Traction type knee-ankle-foot orthosis
By designing a pull-type knee-ankle foot orthosis including thigh sleeves, calf sleeves and foot support, the use of connectors and angle adjustments to achieve knee joint fixation and passive traction of the ankle joint, the shortcomings of existing orthotics in controlling muscle tone and preventing tendon contractures are solved, and more effective joint orthotics and stable traction effects are achieved.
Patent Information
- Application Number
- CN202421757999.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-24
AI Technical Summary
Existing orthosis devices are difficult to effectively control the increase in muscle tone of the knee and ankle joints, resulting in tendon contractures and joint deformities. Especially when the gastrocnemius tone is increased, the pulling effect of traditional orthosis is not ideal and cannot be worn.
A pull-type knee ankle foot orthosis device is designed. By setting a first connection between the thigh sleeve and the calf sleeve, and setting a second connection and angle adjustment member between the calf sleeve and the foot support, the fixation of the knee joint and the passive pulling of the ankle joint is realized, and the inclination angle of the foot support is adjusted to enhance the pulling effect.
The orthosis can effectively control muscle tone increase, prevent tendon contracture and correct joint deformities, increase the control ability of the knee joint, and ensure that the traction force of the ankle joint is more stable and lasting.
Smart Images
Figure CN222983221U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a traction type knee-ankle-foot orthosis. Background Art
[0002] The characteristics of lower limb muscle tone in hemiplegic patients are mainly manifested as increased muscle tone, decreased muscle strength, active or hyperactive tendon reflexes, and positive pathological signs, etc. The pulling force is more stable and lasting. These symptoms will seriously affect the patient's walking ability and daily life. In order to help the patient recover at an early date, it is currently mostly required that the patient perform lower limb knee joint and ankle joint rehabilitation training for 30 minutes to 1 hour every day. In most cases, the patient's high muscle tone will cause the ankle joint to be in the plantar flexion position and accompanied by knee joint flexion. Without the assistance of an orthosis, in severe cases, it will cause contracture of the flexor knee tendon and Achilles tendon, and ultimately lead to knee joint flexion contracture and Achilles tendon contracture, and the patient cannot stand and walk, seriously affecting the rehabilitation effect. Most of the existing orthopedic braces are specially designed for the ankle joint and have a good effect on patients with Achilles tendon contracture. However, since the gastrocnemius muscle is a cross-joint (knee joint and ankle joint) muscle, the tendon contracture caused by increased gastrocnemius muscle tone will be accompanied by knee joint flexion, and the traction effect of various ankle-foot orthoses is not ideal; the traditional functional position knee-ankle-foot orthosis (knee extension position 0° and ankle joint 90° neutral position) cannot be worn due to the already generated tendon contracture. Content of the Utility Model
[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a traction type knee-ankle-foot orthosis with a simple structure, which can control the knee joint, passively pull the ankle joint while fixing the knee joint at 0° in the knee extension position, can effectively control the increased muscle tone, prevent tendon contracture and correct deformity.
[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows: a traction type knee-ankle-foot orthosis, including a thigh sleeve, a calf sleeve and a footrest. The thigh sleeve and the calf sleeve are both vertically arranged, and the thigh sleeve is located above the calf sleeve. The footrest is arranged below the calf sleeve in the front-back direction. The lower end of the thigh sleeve is connected to the upper end of the calf sleeve through a first connecting piece. The lower end of the calf sleeve is vertically swing-connected to the rear end of the footrest through a second connecting piece. The middle part corresponding to the length direction of the footrest is connected to the upper end of the calf sleeve through an angle adjusting piece, and the angle adjusting piece is used to adjust the vertical inclination angle of the footrest relative to the calf sleeve.
[0005] The beneficial effects of the above technical solution are as follows: By adding a thigh sleeve connected to the calf sleeve through a first connecting piece on the basis of the existing ankle-foot orthosis, double-joint orthosis of the knee-ankle-foot can be achieved. And an angle adjusting piece is arranged between the calf sleeve and the footrest, so that the inclination angle of the footrest relative to the calf sleeve can be adjusted. This traction type knee-ankle-foot orthosis increases knee joint control. While fixing the knee joint at 0° in the knee extension position, passive traction is applied to the ankle joint, which can effectively control increased muscle tension, prevent tendon contracture and correct deformity.
[0006] In the above technical solution, two first connecting pieces are provided. The two first connecting pieces are respectively vertically arranged on the left and right sides between the thigh sleeve and the calf sleeve, and both ends of each first connecting piece are respectively connected to the corresponding sides of the thigh sleeve and the calf sleeve.
[0007] The beneficial effects of the above technical solution are as follows: By arranging two first connecting pieces to connect on both sides of the thigh sleeve and the calf sleeve, the reliability of the connection between the thigh sleeve and the calf sleeve is better.
[0008] In the above technical solution, two second connecting pieces are provided. The second connecting pieces are vertically arranged on the left and right sides between the calf sleeve and the footrest. The upper ends of the second connecting pieces are connected to the corresponding sides of the lower ends of the calf sleeve, and the lower ends of the second connecting pieces are rotatably connected to the corresponding sides of the rear ends of the footrest.
[0009] The beneficial effects of the above technical solution are as follows: By arranging two second connecting pieces, and the two second connecting pieces are respectively located on both sides of the footrest and the calf sleeve, the connection between the footrest and the calf sleeve is more stable.
[0010] In the above technical solution, the angle adjusting piece includes a support seat and two length adjusting pieces. The support seat is a U-shaped piece. The support seat is horizontally arranged with its notch facing forward. The upper end of the calf sleeve is located in the notch of the support seat and is connected to the end of the support seat away from the notch. The two length adjusting pieces are both vertically arranged and are spaced apart in the left-right direction. The upper end of each length adjusting piece is swingably connected to the corresponding end of the support seat in the front-rear direction, and the lower end of each length adjusting piece is swingably connected to the middle of the corresponding side of the footrest in the front-rear direction. The lengths of the two length adjusting pieces are adjusted to adjust the vertical inclination angle of the footrest relative to the calf sleeve.
[0011] The beneficial effects of the above technical solution are as follows: In this way, the support seat can provide support for the two length adjusting pieces, and the support seat is set as a U-shaped piece, so that the wearing of the calf sleeve is not affected. And the two length adjusting pieces can adjust the length to adjust the inclination angle of the footrest relative to the calf sleeve, so as to apply passive traction to the ankle joint.
[0012] In the above technical solution, the length adjusting piece is a turnbuckle.
[0013] The beneficial effects of the above technical solution are as follows: Its length adjustment is convenient.
[0014] In the above technical solution, both the thigh sleeve and the calf sleeve are tubular members with an open front side, and binding members are provided at the open front sides of the thigh sleeve and the calf sleeve and at the upper rear end of the footrest.
[0015] The beneficial effects of the above technical solution are as follows: In this way, it is convenient to put on and take off. The front sides of the thigh sleeve and the calf sleeve are both open, and for the footrest, only the sole of the foot needs to be placed on it. At this time, by untying the straps, the leg can be conveniently put into the traction knee-ankle-foot orthosis, and then the binding members can be tightened. When taking it off, it is the reverse process of wearing.
[0016] In the above technical solution, a plurality of the binding members are arranged at intervals in the vertical direction on the thigh sleeve and the calf sleeve.
[0017] The beneficial effects of the above technical solution are as follows: In this way, the binding effect of the thigh sleeve and the calf sleeve on the leg is better.
[0018] In the above technical solution, the thigh sleeve, the calf sleeve and the footrest are all made of plastic material.
[0019] The beneficial effects of the above technical solution are as follows: It is light and has a good orthopedic effect.
[0020] In the above technical solution, the footrest is in the shape of a sole, and a skirt is convexly provided upward at its edge.
[0021] The beneficial effects of the above technical solution are as follows: In this way, the footrest can directly hold up the sole of the foot, and the surrounding skirt can limit the edge of the sole of the foot.
[0022] In the above technical solution, a flexible cushion layer is further provided in the footrest.
[0023] The beneficial effects of the above technical solution are as follows: In this way, its wearing comfort is good. Brief Description of the Drawings
[0024] Figure 1 It is a front view of the traction knee-ankle-foot orthosis according to Embodiment 1 of the present utility model;
[0025] Figure 2 It is a partial schematic view of the front side of the traction knee-ankle-foot orthosis according to Embodiment 1 of the present utility model;
[0026] Figure 3 It is a schematic structural view of the binding member in Embodiment 1 of the present utility model;
[0027] Figure 4Schematic diagram of the structure when a connecting ear is provided on the footrest of the traction-type knee-ankle-foot orthosis described in Embodiment 2 of the present utility model;
[0028] Figure 5 Front view of the footrest provided with a support portion and a connecting ear in Embodiment 2 of the present utility model.
[0029] In the figure: 1 thigh sleeve; 2 calf sleeve; 3 footrest; 31 skirt; 32 cushion; 33 support portion; 34 connecting ear; 4 first connecting member; 5 second connecting member; 6 angle adjusting member; 61 support seat; 62 length adjusting member; 7 binding member; 71 hanging ring; 72 binding strap. Detailed implementation manners
[0030] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model. In the following paragraphs, the present utility model will be described more specifically by way of example with reference to the accompanying drawings. The advantages and features of the present utility model will be clearer according to the following description and the claims. It should be noted that the accompanying drawings are all in very simplified forms and use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the embodiments of the present utility model.
[0031] Embodiment 1
[0032] As Figure 1 shown, this embodiment provides a traction-type knee-ankle-foot orthosis, including a thigh sleeve 1, a calf sleeve 2 and a footrest 3. The thigh sleeve 1 and the calf sleeve 2 are both vertically arranged, and the thigh sleeve 1 is located above the calf sleeve 2. The footrest 3 is arranged below the calf sleeve 2 in the front-rear direction. The lower end of the thigh sleeve 1 is connected to the upper end of the calf sleeve 2 through a first connecting member 4. The lower end of the calf sleeve 2 is vertically swingably connected to the rear end of the footrest 3 through a second connecting member 5. The middle part corresponding to the length direction of the footrest 3 is connected to the upper end of the calf sleeve 2 through an angle adjusting member 6. The angle adjusting member 6 is used to adjust the vertical inclination angle of the footrest 3 relative to the calf sleeve 2. By adding a thigh sleeve connected to the calf sleeve through a first connecting member on the basis of the existing ankle-foot orthosis, double-joint orthosis of the knee-ankle-foot can be realized. And by arranging an angle adjusting member between the calf sleeve and the footrest, the inclination angle of the footrest relative to the calf sleeve can be adjusted. This traction-type knee-ankle-foot orthosis increases knee joint control. While fixing the knee joint at 0° in the knee extension position, passive traction is performed on the ankle joint, which can effectively control increased muscle tension, prevent tendon contracture and correct deformities.
[0033] As Figure 1 and Figure 2As shown, in the above technical solution, two first connectors 4 are provided. The two first connectors 4 are respectively vertically arranged on the left and right sides between the thigh sleeve 1 and the calf sleeve 2, and both ends of each first connector 4 are respectively connected to the corresponding sides of the thigh sleeve 1 and the calf sleeve 2. By providing two first connectors to connect on both sides of the thigh sleeve and the calf sleeve, the reliability of the connection between the thigh sleeve and the calf sleeve is better; two second connectors 5 are provided. The second connectors 5 are vertically arranged on the left and right sides between the calf sleeve 2 and the footrest 3. The upper end of the second connector 5 is connected to the corresponding side of the lower end of the calf sleeve 2, and the lower end of the second connector 5 is rotatably connected to the corresponding side of the rear end of the footrest 3. By providing two second connectors, and the two second connectors are respectively located on both sides of the footrest and the calf sleeve, the connection between the footrest and the calf sleeve is more stable.
[0034] As Figure 1 shown, in the above technical solution, the angle adjusting member 6 includes a support seat 61 and two length adjusting members 62. The support seat 61 is a U-shaped member. The support seat 61 is horizontally arranged with its notch facing forward. The upper end of the calf sleeve 2 is located in the notch of the support seat 61 and is connected to the end of the support seat 61 away from the notch. The two length adjusting members 62 are both vertically arranged and are spaced apart in the left-right direction. The upper end of each length adjusting member 62 is swingably connected to the corresponding end of the support seat 61 in the front-rear direction, and the lower end of each length adjusting member 62 is swingably connected to the middle of the corresponding side of the footrest 3 in the front-rear direction. By adjusting the lengths of the two length adjusting members 62, the vertical inclination angle of the footrest 3 relative to the calf sleeve 2 is adjusted. In this way, the support seat can provide support for the two length adjusting members, and the support seat is set as a U-shaped member, which does not affect the wearing of the calf sleeve. The two length adjusting members can adjust the length to adjust the inclination angle of the footrest relative to the calf sleeve, so as to passively stretch the ankle joint.
[0035] In the above technical solution, the length adjusting member 62 is a turnbuckle, and its length adjustment is convenient.
[0036] As Figure 1 - Figure 3 shown, in the above technical solution, both the thigh sleeve 1 and the calf sleeve 2 are tubular members with an open front side, and binding members 7 are provided at the open front sides of the thigh sleeve 1 and the calf sleeve 2 and at the upper rear end of the footrest 3. In this way, it is convenient to put on and take off. The front sides of the thigh sleeve and the calf sleeve are both open, and the foot only needs to be placed on the footrest. At this time, by untying the binding straps, the leg can be conveniently put into the traction-type knee-ankle-foot orthosis, and then the binding members are tightened. When taking it off, it is the reverse process of wearing (in this embodiment, the binding member on the footrest is tightly located on the front side of the connection between the footrest and the calf sleeve).
[0037] In this embodiment, the two ends of the first connecting member are fixedly connected to the ends of the thigh sleeve and the calf sleeve that are close to each other (the connection can be achieved by riveting, and each end of the first connecting member has multiple riveting points). In this embodiment, the upper end of the second connecting member is fixedly connected to the lower end of the calf sleeve, and the lower end of the second connecting member is rotatably connected to the corresponding side of the footrest. The upper end of the second connecting member is also connected to the calf sleeve through multiple riveting points, and the lower end of the second connecting member is riveted to the footrest through a single riveting point (when riveting with a single riveting point, relative rotation between the two is enabled).
[0038] As Figure 1 and Figure 2 shown, in the above technical solution, a plurality of the binding members 7 are arranged at intervals in the vertical direction on the thigh sleeve 1 and the calf sleeve 2, so that the binding effect of the thigh sleeve and the calf sleeve on the leg is better.
[0039] In the above technical solution, the thigh sleeve 1, the calf sleeve 2, and the footrest 3 are all made of plastic materials, which are light and have good orthopedic effects.
[0040] As Figure 1 and Figure 3 shown, in the above technical solution, the footrest 3 is in the shape of a shoe sole, and a skirt 31 protrudes upward at its edge, so that the footrest can directly support the sole of the foot, and the surrounding skirt can limit the edge of the sole of the foot.
[0041] In the above technical solution, a flexible cushion layer 32 (similar to an insole) is further arranged in the footrest 3, so that its wearing comfort is good.
[0042] Specifically, as Figure 3 shown, in this embodiment, the binding member can be similar to the structure using Velcro for binding on current children's sports shoes. Specifically, it includes a hanging ring 72 and a binding strap 71. The binding strap 71 has Velcro. Taking the thigh sleeve as an example, one end of the binding strap 71 is connected to the open side of the thigh sleeve, and the hanging ring 72 is arranged on the other open side of the thigh sleeve. At this time, the free end of the binding strap 71 passes through the hanging ring 72 and then folds back and adheres to itself (the setting method of Velcro on the binding strap belongs to the prior art and will not be elaborated here). The structures of the binding members on the calf sleeve and the footrest are the same as those on the thigh sleeve, and the structure of the thigh sleeve is similar to that of the calf sleeve, except that the size is increased to match the thigh.
[0043] This embodiment is based on the existing ankle-foot orthosis for technical upgrading, mainly by adding a thigh sleeve and an angle-adjusting member, and the structures and connection relationships of the calf sleeve and the footrest belong to the prior art.
[0044] The traction-type knee-ankle-foot orthosis provided in this embodiment can passively traction stroke patients with high muscle tension or knee flexion contracture, ankle Achilles tendon contracture or tension in the knee joint straight position, prevent or correct joint mobility limitation or deformity, and its traction force is more stable and lasting.
[0045] In this embodiment, the support base is fixed on the calf sleeve, and both ends thereof serve as the proximal fulcrum for ankle traction, and at the same time, the lever arm of traction can be increased, so that a greater traction moment can be provided; the two first connectors connect and fix the thigh sleeve and the calf sleeve in the knee extension position, and the main function is to keep the knee joint in the straight position; the two second connectors serve as the ankle rotation center, so that the rotation center is as close as possible to the physiological ankle center.
[0046] Embodiment 2
[0047] Same as Embodiment 1, the difference is that, as Figure 4 and Figure 5 shown, in order to improve the stability of the connection between the length adjusting member and the footrest, both sides of the bottom of the footrest can be convexly provided with support portions 33 at the metatarsophalangeal joint to both sides, and connecting ears 34 are provided on the support portions 33 to swing and connect with the lower ends of the corresponding length adjusting members 62, so that the comfort of the footrest during wearing can be better, especially it can avoid the inward extrusion of the skirt by the two length adjusting members, which may cause extrusion of the sole of the foot.
[0048] The above is only the preferred embodiment of the present invention, and does not impose any form of limitation on the present invention; any ordinary technician in the industry can smoothly implement the present invention according to the description in the accompanying drawings and the above description; however, any minor changes, modifications and evolutions made by those skilled in the art within the scope of the technical solution of the present invention using the technical content disclosed above are equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essence of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims
1. A traction-type knee-ankle-foot orthosis, characterized in that: The invention comprises a thigh sleeve (1), a calf sleeve (2) and a foot rest (3), wherein the thigh sleeve (1) and the calf sleeve (2) are both arranged vertically, and the thigh sleeve (1) is located above the calf sleeve (2), and the foot rest (3) is arranged below the calf sleeve (2) in the front-back direction, the lower end of the thigh sleeve (1) is connected to the upper end of the calf sleeve (2) through a first connecting piece (4), the lower end of the calf sleeve (2) and the rear end of the foot rest (3) are vertically swingably connected through a second connecting piece (5), and the middle part of the foot rest (3) corresponding to the length direction is connected to the upper end of the calf sleeve (2) through an angle adjusting piece (6), and the angle adjusting piece (6) is used to adjust the vertical inclination angle of the foot rest (3) relative to the calf sleeve (2).
2. The traction knee-ankle-foot orthosis according to claim 1, characterized in that: Two first connecting members (4) are provided, and the two first connecting members (4) are respectively vertically arranged on the left and right sides between the thigh sleeve (1) and the calf sleeve (2), and the two ends of each first connecting member (4) are respectively connected to the corresponding sides of the thigh sleeve (1) and the calf sleeve (2).
3. The traction knee-ankle-foot orthosis according to claim 1, characterized in that: Two second connecting members (5) are provided. The second connecting members (5) are vertically arranged on the left and right sides between the calf sleeve (2) and the foot rest (3). The upper end of the second connecting member (5) is connected to the corresponding side of the lower end of the calf sleeve (2), and the lower end of the second connecting member (5) is rotatably connected to the corresponding side of the rear end of the foot rest (3).
4. The traction-type knee-ankle-foot orthosis according to claim 1, characterized in that: The angle adjustment member (6) comprises a support seat (61) and two length adjustment members (62). The support seat (61) is a U-shaped member. The support seat (61) is horizontally arranged with its notch facing forward. The upper end of the calf sleeve (2) is located in the groove of the support seat (61) and is connected to the end of the support seat (61) away from the notch. The two length adjustment members (62) are vertically arranged and spaced apart in the left and right directions. The upper end of each length adjustment member (62) is connected to the corresponding end of the support seat (61) in a forward and backward swinging manner. The lower end of each length adjustment member (62) is connected to the middle part of the corresponding side of the foot rest (3) in a forward and backward swinging manner. The lengths of the two length adjustment members (62) are adjusted to adjust the vertical inclination angle of the foot rest (3) relative to the calf sleeve (2).
5. The traction-type knee-ankle-foot orthosis according to claim 4, characterized in that: The length adjusting member (62) is a turnbuckle bolt.
6. The traction knee-ankle-foot orthosis according to claim 1, characterized in that: The thigh sleeve (1) and the calf sleeve (2) are both tubular members with an open front, and binding members (7) are provided at the open fronts of the thigh sleeve (1) and the calf sleeve (2) and at the upper rear end of the foot rest (3).
7. The traction knee-ankle-foot orthosis according to claim 6, characterized in that: A plurality of binding members (7) are arranged at intervals in the vertical direction on the thigh sleeve (1) and the calf sleeve (2).
8. The traction knee-ankle-foot orthosis according to claim 1, characterized in that: The thigh sleeve (1), the calf sleeve (2) and the foot rest (3) are all made of plastic.
9. The traction knee-ankle-foot orthosis according to claim 1, characterized in that: The footrest (3) is in the shape of a shoe sole, and a skirt (31) is provided at its edge protruding upward.
10. The traction knee-ankle-foot orthosis according to claim 9, characterized in that: A flexible cushion layer (32) is also provided in the footrest (3).