly mounted on the left side of the fixed base (1), and a flexible pad is fixedly mounted on the outer surface of the backrest (38).

8. A method for using a knee joint rehabilitation training device according to claims 1-7, characterized in that: The specific steps of using this method are as follows: S1: First, the patient sits on the recliner (38), and then places both legs on the support mechanism. Then, the support mechanism is used to perform auxiliary training on the knee joint. Then, the rotating block (5) is rotated. When the rotating block (5) rotates, the screw rod (3) is driven to rotate. When the screw rod (3) rotates, the sliding block (4) is driven to slide in the first rectangular groove (2). When the sliding block (4) slides, the arc plate (6) is driven to move. Then, the patient places his feet on the pedal (12). By moving the feet up and down, the fixed blocks (10) on both sides are driven to move through the roller (11). When the two fixed blocks (10) move, the arc-shaped slider (9) on the bottom side is driven to slide in the arc-shaped sliding grooves (8) opened on both sides. Since the pedal (12) is fixedly mounted on the outer surface of the roller (11) and the roller (11) is rotatably mounted between the two fixed blocks (10), the pedal (12) swings according to the curvature of the arc groove (7). S2: Then, by pulling the first slide grooves (20) on both sides outward with both hands, the reciprocating rods (15) on both sides will slide outward inside the rectangular protrusion (14). When the reciprocating rod (15) slides outward, it will drive the connecting block (25) to move outward. When the connecting block (25) moves outward, it will drive the first slide rod (23) to move. When the first slide rod (23) moves, it will drive the second auxiliary rods (24) on both sides to retract inward. When the second auxiliary rods (24) on both sides retract inward, they will drive the first auxiliary rods (21) on both sides to move inward through the support rod (26). The support rod (26) also moves upward, and the annular sleeve (17) squeezes the spring (16) to cause the spring (16) to produce elastic deformation. When the patient causes the outward pulling force of the first armrest (30) to disappear, the elastic force of the spring (16) causes the annular sleeve (17) to drive the reciprocating rod (15) to return to its original position, thereby causing the connecting block (25) to drive the first sliding rod (23) to return to its original position, and then drive the support rod (26) to return to its original position. The patient manually pulls and releases the first armrest (30) to reciprocate to train the knee; S3: The staff moves the second handrails (37) on both sides by external force to drive the second slide bar (35) to adjust to a suitable position. When the second slide bar (35) moves to a suitable position, the flexible sleeve block (36) located inside the fourth rectangular grooves (33) on both sides will be moved to a suitable position at the same time, and the fourth rectangular grooves (33) correspond to the first installation groove (18) and the second installation groove (19). Then, the lifting rod (31) is lifted to a suitable position to appropriately press down the patient's leg to restore the knee joint. S4: When the first slide bar (23) moves, it will drive the rectangular slide block (29) to slide in the second slide groove (28), and then the first slide bar (23) passes through the interior of the rectangular slide block (29), thereby effectively making the first slide bar (23) stable when moving.

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