Knee joint postoperative flexion and extension assisting device
By installing a postoperative knee joint flexion and extension auxiliary device on the rear wheel of a bicycle, the high price and safety issues of postoperative knee joint rehabilitation equipment are solved, low-cost and safe knee joint rehabilitation training is achieved, and flexion and extension exercises are performed using existing bicycles.
Patent Information
- Application Number
- CN202421683908.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-07-17
AI Technical Summary
Existing rehabilitation equipment after knee surgery is expensive, which places a heavy financial burden on patients. In addition, direct bicycle rehabilitation training has safety risks and problems of uncomfortable strength.
A postoperative knee joint flexion and extension auxiliary device installed on the rear wheel of a bicycle is designed. It includes a bottom frame, side support components and a telescopic rod. The existing bicycle is used for rehabilitation training, and the seat cushion is fixed by a rope to perform safe and stable knee flexion and extension exercises.
Low-cost, safe and stable knee joint rehabilitation training is achieved, and flexion and extension exercises are performed using existing bicycles, which reduces the financial burden on patients and improves the safety and applicability of rehabilitation training.
Smart Images
Figure CN223350900U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of medical machinery, in particular to a post-operative auxiliary flexion and extension device for knee joints. Background Art
[0002] Degenerative osteoarthritis of the knee is a common and frequently occurring disease in orthopedics, and is more common in the elderly. Knee replacement is a commonly used surgical treatment for this disease. Postoperative rehabilitation functional exercises are particularly important for the patient's recovery. Postoperative rehabilitation functional exercises are mainly based on the flexion and extension of the knee joint. Common rehabilitation equipment on the market is often expensive, which increases the cost of rehabilitation and brings a certain financial burden to patients. Bicycles are a common means of transportation, and the pedaling action is a good flexion and extension movement of the knee joint. However, patients cannot ride bicycles directly for rehabilitation training. First, safety issues cannot be guaranteed, and second, the leg force required for direct riding is relatively large, which does not meet the needs of rehabilitation training. Therefore, it is necessary to fix the vehicle and lift the rear wheel so that the patient can complete rehabilitation training on the spot on the bicycle. Utility Model Content
[0003] The purpose of the utility model is to provide a post-operative knee joint flexion and extension auxiliary device which has a reasonable structure, is easy to use, safe and stable, and can be used with an existing bicycle.
[0004] The utility model is realized through the following technical solutions:
[0005] A post-operative auxiliary flexion and extension device for knee joint joints, installed on the rear wheel of a bicycle, characterized in that: it includes a bottom frame and a side support assembly; there are two side support assemblies, which are arranged in a mirror-symmetrical manner on both sides of the rear wheel of the bicycle; the side support assembly includes two side support rods, both of which are inclined rods, the lower ends of the two side support rods are assembled on the bottom frame, and the upper ends intersect at a point and are provided with a connecting piece with a circular hole, and the connecting piece is rotatably connected to the axle of the rear wheel of the bicycle; two telescopic rods are equipped and connected to the bottom frame; the two ends of the telescopic rods are hinged to the seat support plate and the bottom frame respectively; the seat support plate is fixedly connected to the seat cushion, and a rope hole is provided on the side.
[0006] Preferably, the bottom frame is in the shape of a rectangular frame, including two horizontal bars and two vertical bars, the horizontal bars are hollow square steels, the vertical bars are steel bars, and the vertical bars are fixedly connected to the upper surface of the horizontal bars.
[0007] Preferably, a linear slide is provided at the connection between the crossbar of the bottom frame and the side support assembly, and the side support assembly and the linear slide are detachably connected by fastening bolts.
[0008] Preferably, the linear slide groove is a linear through groove opened on the upper surface of the cross bar of the bottom frame.
[0009] Preferably, a rubber anti-slip layer is fixedly connected to the bottom surface of the cross bar of the bottom frame.
[0010] Preferably, the relative positions of the two sections of the telescopic rod can be fixed by fastening bolts.
[0011] Preferably, the two sections of the telescopic rod include an outer rod and an inner rod, a plurality of locking holes are provided at the lower portion of the inner rod, and the fastening bolts pass through the mounting holes of the outer rod and extend into the locking holes for cooperative installation.
[0012] Preferably, a counter is provided on the bottom frame; the counter includes a magnet, a magnetic induction probe and a body, and the magnetic induction probe is electrically connected to the body; the magnet is fixedly connected to the rear wheel of the bicycle, the magnetic induction probe is fixedly connected to the bottom frame, and the magnetic induction probe points in the direction of the rear wheel of the bicycle, and the minimum distance between the magnet and the magnetic induction probe during the process of one rotation of the rear wheel of the bicycle is 10-20 mm.
[0013] The beneficial effects of the utility model are: reasonable structure, convenient use, safety and stability, can be used with existing bicycles, low production cost, and conducive to popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 : Schematic diagram of the three-dimensional structure of the utility model;
[0015] Figure 2 : Another three-dimensional structural schematic diagram of the utility model;
[0016] Figure 3 : Reference diagram of the use state of the utility model;
[0017] In the figure: 1- bottom frame, 2- side support assembly, 3- telescopic rod, 4- seat support plate, 5- seat cushion, 6- rope hole. DETAILED DESCRIPTION
[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0019] Example: Figure 1-3As shown, a postoperative auxiliary flexion and extension device for knee joint joint, wherein: a postoperative auxiliary flexion and extension device for knee joint joint, installed on the rear wheel of a bicycle, characterized in that: it includes a bottom frame 1 and a side support assembly 2; two side support assemblies 2 are provided, which are arranged in a mirror-symmetrical manner on both sides of the rear wheel of the bicycle; the side support assembly 2 includes two side support rods, both side support rods are inclined rods, the lower ends of the two side support rods are assembled on the bottom frame 1, and the upper ends intersect at one point and are provided with a connecting piece with a circular hole, and the connecting piece is rotatably connected to the axle of the rear wheel of the bicycle. The bottom frame is in the shape of a rectangular frame, including two horizontal bars and two vertical bars, the horizontal bars are hollow square steels, the vertical bars are steel bars, and the vertical bars are fixedly connected to the upper surface of the horizontal bars. A linear slide is provided at the connection between the horizontal bars of the bottom frame and the side support assembly, and the side support assembly and the linear slide are detachably connected with a set bolt.
[0020] When in use, the side support assembly 2 is rotatably connected to the main shaft of the rear wheel of the bicycle and is limited axially by a nut; and the linear slide groove provided at the connection between the bottom frame 1 and the side support assembly 2 can adjust the position of the two side support assemblies 2, making it suitable for bicycles of different sizes, making the use scenarios of the utility model flexible and changeable.
[0021] Among them: two telescopic rods 3 are equipped and connected to the bottom frame 1; the two ends of the telescopic rods 3 are hinged to the seat cushion support plate 4 and the bottom frame 1 respectively; the seat cushion support plate 4 is fixedly connected to the seat cushion 5, and a rope binding hole 6 is provided on the side; the two sections of the telescopic rod 3 can be fixed in relative position by tightening bolts; the two sections of the telescopic rod include an outer rod and an inner rod, and a plurality of locking holes are provided at the lower part of the inner rod. The tightening bolts pass through the mounting holes of the outer rod and extend into the locking holes for fitting installation.
[0022] During use, the seat cushion 5 is adjusted to be above the rear seat of the bicycle, and then the two sections of the telescopic rod 3 are fixed in position. Then, the seat cushion support plate 4 is tied to the rear seat or frame of the bicycle through the rope tie hole 6 with a rope to complete the seat cushion fixation. At this time, the rear wheel of the bicycle is raised, and the patient can sit on the seat cushion 5 and perform knee joint rehabilitation training by pedaling the bicycle.
[0023] Among them, a rubber anti-slip layer is fixedly connected to the bottom surface of the cross bar of the bottom frame 1; the provision of the rubber anti-slip layer can improve the stability of the auxiliary flexion and extension device after knee joint surgery.
[0024] Among them, a counter is provided on the bottom frame 1; the counter includes a magnet, a magnetic induction probe and a body, and the magnetic induction probe is electrically connected to the body; the magnet is fixedly connected to the rear wheel of the bicycle, and the magnetic induction probe is fixedly connected to the bottom frame 1, and the magnetic induction probe points in the direction of the rear wheel of the bicycle. The minimum distance between the magnet and the magnetic induction probe during the process of rotating one circle of the rear wheel of the bicycle is 10-20 mm; the magnet is fixedly connected to the tread of the rear wheel of the bicycle that contacts the ground, and the magnetic induction probe is fixed on the bottom frame 1 and points in the direction of the rear wheel of the bicycle. Every time the rear wheel of the bicycle rotates one circle, the magnet is driven close to the magnetic induction probe once, completing a count, which is displayed on the body and is used to understand the amount of exercise the patient undergoes during rehabilitation training.
[0025] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A postoperative knee joint flexion and extension device, mounted on the rear wheel of a bicycle, characterized by: The invention comprises a bottom frame (1) and a side support assembly (2); two side support assemblies (2) are provided and arranged on both sides of the rear wheel of a bicycle in a mirror-symmetrical manner; the side support assembly (2) comprises two side support rods, both of which are inclined rods, the lower ends of the two side support rods are assembled on the bottom frame (1), the upper ends of the two side support rods intersect at a point and are provided with a connecting piece with a circular hole, and the connecting piece is rotatably connected to the axle of the rear wheel of the bicycle; two telescopic rods (3) are equipped and connected to the bottom frame (1); the two ends of the telescopic rods (3) are respectively hinged to the seat support plate (4) and the bottom frame (1); the seat support plate (4) is fixedly connected to a seat cushion (5), and a rope hole (6) is provided on the side.
2. The postoperative knee joint flexion and extension assisting device according to claim 1, wherein: The bottom frame (1) is in the shape of a rectangular frame, comprising two horizontal bars and two vertical bars, wherein the horizontal bars are hollow square steels and the vertical bars are steel bars, and the vertical bars are fixedly connected to the upper surfaces of the horizontal bars.
3. The postoperative knee joint flexion and extension assisting device according to claim 1, wherein: A linear slide is provided at the connection between the crossbar of the bottom frame (1) and the side support assembly (2), and the side support assembly (2) and the linear slide are detachably connected by fastening bolts.
4. The postoperative knee joint flexion and extension assisting device according to claim 3, wherein: The linear slide groove is a linear through groove opened on the upper surface of the cross bar of the bottom frame (1).
5. The postoperative knee joint flexion and extension assisting device according to claim 1, wherein: A rubber anti-slip layer is fixedly connected to the bottom surface of the crossbar of the bottom frame (1).
6. The postoperative knee joint flexion and extension assisting device according to claim 1, wherein: The relative positions of the two sections of the telescopic rod (3) can be fixed by fastening bolts.
7. The postoperative flexion and extension assisting device for knee joint surgery according to claim 6, characterized in that: The two sections of the telescopic rod include an outer rod and an inner rod. A plurality of locking holes are provided at the lower portion of the inner rod. The fastening bolts pass through the mounting holes of the outer rod and extend into the locking holes for cooperative installation.
8. The postoperative flexion and extension assisting device for knee joint surgery according to any one of claims 1 to 7, characterized in that: The bottom frame (1) is provided with a counter; the counter comprises a magnet, a magnetic induction probe and a body, and the magnetic induction probe is electrically connected to the body; the magnet is fixedly connected to the rear wheel of the bicycle, the magnetic induction probe is fixedly connected to the bottom frame (1), and the magnetic induction probe points in the direction of the rear wheel of the bicycle, and the minimum distance between the magnet and the magnetic induction probe during the process of rotating one circle with the rear wheel of the bicycle is 10-20 mm.