Postoperative limb rehabilitation exercise device for joint surgery
By designing a forward and reverse motor-driven screw sleeve structure and a timing controller, a limb rehabilitation exercise device for postoperative joint surgery was developed. This solved the problem of uncontrollable range of motion in knee joint exercise devices, achieving stable and adaptive rehabilitation exercises that can adapt to different rehabilitation stages and individual patient differences.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QUANZHOU ZHENGGU HOSPITAL
- Filing Date
- 2025-02-07
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional knee joint exercise devices have uncontrollable range of motion, which can easily cause secondary injuries. Furthermore, the range of motion needs to be adjusted at different stages of rehabilitation, and existing devices cannot meet individual needs.
Design a limb rehabilitation exercise device after joint surgery, which adopts a forward and reverse motor driven screw sleeve structure, combined with a timing controller and a limit hole buckle system to achieve stable movement and angle control of the knee joint in the anterior and posterior directions.
It achieves stability and adaptability in knee joint exercises, avoids lateral swaying injuries, adapts to different patients' rehabilitation stages and foot sizes, and improves rehabilitation outcomes.
Smart Images

Figure CN224207042U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical rehabilitation equipment technology, specifically a limb rehabilitation exercise device after joint surgery. Background Technology
[0002] Knee injuries are common contact or non-contact injuries in sports. In addition to treatment, patients after knee surgery also need to do some rehabilitation exercises to speed up the recovery of the knee joint.
[0003] Traditional knee joint exercises involve patients standing and performing knee flexion and extension movements. The range of motion is uncontrollable. If the movement sways from side to side, it can cause secondary damage to the knee joint. If the range of motion is too large, it is not only detrimental to the knee joint rehabilitation, but also excessively stimulates the joint, causing increased swelling and inflammation, which is harmful to the recovery of joint function. Moreover, the range of motion varies at different stages of rehabilitation and needs to be adjusted according to the rehabilitation progress.
[0004] Therefore, it is particularly important to design a limb rehabilitation exercise device after joint surgery to overcome the above-mentioned technical defects and improve its overall practicality. Utility Model Content
[0005] The purpose of this invention is to provide a limb rehabilitation exercise device after joint surgery to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A limb rehabilitation exercise device after joint surgery includes a fixed base plate. A fixed crossbar extending along the length of the fixed base plate is located at the top and center of the fixed base plate. A forward and reverse motor is installed at the front end of the fixed crossbar. The output end of the forward and reverse motor passes through the interior of the fixed crossbar and is connected to a drive screw. A screw sleeve is threaded onto the external part of the drive screw. A distance scale is located at the top of the fixed base plate and on one side of the fixed crossbar. A timing controller is located at the corner of the top of the fixed base plate. A movable base plate is installed on the top of the screw sleeve. A slide rail is installed on the top of the movable base plate. Slide seats are slidably sleeved on the front and rear ends of the slide rail. A slide groove is opened on the right side of the interior of the movable base plate. Limiting holes are evenly opened on the right side of the movable base plate. A folded bracket that slides with the slide groove is provided on the right side of the slide seat. A spring buckle that works with the limiting hole is provided on the outer side of the folded bracket that extends into the interior of the slide groove. A rear foot pedal is provided on the top of the slide seat at the front end. A forefoot pedal is provided on the top of the slide seat at the rear end. Fixing straps are connected to the left and right sides of the rear foot pedal and the forefoot pedal.
[0008] In a preferred embodiment of this invention, the timing controller is connected to the forward and reverse motors via wires, and the connection is electrical.
[0009] As a preferred embodiment of this utility model, both ends of the drive screw are rotatably connected to the inside of the fixed crossbar through bearing seats.
[0010] As a preferred embodiment of this utility model, a rectangular groove extending along the length of the fixed crossbar is provided at the top of the fixed crossbar, wherein the connection between the rectangular groove and the screw sleeve is a sliding connection.
[0011] As a preferred embodiment of this utility model, the connection between the limiting hole and the spring buckle is a snap-fit engagement.
[0012] As a preferred embodiment of this utility model, the connection method between the two sets of fixing straps on the same side is adhesive connection.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. In this utility model, a limb rehabilitation exercise device for postoperative joint surgery can be set up to keep the knee joint moving in the forward and backward direction, avoiding damage caused by swaying from side to side. By controlling the distance of foot movement, the angle of knee joint movement can be controlled to adapt to different patients or different rehabilitation stages of patients.
[0015] 2. In this utility model, a limb rehabilitation exercise device for postoperative joint surgery is designed to be suitable for patients with different foot sizes, making their feet more stable and thus improving the rehabilitation exercise effect. Attached Figure Description
[0016] Figure 1 This is a perspective view of the overall structure of this utility model;
[0017] Figure 2 This is the first part of the structural diagram of this utility model;
[0018] Figure 3 This is the second part of the structural diagram of this utility model.
[0019] In the diagram: 1. Fixed base plate; 2. Fixed crossbar; 201. Forward and reverse motor; 202. Drive screw; 203. Screw sleeve; 3. Distance scale; 4. Timing controller; 5. Movable base plate; 501. Slide rail; 502. Slide seat; 503. Slide groove; 504. Limiting hole; 505. Folding bracket; 506. Spring buckle; 507. Rear foot pedal; 508. Forefoot pedal; 509. Fixing strap. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0021] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, and several embodiments of the utility model will be provided. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and complete.
[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.
[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0024] For examples, please refer to Figure 1-3 This utility model provides a technical solution:
[0025] A limb rehabilitation exercise device after joint surgery includes a fixed base plate 1, a fixed crossbar 2 extending along the length of the fixed base plate 1 at the top and middle position of the fixed base plate 1, a forward and reverse motor 201 installed at the front end of the fixed crossbar 2, the output end of the forward and reverse motor 201 passing through the interior of the fixed crossbar 2 and connected to a drive screw 202, a screw sleeve 203 threaded onto the outside of the drive screw 202, a distance scale 3 installed at the top of the fixed base plate 1 and on one side of the fixed crossbar 2 for observing the distance of foot movement, thereby controlling the angle of knee joint movement to adapt to different patients or different rehabilitation stages of patients, a timer controller 4 installed at the corner of the top of the fixed base plate 1 for observing the training time, and a movable base plate 5 installed at the top of the screw sleeve 203.
[0026] The timing controller 4 is connected to the forward and reverse motor 201 by wires, and the connection is electrical. Both ends of the drive screw 202 are rotatably connected to the inside of the fixed crossbar 2 through bearing seats. The top of the fixed crossbar 2 has a rectangular groove extending along the length of the fixed crossbar 2, and the connection between the rectangular groove and the screw sleeve 203 is a sliding connection.
[0027] In this embodiment, please refer to Figure 3 A slide rail 501 is installed on the top of the movable base plate 5. Slide seats 502 are slidably sleeved on the front and rear ends of the slide rail 501. A slide groove 503 is opened on the right side inside the movable base plate 5. Limiting holes 504 are evenly opened on the right side of the movable base plate 5. A folded bracket 505 that slides with the slide groove 503 is provided on the right side of the slide seat 502. A spring buckle 506 that works with the limiting hole 504 is provided on the outer side of one end of the folded bracket 505 that extends into the inside of the slide groove 503. A rear foot pedal 507 is provided on the top of the front slide seat 502. A front foot pedal 508 is provided on the top of the rear slide seat 502. Fixing straps 509 are connected to the left and right sides of the rear foot pedal 507 and the front foot pedal 508.
[0028] The connection between the limiting hole 504 and the spring buckle 506 is a snap-fit, and the connection between the two sets of fixing straps 509 on the same side is an adhesive connection.
[0029] The working process of this utility model is as follows: In use, medical staff or family members fix the patient's foot, placing the heel on the heel pedal 507 and the ball of the foot on the forefoot pedal 508. The position of the foot pedal is adjusted by moving the slide seat 502 on the slide rail 501, and the spring buckle 506 of the folded support plate 508 is fixed in the corresponding limiting hole 504. Finally, the foot is bound with the fixing strap 509. This is suitable for patients with different foot sizes, making the foot more stable. Then, according to the patient's rehabilitation training plan, the training time is determined and the number of rotations of the forward and reverse motor 201 driving the drive screw 202 is adjusted. The drive screw 202 drives the screw sleeve 203 to move, thereby keeping the knee joint moving in the forward and backward direction, avoiding lateral swaying and causing injury, and controlling the distance of foot movement, thereby controlling the angle of knee joint movement, adapting to different patients or different rehabilitation stages.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A limb rehabilitation exercise device after joint surgery, comprising a fixed base plate (1), characterized in that: A fixed crossbar (2) extending along the length of the fixed base plate (1) is provided at the top and middle position of the fixed base plate (1). A forward and reverse motor (201) is installed at the front end of the fixed crossbar (2). The output end of the forward and reverse motor (201) passes through the interior of the fixed crossbar (2) and is connected to a drive screw (202). A screw sleeve (203) is threaded onto the external thread of the drive screw (202). A distance scale (3) is provided at the top of the fixed base plate (1) and on one side of the fixed crossbar (2). A timing controller (4) is provided at the corner of the top of the fixed base plate (1). A movable base plate (5) is installed on the top of the screw sleeve (203). A slide rail (501) is installed on the top of the movable base plate (5). The slide rail (501) is located on the outer side of the slide rail (501). Both the front and rear ends are slidably fitted with slide blocks (502). A slide groove (503) is provided on the right side inside the movable base plate (5). Limiting holes (504) are evenly provided on the right side of the movable base plate (5). A folded bracket (505) that slides with the slide groove (503) is provided on the right side of the slide block (502). A spring buckle (506) that works with the limiting hole (504) is provided on the outer side of the folded bracket (505) that extends into the inside of the slide groove (503). A rear foot pedal (507) is provided on the top of the slide block (502) at the front end. A front foot pedal (508) is provided on the top of the slide block (502) at the rear end. Fixing straps (509) are connected to the left and right sides of the rear foot pedal (507) and the front foot pedal (508).
2. The limb rehabilitation exercise device after joint surgery according to claim 1, characterized in that: The timing controller (4) is connected to the forward and reverse motor (201) by a wire, and the connection is electrical.
3. The limb rehabilitation exercise device after joint surgery according to claim 1, characterized in that: Both ends of the drive screw (202) are rotatably connected to the inside of the fixed crossbar (2) through bearing seats.
4. The limb rehabilitation exercise device after joint surgery according to claim 1, characterized in that: The top of the fixed crossbar (2) is provided with a rectangular groove extending along the length of the fixed crossbar (2), wherein the connection between the rectangular groove and the screw sleeve (203) is a sliding connection.
5. The limb rehabilitation exercise device after joint surgery according to claim 1, characterized in that: The connection between the limiting hole (504) and the spring buckle (506) is a snap-fit engagement.
6. The limb rehabilitation exercise device after joint surgery according to claim 1, characterized in that: The connection between the two sets of fixing straps (509) on the same side is an adhesive connection.