Novel knee joint rehabilitation device

By designing a motor-driven knee joint rehabilitation device, patients can independently perform passive flexion and extension exercises of the knee joint, solving the problem of requiring manual assistance from medical staff in existing technologies, and achieving the effects of reducing the burden on medical staff and accelerating rehabilitation.

CN223516596UActive Publication Date: 2025-11-07孙健宁
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Patent Information

Application Number
CN202422371893.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-27
Publication Date
2025-11-07
Estimated Expiration
2034-09-27

AI Technical Summary

Technical Problem

Existing knee rehabilitation devices require medical staff to manually assist patients in performing knee flexion and extension exercises during the initial rehabilitation phase, which increases the workload of medical staff and makes it impossible for patients to complete the exercises independently.

Method used

A knee joint rehabilitation device was designed, comprising a base plate, support column, seat cushion, armrests, and motor drive. The device enables passive flexion and extension movements of the lower leg through a motor-driven turntable and rotating plate, allowing patients to train independently. Elastic bands and sponge pads provide stable support and comfortable contact.

Benefits of technology

Patients can perform knee flexion and extension exercises independently, reducing the direct involvement of medical staff, promoting blood circulation and rehabilitation in the knee joint, reducing joint stiffness and adhesions, and improving rehabilitation efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of medical rehabilitation instruments, and discloses a novel knee joint rehabilitation device which comprises a bottom plate, supporting columns are fixedly connected to the periphery of the upper portion of the bottom plate, a cushion is fixedly connected to the tops of the multiple supporting columns, armrests are fixedly connected to the two sides of the exterior of the cushion, and a backrest is installed on the left side of the exterior of the cushion. A mounting block is fixedly connected to the right side of the exterior of the seat cushion, a fixing rod is fixedly connected to the interior of the mounting block, a double-head motor is arranged on the lower portion of the seat cushion, rotating discs are fixedly connected to the output ends of the double-head motor, and one ends of rotating plates are fixedly connected to the exteriors of the two rotating discs. According to the knee joint rehabilitation device, when a patient uses the knee joint rehabilitation device, flexion and extension training of the knee joint can be autonomously completed, manual assistance of medical staff is not needed, direct participation of the medical staff in the rehabilitation process is reduced, and the workload of the medical staff is relieved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to medical rehabilitation equipment technical field especially relates to a novel knee joint rehabilitation device. BACKGROUND

[0002] The knee joint is one of the biggest and most complex joints in the human body, located between the thigh and the lower leg, bearing the weight and movement load required for various daily activities such as walking, running, jumping, and squatting. The knee joint is composed of bone, cartilage, ligament, tendon, and synovial fluid, which work together to maintain the stability, flexibility, and weight-bearing capacity of the knee joint.

[0003] When jumping, running, and body weight-bearing, the knee joint bears a huge pressure and is prone to injury. Therefore, rehabilitation treatment is particularly important after knee joint injury or surgery, and the use of knee joint rehabilitation devices can help patients gradually recover the function of the knee joint and accelerate the recovery process through scientific and safe methods.

[0004] However, the existing knee joint rehabilitation device is similar to a rowing machine, mainly relying on the active participation of patients for training. At the initial stage of rehabilitation, patients often cannot independently complete the flexion and extension training of the knee joint due to postoperative or post-injury pain, joint stiffness, or insufficient muscle strength. At this time, the movement of the knee joint mostly needs manual help from medical personnel, through passive movement of the knee joint to promote blood circulation, reduce joint adhesion, and prevent joint stiffness. This manual help from medical personnel not only increases the workload of medical personnel but also increases the consumption of medical resources. SUMMARY

[0005] To make up for the above shortcomings, the utility model provides a novel knee joint rehabilitation device, aiming to improve the problem that patients at the initial stage of rehabilitation often cannot independently complete the flexion and extension training of the knee joint due to postoperative or post-injury pain, joint stiffness, or insufficient muscle strength, and need manual help from medical personnel.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] The utility model relates to a new type knee joint rehabilitation device, including bottom plate, the upper portion all fixedly connected with the support around the bottom plate, a plurality of support top fixedly connected with the cushion, the both sides of cushion outside are fixedly connected with the handrail, the backrest is installed to the left side of cushion outside, the right side fixedly connected with the mounting block of cushion outside, the fixed link is fixedly connected in the mounting block, the double -end motor is arranged in the lower part of cushion, the double -end motor output all are fixedly connected with the turntable, both turnplate one end are fixedly connected with the rotating plate outside of two, both sides of fixed link outside are rotatably connected with the one end of horizontal plate, both horizontal plate interiors all are slidably connected with the sliding block, the other end of two rotating plates are rotatably connected in both sliding block's outside, both the other end of two horizontal plates are fixedly connected with the foot support, both horizontal plate outside all are provided with fixed subassembly, and the fixed subassembly is used for the leg of patient positioner.

[0008] Further, the fixed subassembly includes an arc-shaped plate, the arc-shaped plate is fixedly connected to the outside of the two horizontal plates, the first elastic band is fixedly connected to the left side of the arc-shaped plate, the circular ring is mounted to the outside of the two first elastic bands, the clamping plate is rotatably connected to the inside of the two circular rings, and the second elastic band is fixedly connected to the right side of the arc-shaped plate.

[0009] Further, the mounting frame is fixedly connected to the lower part of the cushion, and the double-end motor is fixedly connected to the inside of the mounting frame.

[0010] Further, the two arc-shaped plates are provided with sponge pads inside.

[0011] Further, the second elastic band is provided with a clamping hole around the inside, and the clamping plate is inserted into the clamping hole.

[0012] Further, the protective pad is sleeved to the outside of the two handrails, and the material of the two protective pads is rubber material.

[0013] Further, the left handrail is fixedly connected with the connecting rod outside, and the storage box is fixedly connected to the bottom of the two connecting rods.

[0014] Further, the right handrail is fixedly connected with the mounting rod outside, the operation panel is mounted to the outside of the mounting rod, and the operation panel is electrically connected with the double-end motor.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the use of the knee joint rehabilitation device, the patient first sits on the cushion, places the lower leg in the middle of the arc-shaped plate, and fixes the leg by the first elastic band and the second elastic band, then touches the operation panel to start the double-head motor, drives the rotating disc and the rotating plate to rotate, pushes the sliding block to move in the horizontal plate, makes the horizontal plate and the arc-shaped plate swing left and right, drives the lower leg to flex and extend, stimulates the knee joint through the swing of the lower leg, promotes blood circulation, reduces joint stiffness and adhesion, and accelerates recovery, so that the patient can complete the knee flexion and extension training independently when using the device, without manual help of medical staff, effectively reducing the work burden of medical staff.

[0017] 2. In the knee joint rehabilitation device, before the knee joint rehabilitation, first place the two legs on the sponge pad outside the arc-shaped plate, insert the second elastic band into the ring, pull the elastic band to fix the leg by the first elastic band and the second elastic band, then insert the clamping plate into the clamping hole of the second elastic band, complete the fixation, this process ensures the stability of the lower leg, maintains the correct posture, prevents improper posture from affecting the training effect, accelerates the recovery process, and helps the patient recover the knee joint function faster. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A perspective view of a novel knee joint rehabilitation device is proposed for the utility model;

[0019] Figure 2 A support upper structure schematic view of a novel knee joint rehabilitation device is proposed for the utility model;

[0020] Figure 3 A rotating disc structure schematic view of a novel knee joint rehabilitation device is proposed for the utility model;

[0021] Figure 4 A horizontal plate internal structure schematic view of a novel knee joint rehabilitation device is proposed for the utility model;

[0022] Figure 5 An arc-shaped plate structure schematic view of a novel knee joint rehabilitation device is proposed for the utility model.

[0023] LEGEND:

[0024] 1, bottom plate; 2, support column; 3, cushion; 4, backrest; 5, armrest; 6, protection pad; 7, mounting rod; 8, operation panel; 9, connection rod; 10, storage box; 11, mounting frame; 12, double-head motor; 13, rotating disc; 14, rotating plate; 15, sliding block; 16, horizontal plate; 17, foot support; 18, fixing rod; 19, mounting block; 20, fixing assembly; 2001, arc-shaped plate; 2002, first elastic band; 2003, ring; 2004, clamping plate; 2005, second elastic band; 21, sponge pad; 22, clamping hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0026] With reference to Figure 1 , Figure 3 and Figure 4The utility model provides a kind of embodiment: a novel knee joint rehabilitation device, including bottom plate 1, bottom plate 1 upper portion all is fixedly connected with pillar 2, by being set bottom plate 1, it is convenient to fix pillar 2, the top of multiple pillars 2 is fixedly connected with seat cushion 3, by being set pillar 2, it is installed to seat cushion 3, seat cushion 3 outside both sides are fixedly connected with handrail 5, by being set handrail 5, it is convenient to the arm of patient and place, seat cushion 3 outside left side is installed with backrest 4, by being set backrest 4, the comfort of patient is improved, seat cushion 3 outside right side is fixedly connected with mounting block 19, mounting block 19 inside is fixedly connected with fixed link 18, seat cushion 3 lower portion is provided with double -end motor 12, double -end motor 12 output end is fixedly connected with turntable 13, one end of two turntables 13 outside is fixedly connected with rotating plate 14, the one end of fixed link 18 outside both sides is rotatably connected with horizontal plate 16, two horizontal plates 16 inside are slidably connected with sliding block 15, the other end of two rotating plates 14 is rotatably connected in the outside of two sliding blocks 15, the other end of two horizontal plates 16 is fixedly connected with foot support 17, by being set foot support 17, it is convenient to the leg of patient and place, two horizontal plates 16 outside are provided with fixed assembly 20, and fixed assembly 20 is used to limit the leg of patient, seat cushion 3 lower portion is fixedly connected with mounting bracket 11, double -end motor 12 is fixedly connected in the inside of mounting bracket 11, by being set mounting bracket 11, it is convenient to install and fix double -end motor 12, two handrails 5 outside are all set with protective pad 6, and the material of two protective pads 6 is rubber material, and the protective pad 6 of rubber material can provide soft contact feeling for patient, avoid when gripping handrail 5, hand is not adapted or rubs excessively, left side handrail 5 outside both sides are fixedly connected with link rod 9, two link rods 9 bottom are fixedly connected with storage box 10, and storage box 10 provides a convenient storage space for patient, and patient can place personal belongings such as mobile phone, drinking bottle, towel or small tool (such as timer, remote controller) for rehabilitation training in it, avoid that article scatters or is inconvenient to take, right side handrail 5 outside is fixedly connected with mounting rod 7, and mounting rod 7 outside is installed with operating panel 8, and operating panel 8 is electrically connected with double -end motor 12, by being set operating panel 8, it is convenient for patient or medical staff to use hand directly, by the electrical connection of operating panel 8 and double -end motor 12, patient or medical staff can accurately control double -end motor 12, such as starting, stopping, adjusting swing speed or intensity, this can be adjusted in real time according to the rehabilitation needs of patient, provides personalized rehabilitation training, ensures that each training meets the state and rehabilitation goal of patient.

[0027] Specifically, when using the knee rehabilitation device, first, the patient sits on the upper part of the seat cushion 3, ensures a comfortable and stable posture, then places the lower leg of the patient in the middle of the two arc-shaped plates 2001, provides reliable support, then fixes the patient's leg by the first elastic band 2002 and the second elastic band 2005, ensures that the lower leg remains stable during the rehabilitation training, avoids accidental sliding or misplacement, which can effectively avoid the additional burden or injury caused by poor posture or unstable legs, ensures the safety of the training, next, the patient or medical staff operates the touch panel 8 to start the double-head motor 12, the start of the double-head motor 12 drives the two rotating discs 13 fixed at its output end to rotate, the rotation of the rotating disc 13 drives the two rotating plates 14 fixed outside to rotate synchronously, the rotation of the two rotating plates 14 is transmitted to the two sliding blocks 15 rotatingly connected at the other end, the sliding blocks 15 slide inside the two horizontal plates 16, when the two sliding blocks 15 move inside the horizontal plates 16, the two horizontal plates 16 swing left and right, the swinging of the horizontal plates 16 further drives the two arc-shaped plates 2001 fixed outside to swing together, in the process of swinging of the arc-shaped plates 2001, the patient's lower leg fixed thereon is swung passively, this process drives the knee joint to perform passive flexion and extension movement through the small left and right swinging of the two legs, thereby stimulating the knee joint gently, through this swinging mode, the blood circulation around the knee joint can be effectively promoted, the metabolism of the tissues around the joint is enhanced, which helps to reduce the joint stiffness and adhesion phenomenon that may occur after surgery or injury, in addition, this continuous passive movement helps to prevent the degeneration and stiffness of soft tissues, improves joint flexibility, and speeds up the rehabilitation process of the knee joint, the patient can complete the flexion and extension training of the knee joint independently, without relying on the manual assistance of medical staff, so that the patient can independently perform effective knee joint activities during the rehabilitation process, which not only reduces the direct participation of medical staff in the rehabilitation process, but also reduces the work burden of medical staff.

[0028] With reference to Figure 2 and Figure 5The fixed assembly 20 comprises an arc-shaped plate 2001 fixedly connected to the outer sides of the two cross plates 16. The arc-shaped plate 2001 can keep the lower leg of the patient in the correct position. The arc-shaped structure can effectively fit the shape of the lower leg of the patient and provide stable support. The outer left side of the arc-shaped plate 2001 is fixedly connected with a first elastic band 2002. The outer sides of the two first elastic bands 2002 are both provided with a circular ring 2003. The inner sides of the two circular rings 2003 are both rotatably connected with a clamping plate 2004. The outer right side of the arc-shaped plate 2001 is fixedly connected with a second elastic band 2005. The inner sides of the two arc-shaped plates 2001 are both provided with a sponge pad 21. The sponge pad 21 provides a soft contact surface for the lower leg of the patient. The sponge pad 21 can buffer the pressure of the arc-shaped plate 2001 on the leg, so as to avoid discomfort or pain caused by long-time contact with the arc-shaped plate 2001. Especially in the rehabilitation training, the sponge pad 21 can effectively improve the comfort of the patient. The inner side of the second elastic band 2005 is provided with a clamping hole 22 around. The clamping plate 2004 is inserted into the clamping hole 22. The length and tightness of the elastic band can be flexibly adjusted according to the size and needs of the leg of the patient by setting the clamping plate 2004 and the clamping hole 22. By inserting different clamping holes 22, the medical staff or the patient can quickly adjust the tightness of the elastic band, so as to ensure that the leg is stably fixed and appropriate support is provided, and discomfort caused by too loose or too tight is avoided.

[0029] Specifically, before the knee rehabilitation training is performed, first, the patient's two lower legs are lightly placed on the upper part of the sponge pad 21 arranged outside the two arc-shaped plates 2001. The soft material of the sponge pad 21 can provide comfortable support for the patient's lower legs, avoiding discomfort caused by long-term contact with hard materials. At the same time, the design of the arc-shaped plate 2001 naturally fits the lower leg, ensuring that the patient's leg is in the correct posture during the training process. Then, the second elastic band 2005 is taken out and inserted into the inside of the circular ring 2003. Subsequently, the second elastic band 2005 is gently pulled to adjust the tightness of the elastic band, so that the second elastic band 2005 and the first elastic band 2002 jointly act on the patient's leg to limit and fix it. At this time, the patient's lower leg is stably fixed in the middle position of the sponge pad 21 and the arc-shaped plate 2001. The elastic band provides appropriate support and pressure to ensure that the patient maintains a stable posture during the training process. In order to further ensure the firm fixation of the elastic band, the user rotates the clamping plate 2004 connected outside the circular ring 2003 to align the clamping hole 22 prearranged on the second elastic band 2005, and inserts the clamping plate 2004 into the corresponding clamping hole 22 to avoid the elastic band from loosening or shifting during the training process. Through the cooperation of the clamping plate 2004 and the clamping hole 22, the tightness can be adjusted according to the specific condition of the patient's leg to ensure that the leg is neither too tight nor slides due to insecure fixation. The limiting and fixing process not only ensures the correct posture of the patient's leg during the rehabilitation training, but also avoids the decline of the training effect caused by improper posture or operation error, thereby maximizing the scientificity and normativity of the rehabilitation training.

[0030] Working principle: when using the knee rehabilitation device, first, the patient sits on the upper part of the cushion 3, then places the lower leg in the middle of the two arc-shaped plates 2001, then limits the patient's leg through the first elastic band 2002 and the second elastic band 2005, then starts the double-head motor 12 by touching the operation panel 8, the double-head motor 12 rotates with the two rotating discs 13 fixed at the output end, the two rotating discs 13 rotate with the two rotating plates 14 fixed outside, the two rotating plates 14 rotate with the two sliding blocks 15 rotatingly connected at the other end to move inside the two horizontal plates 16, the two horizontal plates 16 swing left and right when the two sliding blocks 15 move, the two horizontal plates 16 swing left and right when the two horizontal plates 16 swing left and right, the two arc-shaped plates 2001 swing with the lower legs placed inside, the knee joint can be stimulated through the swing of the two lower legs, promoting blood circulation, reducing joint stiffness and adhesion, and accelerating the rehabilitation process of the knee joint, realizing that the patient can complete the flexion and extension training of the knee joint independently when using the knee rehabilitation device, without the help of medical staff, reducing the direct participation of medical staff in the rehabilitation process, and reducing the work burden of medical staff, before the knee rehabilitation, first, place the two legs on the upper part of the sponge pad 21 arranged outside the two arc-shaped plates 2001, then insert the second elastic band 2005 into the inside of the ring 2003, then pull the second elastic band 2005, so that the first elastic band 2002 and the second elastic band 2005 limit and fix the patient's leg, then the clamping plate 2004 rotatingly connected outside the ring 2003 is clamped into the inside of the corresponding clamping hole 22 in the second elastic band 2005, which realizes that the lower legs of the patient can be limited and fixed when using the knee rehabilitation device, which can ensure that the correct exercise posture is maintained during knee training, preventing poor or incorrect operation from causing poor training effect, thereby accelerating the rehabilitation process and helping the patient recover the normal knee function faster.

[0031] Finally, it should be noted that: the above only describes preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. A new type of knee joint rehabilitation device comprising a base plate (1), characterized in that: The bottom plate (1) upper four around fixedly connected with the support (2), a plurality of the support (2) top fixedly connected with the cushion (3), the cushion (3) outside both sides are fixedly connected with the handrail (5), the cushion (3) outside left side is mounted with the backrest (4), the cushion (3) outside right side is fixedly connected with the mounting block (19), the mounting block (19) inside is fixedly connected with the fixed rod (18), the cushion (3) lower part is provided with double head motor (12), the double head motor (12) output is fixedly connected with the turntable (13), two the turntable (13) outside is fixedly connected with the rotating plate (14) one end, the fixed rod (18) outside both sides are rotatably connected with the horizontal plate (16) one end, two the horizontal plate (16) inside are slidably connected with the sliding block (15), two the rotating plate (14) the other end is rotatably connected in two the sliding block (15) outside, two the horizontal plate (16) the other end is fixedly connected with the foot support (17), two the horizontal plate (16) outside is provided with fixed assembly (20), the fixed assembly (20) is used for limiting the leg of patient.

2. A new knee joint rehabilitation device according to claim 1, characterized in that: The fixed assembly (20) includes an arc-shaped plate (2001), the arc-shaped plate (2001) is fixedly connected to the outside of the two horizontal plates (16), the arc-shaped plate (2001) is fixedly connected with the first elastic band (2002) on the left side, two the first elastic band (2002) is mounted with a circular ring (2003) outside, two the circular ring (2003) is rotatably connected with the clamping plate (2004) inside, the arc-shaped plate (2001) is fixedly connected with the second elastic band (2005) on the right side.

3. A new knee joint rehabilitation device according to claim 1, characterized in that: The cushion (3) is fixedly connected with a mounting frame (11) at the lower part, and the double head motor (12) is fixedly connected inside the mounting frame (11).

4. A new knee joint rehabilitation device according to claim 2, characterized in that: The two arc-shaped plates (2001) are provided with sponge pads (21) inside.

5. The new knee rehabilitation device according to claim 2, characterized in that: The second elastic band (2005) is provided with a clamping hole (22) around the inside, and the clamping plate (2004) is inserted into the clamping hole (22).

6. A new knee rehabilitation device as claimed in claim 1, wherein: Two the handrail (5) outside is provided with a protective pad (6), and the material of the protective pad (6) is rubber material.

7. A new knee rehabilitation device as claimed in claim 1, wherein: The left side of the handrail (5) is fixedly connected with a connecting rod (9) on both sides, and the connecting rod (9) is fixedly connected with a storage box (10) at the bottom.

8. A new knee rehabilitation device as claimed in claim 1, wherein: The right side of the handrail (5) is fixedly connected with a mounting rod (7), and the mounting rod (7) is provided with an operation panel (8) outside, and the operation panel (8) is electrically connected with the double head motor (12).