Hand joint rehabilitation training device

Abstract

The application relates to the technical field of hand rehabilitation, in particular to a hand joint rehabilitation training device, which comprises a base, detection devices and two groups of symmetrically arranged side frames arranged on the base; a supporting roller arranged between the two groups of side frames and used for supporting the wrist of a patient; an elastic tensioning structure installed between the two groups of side frames, the upward lifting of the hand of the patient can drive the elastic tensioning structure to move; a bidirectional offset component arranged in the side frame and connected with the elastic tensioning structure, a trigger plate and a locking plate arranged on the side frame are matched with the bidirectional offset component, the elastic tensioning structure can be locked when the elastic tensioning structure accelerates to move towards the base, so that the patient's lost strength is prevented, and the secondary injury of the patient is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hand rehabilitation, in particular to a hand joint rehabilitation training device. BACKGROUND

[0002] When the patient's wrist is injured, a certain degree of rehabilitation training is needed, and the use of professional rehabilitation training devices can effectively prevent the patient from being injured again during the rehabilitation training process. The wrist rehabilitation training devices on the market generally adopt a load training mode, which is to let the patient lift the spring or different weight blocks through the wrist force to exercise the wrist muscles and joints and promote functional recovery.

[0003] However, during the rehabilitation training process, the patient may experience a short period of loss of strength, which may be caused by fatigue, distraction or sudden changes in injury, etc. When the patient loses strength, the load (spring or weight block) originally controlled by the patient will move in the opposite direction due to the opposite force, and the palm will be passively moved at a faster speed. This passive movement is often sudden and violent, and if there is no effective protection, the patient's wrist will bear a huge impact force and torsional force, and is easily injured again. SUMMARY

[0004] The purpose of the present application is to provide a hand joint rehabilitation training device to solve the problems raised in the background.

[0005] To achieve the above purpose, the present application provides the following technical scheme:

[0006] A hand joint rehabilitation training device, comprising:

[0007] A base is provided with a detection device and two groups of symmetrically arranged side frames;

[0008] A support roller is arranged between the two groups of side frames for supporting the patient's wrist;

[0009] An elastic tensioning structure is installed between the two groups of side frames, and the patient's hand is raised to drive the elastic tensioning structure to act;

[0010] A bidirectional offset component is arranged in the side frame and connected with the elastic tensioning structure, a trigger plate and a locking plate arranged on the side frame cooperate with the bidirectional offset component, and the elastic tensioning structure can be locked when the elastic tensioning structure moves towards the base at a high speed.

[0011] As a further scheme of the present application, a containment chamber is formed in the side frame, and a third sliding groove is arranged on the inner wall of the containment chamber.

[0012] The elastic tension structure comprises a second sliding connection part slidingly installed in the third sliding groove, a pressure roller is rotatably installed on the second sliding connection part, and the second sliding connection part is connected with the outer wall of the side frame through a first cylindrical spring;

[0013] When the patient's hand is raised, the pressure roller can move upward and pull the first cylindrical spring.

[0014] As a further scheme of the present application, the bidirectional offset assembly comprises:

[0015] An energy storage structure and a stop structure are arranged on the second sliding connection part, the stop structure has a first state and a second state which are switched when the stop structure collides with the trigger plate, and the stop structure can be switched from the first state to the second state when the stop structure collides with the trigger plate;

[0016] The energy storage structure and the stop structure are connected through a connecting rod.

[0017] As a further scheme of the present application, the energy storage structure comprises a telescopic shaft slidingly installed on the second sliding connection part, a limiting ring is formed on the telescopic shaft, a second cylindrical spring is sleeved on the telescopic shaft, one end of the second cylindrical spring is connected with the limiting ring, and the other end of the second cylindrical spring is connected with the second sliding connection part.

[0018] The lower end of the telescopic shaft is rotatably connected with one end of the connecting rod.

[0019] As a further scheme of the present application, the stop structure comprises two sets of limiting sleeves symmetrically installed on the second sliding connection part, a horizontal shaft is slidingly installed between the two sets of limiting sleeves, a return rod is connected with the horizontal shaft, an annular protrusion is arranged in the middle of the horizontal shaft, and the annular protrusion is abutted and adapted with the two sets of limiting sleeves.

[0020] The annular protrusion is rotatably connected with the other end of the connecting rod.

[0021] As a further scheme of the present application, a plurality of protruding parts are equidistantly arranged on one side of the trigger plate towards the horizontal shaft, and the protruding parts are adapted with a pulley rotatably installed at one end of the horizontal shaft.

[0022] As a further scheme of the present application, a plurality of locking grooves are equidistantly arranged on one end of the locking plate towards the horizontal shaft, and a locking part arranged at the other end of the horizontal shaft is adapted with the locking grooves.

[0023] As a further scheme of the present application, it further comprises:

[0024] A first sliding groove is arranged on the inner wall of the side frame, and a groove wheel is rotatably arranged in the first sliding groove and connected with the supporting roller;

[0025] An adjusting structure is arranged between the side frame and the supporting roller, and is used for adjusting the height of the supporting roller.

[0026] As a further scheme of the present application, the adjusting structure comprises an abutting wheel coaxially connected with the rotating shaft of the groove wheel and a side plate slidingly arranged in the side frame, and the side plate is rollingly matched with the abutting wheel.

[0027] A second sliding groove is further arranged on the side frame, a first sliding connecting part is slidingly arranged in the second sliding groove, the first sliding connecting part is connected with the side plate, and a pulling rod is connected with the first sliding connecting part.

[0028] As a further scheme of the present application, an upper surface of the side plate is provided with alternating inclined surfaces and horizontal surfaces, and a groove is arranged in the middle of the horizontal surface.

[0029] Compared with the prior art, the present application has the following beneficial effects:

[0030] Through the arrangement of the bidirectional offset component, the trigger plate and the locking plate, firstly, the stability of the stop structure during normal rehabilitation training of the patient can be ensured, and the stop structure and the locking plate are prevented from being incorrectly matched due to accidental touch or operation error during normal rehabilitation training of the patient, so that the pressure roller cannot be normally lifted upward, thereby effectively ensuring the continuity and effectiveness of the rehabilitation training, and enabling the patient to continuously and stably train, secondly, when the patient's wrist suddenly loses power during rehabilitation training, the locking plate immediately locks the stop structure during the accelerated downward movement of the pressure roller, thereby effectively avoiding secondary injury to the patient's wrist due to the rapid reverse movement of the pressure roller, and greatly improving the safety of the rehabilitation training and providing all-round protection for the patient. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 Structure schematic view of one embodiment of the hand joint rehabilitation training device.

[0032] Figure 2 Structure schematic view of another angle of one embodiment of the hand joint rehabilitation training device.

[0033] Figure 3 Structure schematic view of the internal structure of the side frame in one embodiment of the hand joint rehabilitation training device.

[0034] Figure 4 Structure schematic view of the adjusting structure in one embodiment of the hand joint rehabilitation training device.

[0035] Figure 5 A planar structure diagram of an adjusting structure in an embodiment of the hand joint rehabilitation training device.

[0036] Figure 6 A structure diagram of an elastic tension structure in an embodiment of the hand joint rehabilitation training device.

[0037] Figure 7 A structure diagram of a bidirectional offset component in an embodiment of the hand joint rehabilitation training device.

[0038] Figure 8 A structure diagram of a first state of a bidirectional offset component in an embodiment of the hand joint rehabilitation training device.

[0039] Figure 9 A structure diagram of a first state and a second state switching limit position of a bidirectional offset component in an embodiment of the hand joint rehabilitation training device.

[0040] Figure 10 A structure diagram of a second state of a bidirectional offset component in an embodiment of the hand joint rehabilitation training device.

[0041] In the figure: 1, base; 2, detection device; 3, side frame; 4, dead volume chamber; 401, first sliding chute; 402, second sliding chute; 403, third sliding chute; 5, groove wheel; 6, supporting roller; 7, abutting wheel; 8, first sliding connection part; 9, side plate; 901, inclined surface; 902, horizontal surface; 903, groove; 10, pulling rod; 11, second sliding connection part; 12, first cylindrical spring; 13, pressure roller; 14, telescopic shaft; 15, second cylindrical spring; 16, connecting rod; 17, limiting sleeve; 18, cross shaft; 1801, locking part; 1802, annular protrusion; 19, pulley; 20, trigger plate; 2001, protruding part; 21, locking plate; 2101, locking groove; 22, reset rod. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0043] In addition, elements in the application can be referred to as "fixed" or "set up" on another element, which can be directly on another element or can exist with a middle element. When an element is considered "connected" to another element, it can be directly connected to another element or can exist with a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not the only implementation.

[0044] Please refer to Figures 1-10 In the embodiment of the application, a hand joint rehabilitation training device comprises a base 1, a supporting roller 6, an elastic tensioning structure and a bidirectional offset component.

[0045] The base 1 is provided with a detection device 2 and two groups of symmetrically arranged side frames 3;

[0046] The supporting roller 6 is arranged between the two groups of side frames 3 and is used for supporting the wrist of a patient;

[0047] The elastic tensioning structure is mounted between the two groups of side frames 3, and the upward lifting of the hand of a patient can drive the elastic tensioning structure to act, the inside of the side frame 3 is formed with a containing cavity 4, and the inner wall of the containing cavity 4 is provided with a third sliding groove 403;

[0048] The elastic tensioning structure comprises a second sliding connection part 11 slidingly mounted in the third sliding groove 403, a pressing roller 13 is rotationally mounted on the second sliding connection part 11, and the second sliding connection part 11 and the outer wall of the side frame 3 are connected through a first cylindrical spring 12;

[0049] When the hand of a patient is lifted upward, the pressing roller 13 can move upward and pull the first cylindrical spring 12.

[0050] During the rehabilitation training process, the patient needs to place the wrist on the supporting roller 6, ensure that the palm is upward, and place the fingers lightly under the lower part of the pressing roller 13, the patient can freely select the palm state, or hold the pressing roller 13, or keep the palm open, during the training, the patient takes the supporting roller 6 as a stable fulcrum, lifts the palm upward, drives the pressing roller 13 to move upward, and then makes the first cylindrical spring 12 gradually stretch, the first cylindrical spring 12 will generate a corresponding elastic force according to Hooke's law during the stretching process, and provides a suitable resistance for the rehabilitation training of the wrist of the patient.

[0051] This design allows patients to adjust the height of the raised pressure roller 13 according to the actual situation of their recovery process, thereby accurately selecting different intensity rehabilitation training modes. For example, for patients in the early stages of recovery and with weak strength, a smaller lifting height can be selected to generate a lighter resistance from the first cylindrical spring 12, avoiding excessive load damage to the affected area. As the recovery progresses and the patient's strength gradually recovers, the lifting height can be gradually increased to increase the resistance, meeting the training needs of higher intensity and promoting the rapid recovery of wrist function.

[0052] Based on the above settings, not only can it help enhance the muscle strength of the patient's wrist, improve the range of motion and flexibility of the joint, but also effectively prevent common complications such as muscle atrophy and joint stiffness. Through continuous and scientific training, patients can recover their hand function more quickly, regain their self-care ability, improve their quality of life, and lay a solid foundation for returning to normal life and work.

[0053] Please refer to Figure 3 、 Figures 6-10 , the bidirectional offset component is arranged in the side frame 3 and connected with the elastic tensioning structure, the trigger plate 20 and the locking plate 21 arranged on the side frame 3 cooperate with the bidirectional offset component, and the elastic tensioning structure can be locked when the elastic tensioning structure moves towards the base 1 at high speed;

[0054] The bidirectional offset component comprises:

[0055] The energy storage structure and the stop structure are arranged on the second sliding connection part 11, the stop structure has a first state and a second state which are switched by triggering, and the stop structure can be switched from the first state to the second state when the stop structure collides with the trigger plate 20;

[0056] The energy storage structure and the stop structure are connected through the connecting rod 16;

[0057] The energy storage structure comprises a telescopic shaft 14 slidingly installed on the second sliding connection part 11, a limiting ring is formed on the telescopic shaft 14, and a second cylindrical spring 15 is sleeved on the telescopic shaft 14, one end of the second cylindrical spring 15 is connected with the limiting ring, and the other end is connected with the second sliding connection part 11, wherein the rigidity of the second cylindrical spring 15 is much smaller than that of the first cylindrical spring 12;

[0058] The lower end of the telescopic shaft 14 is rotationally connected with one end of the connecting rod 16.

[0059] In the normal rehabilitation training stage, i.e. the first state, the stop structure is precisely located close to the trigger plate 20, at this time, the second cylindrical spring 15 ensures the stable state of the stop structure with its elastic force, effectively preventing the stop structure from being incorrectly matched with the locking plate 21 due to accidental touch or operation error during the normal rehabilitation training of the patient, ensuring the smooth progress of the rehabilitation training, and the stable design of the stop structure effectively guarantees the continuity and effectiveness of the rehabilitation training, so that the patient can continuously and stably train.

[0060] However, when the patient's wrist suddenly loses power during the rehabilitation training, the stop structure can quickly cooperate with the trigger plate 20 during the acceleration of the pressure roller 13 downward, switching from the first state to the second state, and the locking plate 21 immediately locks the stop structure, thereby effectively avoiding the secondary injury of the patient's wrist due to the rapid reverse movement of the pressure roller 13, greatly improving the safety of the rehabilitation training and providing comprehensive protection for the patient.

[0061] Based on the above setting, during normal training, the stability and continuity of the training are ensured, so that the patient can focus on the rehabilitation training without worrying about the interference caused by equipment failure or misoperation, and when an accident occurs, the safety state is quickly switched to, effectively reducing the risk of injury to the patient.

[0062] Further, in the above-mentioned second state, the stop structure is in a state close to the locking plate 21, at this time, the stop structure is also locked under the elastic force provided by the second cylindrical spring 15, and the specific locking principle is as follows:

[0063] The stop structure includes two sets of limiting sleeves 17 symmetrically installed on the second sliding connection part 11, a horizontal shaft 18 is slidingly installed between the two sets of limiting sleeves 17, a reset rod 22 is connected to the horizontal shaft 18, and a ring-shaped protrusion 1802 is arranged in the middle of the horizontal shaft 18, and the ring-shaped protrusion 1802 is in abutting fit with the two sets of limiting sleeves 17;

[0064] The ring-shaped protrusion 1802 is rotatably connected to the other end of the connecting rod 16;

[0065] Specifically, the trigger plate 20 is provided with multiple protruding parts 2001 equidistantly on one side facing the horizontal shaft 18, the protruding parts 2001 are matched with the pulley 19 rotatably installed at one end of the horizontal shaft 18, and the locking plate 21 is provided with multiple locking grooves 2101 equidistantly on one end facing the horizontal shaft 18, and the locking part 1801 arranged at the other end of the horizontal shaft 18 is matched with the locking groove 2101.

[0066] In the initial state, the annular protrusion 1802 is in abutment with the limiting sleeve 17 close to the trigger plate 20, at this time, under the elastic force provided by the second cylindrical spring 15, the horizontal shaft 18 is in a stable state, and at this time, the projection of the pulley 19 and the protrusion 2001 on the horizontal plane has a coincident local area, that is, in the process of upward movement of the second sliding connection part 11, the pulley 19 will collide with the protrusion 2001, and in the process of training of the patient, the patient drives the second sliding connection part 11 to move at a slow speed through the pressing roller 13, so that when the pulley 19 collides with the protrusion 2001, the horizontal shaft 18 will move horizontally, but will not move to the middle position of the two sets of limiting sleeves 17, so that when the pulley 19 and the protrusion 2001 are separated, the pulley 19 can be reset under the tendency of the second cylindrical spring 15, based on which, in the case of normal training, the locking part 1801 will not be inserted into the locking groove 2101, so as to ensure the orderly training.

[0067] When the patient loses strength, the second sliding connection part 11 will accelerate downward movement under the pulling of the first cylindrical spring 12, at this time, the collision force when the pulley 19 and the protrusion 2001 abut is greater, so that after the pulley 19 and the protrusion 2001 are separated, the horizontal shaft 18 can continue to move due to inertia, so that the annular protrusion 1802 moves towards the middle of the two sets of limiting sleeves 17, in this process, the second cylindrical spring 15 is compressed, and when the annular protrusion 1802 moves past the middle position of the two sets of limiting sleeves 17, the second cylindrical spring 15 can drive the horizontal shaft 18 to move towards the locking plate 21 by actively releasing the elastic potential energy, and when the locking part 1801 is flush with the locking groove 2101, the locking part 1801 is inserted into the locking groove 2101, so that the second sliding connection part 11 stops moving, and effectively prevents the second sliding connection part 11 from causing secondary injury to the wrist of the patient by moving the hand of the patient quickly through the pressing roller 13.

[0068] Please refer to Figures 3-5 , the hand joint rehabilitation training device further comprises:

[0069] A first sliding groove 401 is arranged on the inner wall of the side frame 3, and a groove wheel 5 is rotatably installed in the first sliding groove 401, and the groove wheel 5 is rotatably connected with the supporting roller 6;

[0070] An adjusting structure is connected between the side frame 3 and the supporting roller 6, and the adjusting structure is used for adjusting the height of the supporting roller 6;

[0071] The adjusting structure comprises an abutting wheel 7 coaxially connected with the rotating shaft of the groove wheel 5 and a side plate 9 slidingly arranged in the side frame 3, the side plate 9 is in rolling cooperation with the abutting wheel 7, wherein the upper surface of the side plate 9 is provided with alternating inclined surfaces 901 and horizontal surfaces 902, the middle part of the horizontal surface 902 is provided with a groove 903;

[0072] The second sliding groove 402 is further arranged on the side frame 3, the first sliding connecting part 8 is slidingly arranged in the second sliding groove 402, the first sliding connecting part 8 is connected with the side plate 9, and the pulling rod 10 is connected with the first sliding connecting part 8.

[0073] It should be noted that the surface of the pressing roller 13 is provided with a touch sensing device, the touch sensing device is electrically connected with the detection device 2, in use, the height of the supporting roller 6 can be adjusted by pushing and pulling the side plate 9, so that the wrist of the patient can be bent to different degrees in the initial state, specifically, the wrist of the patient is bent to the maximum and the touch sensing device is not triggered (at this time, the palm of the patient cannot touch the touch sensing device), and in this state, the patient can generate a larger opening and closing angle during training, thereby matching the training intensity of the patient.

[0074] Wherein, the side plate 9 can be driven to move along the length direction of the second sliding groove 402 through the pulling rod 10, and when the abutting wheel 7 cooperates with the inclined surface 901, the height of the abutting wheel 7 can be changed, so that the supporting roller 6 can move along the length direction of the first sliding groove 401, and when the abutting wheel 7 moves to the horizontal surface 902, the height of the supporting roller 6 is adjusted.

[0075] Further, when the abutting wheel 7 moves to the horizontal surface 902, the abutting wheel 7 can be limited in the groove 903 to a certain extent, when the wrist of the patient is placed on the supporting roller 6, the stability of the abutting wheel 7 in the corresponding groove 903 can be ensured, thereby improving the height stability of the supporting roller 6.

[0076] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but rather can be implemented in other embodiments without departing from the spirit or essential characteristics of the present application. Thus, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the application to be indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

[0077] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature described. The specification can include implicit combinations of explicitly mentioned features and / or explicit combinations of implicitely mentioned features. Each embodiment depends on the explicit combinations of features and / or the implicit combinations of features made specifically within that embodiment, and each such embodiment can be combined with every other such embodiment to create further embodiments.

Claims

1. A hand joint rehabilitation trainer, characterized in that, The utility model relates to a kind of medical device for wrist X-ray photography, including: Base (1), detection device (2) and two groups of symmetrically arranged side frames (3) are provided on the base (1); Supporting roller (6), for supporting the wrist of patient, is arranged between the two groups of side frames (3); Elastic tension structure, installed between the two groups of side frames (3), patient's hand is up to the elastic tension structure can be actuated; Two-way offset component, arranged in the side frame (3) and connected with the elastic tension structure, trigger plate (20) and locking locking plate (21) are arranged on the side frame (3) and cooperate with the two-way offset component, when the elastic tension structure accelerates towards base (1) movement, the elastic tension structure can be locked; The inner wall of the lag chamber (4) is formed in the side frame (3), and a third sliding groove (403) is arranged on the inner wall of the lag chamber (4); The elastic tension structure includes a second sliding connection part (11) slidably installed in the third sliding groove (403), a pressure roller (13) is rotatably installed on the second sliding connection part (11), and the second sliding connection part (11) is connected with the outer wall of the side frame (3) by a first cylindrical spring (12); When patient's hand is up, the pressure roller (13) can move upwards and pull the first cylindrical spring (12); The two-way offset component includes: Energy storage structure and stop structure arranged on the second sliding connection part (11), the stop structure has a first state and a second state which are switched by triggering, when the stop structure collides with the trigger plate (20), the stop structure can be switched from the first state to the second state; The energy storage structure and the stop structure are connected by a connecting rod (16); The stop structure includes two groups of limiting sleeves (17) symmetrically installed on the second sliding connection part (11), a cross shaft (18) is slidably installed between the two groups of limiting sleeves (17), a reset rod (22) is connected to the cross shaft (18), and a ring-shaped protrusion (1802) is arranged in the middle of the cross shaft (18), the ring-shaped protrusion (1802) is abutted and matched with the two groups of limiting sleeves (17); The ring-shaped protrusion (1802) is rotatably connected with the other end of the connecting rod (16); The locking plate (21) is equidistantly provided with a plurality of locking grooves (2101) towards one end of the cross shaft (18), and a locking portion (1801) arranged at the other end of the cross shaft (18) is matched with the locking grooves (2101).

2. The hand joint rehabilitation trainer according to claim 1, characterized in that, The energy storage structure includes a telescopic shaft (14) slidably installed on the second sliding connection part (11), a limiting ring is formed on the telescopic shaft (14), a second cylindrical spring (15) is sleeved on the telescopic shaft (14), one end of the second cylindrical spring (15) is connected with the limiting ring, and the other end is connected with the second sliding connection part (11); The lower end of the telescopic shaft (14) is rotatably connected with one end of the connecting rod (16).

3. The hand joint rehabilitation trainer according to claim 2, characterized in that The trigger plate (20) is equidistantly provided with a plurality of sets of protrusions (2001) on one side of the horizontal shaft (18), and the protrusions (2001) are matched with a pulley (19) rotatably installed at one end of the horizontal shaft (18).

4. The hand joint rehabilitation trainer according to claim 1, characterized in that, Also comprising: A first sliding groove (401) is arranged on the inner wall of the side frame (3), and a groove wheel (5) is rotatably installed in the first sliding groove (401), and the groove wheel (5) is rotatably connected with the support roller (6); An adjusting structure is arranged between the side frame (3) and the support roller (6), and the adjusting structure is used for adjusting the height of the support roller (6).

5. The hand joint rehabilitation trainer according to claim 4, characterized in that The adjusting structure comprises an abutting wheel (7) which is coaxially rotatably connected with the rotating shaft of the groove wheel (5), and a side plate (9) which is slidingly arranged in the side frame (3), and the side plate (9) is rollingly matched with the abutting wheel (7); A second sliding groove (402) is further arranged on the side frame (3), and a first sliding connecting part (8) is slidingly installed in the second sliding groove (402), the first sliding connecting part (8) is connected with the side plate (9), and a pulling rod (10) is connected to the first sliding connecting part (8).

6. The hand joint rehabilitation trainer according to claim 5, characterized in that An upper surface of the side plate (9) is provided with alternating inclined surfaces (901) and horizontal surfaces (902), and a recess (903) is arranged in the middle of the horizontal surface (902).

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