Device for relieving spasm of both lower limbs in hemodialysis treatment
By designing a movable leg and foot support device, combined with a motor drive and buffer structure, the convenience of patients relieving lower limb spasms while in bed is solved, achieving safe and effective spasm relief without the need for movement during hemodialysis treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional devices for relieving lower limb spasms during hemodialysis treatment require patients to move to a specific device for treatment, which affects the treatment effect and may cause secondary damage. Furthermore, the fixed installation of the device can interfere with dialysis treatment.
A device comprising a U-shaped seat, a drive box, lower limb leg supports, and foot supports was designed. The movement of the lower limb leg supports and foot supports is driven by a motor, and combined with the cushioning effect of springs and buffer plates, it allows patients to bend and stretch their lower limbs on the bed, avoiding the inconvenience of moving and fixing the device.
It enables the relief of lower limb spasms while in bed, avoiding secondary injuries caused by patient movement and interference with dialysis treatment, thus improving treatment effectiveness and ease of use.
Smart Images

Figure CN224112964U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical recovery device technology, specifically a device for relieving spasms in both lower limbs during hemodialysis treatment. Background Technology
[0002] Hemodialysis is a common treatment for patients with kidney failure. It removes waste and excess fluid from the blood to maintain the body's electrolyte balance. Currently, hemodialysis treatment often causes spasms in the lower limbs. This is usually addressed with appropriate devices. Traditionally, these devices are placed on a bed to relieve lower limb spasms. However, after the hemodialysis session, the patient needs to be moved to a different bed, which is cumbersome and can cause further injury. Conversely, directly placing the patient on the bed with the device may be problematic due to its structure, making proper hemodialysis difficult and reducing its effectiveness.
[0003] Therefore, it is necessary to develop a device to relieve spasms in both lower limbs during hemodialysis treatment. Utility Model Content
[0004] The purpose of this invention is to provide a device for relieving spasms in both lower limbs during hemodialysis treatment, in order to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for relieving spasms of both lower limbs during hemodialysis treatment, comprising a bed, a U-shaped seat slidably connected to one side of the top of the bed, a drive box installed on the top of the U-shaped seat, a rotating shaft rotatably connected inside the drive box, and a lower limb leg support installed on one side of the top of the drive box;
[0006] A footrest is installed on one side of the outer wall of the lower limb leg support.
[0007] Preferably, the front and rear ends of the U-shaped seat are threaded with tightening screws, and a motor is installed on one side of the outer wall of the drive box. The output shaft of the motor is fixedly connected to one end of the rotating shaft through a coupling.
[0008] Preferably, a guide seat is installed on one side of the bottom center position of the lower limb leg support, and the outer wall of the guide seat is slidably connected to one side of the upper surface of the drive box.
[0009] Preferably, a movable seat is installed at the bottom of the guide seat, and the interior of the movable seat is threadedly connected to the outer wall of the rotating shaft.
[0010] Preferably, the lower limb leg support is provided with rollers at both the front and rear ends, the rollers are in contact with the upper surface of the drive box, and the upper surface of the lower limb leg support is provided with protective sponge.
[0011] Preferably, a buffer plate is installed on one side of the outer wall of the footrest, and guide posts are provided above and below one side of the outer wall of the buffer plate.
[0012] Preferably, the outer wall of the guide post is slidably connected to the inside of the footrest, a nut is threaded onto one side of the outer wall of the guide post, and a spring is provided on the other side of the outer wall of the guide post.
[0013] Preferably, an elastic band is provided on one outer wall of the buffer plate, and Velcro is provided on the surface of the elastic band.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] By sliding the buffer plate onto the footrest side of the lower limb leg rest via the guide post, and threadedly connecting the guide seat on the lower limb leg rest to the outer wall of the rotating shaft on the drive box, the system utilizes the elastic cushioning effect of the spring on the outer wall of the guide post. During hemodialysis, the patient's legs rest on the lower limb leg rest, and their feet rest on the buffer plate. The patient's feet are secured by elastic straps and Velcro on the buffer plate. The motor then drives the footrest to slowly move forward until the patient's lower limbs are in a bent position. During this process, the buffer plate and spring provide cushioning to prevent injury to the patient's lower limbs from excessive pushing force. The device flexes both lower limbs and then slowly retracts them, providing stretching relief. It is mounted on a U-shaped base that is detachable from the bed. This design ensures it doesn't interfere with hemodialysis treatment and allows for easy installation and use on the patient's bed. It minimizes the need for patients to move to the device after hemodialysis and avoids interference with hemodialysis treatment due to the fixed installation. This effectively improves the effectiveness of the device for relieving lower limb spasms during hemodialysis. Attached Figure Description
[0016] Figure 1 A schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a magnified schematic diagram of a selected portion of the structure provided by this utility model;
[0018] Figure 3 Provided by this utility model Figure 2 Enlarged view of the structure at point A in the image;
[0019] Figure 4 This is a partial exploded view of the structure provided by this utility model.
[0020] In the diagram: 1. Bed; 2. U-shaped seat; 201. Drive box; 202. Rotary shaft; 203. Tightening screw; 204. Motor; 3. Lower limb leg support; 301. Guide seat; 302. Moving seat; 303. Roller; 304. Protective sponge; 4. Footrest; 401. Buffer plate; 402. Guide column; 403. Nut; 404. Spring; 405. Elastic strap; 406. Velcro. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] This utility model provides the following technical solution: a device for relieving spasms in both lower limbs during hemodialysis treatment. Please refer to [link / reference]. Figures 1-4The system includes a bed 1, with a U-shaped seat 2 slidably connected to one side of the top of the bed 1. A drive box 201 is mounted on the top of the U-shaped seat 2, and a rotating shaft 202 is rotatably connected inside the drive box 201. Tightening screws 203 are threadedly connected to both the front and rear ends of the U-shaped seat 2. A motor 204 is mounted on one outer wall of the drive box 201, and the output shaft of the motor 204 is fixedly connected to one end of the rotating shaft 202 via a coupling. The U-shaped seat 2 is placed on the bed 1, and the tightening screws 203 are threadedly connected to the front and rear ends of the U-shaped seat 2 to secure it in place. After adjusting the U-shaped seat 2 to a suitable position, the tightening screws 203 are rotated until the tail end contacts the surface of the bed 1, thus fixing the U-shaped seat 2 in place. A lower limb leg rest 3 is mounted on one side of the top of the drive box 201, and a guide seat is mounted on one side of the bottom center of the lower limb leg rest 3. 301, the outer wall of the guide seat 301 is slidably connected to one side of the upper surface of the drive box 201. A movable seat 302 is installed at the bottom of the guide seat 301. The interior of the movable seat 302 is threadedly connected to the outer wall of the rotating shaft 202. Rollers 303 are provided at the front and rear ends of the bottom of the lower limb leg support 3. The rollers 303 contact the upper surface of the drive box 201. A protective sponge 304 is provided on the upper surface of the lower limb leg support 3. The guide seat 301 on the bottom of the lower limb leg support 3 is threadedly connected to the movable seat 302 at the outer wall of the rotating shaft 202 on the drive box 201. Multiple sets of rollers 303 on the bottom of the lower limb leg support 3 contact the surface of the drive box 201. According to the fixed connection between the output end of the motor 204 and the rotating shaft 202, the motor 204 drives and controls the rotating shaft 202 to rotate forward or reverse, which can synchronously drive the lower limb leg support 3 to move horizontally to the left or right.
[0023] A footrest 4 is installed on one outer wall of the lower limb leg support 3. A buffer plate 401 is installed on one outer wall of the footrest 4. Guide posts 402 are provided above and below one outer wall of the buffer plate 401. The outer wall of the guide post 402 is slidably connected to the inside of the footrest 4. A nut 403 is threaded onto one side of the outer wall of the guide post 402. A spring 404 is provided on the other side of the outer wall of the guide post 402. An elastic band 405 is provided on one outer wall of the buffer plate 401. Velcro 406 is provided on the surface of the elastic band 405. The buffer plate 401 is slidably connected to the footrest 4 on the lower limb leg support 3 by the guide post 402. The spring 404 on the outer wall of the guide post 402 has an elastic cushioning effect, so that the patient undergoing hemodialysis can place his legs on the lower limb leg support 3 and his feet on the buffer plate 401, which is supported by the elastic band 406 on the buffer plate 401. 5. The footrest 406 is fixed to the patient's feet with Velcro, and then the footrest 4 is slowly moved forward by the motor 204 until the patient's lower limbs are bent. During this process, the buffer plate 401 and spring 404 provide cushioning to prevent the patient's lower limbs from being injured due to excessive pushing force. After the lower limbs are bent, they are slowly retracted to achieve stretching and relief treatment for the patient's lower limbs. The whole unit is installed on the U-shaped seat 2, which is detachable from the bed 1. On the one hand, it does not affect the patient's hemodialysis treatment, and on the other hand, it can be installed and used on the patient's bed 1 at any time. It is easy to operate and use, and it avoids the situation where the patient needs to move to the relief device after hemodialysis for relief treatment, and also avoids the situation where the device for relieving lower limb spasms fixed on the bed interferes with the hemodialysis treatment.
[0024] Working principle: When using this utility model, place the U-shaped seat 2 on the bed 1, and connect the corresponding threaded tightening screws 203 to the front and rear ends of the U-shaped seat 2 to the bed 1. After adjusting it to a suitable position, rotate the tightening screws 203 until the tail end contacts the surface of the bed 1, thus achieving the installation and fixing of the U-shaped seat 2. The guide seat 301 on the bottom of the lower limb leg support 3 is set by the movable seat 302 in a threaded connection to the outer wall of the rotating shaft 202 on the drive box 201, and the lower limb leg support 3 is fixed by the guide seat 301 on the bottom of the lower limb leg support 3. Multiple sets of rollers 303 on the bottom of the leg support 3 contact the surface of the drive box 201. The output end of the motor 204 is fixedly connected to the rotating shaft 202, allowing the motor 204 to drive the rotating shaft 202 to rotate forward or backward, synchronously moving the lower limb leg support 3 horizontally to the left or right. The buffer plate 401 is slidably attached to the footrest 4 on the lower limb leg support 3 via the guide post 402. The spring 404 on the outer wall of the guide post 402 provides elastic cushioning, allowing the patient's legs to rest comfortably on the lower limb support during hemodialysis. The foot rests on the leg support 3, with the feet placed on the buffer plate 401. The patient's feet are secured by elastic straps 405 and Velcro 406 on the buffer plate 401. The motor 204 drives the leg support 4 to slowly move forward until the patient's lower limbs are bent. During this movement, the buffer plate 401 and spring 404 provide cushioning to prevent injury to the patient's lower limbs from excessive force. After the lower limbs are bent, the leg support 4 slowly retracts, providing stretching and relief. The entire device is mounted on the U-shaped seat 2, which is detachable from the bed 1. This design ensures it does not interfere with the patient's hemodialysis treatment and allows for easy installation and use on the bed 1. It minimizes the need for patients to move to the device after hemodialysis for further relief, and also avoids interference with hemodialysis treatment due to the device being fixed to the bed. This effectively improves the effectiveness of the device for relieving lower limb spasms during hemodialysis.
[0025] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A device for relieving spasms of both lower limbs during hemodialysis treatment, comprising a bed (1), wherein a U-shaped seat (2) is slidably connected to one side of the top of the bed (1), characterized in that: A drive box (201) is installed on the top of the U-shaped seat (2). A rotating shaft (202) is rotatably connected inside the drive box (201). A tightening screw (203) is threadedly connected to both the front and rear ends of the U-shaped seat (2). A motor (204) is installed on one side of the outer wall of the drive box (201). The output shaft of the motor (204) is fixedly connected to one end of the rotating shaft (202) through a coupling. A lower limb leg support (3) is installed on one side of the top of the drive box (201). A guide seat (301) is installed on one side of the bottom center position of the lower limb leg support (3). The outer wall of the guide seat (301) is slidably connected to one side of the upper surface of the drive box (201). A movable seat (302) is installed at the bottom of the guide seat (301). The interior of the movable seat (302) is threadedly connected to the outer wall of the rotating shaft (202). A footrest (4) is installed on one side of the outer wall of the lower limb leg support (3).
2. The device for relieving bilateral lower limb spasms during hemodialysis treatment according to claim 1, characterized in that: The lower limb leg support (3) is provided with rollers (303) at both the front and rear ends of the bottom. The rollers (303) contact the upper surface of the drive box (201). The upper surface of the lower limb leg support (3) is provided with protective sponge (304).
3. The device for relieving bilateral lower limb spasms during hemodialysis treatment according to claim 1, characterized in that: A buffer plate (401) is installed on one side of the outer wall of the footrest (4), and guide posts (402) are provided above and below one side of the outer wall of the buffer plate (401).
4. The device for relieving bilateral lower limb spasms during hemodialysis treatment according to claim 3, characterized in that: The outer wall of the guide post (402) is slidably connected to the inside of the foot support (4). A nut (403) is threadedly connected to one side of the outer wall of the guide post (402), and a spring (404) is provided on the other side of the outer wall of the guide post (402).
5. The device for relieving bilateral lower limb spasms during hemodialysis treatment according to claim 4, characterized in that: An elastic band (405) is provided on one outer wall of the buffer plate (401), and Velcro (406) is provided on the surface of the elastic band (405).