Knee joint traction corrector

Abstract

The utility model discloses a knee joint traction corrector which comprises a bottom plate, a thigh supporting plate and a shank supporting plate which are hinged together are arranged on the bottom plate, a U-shaped thigh clamping plate is arranged on the thigh supporting plate, a thigh profiling cushion is arranged on the inner side of the U-shaped thigh clamping plate, and a thigh binding belt is arranged on the U-shaped thigh clamping plate. A U-shaped shank clamping plate capable of sliding up and down and rotating is installed on the shank supporting plate, a shank profiling cushion is arranged on the inner side of the U-shaped shank clamping plate, a shank binding belt is arranged on the U-shaped shank clamping plate, and the lower end of the U-shaped shank clamping plate is connected with a traction rope. The rehabilitation device is reasonable in structure, knee joint flexion and extension angles and shank rotation angles can be adjusted, and rehabilitation requirements of patients with different physical conditions can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of orthopedic medical instruments, in particular to a knee joint traction corrector. Background Art

[0002] Due to various reasons, such as weight, trauma, strain, age or disease, knee pain, deformation, and even osteoarthritis with narrowed joint space may occur. It usually causes knee pain, swelling, morning stiffness, joint deformation and limited movement. It causes tension in the soft tissues around the knee joint and narrowing of the joint space. In this case, traction therapy becomes an effective means to treat knee joint lesions. Traction is a method to treat loose knee joints. It stretches the muscles and soft tissues around the joints, increases the joint space and range of motion, corrects deformities and relieves pain. When performing traction therapy, it is important to adopt the correct traction posture. When the joint is in flexion, the joint is in a loose state, the ligaments around the joint are in a relaxed state, which is easier to traction, and the muscles are in a tense contraction state, which is helpful for muscle traction exercise; clinically, most knee joint diseases have joint alignment disorders. When the knee joint is in flexion, there is a certain rotational activity between the tibial plateau and the femur. By fine-tuning the rotation angle of the tibia, the joint alignment between the tibia and the femur of the knee joint can be adjusted, so as to adjust the functional alignment of the knee joint and restore the knee joint activity according to different dislocations of the knee joint.

[0003] In the prior art, only vertical traction of the knee joint is emphasized, while the rotational movement between the tibial plateau and the femur in the knee flexion and extension state in the knee joint movement anatomy is ignored. Most of the existing knee traction correctors have complex structures and poor adjustment capabilities, and cannot be adjusted according to the rehabilitation needs of patients with different physical conditions. Utility Model Content

[0004] The utility model aims to provide a knee joint traction corrector, which has a reasonable structure, can adjust the knee joint flexion and extension angle and the calf rotation angle, and can meet the needs of rehabilitation treatment for patients with different physical conditions.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a knee joint traction corrector, which includes a base plate and a support plate, the support plate is composed of a thigh support plate and a calf support plate hinged together, the upper end of the thigh support plate is hinged to the upper end of the base plate, the lower end of the calf support plate is slidably connected to the lower part of the base plate, and the lower end of the calf support plate is provided with a flexion and extension locking mechanism for fixing the lower end of the calf support plate to the base plate; a U-shaped thigh clamping plate is provided on the thigh support plate, and a thigh contour cushion is provided on the inner side of the U-shaped thigh clamping plate. The thigh clamping plate is provided with a thigh binding belt, the calf support plate is provided with a rectangular window, a sliding support plate that can slide up and down is installed in the rectangular window, a plurality of arc-shaped slide rail brackets are arranged on the sliding support plate, a U-shaped calf clamping plate is rotatably installed on the arc-shaped slide rail bracket through a sliding connector, a corner locking mechanism is provided on one or both sides of the U-shaped calf clamping plate, a calf contouring cushion is provided on the inner side of the U-shaped calf clamping plate, a calf binding belt is provided on the U-shaped calf clamping plate, and a traction rope is connected to the lower end of the U-shaped calf clamping plate.

[0006] Preferably, a support groove for accommodating the thigh support and the calf support is provided on the bottom plate, and the upper end of the thigh support is hinged to the two sides of the upper end of the support groove through an upper pin shaft; step grooves are provided on both sides of the lower part of the support groove, and lower pin shafts extending into the step grooves are provided on both sides of the lower end of the calf support, and the flexion and extension locking mechanism is a knurled step hand screw threadedly connected to the end of the lower pin shaft.

[0007] Preferably, reinforcement plates are provided on both sides of the calf support plate, and the angle locking mechanism includes two angle adjustment ear plates fixedly connected to the reinforcement plate, the angle adjustment ear plates are provided with waist holes, and the sliding support plate at the corresponding position of the angle adjustment ear plates is provided with a screw rod, the upper end of the screw rod is inserted into the corresponding waist hole and the angle adjustment nut is screwed on its upper end.

[0008] Preferably, the utility model further comprises a traction frame for hanging a traction rope and a weight.

[0009] Preferably, the arc-shaped slide rail bracket comprises an arc-shaped slide rod, and both ends of the arc-shaped slide rod are vertical rods connected to the sliding support plate.

[0010] Preferably, the U-shaped thigh clamping plate and the U-shaped calf clamping plate are made of PVC plastic plates.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model comprises a bottom plate and a support plate, the support plate consists of a thigh support plate and a calf support plate hinged together, the upper end of the thigh support plate is hinged to the upper end of the bottom plate, the lower end of the calf support plate is slidably connected to the lower part of the bottom plate, and the lower end of the calf support plate is provided with a flexion and extension locking mechanism for fixing the lower end of the calf support plate to the bottom plate; the flexion and extension locking mechanism can fix the lower end of the calf support plate at a suitable position of the bottom plate to achieve angle fixation between the thigh support plate and the calf support plate, thereby adjusting the flexion and extension angle of the patient's knee joint; a rectangular window is provided on the calf support plate, and a sliding support plate that can slide up and down is installed in the rectangular window, a plurality of arc-shaped slide rail brackets are provided on the sliding support plate, a U-shaped calf clamping plate is rotatably installed on the arc-shaped slide rail bracket, and a rotation angle locking mechanism is provided on one side or both sides of the U-shaped calf clamping plate; by adjusting the rotation angle locking mechanism, the rotation angle of the U-shaped calf clamping plate can be adjusted and fixed, thereby adjusting the rotation angle of the patient's calf;

[0013] The utility model is convenient for adjusting the flexion and extension angle of the knee joint and the rotation angle of the calf, and can meet the needs of rehabilitation treatment of patients with different physical conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0015] Figure 1 This is a three-dimensional structural diagram of the knee joint traction corrector of the utility model in use;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the knee joint traction corrector of the utility model;

[0017] Figure 3 for Figure 2 A magnified view of the structure of part A;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the bottom plate of the utility model;

[0019] Figure 5 It is a three-dimensional structural schematic diagram of the calf support plate and the sliding support plate of the utility model;

[0020] Figure 6 The utility model is a three-dimensional structural schematic diagram of the U-shaped calf clamping plate and the calf contouring cushion.

[0021] In the figure: 1-bottom plate, 2-support plate groove, 3-thigh support plate, 4-calf support plate, 5-U-shaped thigh clamping plate, 6-thigh contour cushion, 7-thigh binding belt, 8-rectangular window, 9-sliding support plate, 10-arc slide rail bracket, 11-arc slide bar, 12-vertical pole, 13-U-shaped calf clamping plate, 14-calf contour cushion, 15-calf binding belt, 16-traction rope, 17-upper pin, 18-step notch, 19-lower pin, 20-knurled step hand screw, 21-reinforcement plate, 22-angle adjustment ear plate, 23-waist hole, 24-screw, 25-angle adjustment nut, 26-weight, 27-traction frame, 28-sliding connector. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiment is only one embodiment of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that all directional indications (such as up, down, inside, outside...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0024] See also Figures 1 to 6A knee joint traction corrector comprises a bottom plate 1 and a support plate, wherein the support plate is composed of a thigh support plate 3 and a calf support plate 4 which are hinged together. A support plate groove 2 for accommodating the thigh support plate 3 and the calf support plate 4 is provided on the bottom plate 1, and the upper end of the thigh support plate 3 is hinged to both sides of the upper end of the support plate groove 2 through an upper pin shaft 17; both sides of the lower part of the support plate groove 2 are provided with step notches 18, and both sides of the lower end of the calf support plate 4 are provided with lower pin shafts 19 which extend into the step notches 18, and the lower end of the calf support plate 4 slides up and down along the step notch 18, so that the thigh support plate 3 and the calf support plate 4 can be adjusted. The connection angle between the plate 3 and the calf support plate 4 is that the knurled step hand screw 20 is threadedly connected to the outer end of the lower pin shaft 19. The knurled step hand screw 20 can be used as a flexion and extension locking mechanism to fix the lower end of the calf support plate 4 at a suitable position on the step groove 18, so as to achieve the angle fixation between the thigh support plate 3 and the calf support plate 4, thereby adjusting the flexion and extension angle of the patient's knee joint; a U-shaped thigh clamping plate 5 is arranged on the thigh support plate 3, and a thigh contour cushion 6 is arranged on the inner side of the U-shaped thigh clamping plate 5, and two thigh binding straps 7 are arranged on the U-shaped thigh clamping plate 5. A rectangular window 8 is provided on the support plate 4, and a sliding support plate 9 that can slide up and down is installed in the rectangular window 8. Four arc-shaped slide rail brackets 10 composed of an arc-shaped slide rod 11 and vertical rods 12 at both ends of the arc-shaped slide rod 11 are fixedly installed on the sliding support plate 9. A U-shaped calf clamping plate 13 is rotatably installed on the arc-shaped slide rods 11 of the four arc-shaped slide rail brackets 10 through a sliding connection 28. A calf profiling soft pad 14 is provided on the inner side of the U-shaped calf clamping plate 13. Three calf binding straps 15 are provided on the U-shaped calf clamping plate 13. The U-shaped calf clamping plate 13 is connected to a traction rope 16 at its end; reinforcement plates 21 are provided on both sides of the U-shaped calf clamping plate 13, and two angle adjustment ear plates 22 are fixedly connected to the two reinforcement plates 21, and the angle adjustment ear plates 22 are provided with waist holes 23, and a screw rod 24 is provided on the sliding support plate 9 at the corresponding position of the angle adjustment ear plates 22, and the upper end of the screw rod 24 is inserted into the corresponding waist hole 23 and the angle adjustment nut 25 is screwed on its upper end; by adjusting the four angle adjustment nuts 25, the rotation angle of the U-shaped calf clamping plate 13 can be adjusted and fixed, thereby adjusting the rotation angle of the patient's calf. The utility model also includes a traction frame 27 for hanging the traction rope 16 and the weight 26.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A knee joint traction corrector, comprising a base plate and a support plate, wherein the support plate is composed of a thigh support plate and a calf support plate hinged together, wherein the upper end of the thigh support plate is hinged to the upper end of the base plate, the lower end of the calf support plate is slidably connected to the lower part of the base plate, and a flexion and extension locking mechanism is provided at the lower end of the calf support plate to fix the lower end of the calf support plate to the base plate; characterized in that: The U-shaped thigh clamping plate is arranged on the thigh support plate, a thigh contour pad is arranged on the inner side of the U-shaped thigh clamping plate, a thigh binding belt is arranged on the U-shaped thigh clamping plate, a rectangular window is arranged on the calf support plate, a sliding support plate that can slide up and down is installed in the rectangular window, a plurality of arc-shaped slide rail brackets are arranged on the sliding support plate, the U-shaped calf clamping plate is rotatably installed on the arc-shaped slide rail bracket through a sliding connecting piece, a corner locking mechanism is arranged on one or both sides of the U-shaped calf clamping plate, a calf contour pad is arranged on the inner side of the U-shaped calf clamping plate, a calf binding belt is arranged on the U-shaped calf clamping plate, and a traction rope is connected to the lower end of the U-shaped calf clamping plate.

2. The knee joint traction orthosis according to claim 1, characterized in that: A support groove for accommodating the thigh support and the calf support is provided on the bottom plate, and the upper end of the thigh support is hinged to the two sides of the upper end of the support groove through an upper pin shaft; step grooves are provided on both sides of the lower part of the support groove, and lower pin shafts extending into the step grooves are provided on both sides of the lower end of the calf support plate. The flexion and extension locking mechanism is a knurled step hand screw threadedly connected to the end of the lower pin shaft.

3. The knee joint traction orthosis according to claim 2, characterized in that: Reinforcement plates are provided on both sides of the calf support plate, and the angle locking mechanism includes two angle adjustment ear plates fixedly connected to the reinforcement plate, the angle adjustment ear plates are provided with waist holes, and a screw rod is provided on the sliding support plate at the corresponding position of the angle adjustment ear plate, and the upper end of the screw rod is inserted into the corresponding waist hole and the angle adjustment nut is screwed on its upper end.

4. The knee joint traction orthosis according to claim 3, characterized in that: It also includes a towing frame for hanging the towing rope and the weight.

5. The knee joint traction orthosis according to any one of claims 1 to 4, characterized in that: The arc-shaped slide rail bracket comprises an arc-shaped slide rod, and both ends of the arc-shaped slide rod are vertical rods connected to the slide support plate.

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