Elbow joint flexion rehabilitation training device
By using the adhesive design and distance adjustment of the elastic strap and pressure cap assembly, combined with the drive of the geared motor, the problem of binding different arms in existing elbow joint rehabilitation trainers has been solved, realizing the convenience and effectiveness of elbow joint flexion training and significantly improving rehabilitation results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI PEOPLES HOSPITAL
- Filing Date
- 2025-02-27
- Publication Date
- 2026-06-23
AI Technical Summary
Existing elbow flexion rehabilitation trainers lack the function of binding arms of different thicknesses and lengths, have complex structures and are inconvenient to operate, making it difficult to effectively carry out elbow flexion rehabilitation training.
It combines an elastic strap with a pressure cap assembly, using adhesive hooks and adhesive rough surfaces to secure arms of different thicknesses. By adjusting the distance between the front support ring and the rear support structure, it can adapt to arms of different lengths. Combined with a geared motor to drive the rotating sleeve, it can perform elbow flexion training.
It enables convenient fixation of arms of different thicknesses and lengths. Its simple structure allows for effective elbow flexion rehabilitation training, significantly improving elbow joint range of motion, relieving pain, enhancing muscle strength, and improving daily living activities.
Smart Images
Figure CN224387727U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of joint training technology, and in particular to an elbow joint flexion rehabilitation training device. Background Technology
[0002] The elbow joint is an important component of the upper limb, with a complex structure that enables movements such as elbow flexion, extension, and forearm pronation and supination. After elbow fractures or surgery, complications such as elbow stiffness and limited range of motion are common. To improve treatment and rehabilitation outcomes, early rehabilitation exercises under the guidance of a doctor are necessary to accelerate the recovery of elbow joint function and prevent complications.
[0003] Existing technologies also include some elbow flexion rehabilitation training devices. For example, Chinese utility model patent application number CN202420170268.9, entitled "A Novel Postoperative Elbow Joint Rehabilitation Training Device," uses a motor to drive a lead screw to rotate, moving the housing on the leather strap forward. Through repeated back-and-forth movements, it allows the elbow to perform rehabilitation exercises. However, it mainly focuses on back-and-forth movements for rehabilitation training and lacks the function of flexion exercises for the elbow joint. The fixation operation for the arm is also relatively cumbersome. Another example is Chinese utility model patent application number CN202321419456.2, entitled "An Elbow Joint Functional Rehabilitation Training Device." It can perform active elbow flexion training or passively rotate the patient's forearm relative to the upper arm and flex the elbow by a drive motor-driven movable bracket. It also works with an airbag to compress the patient's upper arm to restrict blood flow and generate resistance in the distal limb, improving exercise efficiency. However, its structure is relatively complex, and the fixation effect has room for improvement. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an elbow joint flexion rehabilitation training device, which can fix the patient's arm of different thickness and length, is easy to operate, has a simple structure, and facilitates elbow joint flexion rehabilitation training.
[0005] This utility model is achieved using the following technical solution: an elbow joint flexion rehabilitation training device, comprising a front support ring, a rear support structure, a movable support structure, a connecting structure, a pressure cap assembly, a rear elastic band, a front elastic band, and a drive assembly. The front support ring is fixed to the upper end of the movable support structure, the drive assembly is fixed to the rear support structure, the rear end of the connecting structure is connected and fixed to the drive end of the drive assembly, and the front end of the connecting structure is connected and fixed to the rear end of the movable support structure. The drive assembly is used to drive the connecting structure and its front structure to rotate around the front end of the rear support structure. A pressure cap assembly is connected above the front support ring via the front elastic band for supporting and fixing the forearm, and a pressure cap assembly is also connected above the rear support structure via the rear elastic band for supporting and fixing the upper arm.
[0006] Furthermore, the horizontal distance between the front support ring and the rear support structure can be adjusted by moving the support structure.
[0007] Furthermore, the movable support structure includes a slide plate, a slide groove, a slider, and a fastening knob. The slide groove is horizontally disposed at the upper center of the slide plate. The slider is installed in the slide groove through a sliding fit. A row of threaded through holes is provided at equal intervals on one side of the slide plate. The front end of the fastening knob is installed in the threaded through hole through a threaded fit, so that the front end of the fastening knob contacts one side of the slider and presses it to be fixed in the slide groove.
[0008] Furthermore, two support connecting plates are symmetrically fixed on both sides of the top of the slider, and a front adhesive rough surface is fixed on the upper outer side of the support connecting plate. Both ends of the front elastic pull strip are provided with adhesive hook surfaces that can be adhered to the front adhesive rough surface.
[0009] Furthermore, the rear support structure includes a rear support ring, an outer ring, and a rear adhesive rough surface. The outer ring is fixed to the front bottom end of the rear support ring, and the rear adhesive rough surface is fixed to the outside of the rear support ring and the outer ring. Both ends of the rear elastic pull strip are provided with adhesive hooks that can be adhered to the rear adhesive rough surface.
[0010] Furthermore, the connecting structure includes a rotating sleeve and front and rear connecting rods, with the rotating sleeve fixed to the rear end of the front and rear connecting rods.
[0011] Furthermore, the drive assembly includes a docking ring, a reducer, and a geared motor. The geared motor is fixed inside the outer ring, the reducer is fixed at the front bottom end of the rear support ring, the docking ring is fixed outside the reducer, and the rotating sleeve is fixedly connected to the docking ring. The geared motor drives the rotating sleeve to rotate.
[0012] Furthermore, the cap assembly includes a cap through groove and an arc-shaped cap, with two cap through grooves symmetrically arranged on both sides of the arc-shaped cap.
[0013] Furthermore, a handle is fixed to the top of the arc-shaped pressure cap.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] 1. This utility model relates to an elbow joint flexion rehabilitation training device, which uses an elastic pull strap and a pressure cover assembly to bond the elbow with an adhesive hook surface and a rear adhesive rough surface. It can bind the elbow of patients with different thicknesses, and the tightening and opening operations are convenient. The structure of the training device is simple.
[0016] 2. The present invention relates to an elbow joint flexion rehabilitation training device, which can adjust the horizontal distance between the front support ring and the rear support structure according to the length of the patient's forearm, so that the front support ring can fix the position of the corresponding forearm and better carry out elbow joint rehabilitation training. Attached Figure Description
[0017] Figure 1 This is a right view of the elbow flexion rehabilitation training device of this utility model;
[0018] Figure 2 This is a three-dimensional structural schematic diagram of the present invention;
[0019] Figure 3 This is a schematic diagram of the rear support structure in this utility model;
[0020] Figure 4 This is a structural schematic diagram of the pressure cap assembly in this utility model.
[0021] In the diagram: Front support ring-1; Rear support structure-2; Moving support structure-3; Connecting structure-4; Pressure cap assembly-5; Rear elastic pull strap-6; Front elastic pull strap-7; Rear support ring-21; Outer ring-22; Rear adhesive rough surface-23; Butt ring-24; Reducer-25; Slide plate-31; Slide groove-32; Slider-33; Support connecting plate-34; Front adhesive rough surface-35; Fastening knob-36; Rotating sleeve-41; Front and rear connecting rods-42; Pressure cap through groove-51; Arc-shaped pressure cap-52; Handle-53. Detailed Implementation
[0022] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.
[0023] The purpose of this invention is to address the shortcomings of existing technologies by providing an elbow joint flexion rehabilitation training device.
[0024] Example 1
[0025] This embodiment provides an elbow joint flexion rehabilitation training device, referring to... Figure 1As shown, the structure includes a front support ring 1, a rear support structure 2, a movable support structure 3, a connecting structure 4, a pressure cap assembly 5, a rear elastic strap 6, a front elastic strap 7, and a drive assembly. The front support ring 1 is fixed to the upper end of the movable support structure 3, and the drive assembly is fixed to the rear support structure 2. The rear end of the connecting structure 4 is connected and fixed to the drive end of the drive assembly, and the front end of the connecting structure 4 is connected and fixed to the rear end of the movable support structure 3. The drive assembly is used to drive the connecting structure 4 and its front structure to rotate around the front end of the rear support structure 2. A pressure cap assembly 5 is connected above the front support ring 1 via the front elastic strap 7 for supporting and fixing the forearm. A pressure cap assembly 5 is also connected above the rear support structure 2 via the rear elastic strap 6 for supporting and fixing the upper arm. The two pressure cap assemblies 5 connected above the front support ring 1 and the rear support structure 2 have the same structure but different sizes. The size of the pressure cap assembly 5 above the rear support structure 2 is smaller than that above the front support ring 1.
[0026] Reference Figure 2 As shown, the connecting structure 4 includes a rotating sleeve 41 and front and rear connecting rods 42, with the rotating sleeve 41 fixed to the rear end of the front and rear connecting rods 42.
[0027] Reference Figure 3 As shown, the rear support structure 2 includes a rear support ring 21, an outer ring 22, and a rear adhesive rough surface 23. The outer ring 22 is fixed to the front bottom end of the rear support ring 21, and the rear adhesive rough surface 23 is fixed to the outside of the rear support ring 21 and the outer ring 22. Both ends of the rear elastic pull strip 6 are provided with adhesive hooks that can be adhered to the rear adhesive rough surface 23.
[0028] Reference Figure 3 As shown, the drive assembly includes a docking ring 24, a fixed housing 25, and a geared motor. The geared motor (not shown) is fixed inside the outer ring 22. In this embodiment, the geared motor can be a 24V DC worm gear right-angle geared motor from the prior art. The drive end of the motor and the reducer are set perpendicularly. The fixed housing 25 is fixed to the front bottom end of the rear support ring 21. The fixed housing 25 is a hollow housing in the center, and its interior is connected to the cavity inside the outer ring 22, which facilitates the installation of the motor and its reducer. The docking ring 24 is fixed to the outside of the fixed housing 25. The rotating sleeve 41 is fixedly connected to the docking ring 24. The geared motor drives the rotating sleeve 41 to rotate through its reducer.
[0029] Reference Figure 4 As shown, the cap assembly 5 includes a cap through groove 51 and an arc-shaped cap 52. Two cap through grooves 51 are symmetrically arranged on both sides of the arc-shaped cap 52. The two cap through grooves 51 are for the two ends of the elastic pull strap to pass through. A handle 53 is fixed to the top of the arc-shaped cap 52.
[0030] This utility model discloses an elbow joint flexion rehabilitation training device, which is fixed by a fixed outer shell 25, so that the rear support ring 21 is horizontally fixed. Before use, the patient's upper arm is placed on the rear support ring 21, and then a pressure cap assembly 5 is placed above the upper arm. The upper arm is secured by the adhesive hooks at both ends of the rear elastic strap 6 and the adhesive rough surface 23. Similarly, the patient's forearm is placed inside the front support ring 1, and another pressure cap assembly 5 is placed above the forearm. The forearm is secured by the adhesive hooks at both ends of the front elastic strap 7 and the adhesive rough surface 35. Through the cooperation of the elastic strap and the pressure cap assembly 5, it is possible to secure the patient's arm of different thicknesses. It is easy to operate, and the training device has a simple structure and small size. During use, the rotating sleeve 41 is driven to rotate by a geared motor, which in turn drives the connecting structure 4 and its front structure to rotate around the front end of the rear support structure 2, so as to carry out flexion rehabilitation training for the patient's elbow joint.
[0031] Example 2
[0032] Based on the structure in Embodiment 1, referring to... Figures 1-2 As shown, this embodiment provides an elbow joint flexion rehabilitation trainer where the horizontal distance between the front support ring 1 and the rear support structure 2 can be adjusted via a movable support structure 3. Specifically, the movable support structure 3 includes a slide plate 31, a slide 32, a slider 33, and a fastening knob 36. The slide 32 is horizontally positioned at the upper center of the slide plate 31. The slider 33 is slidably mounted in the slide 32. A row of threaded through holes is evenly spaced on one side of the slide plate 31. The front end of the fastening knob 36 is threadedly mounted in one of the threaded through holes, so that the front end of the fastening knob 36 contacts one side of the slider 33 to press and fix it in the slide 32. Two support connecting plates 34 are symmetrically fixed on both sides of the top of the slider 33. The support connecting plates 34 are V-shaped, and a front adhesive rough surface 35 is fixed on the upper outer side of the support connecting plate 34. Both ends of the front elastic pull strap 7 are provided with adhesive hooks that can adhere to the front adhesive rough surface 35.
[0033] This utility model discloses an elbow joint flexion rehabilitation training device, which can adjust the horizontal distance between the front support ring 1 and the rear support structure 2 by connecting the fastening knob 36 with a suitable threaded through hole according to the length of the patient's forearm. This allows the front support ring 1 to fix the position of the corresponding forearm, thus better carrying out elbow joint rehabilitation training.
[0034] Appendix 1: Report on the Effectiveness of the Elbow Bending Rehabilitation Training Device
[0035] I. Overview
[0036] This report aims to evaluate the effects of an elbow flexion rehabilitation trainer on improving elbow joint range of motion, relieving pain, and enhancing muscle strength. This trainer is suitable for postoperative rehabilitation of elbow fractures, dislocations, tendon injuries, and for treating limited elbow joint movement caused by chronic conditions such as arthritis and tennis elbow.
[0037] II. Evaluation Methods
[0038] Subjects: Twenty patients with limited elbow joint mobility were randomly divided into an experimental group and a control group, with 10 patients in each group. The experimental group received rehabilitation training using an elbow flexion rehabilitation device, while the control group received traditional rehabilitation methods.
[0039] Evaluation indicators:
[0040] Elbow range of motion (ROM): The active flexion angle of the elbow joint is measured using a goniometer.
[0041] Pain level: The visual analog scale (VAS) was used to assess the patient's pain level, with 0 points indicating no pain and 10 points indicating severe pain.
[0042] Muscle strength: The strength of the elbow flexor muscles was assessed using a manual muscle strength test.
[0043] Activities of daily living (ADL): The Barthel Index was used to assess the patient's ADL.
[0044] Assessment period: A total of 4 weeks of rehabilitation training was conducted, 5 days a week, 30 minutes a day. Indicators were assessed before training, 2 weeks after training, and 4 weeks after training.
[0045] III. Results and Analysis
[0046] Elbow joint range of motion (ROM): After 4 weeks of training, the elbow flexion angle in the experimental group was significantly greater than that in the control group (P<0.05).
[0047] Pain level: After 4 weeks of training, the VAS score of the experimental group was significantly lower than that of the control group (P<0.05).
[0048] Muscle strength: After 4 weeks of training, the elbow flexor muscle strength in the experimental group was significantly higher than that in the control group (P<0.05).
[0049] Activities of daily living (ADL): After 4 weeks of training, the Barthel Index of the experimental group was significantly higher than that of the control group (P<0.05).
[0050] IV. Conclusion
[0051] This study shows that the elbow flexion rehabilitation trainer can effectively improve elbow joint range of motion, relieve pain, enhance muscle strength, and improve daily living activities, making it a safe and effective method for elbow joint rehabilitation training.
[0052] Appendix 2: Experimental Statistical Analysis Results (Experimental data omitted)
[0053] Elbow flexion angle (ROM)
[0054] The difference in flexion angle between the experimental group and the control group after 4 weeks of training was significant (P<0.05).
[0055] The average buckling angle of the experimental group increased from 45° to 85°, while that of the control group increased from 50° to 70°.
[0056] Pain level (VAS)
[0057] The VAS scores of the experimental group and the control group were significantly different after 4 weeks of training (P<0.05).
[0058] The average VAS score in the experimental group decreased from 7 to 3, while that in the control group decreased from 6 to 4.
[0059] Elbow flexor muscle strength
[0060] The difference in muscle strength between the experimental group and the control group after 4 weeks of training was significant (P<0.05).
[0061] The experimental group's average muscle strength improved from grade 2-3 to grade 4-5, while the control group's improved from grade 3 to grade 4.
[0062] Barthel Index
[0063] The Barthel index of the experimental group and the control group differed significantly after 4 weeks of training (P<0.05).
[0064] The average Barthel Index in the experimental group increased from 60 to 90, while that in the control group increased from 65 to 85.
Claims
1. An elbow joint flexion rehabilitation training device, characterized in that: The device includes a front support ring (1), a rear support structure (2), a movable support structure (3), a connecting structure (4), a pressure cap assembly (5), a rear elastic strap (6), a front elastic strap (7), and a drive assembly. The front support ring (1) is fixed to the upper end of the movable support structure (3), the drive assembly is fixed to the rear support structure (2), the rear end of the connecting structure (4) is connected and fixed to the drive end of the drive assembly, and the front end of the connecting structure (4) is connected and fixed to the rear end of the movable support structure (3). The drive assembly is used to drive the connecting structure (4) and its front structure to rotate around the front end of the rear support structure (2). A pressure cap assembly (5) is connected above the front support ring (1) via the front elastic strap (7) for supporting and fixing the forearm. A pressure cap assembly (5) is also connected above the rear support structure (2) via the rear elastic strap (6) for supporting and fixing the upper arm.
2. The elbow joint flexion rehabilitation training device according to claim 1, characterized in that: The horizontal distance between the front support ring (1) and the rear support structure (2) can be adjusted by moving the support structure (3).
3. The elbow joint flexion rehabilitation training device according to claim 2, characterized in that: The movable support structure (3) includes a slide plate (31), a slide (32), a slider (33), and a fastening knob (36). The slide (32) is horizontally arranged at the upper center of the slide plate (31). The slider (33) is installed in the slide (32) by sliding fit. A row of threaded through holes is provided at equal intervals on one side of the slide plate (31). The front end of the fastening knob (36) is installed in the threaded through hole by thread fit, so that the front end of the fastening knob (36) contacts one side of the slider (33) and presses it to be fixed in the slide (32).
4. The elbow joint flexion rehabilitation training device according to claim 3, characterized in that: Two support connecting plates (34) are symmetrically fixed on both sides of the top of the slider (33). A front adhesive rough surface (35) is fixed on the upper outer side of the support connecting plate (34). Both ends of the front elastic pull strip (7) are provided with adhesive hook surfaces that can be adhered to the front adhesive rough surface (35).
5. The elbow joint flexion rehabilitation training device according to claim 4, characterized in that: The rear support structure (2) includes a rear support ring (21), an outer ring (22) and a rear adhesive rough surface (23). The outer ring (22) is fixed to the front bottom of the rear support ring (21), and the rear adhesive rough surface (23) is fixed to the outside of the rear support ring (21) and the outer ring (22). Both ends of the rear elastic pull strip (6) are provided with adhesive hooks that can be adhered to the rear adhesive rough surface (23).
6. The elbow joint flexion rehabilitation training device according to claim 5, characterized in that: The connection structure (4) includes a rotating sleeve (41) and front and rear connecting rods (42), wherein the rotating sleeve (41) is fixed to the rear end of the front and rear connecting rods (42).
7. The elbow joint flexion rehabilitation training device according to claim 6, characterized in that: The drive assembly includes a docking ring (24), a reducer (25), and a geared motor. The geared motor is fixed inside the outer ring (22), the reducer (25) is fixed at the front bottom of the rear support ring (21), the docking ring (24) is fixed outside the reducer (25), and the rotating sleeve (41) is fixedly connected to the docking ring (24). The geared motor drives the rotating sleeve (41) to rotate.
8. The elbow joint flexion rehabilitation training device according to any one of claims 1 to 7, characterized in that: The cap assembly (5) includes a cap through groove (51) and an arc-shaped cap (52), and the arc-shaped cap (52) has two cap through grooves (51) symmetrically arranged on both sides.
9. The elbow joint flexion rehabilitation training device according to claim 8, characterized in that: The top of the arc-shaped pressure cap (52) is fixed with a handle (53).