Multifunctional wrist joint rehabilitation training device
By designing a multifunctional wrist joint rehabilitation training device, which provides load components covering various movement modes of the wrist joint, the problem of the single movement trajectory of existing devices is solved, the strength training needs in the later postoperative period are met, and the convenience and effectiveness of rehabilitation training are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 山西医科大学第二医院(山西医科大学第二临床医学院)
- Filing Date
- 2026-04-17
- Publication Date
- 2026-06-05
AI Technical Summary
Existing wrist joint rehabilitation training devices have a single movement trajectory, which cannot cover the three core movement modes of the wrist joint and cannot meet the strength training needs in the later postoperative period.
A multifunctional wrist joint rehabilitation training device was designed. The first load component provides load for flexion and extension, radial deviation and ulnar deviation movements, and the second load component provides load for pronation and supination movements, covering the full-dimensional rehabilitation training of the wrist joint and realizing muscle strength training.
It meets the strength training needs of patients in the later postoperative period and improves the convenience and effectiveness of wrist joint rehabilitation training.
Smart Images
Figure CN122140480A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of assistive rehabilitation equipment technology, and in particular to a multifunctional wrist joint rehabilitation training device. Background Technology
[0002] The wrist joint, as one of the most frequently used joints in the human upper limbs, bears important functions such as weight-bearing, grasping, and rotation. Its health directly affects daily life. In clinical practice, after surgery for wrist fractures, ligament injuries, and tendon repair, patients need to undergo scientific and standardized rehabilitation training to gradually restore wrist joint flexibility and muscle strength, ultimately achieving functional recovery of the wrist joint.
[0003] Wrist joint postoperative rehabilitation is generally divided into two stages. In the early postoperative stage, the tissues around the wrist joint are still in the repair and healing stage. At this time, the core goal of rehabilitation is to maintain joint flexibility and prevent tissue adhesion. Rehabilitation training is mainly passive movement, without the need to apply extra load for training. As rehabilitation progresses into the later stage, strength training needs to be gradually carried out so that the muscle groups around the wrist joint can gradually recover.
[0004] Wrist joint movements mainly consist of three core forms: flexion and extension, radial and ulnar deviation, and pronation and supination. Flexion and extension refer to the up-and-down swinging of the wrist joint along a direction perpendicular to the forearm; flexion refers to the movement of the palm bending towards the palm, while extension refers to the movement of the palm bending towards the back of the hand. Radial and ulnar deviation refer to the left-and-right swinging of the wrist joint along a direction perpendicular to the forearm; radial deviation is the swinging of the wrist towards the thumb side, while ulnar deviation is the swinging of the wrist towards the little finger side. Pronation and supination refer to the rotational movement of the wrist around the axis of the forearm; pronation is the rotation of the forearm so that the palm faces down, while supination is the rotation of the forearm so that the palm faces up.
[0005] Existing wrist joint rehabilitation training devices are mostly based on passive rehabilitation training. Their structural design relies heavily on motor drive to move the wrist. On the one hand, the motor-driven passive training method can only provide activity assistance to the wrist joint and cannot achieve muscle strength training through load, thus failing to meet the strength training needs in the later postoperative period. On the other hand, the existing rehabilitation training devices have a single movement trajectory and cannot cover the three core movement forms mentioned above, thus failing to meet the clinical needs for comprehensive wrist joint rehabilitation and causing inconvenience to patients' postoperative wrist joint rehabilitation training. Summary of the Invention
[0006] To facilitate postoperative rehabilitation training of the wrist joint, this application provides a multifunctional wrist joint rehabilitation training device.
[0007] This application provides a multifunctional wrist joint rehabilitation training device, which adopts the following technical solution: A multifunctional wrist joint rehabilitation training device includes a fixing plate with a strap on it; a rotating plate rotatably mounted on the fixing plate, and a mounting ring fixedly mounted on the rotating plate; an annular groove on the inner sidewall of the mounting ring; a handle on the mounting ring, one end of which is located within the annular groove and slidably connected to the mounting ring; a fixing component on the mounting ring for fixing the handle to the mounting ring; a first load component between the fixing plate and the rotating plate for providing load for wrist joint flexion and extension, radial and ulnar deviation movements; and a second load component on the mounting ring for providing load for wrist joint pronation and supination movements.
[0008] Optionally, the mounting ring has two fixing grooves, the axes of the two fixing grooves are perpendicular to each other, and the fixing grooves communicate with the annular groove; two sets of fixing components are provided, each corresponding to one of the fixing grooves, and the fixing components include a first support platform, a first trapezoidal platform and a second trapezoidal platform; the first support platform is fixedly disposed in the fixing groove; the first trapezoidal platform is fixedly disposed on the first support platform; the second trapezoidal platform is slidably disposed on the first support platform; a control component is provided on the grip, the control component being used to control the connection state between the grip and the first support platform.
[0009] Optionally, the control component includes a button, a first spring, a wedge block, and a second spring; the button passes through the grip and is slidably connected to the grip; the grip has a hollow internal structure; the first spring is located inside the grip, and its two ends are fixedly connected to the button and the grip, respectively; a control groove is formed at one end of the button near the annular groove, and the control groove is adapted to the first trapezoidal platform and the second trapezoidal platform; a slot is formed on the side wall of the control groove; the wedge block is slidably disposed in the slot; the second spring is located in the slot, and its two ends are fixedly connected to the wedge block and the button, respectively.
[0010] Optionally, the first load assembly includes a fixed roller, a support roller, a first elastic band, and a disassembly / assembly component; two fixed rollers are provided and are respectively connected to the fixed plate and the rotating plate; two support rollers are provided and are located between the two fixed rollers, and the two support rollers are respectively rotatably connected to the fixed plate and the rotating plate; the two ends of the first elastic band are respectively fixedly connected to the two fixed rollers; the disassembly / assembly component is provided on the fixed roller and is used to disassemble and assemble the fixed roller.
[0011] Optionally, the first load assembly further includes mounting blocks, of which two are provided, each corresponding to one of the two fixed rollers. The two mounting blocks are respectively fixedly connected to the fixed plate and the rotating plate, and each mounting block has two mounting holes. Two sets of disassembly / assembly components are provided, each corresponding to one of the two mounting blocks. Each disassembly / assembly component includes a connecting rod, a third spring, and a pressure plate. Connecting grooves are provided at both ends of each fixed roller, each corresponding to one of the mounting holes. Two connecting rods are provided, each corresponding to one of the connecting grooves. The connecting rods are slidably disposed within the connecting grooves and are adapted to the mounting holes, passing through the mounting holes. Two third springs are provided, each corresponding to one of the connecting grooves, and both ends of the third springs are respectively fixedly connected to the connecting rods and the fixed rollers. Two pressure plates are provided, each corresponding to one of the connecting rods, and each pressure plate is fixedly connected to the connecting rod.
[0012] Optionally, the second load assembly includes a connecting roller, an adjusting roller, a second elastic band, a connecting component, and an adjusting component; a guide groove is provided on the mounting ring, and the guide groove communicates with the annular groove; the end of the connecting roller is slidably disposed in the guide groove; the adjusting roller is connected to the mounting ring; both ends of the second elastic band are fixedly connected to the connecting roller and the adjusting roller, respectively; the connecting component is disposed on the connecting roller and is used to connect the connecting roller and the button; the adjusting component is disposed on the adjusting roller and is used to adjust the elasticity of the second elastic band.
[0013] Optionally, the connecting component includes a second support platform, a third trapezoidal platform, and a fourth trapezoidal platform; the second support platform is slidably disposed within the annular groove and fixedly connected to the connecting roller; the third trapezoidal platform is fixedly disposed on the second support platform; the fourth trapezoidal platform is slidably disposed on the second support platform; both the third and fourth trapezoidal platforms are adapted to the control groove.
[0014] Optionally, the adjusting component includes an adjusting rod, a square block, and a knob; the adjusting roller is rotatably connected to the mounting ring, the adjusting rod is coaxially fixedly connected to the adjusting roller, and the adjusting rod is rotatably mounted on the mounting ring; the square block is slidably mounted on the adjusting rod; the mounting ring is provided with an adjusting groove, which is adapted to the square block; and the knob is fixedly mounted on the square block.
[0015] Optionally, the mounting ring is provided with a positioning component, which includes a first magnetic block and a second magnetic block; the first magnetic block is fixedly mounted on the grip; three second magnetic blocks are provided, two of which correspond to two of the first support platforms, and the other second magnetic block corresponds to the second support platform; there is a mutual attraction between the first magnetic block and the second magnetic block.
[0016] Optionally, a retaining ring is coaxially rotatably provided on the mounting ring, the retaining ring being located at the opening of the annular groove and fixedly connected to the handle.
[0017] In summary, this application includes at least one of the following beneficial technical effects: This application provides load for wrist flexion and extension, radial and ulnar deviation movements through a first load component, and for pronation and supination movements through a second load component, covering all dimensions of wrist joint rehabilitation training. This meets the postoperative strength training needs of patients and solves the problem of existing devices having a single movement trajectory and being unable to accommodate multi-directional training. Simultaneously, this application achieves wrist joint strength training through load application, adapting to the postoperative muscle strength recovery needs and improving the convenience for patients to perform postoperative wrist joint rehabilitation training. Attached Figure Description
[0018] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a cross-sectional view of the annular groove, as shown in this embodiment of the application. Figure 3 This is a cross-sectional view of the positioning component in an embodiment of this application; Figure 4 yes Figure 2 A magnified view of a section at point A in the middle; Figure 5 This is a cross-sectional view of the disassembled components in this embodiment of the application; Figure 6 yes Figure 2 A magnified view of a section at point B in the middle; Figure 7 This is a cross-sectional view of the adjustment component in this embodiment of the application.
[0019] Explanation of reference numerals in the attached figures: 1. Fixing plate; 11. Straps; 12. Rotating plate; 2. Mounting ring; 21. Annular groove; 22. Handle; 23. Fixing groove; 24. Guide groove; 25. Adjusting groove; 26. Retaining ring; 31. First support platform; 32. First trapezoidal platform; 33. Second trapezoidal platform; 41. Fixed roller; 411. Connecting groove; 42. Support roller; 43. First elastic band; 44. Mounting block; 441. Mounting hole; 45. Connecting rod; 46. Third spring; 47. Pressure plate; 51. Connecting roller; 52. Adjusting roller; 53. Second elastic band; 54. Second support platform; 55. Third trapezoidal platform; 56. Fourth trapezoidal platform; 57. Adjusting rod; 58. Square block; 59. Knob; 61. Button; 611. Control slot; 612. Slot; 62. Wedge block; 63. First spring; 64. Second spring; 71. First magnetic block; 72. Second magnetic block. Detailed Implementation
[0020] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.
[0021] This application discloses a multifunctional wrist joint rehabilitation training device. (Refer to...) Figure 1 The multifunctional wrist joint rehabilitation training device includes a fixation plate 1 with an arc-shaped arm support that conforms to the structure of the forearm. A strap 11 with Velcro closures is also provided on the fixation plate 1 to secure the arm to the fixation plate 1. It should be noted that the strap 11 should be fixed to the end of the patient's forearm near the elbow joint to prevent interference with pronation and supination rehabilitation exercises.
[0022] Reference Figure 1 and Figure 2 A rotating plate 12 is rotatably mounted on one end of the fixed plate 1, with its rotation axis perpendicular to the length direction of the fixed plate 1. A mounting ring 2 is fixedly mounted on the rotating plate 12, with its axis parallel to the length direction of the fixed plate 1.
[0023] Reference Figure 2 and Figure 3 An annular groove 21 is provided on the inner wall of the mounting ring 2, and the cross-section of the annular groove 21 is T-shaped.
[0024] A handle 22 is provided on the mounting ring 2. One end of the handle 22 is a T-shaped structure that fits into the annular groove 21, and this T-shaped structure is slidably disposed within the annular groove 21, allowing the handle 22 to rotate around the axis of the mounting ring 2 along the annular groove 21. A retaining ring 26 is coaxially rotatably disposed on the mounting ring 2. The retaining ring 26 is located at the opening of the annular groove 21 and is fixedly connected to the handle 22. The retaining ring 26 can block the opening of the annular groove 21 to prevent dust and impurities from entering the annular groove 21 and affecting the sliding of the handle 22, and at the same time prevent the patient's hand from being trapped in the annular groove 21, thereby improving the safety of the device.
[0025] Reference Figure 2The mounting ring 2 has two fixing grooves 23, which are connected to the annular groove 21. One fixing groove 23 has its axis set vertically, and the other fixing groove 23 has its axis set horizontally. These correspond to the fixed positions of the handle 22 in the horizontal and vertical directions, respectively.
[0026] Reference Figure 2 and Figure 4 The mounting ring 2 is equipped with two sets of fixing components, each corresponding to a fixing groove 23. Each fixing component includes a first support platform 31, a first trapezoidal platform 32, and a second trapezoidal platform 33. The first support platform 31 is coaxially fixed within the fixing groove 23. The first trapezoidal platform 32 is coaxially fixed at one end of the first support platform 31 near the annular groove 21, with its inclined surface located on the side closest to the annular groove 21. The second trapezoidal platform 33 is slidably mounted on the first support platform 31, with its sliding axis aligned with the axis of the fixing groove 23. The inclined surface of the second trapezoidal platform 33 is located on the side furthest from the annular groove 21.
[0027] A control assembly is provided on the grip 22, including a button 61, a first spring 63, a wedge block 62, and a second spring 64. The button 61 is coaxially mounted on the grip 22 and slidably connected to it, with the sliding direction being the same as the length direction of the grip 22. The grip 22 has a hollow internal structure. The first spring 63 is located inside the grip 22, and its two ends are fixedly connected to the button 61 and the grip 22, respectively. Under normal conditions, the first spring 63 is in a naturally extended state, pushing the button 61 to remain extended. A control groove 611 is formed at the end of the button 61 near the annular groove 21, and the control groove 611 is adapted to the first trapezoidal platform 32 and the second trapezoidal platform 33. The control groove 611 has symmetrical slots 612 on both side walls. Two wedge blocks 62 are provided, each corresponding to one of the slots 612. The wedge blocks 62 are slidably disposed within the slots 612 and can move along the depth direction of the slots 612. The wedge-shaped surface of the wedge block 62 is located on the side of the wedge block 62 away from the slot 612 and also on the side of the wedge block 62 closer to the fixing groove 23. Two second springs 64 are provided, each corresponding to one of the slots 612. The second springs 64 are located within the slots 612, and their two ends are fixedly connected to the wedge block 62 and the button 61, respectively. Under normal conditions, the second springs 64 push the wedge-shaped end of the wedge block 62 out of the slot 612.
[0028] Reference Figure 1 and Figure 5A first load assembly is provided between the fixed plate 1 and the rotating plate 12. The first load assembly includes a mounting block 44, a fixed roller 41, a first elastic band 43, a support roller 42, and a disassembly / removal component. Two mounting blocks 44 are provided, fixedly mounted on the fixed plate 1 and the rotating plate 12 respectively, and located on the side of the fixed plate 1 and the rotating plate 12 away from the strap 11 and the mounting ring 2. Two mounting holes 441 are provided on the mounting blocks 44. Two fixed rollers 41 are provided, corresponding to the fixed plate 1 and the rotating plate 12 respectively. The two ends of the first elastic band 43 are fixedly connected to the two fixed rollers 41 respectively. Two support rollers 42 are provided, both located between the two fixed rollers 41, and rotatably connected to the fixed plate 1 and the rotating plate 12 respectively. The axes of the fixed rollers 41 and the support rollers 42 are parallel. The support rollers 42 support the first elastic band 43, preventing friction between the first elastic band 43 and the fixed plate 1 and the rotating plate 12 during movement, thereby reducing wear on the first elastic band 43.
[0029] There are two sets of disassembly and assembly components, each corresponding to one of the two mounting blocks 44. Each set of disassembly and assembly components includes a connecting rod 45, a third spring 46, and a pressure plate 47. Both ends of the fixed roller 41 are provided with connecting grooves 411, which correspond one-to-one with the mounting holes 441. There are two connecting rods 45, each corresponding to one of the connecting grooves 411. One end of the connecting rod 45 passes through the connecting groove 411 and is slidably connected to it. The sliding direction is the same as the depth direction of the connecting groove 411. The outer diameter of the connecting rod 45 is adapted to the inner diameter of the mounting hole 441, allowing it to be inserted into the mounting hole 441 to connect the fixed roller 41 and the mounting block 44. Two third springs 46 are provided, each corresponding to a connecting groove 411. The third spring 46 is located within the connecting groove 411, and its two ends are fixedly connected to the connecting rod 45 and the fixed roller 41, respectively. Under normal conditions, the third spring 46 pushes the connecting rod 45 out of the connecting groove 411 and into the mounting hole 441, maintaining the fixed state of the fixed roller 41 and the mounting block 44. Two pressure plates 47 are provided, each corresponding to a connecting rod 45. The pressure plate 47 is fixedly connected to the connecting rod 45, and its surface is provided with anti-slip texture.
[0030] In use, pressing the pressure plate 47 will cause the connecting rod 45 to retract into the connecting groove 411 against the elastic force of the third spring 46, disengaging it from the mounting hole 441. This allows for the quick disassembly of the fixed roller 41, thereby disassembling the first elastic band 43. Then, depending on the patient's condition, a first elastic band 43 with different elasticity can be selected and installed. During installation, pressing the pressure plates 47 at both ends of the fixed roller 41 will cause the connecting rod 45 to retract into the connecting groove 411 against the elastic force of the third spring 46. The user then aligns the fixed roller 41 connected to the selected first elastic band 43 coaxially with the mounting hole 441, and then releases the pressure plate 47. The third spring 46 pushes the connecting rod 45 into the mounting hole 441, thus fixing the fixed roller 41 onto the mounting block 44. Repeating the above process, after fixing the fixed rollers 41 at both ends of the selected first elastic band 43, the replacement of the first elastic band 43 is complete.
[0031] When the first elastic band 43 is in a relaxed state, the rotating plate 12 is located on the side of the fixed plate 1 away from the strap 11, and the rotating plate 12 and the fixed plate 1 form a certain angle. The size of the angle depends on the elasticity of the first elastic band 43. During rehabilitation training, the patient drives the rotating plate 12 to swing back and forth relative to the fixed plate 1. During the movement of the rotating plate 12, the fixed rollers 41 mounted on the rotating plate 12 will move synchronously, causing the first elastic band 43, which is fixed at both ends to the two fixed rollers 41, to be stretched. The elastic deformation of the first elastic band 43 generates a reverse pulling force, providing a stable load for wrist joint movement.
[0032] Reference Figure 3 Guide grooves 24 are provided on the two opposite inner sidewalls of the annular groove 21. The guide grooves 24 are arranged along the circumference of the annular groove 21 and are connected to the annular groove 21.
[0033] Reference Figure 2 and Figure 6 A second load assembly is provided on the mounting ring 2, which includes a connecting roller 51, an adjusting roller 52, a second elastic band 53, a connecting component, and an adjusting component. The two ends of the connecting roller 51 are slidably disposed within two guide grooves 24, respectively. The adjusting roller 52 is rotatably disposed on the mounting ring 2, with its axis parallel to the axis of the mounting ring 2. The two ends of the second elastic band 53 are fixedly connected to the connecting roller 51 and the adjusting roller 52, respectively. In the initial state, under the action of the second elastic band 53, the connecting roller 51 is located at the end of the guide groove 24 closest to the adjusting roller 52.
[0034] The connecting components include a second support platform 54, a third trapezoidal platform 55, and a fourth trapezoidal platform 56. The second support platform 54 is slidably disposed within the annular groove 21 via a slider and is fixedly connected to the connecting roller 51. The second support platform 54 can move along the guide groove 24 with the connecting roller 51, and its axial direction is radially aligned with the mounting ring 2. The third trapezoidal platform 55 is coaxially fixed at one end of the second support platform 54 near the center of the mounting ring 2, and its structure is identical to that of the first trapezoidal platform 32. The fourth trapezoidal platform 56 is slidably disposed on the second support platform 54. Both the third trapezoidal platform 55 and the fourth trapezoidal platform 56 are adapted to the control groove 611 at the bottom of the button 61.
[0035] When the handle 22 is rotated to a vertical position and coaxially aligned with the fixing groove 23 at that position (for ease of understanding, this position is referred to as the first position), the user presses button 61, causing button 61 to overcome the elastic force of the first spring 63 and move towards the square shape of the fixing groove 23 at the first position, entering the fixing groove 23. During the movement, the wedge-shaped surface of the wedge block 62 will abut against the top inclined surface of the first trapezoidal platform 32 at the first position. Under the action of the first trapezoidal platform 32, the wedge block 62 overcomes the elastic force of the second spring 64 and retracts into the slot 612 until the wedge block 62 moves between the first trapezoidal platform 32 and the second trapezoidal platform 33. At this time, under the action of the second spring 64, the wedge block 62 extends out of the slot 612 again and engages between the first trapezoidal platform 32 and the second trapezoidal platform 33, thereby putting the handle 22 and the first support platform 31 in a relatively fixed state. At this time, when the patient releases button 61, the handle 22 will not rotate relative to the mounting ring 2.
[0036] When the user presses button 61 again, button 61 continues to move downward against the elastic force of the first spring 63. During the movement, the wedge-shaped surface of the wedge block 62 abuts against the top of the second trapezoidal platform 33 at the first position. Under the action of the second trapezoidal platform 33, the wedge block 62 retracts into the slot 612 against the elastic force of the second spring 64 until the wedge block 62 moves to the side of the second trapezoidal platform 33 away from the first trapezoidal platform 32. At this time, the user releases button 61, and under the elastic force of the first spring 63, button 61 moves away from the fixing slot 23. During the movement... In the middle, the wedge block 62 abuts against the second trapezoidal platform 33, thereby driving the second trapezoidal platform 33 to move synchronously until the second trapezoidal platform 33 abuts against the first trapezoidal platform 32. At this time, the second trapezoidal platform 33 can no longer move, while the button 61 continues to move. Under the action of the inclined surface at the bottom of the second trapezoidal platform 33, the wedge block 62 overcomes the elastic force of the second spring 64 and retracts into the slot 612 until the wedge block 62 moves to the side of the first trapezoidal platform 32 away from the fixed slot 23. At this time, the button 61 disengages from the first support platform 31, and the handle 22 can rotate relative to the mounting ring 2.
[0037] When the handle 22 is rotated to a horizontal position and coaxially aligned with the fixing groove 23 at that position (for ease of understanding, this position is referred to as the second position), pressing button 61 will fix the handle 22 and the first support platform 31 at the second position. Pressing button 61 again will disengage the handle 22 from the first support platform 31 at the second position, allowing the handle 22 to rotate relative to the mounting ring 2. The working principle is the same as the locking and unlocking principle of the handle 22 in the first position, and will not be elaborated here.
[0038] When the handle 22 is rotated to be coaxially aligned with the second support platform 54 (for ease of understanding, this position is referred to as the third position), pressing button 61 will fix the handle 22 and the second support platform 54 in a relatively fixed state. Pressing button 61 again will disengage the handle 22 from the second support platform 54, allowing the handle 22 to rotate relative to the mounting ring 2. The working principle is the same as the locking and unlocking principle of the handle 22 in the first position, and will not be elaborated here.
[0039] When the grip 22 and the second support platform 54 are in a relatively fixed state, the rotation of the grip 22 will cause the second support platform 54 to move, thereby causing the connecting roller 51 to move and stretching the second elastic band 53. The stretching deformation of the second elastic band 53 provides load for the pronation and supination movements of the wrist joint. When the grip 22 is disengaged from the second support platform 54, under the action of the second elastic band 53, the connecting roller 51 returns to the end of the guide groove 24 near the adjusting roller 52, and the second support platform 54 also returns to its original position.
[0040] Reference Figure 2 and Figure 7 The adjusting components include an adjusting rod 57, a square block 58, and a knob 59. The adjusting rod 57 is rotatably connected to the mounting ring 2 and coaxially fixedly connected to the adjusting roller 52. The square block 58 is slidably fitted onto the adjusting rod 57 via a connecting key and a keyway, and slides along the axial direction of the adjusting rod 57. An adjusting groove 25 is provided on the outer wall of the mounting ring 2. The adjusting groove 25 has a square structure and is adapted to fit the square block 58. The knob 59 is fixedly located at the end of the square block 58 away from the adjusting rod 57, and its surface is provided with anti-slip textures for easy rotation operation. It should be noted that there is friction between the square block 58 and the adjusting groove 25, and the square block 58 will not slide out of the adjusting groove 25 when not subjected to external force.
[0041] When in use, the operator can pull the knob 59 outward to move the square block 58 along the axial direction of the adjusting rod 57, disengaging it from the adjusting groove 25 of the mounting ring 2. At this time, the adjusting rod 57 is no longer fixed. Then, the knob 59 is rotated, thereby causing the adjusting rod 57 and the adjusting roller 52 to rotate synchronously. When the adjusting roller 52 rotates in the forward direction, the second elastic band 53 will wrap around the adjusting roller 52, thereby increasing the elasticity of the second elastic band 53. When the adjusting roller 52 rotates in the reverse direction, the second elastic band 53 is released from the adjusting roller 52, thereby decreasing the elasticity of the second elastic band 53. After adjusting the second elastic band 53 to a suitable strength according to the patient's recovery, the operator moves the knob 59 along the axial direction of the adjusting rod 57 to make the square block 58 embed into the adjusting groove 25, thereby fixing the adjusting roller 52 and the adjusting rod 57, and completing the adjustment of the elasticity of the second elastic band 53.
[0042] Reference Figure 3 The annular groove 21 has guide grooves 24 on its two opposing inner sidewalls. The guide grooves 24 are arranged along the circumference of the annular groove 21 and communicate with it. A positioning assembly is provided on the mounting ring 2, which includes a first magnetic block 71 and a second magnetic block 72. The first magnetic block 71 is fixedly embedded in the handle 22. Three second magnetic blocks 72 are provided, all fixedly embedded inside the mounting ring 2. Two of the second magnetic blocks 72 correspond to the positions of the two first support platforms 31, and the third second magnetic block 72 corresponds to the position of the second support platform 54. There is a mutual attraction between the first magnetic blocks 71 and the second magnetic blocks 72. When the handle 22 rotates to the position of the second magnetic block 72, the first magnetic block 71 and the corresponding second magnetic block 72 attract each other, achieving initial positioning, making it easy for the user to move the handle 22 to a position where the first support platform 31 and the second support platform 54 are coaxially aligned. It should be noted that the magnetic force between the first magnetic block 71 and the second magnetic block 72 is relatively weak. When the patient moves the handle 22 to the position of the second magnetic block 72, there will be a certain tactile sensation to remind the patient, but it will not affect the rehabilitation training.
[0043] The implementation principle of a multifunctional wrist joint rehabilitation training device according to an embodiment of this application is as follows: When patients are doing strength training in the later stages after surgery, they should choose to replace the corresponding first elastic band 43 and adjust the elasticity of the second elastic band 53 according to their own rehabilitation training.
[0044] Then, the patient places their forearm against the inner arc of the fixation plate 1, wraps the forearm with the strap 11, and adjusts the Velcro to secure the fixation plate 1 to the forearm. The patient then grips the handle 22 to complete the donning process. After donning, the patient can select the appropriate exercise based on their training needs.
[0045] During radial and ulnar deviation training, the patient rotates the handle 22 to the first position based on the mutual attraction between the first magnet 71 and the second magnet 72, and then presses the button 61 to make the handle 22 and the first support platform 31 relatively fixed. At this time, when the patient releases the button 61, the handle 22 will not rotate relative to the mounting ring 2.
[0046] At this time, the patient drives the rotating plate 12 to slowly swing back and forth relative to the fixed plate 1. During the swinging process, the rotating plate 12 will drive the fixed roller 41 installed on the rotating plate 12 to move synchronously, so that the first elastic band 43 is stretched. At this time, the wrist joint swings in the direction close to the thumb or little finger, thereby training the radial and ulnar deviation of the patient's wrist joint.
[0047] During flexion and extension training, the patient rotates the handle 22 to the second position based on the mutual attraction between the first magnet 71 and the second magnet 72, and then presses the button 61 to fix the handle 22 and the first support platform 31 in the second position. Then the patient releases the button 61, at which point the handle 22 will not rotate relative to the mounting ring 2.
[0048] At this time, the patient drives the rotating plate 12 to slowly swing back and forth relative to the fixed plate 1. During the swinging process, the rotating plate 12 will drive the fixed roller 41 installed on the rotating plate 12 to move synchronously, so that the first elastic band 43 is stretched. At this time, the wrist joint swings towards the palm or back of the hand, thereby performing flexion and extension training on the patient's wrist joint.
[0049] It should be noted that when the patient swings the rotating plate 12 toward the side of the fixed plate 1 away from the strap 11, since the direction of rotation is the same as the direction of the tension of the first elastic band 43, the patient needs to actively overcome the tension of the first elastic band 43 so that the rotating plate 12 swings slowly, thus ensuring the training effect on the wrist joint.
[0050] During pronation and supination training, the user first removes the first elastic band 43, so that the fixed plate 1 and the rotating plate 12 are in the same plane. Then, based on the mutual attraction between the first magnet 71 and the second magnet 72, the patient rotates the handle 22 to the third position and presses the button 61 to fix the handle 22 and the second support platform 54 in a relatively fixed state. Then, the patient releases the button 61. At this time, when the patient rotates the handle 22, it will stretch the second elastic band 53. At this time, the wrist joint rotates around the forearm axis, thereby training the patient's wrist joint in pronation and supination.
[0051] Similarly, when the patient moves the connecting roller 51 toward the adjusting roller 52, since the direction of movement is the same as the direction of the tension of the second elastic band 53, the patient needs to actively overcome the tension of the second elastic band 53, so that the connecting roller 51 moves slowly, ensuring the training effect on the wrist joint.
[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A multifunctional wrist joint rehabilitation training device, comprising a fixing plate (1), wherein a strap (11) is provided on the fixing plate (1); a rotating plate (12) is rotatably provided on the fixing plate (1), characterized in that: A mounting ring (2) is fixedly provided on the rotating plate (12); an annular groove (21) is provided on the inner side wall of the mounting ring (2); a handle (22) is provided on the mounting ring (2), one end of the handle (22) is located in the annular groove (21) and is slidably connected to the mounting ring (2); a fixing component is provided on the mounting ring (2), which is used to fix the handle (22) to the mounting ring (2); a first load component is provided between the fixing plate (1) and the rotating plate (12), which is used to provide load for the flexion and extension, radial deviation and ulnar deviation of the wrist joint; a second load component is provided on the mounting ring (2), which is used to provide load for the pronation and supination of the wrist joint.
2. The multifunctional wrist joint rehabilitation training device according to claim 1, characterized in that: The mounting ring (2) has two fixing grooves (23) with their axes perpendicular to each other. The fixing grooves (23) are connected to the annular groove (21). Two sets of fixing components are provided, each corresponding to one of the fixing grooves (23). The fixing components include a first support platform (31), a first trapezoidal platform (32), and a second trapezoidal platform (33). The first support platform (31) is fixedly disposed in the fixing groove (23). The first trapezoidal platform (32) is fixedly disposed on the first support platform (31). The second trapezoidal platform (33) is slidably disposed on the first support platform (31). A control component is provided on the handle (22), which is used to control the connection state between the handle (22) and the first support platform (31).
3. The multifunctional wrist joint rehabilitation training device according to claim 2, characterized in that: The control component includes a button (61), a first spring (63), a wedge block (62), and a second spring (64); the button (61) is mounted on the grip (22) and slidably connected to the grip (22); the grip (22) has a hollow internal structure; the first spring (63) is located inside the grip (22), and its two ends are fixedly connected to the button (61) and the grip (22) respectively; the button (61) is close to the annular groove. (21) has a control groove (611) at one end, which is adapted to the first trapezoidal platform (32) and the second trapezoidal platform (33); a slot (612) is provided on the side wall of the control groove (611); the wedge block (62) is slidably disposed in the slot (612); the second spring (64) is located in the slot (612), and the two ends of the second spring (64) are fixedly connected to the wedge block (62) and the button (61) respectively.
4. The multifunctional wrist joint rehabilitation training device according to claim 1, characterized in that: The first load assembly includes a fixed roller (41), a support roller (42), a first elastic band (43), and a disassembly / assembly component; there are two fixed rollers (41), which are respectively connected to the fixed plate (1) and the rotating plate (12); there are two support rollers (42), which are located between the two fixed rollers (41), and the two support rollers (42) are rotatably connected to the fixed plate (1) and the rotating plate (12) respectively; the two ends of the first elastic band (43) are respectively fixedly connected to the two fixed rollers (41); the disassembly / assembly component is provided on the fixed roller (41), and the disassembly / assembly component is used to disassemble and assemble the fixed roller (41).
5. The multifunctional wrist joint rehabilitation training device according to claim 4, characterized in that: The first load assembly further includes mounting blocks (44), two of which are provided and correspond one-to-one with the two fixed rollers (41). The two mounting blocks (44) are fixedly connected to the fixed plate (1) and the rotating plate (12) respectively. Two mounting holes (441) are provided on the mounting blocks (44). Two sets of disassembly and assembly components are provided and correspond one-to-one with the two mounting blocks (44). The disassembly and assembly components include a connecting rod (45), a third spring (46), and a pressure plate (47). Both ends of the fixed rollers (41) are provided with connecting grooves (411), and the connecting grooves (411) correspond one-to-one with the mounting holes (441). Two connecting rods (45) are provided, each corresponding to one of the connecting grooves (411). The connecting rods (45) are slidably disposed in the connecting grooves (411). The connecting rods (45) are adapted to the mounting holes (441) and pass through the mounting holes (441). Two third springs (46) are provided, each corresponding to one of the connecting grooves (411). The two ends of the third springs (46) are fixedly connected to the connecting rods (45) and the fixed rollers (41), respectively. Two pressure plates (47) are provided, each corresponding to one of the connecting rods (45). The pressure plates (47) are fixedly connected to the connecting rods (45).
6. The multifunctional wrist joint rehabilitation training device according to claim 3, characterized in that: The second load assembly includes a connecting roller (51), an adjusting roller (52), a second elastic band (53), a connecting component, and an adjusting component; a guide groove (24) is provided on the mounting ring (2), and the guide groove (24) communicates with the annular groove (21); the end of the connecting roller (51) is slidably disposed in the guide groove (24); the adjusting roller (52) is connected to the mounting ring (2); both ends of the second elastic band (53) are fixedly connected to the connecting roller (51) and the adjusting roller (52) respectively; the connecting component is disposed on the connecting roller (51) and is used to connect the connecting roller (51) and the button (61); the adjusting component is disposed on the adjusting roller (52) and is used to adjust the elasticity of the second elastic band (53).
7. The multifunctional wrist joint rehabilitation training device according to claim 6, characterized in that: The connecting component includes a second support platform (54), a third trapezoidal platform (55), and a fourth trapezoidal platform (56); the second support platform (54) is slidably disposed in the annular groove (21) and fixedly connected to the connecting roller (51); the third trapezoidal platform (55) is fixedly disposed on the second support platform (54); the fourth trapezoidal platform (56) is slidably disposed on the second support platform (54); both the third trapezoidal platform (55) and the fourth trapezoidal platform (56) are adapted to the control groove (611).
8. The multifunctional wrist joint rehabilitation training device according to claim 6, characterized in that: The adjusting component includes an adjusting rod (57), a square block (58), and a knob (59); the adjusting roller (52) is rotatably connected to the mounting ring (2), the adjusting rod (57) is coaxially fixedly connected to the adjusting roller (52), and the adjusting rod (57) is rotatably mounted on the mounting ring (2); the square block (58) is slidably mounted on the adjusting rod (57); the mounting ring (2) is provided with an adjusting groove (25), which is adapted to the square block (58); the knob (59) is fixedly mounted on the square block (58).
9. The multifunctional wrist joint rehabilitation training device according to claim 7, characterized in that: The mounting ring (2) is provided with a positioning component, which includes a first magnetic block (71) and a second magnetic block (72); the first magnetic block (71) is fixedly mounted on the handle (22); there are three second magnetic blocks (72), two of which correspond to two of the first support platforms (31), and the other second magnetic block (72) corresponds to the second support platform (54); there is a mutual attraction between the first magnetic block (71) and the second magnetic block (72).
10. The multifunctional wrist joint rehabilitation training device according to claim 1, characterized in that: A retaining ring (26) is coaxially rotatably provided on the mounting ring (2). The retaining ring (26) is located at the opening of the annular groove (21) and is fixedly connected to the handle (22).