Device for assisting flexion and extension of knee joint

Abstract

The utility model belongs to the technical field of auxiliary flexion and extension of knee joints, and particularly relates to a device for assisting flexion and extension of knee joints. Comprising two first supporting plates which are distributed left and right, second supporting plates are hinged to the lower ends of the first supporting plates, and the two first supporting plates are connected through a first connecting belt; the two second supporting plates are connected through a second connecting belt; the same elastic pad is arranged on the front sides of the first supporting plate and the second supporting plate; the left side and the right side of the upper end of the elastic pad are bound to the two first supporting plates through first binding bands respectively, the left side and the right side of the lower end of the elastic pad are bound to the two second supporting plates through second binding bands respectively, and the elastic pad is made of elastic materials. The two first supporting plates and the two second supporting plates are worn from the rear sides of the legs of a patient, the elastic pad is worn from the front sides of the knees, and the elastic pad is bound with the first supporting plates and the second supporting plates through the first binding bands and the second binding bands, so that the whole wearing work is conveniently completed.

Description

Technical Field

[0001] This utility model belongs to the field of knee joint flexion and extension technology, and in particular relates to a device for assisting knee joint flexion and extension. Background Technology

[0002] As one of the largest and most complex joints in the human body, the health of the knee joint directly affects an individual's ability to walk, run, and perform daily activities. With an aging population and an increase in sports injuries, the treatment and rehabilitation of knee joint diseases and injuries have become important topics in the medical field. Assistive knee flexion and extension devices, as important tools in rehabilitation therapy, are receiving increasing attention for their design and application.

[0003] In pursuit of stability, existing knee flexion and extension assist devices on the market have overly complex structural designs, making them cumbersome and inconvenient to wear, and sometimes requiring assistance from others. Utility Model Content

[0004] The purpose of this invention is to provide a device that assists in knee flexion and extension, which can be easily worn.

[0005] The aforementioned device for assisting knee flexion and extension includes two first support plates distributed left and right. A second support plate is hinged to the lower end of each first support plate, and the two first support plates are connected by a first connecting strap. The two second support plates are connected by a second connecting strap. A common elastic pad is provided on the front side of both the first and second support plates. The upper left and right sides of the elastic pad are respectively bound to the two first support plates by first straps, and the lower left and right sides of the elastic pad are respectively bound to the two second support plates by second straps. The elastic pad is made of elastic material.

[0006] Furthermore, a first connecting ring for binding with the first strap is fixed on the outer wall of the first support plate.

[0007] Furthermore, a second connecting ring for binding with the second strap is fixed on the outer wall of the second support plate.

[0008] Furthermore, a first connecting block is fixed to the lower end of the first support plate, and a second connecting block is fixed to the upper end of the second support plate. The first connecting block and the second connecting block have a disc structure. A first hinge hole is opened at the center of the first connecting block, and a second hinge hole is opened at the center of the second connecting block. The same threaded sleeve is installed in the first hinge hole and the same threaded sleeve is installed in the threaded sleeve. A stud that is threadedly engaged with the threaded sleeve is installed in the threaded sleeve. One end of the threaded sleeve passes through the second hinge hole and is fixed with a first nut. One end of the stud passes through the first hinge hole and is fixed with a second nut.

[0009] Furthermore, a first blind hole is provided on the second connecting block corresponding to the first nut, and the first nut is located in the first blind hole.

[0010] Furthermore, a second blind hole is provided on the first connecting block corresponding to the second nut, and the second nut is located in the second blind hole.

[0011] Furthermore, both the first connecting strip and the second connecting strip are made of elastic material.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This invention involves wearing two first support plates and two second support plates from the back of the patient's legs, and an elastic pad from the front of the knee. The elastic pad is then bound to the first and second support plates by first and second straps, making the overall wearing process relatively convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 3 This is a diagram showing the connection structure between the first support plate and the second support plate.

[0017] The components in the diagram are named as follows: 1. First support plate; 2. Second connecting block; 3. First connecting block; 4. Elastic pad; 5. Second connecting ring; 6. Second strap; 7. Second support plate; 8. Second Velcro; 9. First Velcro; 10. First connecting ring; 11. First strap; 12. First nut; 13. Second connecting band; 14. First connecting band; 15. Stud. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0019] Example

[0020] This embodiment describes a device for assisting knee flexion and extension, such as... Figure 1 and Figure 2 As shown, it includes two first support plates 1 distributed left and right. The lower ends of the first support plates 1 are hinged to second support plates 7. Both the first support plates 1 and the second support plates 7 are made of aluminum alloy, which gives them good support strength and light weight, making them more comfortable for patients to wear.

[0021] like Figure 3As shown, a first connecting block 3 is fixed to the lower end of the first support plate 1, and a second connecting block 2 is fixed to the upper end of the second support plate 7. The first connecting block 3 and the second connecting block 2 have a disc structure. A first hinge hole is opened at the center of the first connecting block 3, and a second hinge hole is opened at the center of the second connecting block 2. The same threaded sleeve is installed in the first hinge hole and the second hinge hole. A stud 15 with a threaded fit is installed in the threaded sleeve. One end of the threaded sleeve protrudes from the second hinge hole and is fixed with a first nut 12. One end of the stud 15 protrudes from the first hinge hole and is fixed with a second nut. The threaded sleeve is installed in both the first hinge hole and the second hinge hole, so that the first support plate 1 and the second support plate 7 can rotate around the threaded sleeve. The first nut 12 and the second nut cooperate to prevent the second connecting block 2 and the first connecting block 3 from detaching from the threaded sleeve. The first nut 12 fits against the second connecting block 2, and the second nut fits against the first connecting block 3 to prevent the second connecting block 2 and the first connecting block 3 from becoming loose.

[0022] A first blind hole is provided on the second connecting block 2 corresponding to the first nut 12, and the first nut 12 is located inside the first blind hole. A second blind hole is provided on the first connecting block 3 corresponding to the second nut, and the second nut is located inside the second blind hole. Hiding the first nut 12 and the second nut inside the second blind hole is for aesthetic purposes and also to prevent the first nut 12 and the second nut from protruding and scratching the patient or causing discomfort.

[0023] Two first support plates 1 are connected by a first connecting strap 14; two second support plates 7 are connected by a second connecting strap 13; the front sides of the first support plates 1 and the second support plates 7 are provided with the same elastic pad 4; the upper left and right sides of the elastic pad 4 are respectively bound to the two first support plates 1 by first straps 11, and the lower left and right sides of the elastic pad 4 are respectively bound to the two second support plates 7 by second straps 6. The elastic pad 4 is made of elastic material. A first connecting ring 10 for binding with the first strap 11 is fixed on the outer wall of the first support plate 1. A second connecting ring 5 for binding with the second strap 6 is fixed on the outer wall of the second support plate 7.

[0024] During production, there are two first straps 11, which are connected to the left and right sides of the upper end of the elastic pad 4 respectively, and two second straps 6, which are tied to the left and right sides of the lower end of the elastic pad 4 respectively.

[0025] In use, the first strap 11 on the left passes independently through the first connecting ring 10 on the left and is then folded back and attached to the outer surface of the elastic pad 4 via the first Velcro 9; the first strap 11 on the right passes independently through the first connecting ring 10 on the right and is then folded back and attached to the outer surface of the elastic pad 4 via the first Velcro 9. Both first straps 11 can be fastened simultaneously when worn. The second strap 6 on the left passes independently through the second connecting ring 5 on the left and is then folded back and attached to the outer surface of the elastic pad 4 via the second Velcro 8; the second strap 6 on the right passes independently through the second connecting ring 5 on the right and is then folded back and attached to the outer surface of the elastic pad 4 via the second Velcro 8. Both second straps 6 can be fastened simultaneously when worn.

[0026] The loop side of the first Velcro 9 is fixed to the outer surface of the elastic pad 4, and the hook side of the first Velcro 9 is fixed to the connecting end of the first strap 11. The loop side of the second Velcro 8 is fixed to the outer surface of the elastic pad 4, and the hook side of the second Velcro 8 is fixed to both ends of the second strap 6. The elastic pad 4 is made of elastic fabric.

[0027] In actual wearing: two first support plates 1 are located on the left and right sides of the thigh, two second support plates 7 are located on the left and right sides of the calf, a first connecting strap 14 is located on the back of the thigh and fits against it, and a second connecting strap 13 is located on the back of the calf and fits against it; the second connecting block 2 and the first connecting block 3 are located on the left and right sides of the patient's knee. The first support plates 1 and the second support plates 7 are put on from the back of the patient's leg, the elastic pad 4 is placed on the patient's knee from the front, and then the two first straps 11 are tied to the two first support plates 1 respectively, and the two second straps 6 are tied to the two second support plates 7 respectively, thus completing the overall wearing process in a relatively convenient and quick manner.

[0028] Working principle: After wearing the device, with the patient's knee joint in an extended position, the elastic pad 4 is in its natural state. When the patient's knee joint bends, the elastic pad 4 is stretched. When the knee joint straightens again, the elastic pad 4 returns to its initial state. During this process, the rebound of the elastic pad 4 provides the force to assist in knee extension. In other words, the greater the elasticity of the elastic pad 4, the stronger the force assisting the patient's knee flexion and extension. Thus, by replacing different elastic pads 4, the stretching force can be varied to suit different groups of people, broadening the user base.

[0029] Both the first connecting strap 14 and the second connecting strap 13 are made of elastic material. Since each patient's leg is of different thickness, the first supporting plate 1 and the second supporting plate 7 are not always perfectly aligned on the left and right sides of the patient's leg. For example, if the first connecting strap 14 and the second connecting strap 13 are short, the first supporting plate 1 and the second supporting plate 7 will not reach the left and right sides of the patient's leg. Therefore, the first connecting strap 14 and the second connecting strap 13 are made of elastic fabric. In use, the first supporting plate 1 and the second supporting plate 7 are strongly pulled to the sides of the patient's leg by the pulling of the first strap 11 and the second strap 6. To achieve this function, the elasticity of the elastic pad 4 needs to be greater than the elasticity of the second connecting strap 13 and the first connecting strap 14. The extensibility of the second connecting strap 13 and the first connecting strap 14 allows the first supporting plate 1 and the second supporting plate 7 to adapt to patients with different leg thicknesses.

[0030] Since the second connecting strap 13 and the first connecting strap 14 are made of elastic material, and there are no other supporting components between the two first support plates 1 and the two second support plates 7, the two first support plates 1 and the two second support plates 7 can be attached together, reducing space occupation and making them easy to carry.

Claims

1. A device for assisting knee flexion and extension, comprising two first support plates (1) distributed laterally, wherein a second support plate (7) is hinged to the lower end of each first support plate (1), characterized in that: Two first support plates (1) are connected by a first connecting strap (14); two second support plates (7) are connected by a second connecting strap (13); the same elastic pad (4) is provided on the front side of the first support plate (1) and the second support plate (7); the left and right sides of the upper end of the elastic pad (4) are respectively bound to the two first support plates (1) by a first strap (11), and the left and right sides of the lower end of the elastic pad (4) are respectively bound to the two second support plates (7) by a second strap (6). The elastic pad (4) is made of elastic material.

2. The device for assisting knee flexion and extension according to claim 1, characterized in that: A first connecting ring (10) for binding the first strap (11) is fixed on the outer side wall of the first support plate (1).

3. The device for assisting knee flexion and extension according to claim 1, characterized in that: A second connecting ring (5) for binding the second strap (6) is fixed on the outer wall of the second support plate (7).

4. The device for assisting knee flexion and extension according to claim 1, characterized in that: The lower end of the first support plate (1) is fixed with a first connecting block (3), and the upper end of the second support plate (7) is fixed with a second connecting block (2). The first connecting block (3) and the second connecting block (2) are in a disc structure. A first hinge hole is opened at the center of the first connecting block (3), and a second hinge hole is opened at the center of the second connecting block (2). The same threaded sleeve is installed in the first hinge hole and the second hinge hole. A stud (15) that is threadedly engaged with the threaded sleeve is installed in the threaded sleeve. One end of the threaded sleeve passes through the second hinge hole and is fixed with a first nut (12). One end of the stud (15) passes through the first hinge hole and is fixed with a second nut.

5. The device for assisting knee flexion and extension according to claim 4, characterized in that: A first blind hole is provided on the second connecting block (2) corresponding to the first nut (12), and the first nut (12) is located in the first blind hole.

6. The device for assisting knee flexion and extension according to claim 4, characterized in that: A second blind hole is provided on the first connecting block (3) corresponding to the second nut, and the second nut is located in the second blind hole.

7. The device for assisting knee flexion and extension according to claim 1, characterized in that: Both the first connecting strip (14) and the second connecting strip (13) are made of elastic material.

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