Hand rehabilitation training device

Abstract

The utility model discloses a hand rehabilitation training device which comprises an elastic tensioning piece, a first hinge piece and a second hinge piece. The first hinge piece and the second hinge piece are connected through a hinge shaft. The first hinge piece comprises an extension section; the second hinge piece comprises a cross rod part and a second grip connected to the middle of the cross rod part, one end of the cross rod part is connected to the hinge shaft, the other end of the cross rod part is provided with an adjusting knob, the adjusting knob is provided with a lead screw, the cross rod part is provided with a linear guide groove, and the lead screw is inserted into the linear guide groove at the end of the cross rod part; a sliding block is arranged in the linear guide groove, one end of the tensioning piece is connected to the extension section, and the other end of the tensioning piece is connected to the sliding block. By the adoption of the technical scheme, when the first grip and the second grip are tightly held with force, the first grip and the second grip are folded to be close to each other, meanwhile, the tensioning piece is tensioned to store energy so as to provide reset force relative to the holding force of a patient, and the sliding block connected with one end of the tensioning piece can be adjusted to different positions in the linear guide groove.

Description

Technical Field

[0001] The utility model relates to a hand rehabilitation trainer, belonging to the technical field of medical equipment. Background Art

[0002] Hand rehabilitation training is essential for restoring hand function and improving hand strength, especially after hand surgery, injury or long-term disuse of the hand. Hand rehabilitation training usually includes finger varicose vein training and hand grip training. Finger varicose vein training aims to improve the flexibility and range of motion of the fingers. These trainings help improve the flexion and extension functions of the fingers, and hand grip training aims to enhance the strength and stability of the hand, especially the ability to grasp and pinch. Chinese patent document CN217091968U provides a training device for hand nerve rehabilitation, which can counteract the grip force of the patient's hand through the reset force of the spring to achieve the purpose of repeatedly clenching and training the hand grip. However, due to the different hand grip strengths of different patients, and the inability of this existing training device to adjust the spring, the patient will have the problem of too large or too small reset force of the spring when using it, which affects the rehabilitation training effect. Therefore, it is necessary to design a hand rehabilitation trainer that can adjust the reset force of the tensioning member to adapt to patients with different hand grip strengths. Utility Model Content

[0003] Therefore, the purpose of the utility model is to provide a hand rehabilitation trainer capable of adjusting the magnitude of the restoring force of a tensioning member.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a hand rehabilitation trainer, including an elastic tensioning member and a first hinge member and a second hinge member connected by a hinge shaft; the hinge shaft is located in the middle of the first hinge member, the first hinge member includes a first handle located on one side of the hinge shaft and an extension section located on the other side of the hinge shaft; the second hinge member includes a cross bar portion and a second handle connected to the middle of the cross bar portion, one end of the cross bar portion is connected to the hinge shaft, and the other end is provided with an adjusting knob, a wire rod is provided on the adjusting knob, a linear guide groove is provided on the cross bar portion, the wire rod is inserted into the linear guide groove at the end of the cross bar portion, a slider is provided in the linear guide groove, an internal threaded through hole is provided on the slider, the wire rod passes through the internal threaded through hole, and when the adjusting knob is screwed, the slider can be driven to move in the linear guide groove; one end of the tensioning member is connected to the extension section, and the other end is connected to the slider.

[0005] The tensioning member is an elastic rope.

[0006] A first connecting ear is arranged on the sliding block, and a second connecting ear is arranged on the extension section; the elastic rope is annular and passes through a first through hole arranged on the first connecting ear and a second through hole arranged on the second connecting ear respectively.

[0007] The first connecting ear extends outward in the linear guide groove.

[0008] A clearance groove is arranged at the end of the extension section, the second connecting ear is located in the clearance groove, and there is a gap between the second connecting ear and the side walls on both sides of the clearance groove for the elastic rope to pass through.

[0009] The extended section is arc-shaped.

[0010] A plurality of straight grooves with an arcuate cross section are arranged at intervals on the bottom wall of the linear guide groove, and the extension direction of the straight grooves is perpendicular to the axis of the screw rod; and convex edges matching the straight grooves are arranged on the bottom surface of the slider.

[0011] A plurality of through holes are arranged on the crossbar portion, and a pin hole is arranged on the slider. A locking pin can lock the position of the slider after passing through the through holes and the pin hole.

[0012] By adopting the above technical scheme, with the hand rehabilitation trainer of the utility model, the patient can hold the first handle and the second handle for strength training; when the handle is tightly gripped, the first handle and the second handle are folded close to each other, and at the same time, the tensioning member is tensioned and stores energy to provide a reset force that counteracts the patient's gripping force; since the slider connected to one end of the tensioning member can be adjusted to different positions in the linear guide groove, when the slider is located close to the hinge axis, the patient can use a relatively small gripping force to complete the folding of the first handle and the second handle, and when the slider is located far away from the hinge axis, the patient needs to use a relatively large gripping force to complete the folding of the first handle and the second handle, so that different patients can adjust the position of the slider according to actual needs when using it, so as to achieve better rehabilitation training effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure is a structural schematic diagram of the hand rehabilitation trainer of the present utility model.

[0014] Figure 2 It is a cross-sectional view of the hand rehabilitation trainer of the present utility model. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below through the accompanying drawings and specific implementation methods.

[0016] like Figure 1 , 2 As shown, the utility model provides a hand rehabilitation trainer, comprising an elastic tensioning member 1 and a first hinged member 2 and a second hinged member 3 connected by a hinge shaft 4.

[0017] The hinge shaft 4 is located in the middle of the first hinge 2, and the first hinge 2 includes a first handle 21 located on one side of the hinge shaft 4 and an extension section 22 located on the other side of the hinge shaft 4. In this embodiment, the extension section 22 is arc-shaped, and the middle part thereof is arched away from the second hinge 3.

[0018] The second hinged member 3 includes a crossbar 31 and a second handle 32 connected to the middle of the crossbar 31. A finger ring is formed on the second handle 32 for the patient's finger to pass through. One end of the crossbar 31 is connected to the hinge shaft 4, and the other end is provided with an adjustment knob 33. A threaded rod 34 is provided on the adjustment knob 33. A linear guide groove 311 is provided on the crossbar 31. The threaded rod 34 is inserted into the linear guide groove 311 at the end of the crossbar 31. The two ends of the threaded rod 34 are optical axis parts and are installed on the crossbar 31 through bearings. A slider 35 is provided in the linear guide groove 311. The slider 35 is provided with an internal threaded through hole. The threaded rod 34 passes through the internal threaded through hole. When the adjustment knob 33 is screwed, the slider 35 can be driven to move in the linear guide groove 311. One end of the tensioning member 1 is connected to the end of the extension section 22, and the other end is connected to the slider 35.

[0019] By adopting the above technical solution, the patient can hold the first handle 21 and the second handle 32 for strength training. When the first handle 21 and the second handle 32 are tightly gripped, the first handle 21 and the second handle 32 are folded close to each other, and at the same time, the tensioning member 1 is tensioned and stores energy to provide a reset force that counteracts the patient's grip force. Since the slider 35 connected to one end of the tensioning member 1 can be adjusted to different positions in the linear guide groove 311, when the slider 35 is located close to the hinge shaft 4, the patient can use a relatively small grip force to complete the folding of the first handle 21 and the second handle 32, and when the slider 35 is located far away from the hinge shaft 4, the patient needs to use a relatively large grip force to complete the folding of the first handle 21 and the second handle 32, so that different patients can adjust the position of the slider 35 according to actual needs when using it, so as to achieve better rehabilitation training effects.

[0020] The tensioning member 1 may be a tension spring. In the present embodiment, the tensioning member 1 is an elastic rope to avoid the defect that the gap between the rings of the tension spring may pinch the hand after the tension spring is stretched.

[0021] The slider 35 is provided with a first connecting ear 351, which extends outward from the linear guide groove 311. The extension section 22 is provided with a second connecting ear 221, and a clearance groove 222 is provided at the end of the extension section 22. The second connecting ear 221 is located in the clearance groove 222, and there is a gap 222a for the elastic cord to pass through between the second connecting ear 221 and the side walls of the clearance groove 222. The elastic cord is annular and passes through the first through hole 351a provided on the first connecting ear 351 and the second through hole 221a provided on the second connecting ear 221.

[0022] As an improved method of the utility model, a plurality of straight grooves 311a with an arcuate cross section are arranged at intervals on the bottom wall of the linear guide groove 311, and the extension direction of the straight grooves 311a is perpendicular to the axis of the screw rod 34; a convex rib 352 matching the straight groove 311a is arranged on the bottom surface of the slider 35. When the adjusting knob 33 is turned to adjust the position of the slider 35, the convex rib 352 can move out of one of the straight grooves 311a and enter the adjacent straight groove 311a, thereby forming an effective force feedback; at the same time, when the convex rib 352 is located in the straight groove 311a, it can also prevent the adjusting knob 33 from being easily rotated. When the position of the slider 35 needs to be adjusted, the force of rotating the adjusting knob 33 must be appropriately large to overcome the resistance and move the convex rib 352 out of the straight groove 311a.

[0023] As another improvement of the utility model, a plurality of through holes 310 may be provided on the cross bar portion 31, and a pin hole 353 may be provided on the slider 35. After a locking pin 36 passes through the through holes 310 and the pin holes 353, the slider 35 can be locked in the corresponding position.

[0024] Obviously, the above embodiments are only examples for clear explanation, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention of the utility model.

Claims

1. A hand rehabilitation trainer, characterized in that: It includes an elastic tensioning member and a first hinge member and a second hinge member connected by a hinge axis; the hinge axis is located in the middle of the first hinge member, the first hinge member includes a first handle located on one side of the hinge axis and an extension section located on the other side of the hinge axis; the second hinge member includes a cross bar portion and a second handle connected to the middle of the cross bar portion, one end of the cross bar portion is connected to the hinge axis, and the other end is provided with an adjusting knob, a wire rod is provided on the adjusting knob, a linear guide groove is provided on the cross bar portion, the wire rod is inserted into the linear guide groove at the end of the cross bar portion, a slider is provided in the linear guide groove, an internal threaded through hole is provided on the slider, the wire rod passes through the internal threaded through hole, and when the adjusting knob is turned, the slider can be driven to move in the linear guide groove; one end of the tensioning member is connected to the extension section, and the other end is connected to the slider.

2. The hand rehabilitation trainer according to claim 1, characterized in that: The tensioning member is a tension spring.

3. The hand rehabilitation trainer according to claim 1, characterized in that: The tensioning member is an elastic rope.

4. The hand rehabilitation trainer according to claim 3, characterized in that: A first connecting ear is arranged on the sliding block, and a second connecting ear is arranged on the extension section; the elastic rope is annular and passes through a first through hole arranged on the first connecting ear and a second through hole arranged on the second connecting ear respectively.

5. The hand rehabilitation trainer according to claim 4, characterized in that: The first connecting ear extends outward in the linear guide groove.

6. The hand rehabilitation trainer according to claim 4, characterized in that: A clearance groove is arranged at the end of the extension section, the second connecting ear is located in the clearance groove, and there is a gap between the second connecting ear and the side walls on both sides of the clearance groove for the elastic rope to pass through.

7. The hand rehabilitation trainer according to any one of claims 1 to 6, characterized in that: The extended section is arc-shaped.

8. The hand rehabilitation trainer according to any one of claims 1 to 6, characterized in that: The bottom surface of the slider is provided with a convex ridge matching with the straight groove.

9. The hand rehabilitation trainer according to any one of claims 1 to 6, characterized in that: A plurality of through holes are arranged on the crossbar portion, and a pin hole is arranged on the slider. A locking pin can lock the position of the slider after passing through the through holes and the pin hole.

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