Portable wrist joint autonomous rehabilitation exercise traction device

Abstract

The utility model relates to the technical field of rehabilitation apparatus, concretely relates to a portable wrist joint autonomous rehabilitation exercise traction device, its characterized in that: including lower arm supporting plate, palm holding plate, first mounting seat, second mounting seat, traction drive mechanism and one-way self locking mechanism, lower arm supporting plate installs on the first mounting seat, palm holding plate installs on the second mounting seat, and at least one bandage assembly is equipped on lower arm supporting plate and palm holding plate, and the second mounting seat is slidably connected with the first mounting seat through the sliding assembly, and the traction drive mechanism is used for moving the second mounting seat relative to the first mounting seat, and the one-way self locking mechanism is used for playing one-way self locking effect to the movement of second mounting seat. The utility model whole simple structure is portable, convenient operation, is suitable for family use, can realize the adjustment to the traction force, effectively ensures the stability and accurate control of traction force, can better satisfy the autonomous rehabilitation exercise demand of patient, improves rehabilitation efficiency and treatment effect simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of rehabilitation equipment technology, specifically to a portable wrist joint self-rehabilitation traction device. Background Technology

[0002] The wrist joint is one of the most important joints in the human body. Its complex anatomy and multi-axial movement make it susceptible to injury during exercise. In the treatment of distal radius fractures or other wrist-related injuries, prolonged immobilization or lack of appropriate rehabilitation training often leads to limited wrist movement, stiffness, and even ligament contractures and joint adhesions. Current wrist rehabilitation mainly falls into two categories: manual rehabilitation exercises and mechanized or electric rehabilitation devices. Manual rehabilitation exercises typically rely on the therapist or patient's own operation, applying traction manually to stretch the ligaments. However, this method has the following drawbacks: the traction force is difficult to control precisely; patients may refuse exercise due to pain, potentially leading to insufficient traction; and patients may find it difficult to maintain stable operation during prolonged treatment. This leads to poor rehabilitation outcomes. While mechanized or electric rehabilitation devices provide traction through motors, springs, or pneumatic devices and can achieve a certain degree of automation, although they have addressed some of the shortcomings of manual rehabilitation exercises, the following problems still exist: 1. Complexity: Some devices have complex structures, are difficult to operate, inconvenient to carry, and unsuitable for patients to use at home. 2. Large size and high price: These devices are usually designed for use in medical institutions, limiting their use in home rehabilitation. Therefore, there is an urgent need for a portable wrist joint self-rehabilitation traction device that is simple in structure, easy to operate, has adjustable traction force, and is suitable for home use. This would better meet the self-rehabilitation exercise needs of patients with distal radius fractures and other wrist joint injuries, while improving rehabilitation efficiency and treatment effects. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a portable wrist joint self-rehabilitation traction device with a simple and portable overall structure, convenient operation, suitable for home use, and capable of adjusting the traction force, effectively ensuring the stability and precise control of the traction force, so as to better meet the patient's needs for self-rehabilitation exercise, and improve rehabilitation efficiency and treatment effect.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a portable wrist joint self-rehabilitation traction device, comprising a lower arm support plate, a hand grip plate, a first mounting base, a second mounting base, a traction drive mechanism, and a one-way self-locking mechanism. The lower arm support plate is used to partially wrap the lower arm and is fixedly installed on the first mounting base. The hand grip plate is used to partially wrap the palm and is fixedly installed on the second mounting base. At least one strap assembly is provided on both the lower arm support plate and the hand grip plate to secure the lower arm and the palm respectively. The second mounting base is slidably connected to the first mounting base through a sliding assembly. The traction drive mechanism is used to drive the second mounting base to move relative to the first mounting base. The one-way self-locking mechanism is used to provide one-way self-locking for the movement of the second mounting base and allows the second mounting base to move away from the first mounting base.

[0005] Furthermore, the sliding assembly includes a strip-shaped slide rod and a sliding sleeve. The strip-shaped slide rod is rectangular in shape, and the sliding sleeve is fixedly mounted on the first mounting base. The sliding sleeve has a sliding hole that matches the strip-shaped slide rod. One end of the strip-shaped slide rod is fixedly mounted on the second mounting base, and the other end of the strip-shaped slide rod passes through the sliding hole and slides in cooperation with the sliding sleeve.

[0006] Furthermore, the traction drive mechanism includes a gear, a rack, and a knob. The rack is fixedly mounted on one side surface of the strip slide bar and is arranged along its length. The slide sleeve has a drive hole that communicates with the slide hole and penetrates its upper and lower surfaces. One end of the knob's rotating shaft extends into the drive hole and is rotatably connected to the slide sleeve. The gear is located in the drive hole and is fixedly mounted on the rotating shaft and meshes with the rack.

[0007] Furthermore, an annular limiting block is fixed on the outer circumferential surface of the rotating shaft, abutting against the lower end face of the sliding sleeve, and a limiting plate is installed on the top of the rotating shaft, abutting against the upper end face of the sliding sleeve.

[0008] Furthermore, the one-way self-locking mechanism includes a stop plate and an elastic element. The stop plate is hinged to the sliding sleeve via a hinge shaft, and the two ends of the stop plate form a pressing end and a stopping end, respectively. A stopping point is fixedly provided on the stopping end of the stop plate. A through hole is provided on one side surface of the sliding sleeve, which communicates with the sliding hole and allows the stopping point to pass through. The elastic element is used to always apply an elastic force to the stop plate, so that the stopping point engages with the teeth of the rack.

[0009] Furthermore, the elastic element is a torsion spring, which is sleeved on the hinge shaft. One straight torsion arm of the torsion spring abuts against the lower surface of the pressing end of the stop plate, and the other straight torsion arm of the torsion spring is locked in the retaining hole of the sliding sleeve.

[0010] Furthermore, the lower arm support plate has a lower arm support cavity, the hand grip plate has a hand grip cavity, and the hand grip plate also has a perforation through which the thumb can pass.

[0011] Furthermore, the strap assembly includes straps, connecting rings, and Velcro. Straps are installed on one side of the lower arm support plate and the hand grip plate, and connecting rings are installed on the other side of the lower arm support plate and the hand grip plate. One end of the strap can pass through the connecting ring and be detachably connected to itself via Velcro.

[0012] Furthermore, the lower arm support plate is equipped with 2-3 strap assemblies.

[0013] Furthermore, the first mounting base includes a first strip-shaped mounting plate and a first mounting block fixedly disposed at one end of the first strip-shaped mounting plate. The first strip-shaped mounting plate is locked and fixed to the bottom of the lower arm support plate by a first fastener. The second mounting base includes a second strip-shaped mounting plate and a second mounting block fixedly disposed at one end of the second strip-shaped mounting plate. The second strip-shaped mounting plate is locked and fixed to the bottom of the handle plate by a second fastener.

[0014] As described above, the portable wrist joint self-rehabilitation traction device provided by this utility model has the following beneficial effects: During use, the lower arm support plate can be securely fixed to the patient's lower arm via a strap assembly, and the lower arm grip plate can be securely fixed to the patient's palm via the strap assembly. Simultaneously, with the addition of a sliding component, a sliding connection can be achieved between the first and second mounting seats, guiding the movement of the second mounting seat relative to the first mounting seat and effectively ensuring the stability and smoothness of the second mounting seat's sliding. This allows the lower arm support plate and the grip plate to move closer or further apart. Therefore, when the traction drive mechanism moves the second mounting seat relative to the first mounting seat and away from it, the grip plate can also move relative to the lower arm support plate and away from it. The forearm support plate increases the distance between the grip plate and the forearm support plate, thereby applying traction force to the wrist joint between the patient's forearm and hand and stretching the ligaments. Simultaneously, the one-way self-locking mechanism prevents the second mounting base from moving closer to the first mounting base during traction, thus preventing the grip plate from moving closer to the forearm support plate. This effectively ensures stable and precise control of the traction force and provides sufficient traction. Its overall structure is simple, portable, easy to operate, inexpensive, and suitable for home use. Furthermore, by adjusting the distance between the grip plate and the forearm support plate, the traction force can be adjusted, better meeting the self-rehabilitation exercise needs of patients with distal radius fractures and other wrist joint injuries, while improving rehabilitation efficiency and treatment effectiveness. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a portable wrist joint self-rehabilitation traction device according to the present invention.

[0016] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0017] Figure 3 This is a schematic diagram of the connection structure of the traction drive mechanism, the one-way self-locking mechanism, and the sliding component.

[0018] Figure 4 This is a schematic diagram illustrating the usage of a portable wrist joint self-rehabilitation traction device according to this utility model.

[0019] In the diagram: 1-Lower arm support plate; 11-Lower arm support cavity; 2-Hand grip plate; 21-Hand grip cavity; 22-Perforation; 3-First mounting base; 31-First strip mounting plate; 311-First fastener; 32-First mounting block; 4-Second mounting base; 41-Second strip mounting plate; 411-Second fastener; 42-Second mounting block; 5-Traction drive mechanism; 51-Gear; 52-Rack; 53-Knob; 531-Rotating shaft; 5311-Annular limiting block; 5312-Limiting plate; 6-One-way self-locking mechanism; 61-Stop pressure plate; 611-Stop pointed block; 62-Elastic element; 63-Hinge shaft; 7-Strap assembly; 71-Strap; 72-Connecting ring; 73-Hook and loop fastener; 8-Sliding assembly; 81-Strip slide bar; 82-Sliding sleeve; 821-Drive hole; 822-Through hole; 91-Lower arm; 92-Palm. Detailed Implementation

[0020] The present invention will be further described below through specific embodiments.

[0021] like Figures 1 to 4 As shown, the portable wrist joint self-rehabilitation traction device of this utility model includes a lower arm support plate 1, a hand grip plate 2, a first mounting base 3, a second mounting base 4, a traction drive mechanism 5, and a one-way self-locking mechanism 6. The lower arm support plate 1 is used to partially wrap the lower arm 91 and is fixedly installed on the first mounting base 3. The hand grip plate 2 is used to partially wrap the palm 92 and is fixedly installed on the second mounting base 4. At least one strap assembly 7 is provided on both the lower arm support plate 1 and the hand grip plate 2 to bind and fix the lower arm 91 and the palm 92 respectively. The second mounting base 4 is slidably connected to the first mounting base 3 through a sliding assembly 8. The traction drive mechanism 5 is used to drive the second mounting base 4 to move relative to the first mounting base 3. The one-way self-locking mechanism 6 is used to provide one-way self-locking for the movement of the second mounting base 4 and allow the second mounting base 4 to move away from the first mounting base 3.

[0022] In use, the lower arm support 1 can be securely fastened to the patient's lower arm 91 via the strap assembly 7, and the lower arm 91 grip plate can be securely fastened to the patient's palm 92 via the strap assembly 7. Simultaneously, in conjunction with the sliding assembly 8, a sliding connection can be achieved between the first mounting base 3 and the second mounting base 4. This provides guidance for the movement of the second mounting base 4 relative to the first mounting base 3, effectively ensuring the stability and smoothness of the sliding of the second mounting base 4. This allows the lower arm support 1 and the grip plate 2 to move closer to or further away from each other. Therefore, when the traction drive mechanism 5 moves the second mounting base relative to the first mounting base 3 and away from the first mounting base 3, the grip plate 2 can also move relative to and away from the lower arm support 1. This increases the distance between the hand grip plate 2 and the lower arm support plate 1, thereby applying traction force to the wrist joint between the patient's lower arm 91 and palm 92 and stretching the ligaments. Simultaneously, in conjunction with the one-way self-locking mechanism 6, during traction, the second mounting base 4 is prevented from moving closer to the first mounting base 3, thus preventing the hand grip plate 2 from moving closer to the lower arm support plate 1. This effectively ensures stable and precise control of the traction force and provides sufficient traction. Its overall structure is simple, portable, easy to operate, inexpensive, and suitable for home use. Furthermore, by adjusting the distance between the hand grip plate 2 and the lower arm support plate 1, the traction force can be adjusted, better meeting the self-rehabilitation exercise needs of patients with distal radius fractures and other wrist joint injuries, while improving rehabilitation efficiency and treatment effectiveness.

[0023] The sliding assembly 8 includes a strip-shaped slide rod 81 and a sliding sleeve 82. The strip-shaped slide rod 81 is rectangular, and the sliding sleeve 82 is fixedly mounted on the first mounting base 3. The sliding sleeve 82 has a sliding hole that matches the strip-shaped slide rod 81. One end of the strip-shaped slide rod 81 is fixedly mounted on the second mounting base 4, and the other end of the strip-shaped slide rod 81 passes through the sliding hole and slides in cooperation with the sliding sleeve 82. This allows the first mounting base 3 and the second mounting base 4 to be connected as a whole to a certain extent and enables relative sliding between the two, with smooth and stable sliding.

[0024] The traction drive mechanism 5 includes a gear 51, a rack 52, and a knob 53. The rack 52 is fixedly disposed on one side surface of the strip slide bar 81 and is arranged along its length. Correspondingly, the rack 52 and the strip slide bar 81 are integrally formed. The sliding sleeve 82 has a drive hole 821 that communicates with the sliding hole and penetrates its upper and lower surfaces. One end of the rotating shaft 531 of the knob 53 extends into the drive hole 821 and is rotatably connected to the sliding sleeve 82. The gear 51 is disposed in the drive hole 821 and fixed. Mounted on the rotating shaft 531 and meshing with the rack 52, during operation, the knob 53 can be rotated to drive the gear 51 on the rotating shaft 531 to rotate. In conjunction with the meshing transmission between the gear 51 and the rack 52, the strip slide 81 can be moved relative to the gear 51. This allows the second mounting base 4 to move relative to the first mounting base 3, so that the grip plate 2 can move relative to the lower arm support plate 1. The structure is simple and the operation is convenient.

[0025] In addition, an annular limiting block 5311 is fixedly provided on the outer peripheral surface of the rotating shaft 531, which abuts against the lower end face of the sliding sleeve 82, and a limiting plate 5312 is installed on the top end of the rotating shaft 531, which abuts against the upper end face of the sliding sleeve 82. This can play a corresponding upper and lower limiting role to ensure that the rotating shaft 531 of the knob 53 will not disengage from the drive hole 821 of the sliding sleeve 82, and effectively ensure the stability of the rotational connection between the rotating shaft 531 and the sliding sleeve 82.

[0026] The one-way self-locking mechanism 6 includes a stop plate 61 and an elastic element 62. The stop plate 61 is hinged to the sliding sleeve 82 via a hinge shaft 63, with its two ends forming a pressing end and a stopping end, respectively. A stopping point 611 is fixedly provided at the stopping end of the stop plate 61. A through hole 822 is provided on one side surface of the sliding sleeve 82, communicating with the sliding hole and allowing the stopping point 611 to pass through. The elastic element 62 is used to maintain a constant pressure on the stop plate 61, causing the stopping point 611 to engage with the teeth of the rack 52. The elastic force, preferably, the elastic element 62 is a torsion spring, which is sleeved on the hinge shaft 63. One straight torsion arm of the torsion spring abuts against the lower surface of the pressing end of the stop plate 61, and the other straight torsion arm of the torsion spring is engaged in the retaining hole of the sliding sleeve 82. When the second mounting seat 4 moves towards the side closer to the first mounting seat 3, the interaction between the teeth on the rack 52 and the stop tip 611 will cause the stop end of the stop plate 61 to tend to flip downward, so that the stop tip 61... 1. The rack 52 is more tightly engaged within the teeth, providing a stop effect and thus achieving a one-way self-locking function for the movement of the second mounting seat 4. When the second mounting seat 4 needs to move away from the first mounting seat 3, the interaction between the teeth on the rack 52 and the stop point 611 causes the stop end of the stop plate 61 to tend to flip upward, causing the stop point 611 to disengage from the teeth of the rack 52, thereby allowing the second mounting seat 4 to move away from the first mounting seat 3. Furthermore, when the pressing end of the stop plate 61 is pressed, the stopping end of the stop plate 61 can be tilted upwards and the stopping tip 611 can be disengaged from the teeth of the rack 52, thereby releasing the one-way self-locking effect on the first mounting seat 3, so that the second mounting seat 4 can be moved towards the side closer to the first mounting seat 3 under the drive of the traction drive mechanism 5, so that the grip plate 2 can be moved towards the side closer to the palm 92 support plate, thereby reducing the distance between the grip plate 2 and the palm 92 support plate.

[0027] In addition, the lower arm support plate 1 is provided with a lower arm support cavity 11, which is adapted to the patient's lower arm 91 so that the inner surface of the lower arm support cavity 11 fits better with the lower arm, which helps to further improve the stability of the connection between the lower arm support plate 1 and the patient's lower arm 91. The hand grip plate 2 is provided with a hand grip cavity 21, which is adapted to the patient's palm 92 so that the inner surface of the hand grip cavity 21 fits better with the palm. The hand grip plate 2 is also provided with a perforation 22 through which the thumb can pass, which helps to further improve the stability of the connection between the hand grip plate 2 and the patient's palm 92.

[0028] The strap assembly 7 includes a strap 71, a connecting ring 72, and a Velcro 73. The strap 71 is installed on one side of the lower arm support plate 1 and the hand grip plate 2, and the connecting ring 72 is installed on the other side of the lower arm support plate 1 and the hand grip plate 2. One end of the strap 71 can pass through the connecting ring 72 and be detachably connected to itself through the Velcro 73, thereby facilitating quick connection and separation between the lower arm support plate 1 and the patient's lower arm 91 and between the hand grip plate 2 and the patient's palm 92. Correspondingly, the Velcro 73 includes a first hook surface and a first rough surface that adhere to each other. One side surface of the strap 71 is covered with the first hook surface, and the other side surface of the strap 71 is covered with the first rough surface.

[0029] Preferably, the lower arm support plate 1 is provided with 2-3 of the strap assemblies 7, thereby effectively ensuring the tightness and stability of the binding between the lower arm support plate 1 and the patient's lower arm 91.

[0030] Correspondingly, the first mounting base 3 includes a first strip mounting plate 31 and a first mounting block 32 fixedly disposed at one end of the first strip mounting plate 31. The first strip mounting plate 31 and the first mounting block 32 are arranged perpendicularly. Specifically, one end of the sliding sleeve 82 is fixedly disposed on the first mounting block 32. The first strip mounting plate 31 is locked and fixed to the bottom of the lower arm support plate 1 by a first fastener 311. The second mounting base 4 includes a second strip mounting plate 41 and a second mounting block 42 fixedly disposed at one end of the second strip mounting plate 41. The second strip mounting plate 41 and the second mounting block 42 are arranged perpendicularly. Specifically, one end of the strip sliding rod 81 is fixedly disposed on the second mounting block 42. The second strip mounting plate 41 is locked and fixed to the bottom of the handle plate 2 by a second fastener 411.

[0031] The above are only some specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A portable wrist joint autonomous rehabilitation exercise traction device, characterized in that: The device includes a lower arm support plate, a hand grip plate, a first mounting base, a second mounting base, a traction drive mechanism, and a one-way self-locking mechanism. The lower arm support plate is used to partially wrap the lower arm and is fixedly installed on the first mounting base. The hand grip plate is used to partially wrap the palm and is fixedly installed on the second mounting base. At least one strap assembly is provided on both the lower arm support plate and the hand grip plate to secure the lower arm and palm respectively. The second mounting base is slidably connected to the first mounting base through a sliding assembly. The traction drive mechanism is used to drive the second mounting base to move relative to the first mounting base. The one-way self-locking mechanism is used to provide one-way self-locking for the movement of the second mounting base and allow the second mounting base to move away from the first mounting base.

2. The portable wrist joint autonomous rehabilitation exercise and traction device according to claim 1, characterized in that: The sliding assembly includes a strip-shaped slide rod and a sliding sleeve. The strip-shaped slide rod is rectangular in shape. The sliding sleeve is fixedly mounted on the first mounting base. The sliding sleeve has a sliding hole that matches the strip-shaped slide rod. One end of the strip-shaped slide rod is fixedly mounted on the second mounting base. The other end of the strip-shaped slide rod passes through the sliding hole and slides in cooperation with the sliding sleeve.

3. A portable wrist joint self-rehabilitation traction device according to claim 2, characterized in that: The traction drive mechanism includes a gear, a rack, and a knob. The rack is fixedly disposed on one side surface of the strip slide bar and arranged along its length. The slide sleeve has a drive hole that communicates with the slide hole and penetrates its upper and lower surfaces. One end of the knob's rotating shaft extends into the drive hole and is rotatably connected to the slide sleeve. The gear is disposed in the drive hole and fixedly installed on the rotating shaft and meshes with the rack.

4. The portable wrist joint autonomous rehabilitation exercise and traction device according to claim 3, characterized in that: An annular limiting block is fixedly provided on the outer circumferential surface of the rotating shaft, which abuts against the lower end face of the sliding sleeve, and a limiting plate is installed on the top end of the rotating shaft, which abuts against the upper end face of the sliding sleeve.

5. The portable wrist joint autonomous rehabilitation exercise and traction device according to claim 3, characterized in that: The one-way self-locking mechanism includes a stop plate and an elastic element. The stop plate is hinged to the sliding sleeve via a hinge shaft, and the two ends of the stop plate form a pressing end and a stopping end, respectively. A stopping point is fixedly provided at the stopping end of the stop plate. A through hole is provided on one side surface of the sliding sleeve, which communicates with the sliding hole and allows the stopping point to pass through. The elastic element is used to always apply an elastic force to the stop plate, so that the stopping point engages with the teeth of the rack.

6. The portable wrist joint autonomous rehabilitation exercise and traction device according to claim 5, characterized in that: The elastic element is a torsion spring, which is sleeved on the hinge shaft. One straight torsion arm of the torsion spring abuts against the lower surface of the pressing end of the stop plate, and the other straight torsion arm of the torsion spring is engaged in the retaining hole of the sliding sleeve.

7. The portable wrist joint autonomous rehabilitation exercise and traction device according to claim 1, characterized in that: The lower arm support plate has a lower arm support cavity, the hand grip plate has a hand grip cavity, and the hand grip plate also has a perforation that allows the thumb to pass through.

8. The portable wrist joint autonomous rehabilitation exercise and traction device according to claim 1, characterized in that: The strap assembly includes a strap, a connecting ring, and Velcro. The strap is installed on one side of the lower arm support plate and the hand grip plate, and the connecting ring is installed on the other side of the lower arm support plate and the hand grip plate. One end of the strap can pass through the connecting ring and be detachably connected to itself by the Velcro.

9. The portable wrist joint autonomous rehabilitation exercise and traction device according to claim 1, characterized in that: The lower arm support plate is provided with 2-3 strap assemblies.

10. A portable wrist joint self-rehabilitation traction device according to claim 1, characterized in that: The first mounting base includes a first strip-shaped mounting plate and a first mounting block fixedly disposed at one end of the first strip-shaped mounting plate. The first strip-shaped mounting plate is locked and fixed to the bottom of the lower arm support plate by a first fastener. The second mounting base includes a second strip-shaped mounting plate and a second mounting block fixedly disposed at one end of the second strip-shaped mounting plate. The second strip-shaped mounting plate is locked and fixed to the bottom of the handle plate by a second fastener.

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