A rehabilitation device for knee joint range of motion training

Abstract

The present invention belongs to the technical field of medical auxiliary rehabilitation equipment, and specifically relates to a rehabilitation device for knee joint range of motion training, which can be used for knee joint range of motion rehabilitation training after knee replacement surgery. The rehabilitation device described in the present invention uses the rehabilitation device body bracket to make the pulleys present a continuous arc arrangement, ensuring that when the patient moves to the extreme position of the knee joint, at least two groups of pulleys are still in contact with the ground, and the height difference between the pulleys is used to ensure the resistance-free movement of the pulleys. Therefore, when the patient reaches the maximum knee extension angle and / or knee flexion angle, the patient will not suffer joint injuries due to poor control or improper exercise; moreover, since the patient does not need to exert excessive force, the patient's rehabilitation exercise time can also be extended, further enhancing the effect of knee joint range of motion exercise.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical auxiliary rehabilitation equipment, and specifically relates to a rehabilitation device for knee joint range of motion training, which can be used for knee joint range of motion rehabilitation training after knee replacement surgery. Background Art

[0002] Total knee replacement is the main treatment for end-stage knee osteoarthritis. It can significantly relieve pain, improve knee function, and significantly improve quality of life. However, the surgical trauma caused by total knee replacement can lead to inflammatory reactions in the soft tissues within the knee joint cavity and around the wound, and then cause pain and swelling, affecting the patient's early postoperative functional exercise process and directly affecting the long-term knee function and quality of life of the patient. This requires patients to perform active and effective knee joint functional exercises as soon as possible after surgery to avoid knee adhesion problems. Therefore, patients need to try their best to overcome pain, swelling and other discomforts after surgery, and perform active functional exercises as soon as possible to ensure the recovery of the knee joint after surgery.

[0003] At present, postoperative rehabilitation of knee replacement usually uses CPM to assist passive knee movement to restore the range of motion of the knee joint. Although CPM can achieve a certain degree of knee flexion accuracy, it provides patients with rigid, passive rehabilitation exercises, which usually cause patients to feel severe pain or cause secondary damage to the patient's knee joint; at the same time, passive movement using equipment usually cannot meet the patient's limb muscle strength training requirements in the later stage of rehabilitation, and is not easy to recover.

[0004] Many rehabilitation devices have been developed in the prior art to complete knee range of motion training for patients after knee replacement surgery. However, most rehabilitation devices occupy a large area and can only be used for rehabilitation training in designated areas, which is not suitable for knee range of motion rehabilitation training for patients in the early postoperative period.

[0005] At present, the most common method for early knee range of motion rehabilitation training for postoperative patients is to train them while they are sitting. Usually, the patient sits on the edge of the bed with his legs hanging naturally. The patient uses the quadriceps to straighten the knee as much as possible to exercise the knee extension function, and uses the quadriceps to bend the knee as much as possible to exercise the knee flexion function. However, on the one hand, patients are prone to pain and affect active force training; at the same time, due to the limitation of body position, the range of motion of the patient's knee joint can usually only reach about 70°, which makes it difficult to ensure the effective rehabilitation of the patient after surgery. Summary of the invention

[0006] Therefore, the technical problem to be solved by the present invention is to provide a rehabilitation device for knee joint range of motion training, so as to solve the problem in the prior art that the intensity and effect of postoperative knee joint range of motion training for patients are not ideal.

[0007] In order to solve the above technical problems, the present invention provides a rehabilitation device for knee joint range of motion training, including a rehabilitation device body bracket, the top of the rehabilitation device body bracket is in contact with the patient's foot and is fixed to the patient's foot through a set fixing component, and the bottom end of the rehabilitation device body bracket is provided with a sliding component, and the sliding components are arranged continuously, so that the rehabilitation device body can achieve continuous and resistance-free sliding of the patient's legs relative to the ground.

[0008] The sliding component is a pulley.

[0009] The pulleys are arranged in an arc shape along the bottom end of the rehabilitation device body support, so that when the rehabilitation device moves along the patient's legs to the extreme position, at least two groups of the pulleys are in contact with the ground.

[0010] The pulley is connected to the rehabilitation device body support through a connecting rod.

[0011] The longitudinal cross-section of the rehabilitation device body support along the movement direction of the patient's legs is boat-shaped or arc-shaped.

[0012] The transverse cross-section of the rehabilitation device body support along the direction of movement of the patient's legs is square, rectangular or an arc with pointed ends.

[0013] The fixing assembly comprises a limiting shoe cover suitable for accommodating the patient's foot, and the patient's foot is inserted into the limiting shoe cover to be fixed to the rehabilitation device.

[0014] The position-limiting shoe cover is provided with a position-limiting component corresponding to the heel position of the patient's foot, which is used to adjust the size of the position-limiting shoe cover.

[0015] The rehabilitation device body support is also provided with a strap component at a position corresponding to the heel of the patient's foot, which is used to fix the patient's foot to the rehabilitation device.

[0016] The limiting component and / or the binding strap component are snap buckles, Velcro or binding straps.

[0017] The rehabilitation device for knee joint range of motion training described in the present invention is optimized and designed based on the structure of "roller shoes" in the prior art. After the patient puts on the rehabilitation device, the quadriceps muscle is used to drive the rehabilitation device to move, thereby driving the knee joint to straighten. During the exercise, the rehabilitation device, driven by the pulley, can save the patient a lot of physical energy while ensuring the range of motion as much as possible. With the inertial assistance of the pulley of the rehabilitation device, the patient can complete the knee joint range of motion exercises with as little effort as possible, avoiding the hidden danger of postoperative tissue adhesion, and achieving a powerful effect of combining active and passive exercise.

[0018] The rehabilitation device described in the present invention is optimized and designed based on the structure of the "roller shoes" in the prior art. The rehabilitation device body bracket allows the pulleys to be arranged in a continuous arc surface, ensuring that when the patient moves to the extreme position of the knee joint, at least two groups of pulleys are still in contact with the ground. The height difference between the pulleys is used to ensure resistance-free movement of the pulleys. Therefore, when the patient reaches the maximum knee extension angle and (or) knee flexion angle, the patient will not suffer joint injuries due to poor control or improper exercise. Moreover, since the patient does not need to exert excessive force, the patient's rehabilitation exercise time can also be extended, further enhancing the effect of knee joint range of motion exercise.

[0019] The limiting components and strap components provided in the rehabilitation device of the present invention further strengthen the connection and fixation between the patient's foot and the rehabilitation device, further ensuring the safety of the patient during use; moreover, the rehabilitation device occupies a small area, and the patient can perform exercise exercises at the bedside without having to go to a specific venue for rehabilitation training, which is convenient for the patient's daily rehabilitation and also helps to increase the number and effect of training. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 It is a schematic diagram of the structure of the rehabilitation device of the present invention;

[0022] The reference numerals in the figure are as follows: 1-rehabilitation device body support, 2-pulley, 3-limiting shoe cover, 4-limiting component, 5-binding component, 6-connecting rod. DETAILED DESCRIPTION

[0023] like Figure 1As shown, the rehabilitation device for knee joint range of motion training described in the present invention includes a rehabilitation device body bracket 1, the top of the rehabilitation device body bracket 1 is in contact with the patient's foot, and is fixed to the patient's foot by a set fixing component; a sliding component is provided at the bottom end of the rehabilitation device body bracket 1, and each of the sliding components is arranged continuously, so that the rehabilitation device body 1 can achieve continuous and resistance-free sliding of the patient's legs relative to the ground.

[0024] like Figure 1 In the structure shown, the sliding component of the rehabilitation device body support 1 in the present invention is preferably configured as a pulley 2, and the pulleys 2 are arranged in groups of two and symmetrically arranged along the two sides of the rehabilitation device body support 1. The pulleys 2 can be directly fixed to the bottom side of the rehabilitation device body support 1 through a connecting piece, and can also be connected to the bottom surface of the rehabilitation device body support 1 through a connecting rod 6.

[0025] In the rehabilitation device for knee joint range of motion training described in the present invention, each pulley 2 is arranged in an arc surface along the bottom end of the rehabilitation device body support 1, so that when the rehabilitation device moves along the patient's legs to the extreme position (when the maximum knee joint extension angle and / or knee joint flexion angle is reached), at least two groups of the pulleys 2 are in contact with the ground, and there is a smooth transition between the pulleys 2 to avoid joint injuries caused by poor control or improper exercise of the patient when the legs move back and forth.

[0026] As an alternative, the longitudinal cross-section of the rehabilitation device body support 1 along the patient's leg movement direction is boat-shaped or arc-shaped, and the pulley 2 can be directly arranged along the bottom end surface of the rehabilitation device body support 1 to form a motion curve with an arc surface structure.

[0027] Furthermore, the transverse cross-section of the rehabilitation device body support 1 along the direction of movement of the patient's legs can be a shape suitable for accommodating the patient's feet, preferably a square, rectangular or arc-shaped with pointed ends, preferably a minimum volume shape suitable for fixing the feet.

[0028] like Figure 1 The structure described above, in the rehabilitation device for knee joint range of motion training described in the present invention, the fixing assembly includes a limiting shoe cover 3 suitable for accommodating the patient's foot, and the patient's foot is inserted into the limiting shoe cover 3 to achieve connection and fixation with the rehabilitation device. In order to make the size of the limiting shoe cover 3 more suitable for the patient's foot size, the limiting shoe cover 3 is provided with a limiting component 4 at the position corresponding to the heel of the patient's foot, which is used to adjust the size of the limiting shoe cover 3. The limiting component 4 can be a connecting buckle structure known in the prior art, such as a snap button, Velcro or a strap.

[0029] In order to further strengthen the connection and fixation between the patient's foot and the rehabilitation device, the rehabilitation device body support 1 is further provided with a strap component 5 at the position corresponding to the heel of the patient's foot, which is used to fix the patient's foot to the rehabilitation device. The strap component 5 can be a connecting buckle structure known in the prior art, such as a snap button, Velcro or a strap.

[0030] The specific use process of the rehabilitation device for knee joint range of motion training of the present invention is as follows:

[0031] After the patient's knee replacement surgery, according to the patient's tolerance, when the patient can sit on the bedside, the medical staff will help the patient sit on the chair; the medical staff will place the patient's heel on the surgical side in the limiting shoe cover 3, and adjust the limiting component 4 so that the fixed size of the limiting shoe cover 3 is suitable for the patient's foot size, and fix the limiting component 4 to complete the fixation of the foot position; then adjust the length of the strap component 5 according to the thickness of the patient's ankle joint, so that one finger can be inserted, and connect and fix the strap component 5 to complete the installation and fixation of the rehabilitation device.

[0032] The medical staff guides the patient to use the rehabilitation device of the present invention, and the patient uses the quadriceps muscle to straighten the knee joint as much as possible to exercise the knee extension function, and then uses the quadriceps muscle to bend the knee joint as much as possible to exercise the knee flexion function. With the inertial assistance of the pulley 2 of the rehabilitation device, the patient can complete the knee joint range of motion exercise with as little effort as possible, avoiding the hidden danger of postoperative tissue adhesion. Moreover, since the patient does not need to exert excessive force, the patient's rehabilitation exercise time can also be extended, further enhancing the effect of the knee joint range of motion exercise.

[0033] When the patient has finished using the device, the medical staff can remove the rehabilitation device from the patient's foot. When a patient has finished using the device, the medical staff can disinfect the exerciser body as a cloth article for next use.

[0034] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A rehabilitation device for early knee joint range of motion training after total knee replacement, characterized in that: The rehabilitation device comprises a main body support (1), the top end of the main body support (1) contacts the patient's foot and is fixed to the patient's foot through a fixed component, the bottom end of the main body support (1) is provided with a pulley (2), and the pulleys (2) are arranged continuously, so that the main body (1) of the rehabilitation device can achieve continuous and resistance-free sliding of the patient's leg relative to the ground; The pulleys (2) are arranged in an arc shape along the bottom end of the rehabilitation device body support (1), so that when the rehabilitation device moves along the patient's legs to an extreme position, at least two groups of the pulleys (2) are in contact with the ground; The pulley (2) is connected to the rehabilitation device body support (1) via a connecting rod (6); The longitudinal cross-section of the rehabilitation device body support (1) along the direction of movement of the patient's legs is boat-shaped or arc-shaped; The transverse cross-section of the rehabilitation device body support (1) along the direction of movement of the patient's legs is square, rectangular or an arc with two pointed ends; The fixing assembly comprises a limiting shoe cover (3) suitable for accommodating the patient's foot, and the patient's foot is inserted into the limiting shoe cover (3) to achieve fixation with the rehabilitation device; The position-limiting shoe cover (3) is provided with a position-limiting component (4) corresponding to the position of the heel of the patient's foot, and is used to adjust the size of the position-limiting shoe cover (3); The rehabilitation device body support (1) is also provided with a strap component (5) at a position corresponding to the heel of the patient's foot, for fixing the patient's foot to the rehabilitation device; The limiting component (4) and / or the binding component (5) are snap fasteners, hook and loop fasteners or binding tapes.

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