CN105963106B - The knee joint mechanism of decompressor - Google Patents

Abstract

The invention provides a knee joint decompression mechanism. Including straps, lumbar support and the first buckle, the spring connection seat is fixed and riveted on both sides of the lumbar support, the upper tension device is connected with the connection seat through the first connection belt and the second lock buckle, and the lower tension device is connected through the second The connecting belt is fixedly connected with the upper leg support, and the middle parts of both sides of the lower stretching device are sewn with Velcro. The upper stretching device and the lower stretching device are connected by their internal springs. When the spring stretches, the upper stretching device The upper stretching device is separated from the lower stretching device and the upper stretching device moves upward. The upper and lower leg supports of the knee joint are connected to the knee joint fixing belt in a cross shape, and the lower limb fixing belt is fixed on the lower leg support. The present invention is comfortable and convenient to wear, and the upper leg rest is in close contact with the upper side of the patient's knee joint, without long-distance sliding, so under the action of pulling force and restoring force, the upper leg rest tends to move upwards, thereby achieving Increase the knee joint space, reduce joint pressure and reduce the effect of joint wear.

Description

Knee Joint Decompression Mechanism

technical field

The invention relates to a knee joint treatment and rehabilitation device, in particular to a knee joint decompression mechanism.

Background technique

The knee joint is the largest and most complex joint in the human body. It bears a lot of weight and does a lot of exercise. It is the hub of lower limb activities, so its incidence rate ranks first among all joints. Among them, knee osteoarthritis is a disease with high incidence in middle-aged and elderly people. Studies have shown that excessive joint pressure is one of the main reasons for inducing or accelerating articular cartilage wear, meniscus injury, tibial plateau fracture, and avascular necrosis of the tibial node. , and joint loosening can reduce joint pressure, avoid aggravating the shearing and wear of joint soft tissue, and provide space and environment for the self-repair of soft tissue in the joint cavity, so reducing joint pressure and increasing joint space is the key to the treatment of knee osteoarthritis important way.

There are two types of knee joint decompression mechanisms: fixed and portable. At present, most of the knee joint decompression mechanisms are fixed stretching and decompression mechanisms. The portable knee joint stretching and decompression mechanism is convenient for patients to use anytime and anywhere, and can produce walking aid function when the patient is walking. In addition, the portable knee joint stretching and decompression mechanism is mainly divided into mechanical force boosting device and pneumatic and hydraulic force boosting device. .

Chinese Patent Publication No. CN 104873314 A, published on September 2, 2015, the name of the invention is a simple knee orthotic device, the application discloses a knee orthosis consisting of a thigh support, a calf support and both Connecting mechanism (four-bar mechanism). The connection mechanism that transforms the extension motion of the sagittal plane of the knee joint into the upward linear movement of the thigh support, and uses the orthotic calf support fixed with the calf as the fulcrum of force, and can pull the upper part of the knee joint upward when the lower limbs are stretched to achieve alignment. Stretching purposes for the knee joint. Its disadvantage is that it can only be stretched during stretching, but studies have shown that during knee flexion, as the knee flexion angle increases, the gap will also decrease. In addition, due to the limitation of the size of the knee joint and the length of the thigh, the stroke is limited. When the non-working angle of the knee joint is more than 90° of flexion, the thigh support will also be pushed up, affecting the normal flexion of the wearer, and the coupling with the human body is poor.

Contents of the invention

The problem to be solved by the present invention is to provide a knee joint that is comfortable and convenient to wear, does not affect normal walking, has adjustable tensile force, and can increase the joint space, reduce joint pressure and reduce joint wear during the knee joint flexion and extension process. Pressure reducing mechanism.

To achieve the above object, the present invention provides the following technical solutions:

A knee joint decompression mechanism, characterized in that it includes a waist support, a first connecting belt, an upper stretching device, a spring, a lower stretching device, a second connecting belt, an upper leg support, a lower leg support, a knee joint The fixing belt and the lower limb fixing belt, the two sides of the waist support are respectively fixed with straps and the first buckle, and two connection seats are fixed and riveted on the waist support, the connection seats have buttonholes, and one end of the first connection belt is connected with the The upper stretching device is connected, the other end has a second lock, and is connected to the connecting seat through the second lock and button hole, and the two ends of the spring are respectively connected with the upper stretching device and the lower stretching device, so The lower stretching device is fixedly connected to the upper leg support through the second connecting belt, and Velcro is sewn on both sides of the lower stretching device, and the upper leg support and the lower leg support are connected with the cross-shaped knee joint fixing belt. connection, the lower body strap is fixed on the lower leg rest.

Preferably, the straps and the first buckle are stitched or fixedly riveted on both sides of the waist support.

Preferably, the buttonholes on the connecting seat are multi-level.

Preferably, the shape of the upper stretching device and the lower stretching device adopts curved surface design and is made of high elastic polymer material. The upper stretching device is equipped with a plurality of first hooks, and the bottom of the lower stretching device is equipped with a plurality of first hooks. Two hooks, and the first hook and the second hook correspond to each other in the vertical direction, and the two ends of the spring are respectively connected with the first hook and the second hook.

Preferably, the upper leg support and the lower leg support are designed with curved surfaces, are in the shape of strips, and are made of engineering plastics, and the knee joint fixing belt uses elastic belts.

Preferably, the outer side of the strap and the lumbar support are made of hard leather, and the inner side is lined with soft material. The lower limbs are fixed with elastic bands.

Preferably, the upper stretching device, the first connecting belt, and the second connecting belt are connected with the lower stretching device, the upper leg support, the lower leg support and the lower limb fixing belt respectively by riveting.

Compared with the prior art, the beneficial effects of the present invention are: the knee joint decompression mechanism adopts an open design, all the support brackets and velvet pads can be disassembled, comfortable and breathable, easy to wear, and the spring is a flexible mechanism, which works with the The coupling of the human body is good and will not restrict the normal movement of the human body; this mechanism stretches the leg support on the upper side of the knee joint through a spring stretching device to reduce joint pressure, and the operation is simple and convenient. The patient can adjust the stretching force according to their own conditions. In addition, the number of springs of the stretching device can also be selected according to the situation. The whole set of mechanisms is light in weight. It is convenient for patients to complete normal walking. Therefore, wearing the knee joint decompression mechanism can stretch the knee joint, reduce joint pressure and reduce joint wear and tear.

Description of drawings

Fig. 1 is the front view of the knee joint decompression mechanism of the present invention;

Fig. 2 is a side view of the knee joint decompression mechanism;

Fig. 3 is a schematic diagram of the stretching state of the stretching device.

In the picture:

1-strap, 2-waist support, 3-first lock, 4-connecting seat, 5-button hole, 6-second lock, 7-first connecting belt, 8-upper stretching device, 9- The first hook, 10-lower stretching device, 11-Velcro, 12-spring, 13-second hook, 14-second connecting belt, 15-upper leg support, 16-knee joint fixing belt, 17-lower Side leg rests, 18-leg fixation straps.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Referring to Figures 1, 2, and 3, the knee joint decompression mechanism of the present invention includes a lumbar support 2, a first connecting belt 7, an upper stretching device 8, a spring 12, a lower stretching device 10, and a second connecting belt 14 , upper side leg support 15, lower side leg support 17, knee joint fixing belt 16 and lower limb fixing belt 18, the two sides of described waist support 2 are respectively fixed with strap 1, the first buckle 3, on the waist support 2 both sides The connecting seat 4 is fixedly riveted, and the upper stretching device 8 is fixedly connected with the multi-stage button hole 5 on the connecting seat 4 through the first connecting band 7 and the second lock 6; the lower stretching device 10 is connected with the The upper leg support 15 is fixedly connected, and the middle part of the lower stretching device 10 is sewn with Velcro 11. The Velcro 11 ensures that the stretching device is always in contact with the patient's thigh during walking, so that the stretching device produced The force is parallel to the thigh without deviation. The upper stretching device 8 and the lower stretching device 10 are connected by their internal springs 12, wherein the upper stretching device 8 is equipped with a plurality of first hooks 9, and the bottom of the lower stretching device 10 is equipped with a plurality of second hooks 13, and the first hook 9 and the second hook 13 correspond to each other in the vertical direction, and the two ends of the spring 12 are connected with the first hook 9 and the second hook 13 respectively. When the spring 12 is stretched, the upper stretching device 8 is separated from the lower stretching device 10 and the upper stretching device 8 moves upward. Knee joint upper side leg support 15, lower side leg support 17 are connected with cross-shaped knee joint fixing belt 16, and lower limb fixing belt 18 is fixed on lower side leg supporting 17 both sides, and lower limb fixing belt 18 is worn on patient's sole, is in pull. In a tight state, both the knee joint fixing belt 16 and the lower limb fixing belt 18 ensure that the upper leg support 15 and the lower leg support 17 do not slide for a long distance during walking.

During use, the patient can select the number or stretching length of the spring 12 according to the degree of injury of the knee joint. In a specific embodiment, the connecting seat 4 on the waist support 2 has multi-level buttonholes 5, connecting the second lock 6 to different levels of buttonholes will produce different tensile forces, and the upper stretching device 8 is equipped with a plurality of first A hook 9, a plurality of second hooks 13 are installed at the bottom of the lower stretching device 10, and the patient can select the number of springs 12 according to the actual situation. This knee joint decompression mechanism utilizes the spring 12 stretching to generate adjustable tension or restoring force. Because the upper side leg support 15 is in close contact with the upper side of the patient's knee joint, the knee joint fixing belt 16 and the lower limb fixing belt 18 are guaranteed The upper leg rest 15 and the lower leg rest 17 do not slide for a long distance during walking. Under the action of tension and restoring force, the upper leg rest 15 tends to move upwards, thereby increasing the knee joint gap and reducing the Effects of joint stress.

In this embodiment, the shape of the upper stretching device 8 and the lower stretching device 10 is designed with a curved surface in order to make the stretching device better contact with the patient's thigh and improve the coupling. They are made of high elastic polymer materials, such as Rubber and the like, the purpose is to reduce the quality of the mechanism and improve the wearing comfort of the human body. The upper leg support 15 and the lower leg support 17 adopt curved surface design, are in the shape of strips, and are made of engineering plastics. The knee joint fixing belt 16 and the lower limb fixing belt 18 all use elastic belts to ensure that they can be in tension during work. state.

In this embodiment, the outer side of the strap 1 and the lumbar support 2 are made of hard leather, and the inner side is lined with a soft material. The soft material on the inner side is used to make the patient comfortable to wear, and the outer hard leather makes the lumbar support 2 firm and firm. Flexible materials can be high-grade medical cotton, sponge pads, etc.

In this embodiment, the upper stretching device 8, the first connecting belt 7, and the second connecting belt 14 are respectively connected with the lower stretching device 10, the upper leg support 15, the lower leg support 17 and the lower limb fixing belt 18. All are connected by fixed riveting.

In the description of the present invention, the terms "movable connection", "fixed" and "connection" that are not specifically explained should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral ground connection; it can be a direct connection or an indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Although some embodiments of the present invention have been given herein, those skilled in the art should understand that the embodiments herein can be changed without departing from the spirit of the present invention. The above-mentioned embodiments are only exemplary, and the embodiments herein should not be used as limitations on the scope of rights of the present invention.

Claims (7)

1. A kind of 1. knee joint mechanism of decompressor, it is characterised in that including waist support (2), the first connect band (7), upper stretching device (8), Spring (12), lower stretching device (10), the second connect band (14), upside leg support (15), downside leg support (17), knee brace (16) and lower limb fixing band (18), waist support (2) both sides are respectively fixed with bandage (1), the first lock (3), in waist support (2) Fixed riveting has two connecting seats (4), has button hole (5) on connecting seat (4), and one end of the first connect band (7) fills with upper stretching (8) connection is put, the other end has the second lock (6) and is connected by the described second lock (6), button hole (5) with connecting seat (4), The both ends of the spring (12) are connected with upper stretching device (8), lower stretching device (10) respectively, and the lower stretching device (10) is logical Cross the second connect band (14) to be fixedly connected with upside leg support (15), and the middle side part of lower stretching device (10) two is sewed with VELCRO (11), upside leg support (15), downside leg support (17) are connected with criss-cross knee brace (16), lower limb fixing band (18) it is fixed in downside leg support (17), when in use, is incited somebody to action by described knee brace (16), lower limb fixing band (18) Upside leg support (15), downside leg support (17) and human body fastening are bound, and the spring (12) is in extended state.
2. 2. the knee joint mechanism of decompressor according to claim 1, it is characterised in that the bandage (1), the first lock (3) seam Close or fixation is riveted on waist support (2) both sides.
3. 3. the knee joint mechanism of decompressor according to claim 1, it is characterised in that the button hole (5) on the connecting seat (4) is It is multistage.
4. 4. the knee joint mechanism of decompressor according to claim 1, it is characterised in that the upper stretching device (8) and lower stretching Device (10) profile uses curved design, is made up of high resiliency polymeric material；Upper stretching device (8) is provided with multiple first hooks (9), lower stretching device (10) bottom is provided with multiple second hooks (13), and the first hook (9) is erecting with the second hook (13) Nogata is corresponded upwards, and spring (12) both ends are connected with the first hook (9) with the second hook (13) respectively.
5. 5. the knee joint mechanism of decompressor according to claim 1, it is characterised in that the upside leg support (15) and downside leg support (17) curved design is used, in strip, and material is engineering plastics, and knee brace (16) uses elastic webbing.
6. 6. the knee joint mechanism of decompressor according to claim 1, it is characterised in that the bandage (1), on the outside of waist support (2) with Hard leather does face, and inner side is lined with flexible material, and lower limb fixing band (18) uses elastic webbing.
7. 7. the knee joint mechanism of decompressor according to claim 1, it is characterised in that the upper stretching device (8) connects with first Tape splicing (7), the second connect band (14) are consolidated with lower stretching device (10) and upside leg support (15), downside leg support (17) with lower limb respectively Fixed band (18) is all connected using fixed riveting method.