LU600980B1

LU600980B1 - An adaptive force-regulating hand function rehabilitation training device

Info

Publication number: LU600980B1
Application number: LU600980A
Authority: LU
Inventors: Lin Shi
Original assignee: Air Force Medical Univ
Priority date: 2025-04-07
Filing date: 2025-04-07
Publication date: 2025-10-07

Abstract

The invention discloses an adaptive force-regulating hand function rehabilitation training device, which comprises a palm portion, wherein the rear end of the palm portion is connected to a finger portion. Finger straps are arranged at equal intervals at the bottom of the finger portion, and a wrist strap is provided at the wrist area at the bottom of the palm portion. Sliding grooves are formed at equal intervals on the top of the palm portion, and sliders are slidably connected inside the sliding grooves. A fixing rod is fixed to the top of each slider, and two counterweights are sleeved and mounted on the outer side of each fixing rod. When it is necessary to adjust the training intensity, the counterweights can be sleeved onto the fixing rod to increase the weight of the slider itself, thereby enhancing the intensity of the next training session. This allows the training intensity to be adjusted based on each patient's unique rehabilitation progress and real-time hand strength condition, enabling truly personalized rehabilitation training, significantly improving rehabilitation outcomes, and shortening the recovery period.

Description

An adaptive force-regulating hand function rehabilitation training device -/800880

Technical Field

The present invention relates to the technical field of medical devices, and specifically to an adaptive force-regulating hand function rehabilitation training device.

Background Technology

Hand function rehabilitation training devices are a type of equipment or apparatus specifically designed to assist individuals with hand dysfunction in restoring hand movement, strength, flexibility, coordination, and other related functions; Defect one: existing hand training devices for patients with Alzheimer’s disease, during use, due to the fact that each person’s hand varies in size and length, result in inaccurate positioning of the exercised area of the hand, thereby preventing the patient’s hand from receiving effective training and treatment; to address the above defect one, the prior art (Application No. 2023220935938, authorization and publication date: June 18, 2024, Chinese patent) discloses a hand training device, which is fixed onto the palm support block main body and the second and fourth joint blocks by means of a wrist strap and finger straps, and enables the fingers to perform extension and flexion movements through a first and a second electric telescopic rod, so that the hand training device can be adjusted according to different patients’ hand sizes and lengths, allowing the patient’s hand to receive sufficient training; Defect two: however, most existing hand grip ability rehabilitation training devices are difficult to be quickly and securely fastened to the wrist or arm during use, which makes operation very cumbersome; furthermore, most training devices train all five fingers simultaneously during each training session, and cannot perform individual and targeted training for a single finger, resulting in poor training effectiveness; to address defect two, the prior art (Application No. 202420248336.9, authorization and publication date: December 20, 2024, Chinese patent) discloses a hand grip ability rehabilitation training device, which supplies air through an air supply pipe into an air guide block and then separately into five air pipes, so that air can be independently supplied to tH&/600980 telescopic rods on each of the five fingers; an air-blocking block can control the air pressure and flow rate, enabling targeted training of the fingers and also realizing individual and targeted training for a single finger; in addition, the rubber rings have a variable-diameter function, allowing people with different finger thicknesses to use the device, which provides strong practicability.

In the above-mentioned mechanisms, the training intensity is usually fixed during use and cannot be adaptively adjusted according to the real-time changes in the patient’s hand strength and rehabilitation progress. For patients in the early stage of rehabilitation with extremely weak hand strength, a fixed high training intensity may exceed their tolerance, causing pain or even secondary injury, while for patients in the later stage of rehabilitation whose strength has partially recovered, a fixed low intensity fails to meet the need for further strengthening exercises, resulting in poor training outcomes and prolonged rehabilitation duration.

Therefore, we propose an adaptive force-regulating hand function rehabilitation training device to address the problems mentioned above.

Content of Invention

The purpose of the present invention is to provide an adaptive force-regulating hand function rehabilitation training device, so as to solve the problems in the prior art mentioned in the above background, namely that the training intensity of existing training devices is fixed, which not only fails to accommodate patients with weak hand strength in the early stage of rehabilitation—easily causing pain and secondary injury—but also cannot meet the needs for intensive training in the later stage of rehabilitation, resulting in poor training effectiveness and prolonged rehabilitation periods.

To achieve the above purpose, the present invention provides the following technical solution: an adaptive force-regulating hand function rehabilitation training device, comprising a palm portion, wherein the rear end of the palm portion 1s connected to a finger portion, finger straps are arranged at equal intervals on the bottom of the finger portion, and a wrist strap is provided at the wrist area ht/°°0280 the bottom of the palm portion; sliding grooves are formed at equal intervals on the top of the palm portion, sliders are slidably connected inside the sliding grooves, a fixing rod is fixed on the top of each slider, two counterweights are sleeved and mounted on the outer side of each fixing rod, guide wheels are fixedly connected at equal intervals on the left side of the top of the palm portion, and traction ropes are connected to the outer side of the guide wheels; a first spring 1s installed between the right side of the slider and the inner wall of the sliding groove; a movable contact switch is bolted to the left side of the slider, and a fixed contact switch is bolted to the left inner wall of the sliding groove; an indicator light 1s fixed on the top of the palm portion, located to the left of the sliding groove.

Preferably, the joints of the finger portion are hingedly connected, and the two ends of the traction rope are fixedly connected to the top of the finger portion and the left end of the fixing rod, respectively.

Preferably, the position of the movable contact switch corresponds to that of the sliding groove, and the sliding groove is electrically connected to the indicator light via a wire.

Preferably, the right end of the finger portion is fixedly connected to a connecting block, the finger portion is slidably arranged inside the palm portion via the connecting block, a rotating disk is rotatably connected inside the connecting block via a shaft, and a torsion spring is installed between the shaft end of the rotating disk and the interior of the connecting block; limit blocks are symmetrically arranged about the center point of the rotating disk inside the connecting block, and both limit blocks are connected to the rotating disk via movable plates; limit grooves are formed symmetrically and at equal intervals about the center point of the connecting block inside the palm portion.

Preferably, the shaft end of the rotating disk extends beyond the outer surface of the palm portion, and both ends of the movable plate are hingedly connected to the surface of the rotating disk and the end of the limit block, respectively; tHa/600980 connection between the limit block and the limit groove is an interlocking fit.

Preferably, a driving plate is slidably connected inside the palm portion below the sliding groove, convex blocks are fixed at equal intervals on the bottom of the driving plate, and massage blocks are connected at equal intervals below the convex blocks inside the palm portion; second springs are installed between the outer sides of the massage blocks and the inner wall of the palm portion.

Preferably, the driving plate is L-shaped, and one end of the driving plate is fixedly connected to the bottom of the slider; the convex blocks are in contact with the ends of the massage blocks, and the bottom of the massage blocks extends beyond the outer surface of the palm portion.

Preferably, an airbag is provided inside the palm portion to the left of the convex blocks, and the left end of the airbag is fixedly connected to an air intake pipe; pipelines are fixed at equal intervals inside the palm portion, and air outlets are formed at equal intervals at the bottom of the pipelines; an air inlet pipe is fixed between the pipeline and the airbag, and one-way valves are installed inside both the air inlet pipe and the air intake pipe.

Preferably, the end of the air intake pipe far from the airbag extends beyond the outer surface of the palm portion; the airbag is connected to the interior of the pipeline through the air inlet pipe; the position of the airbag corresponds to that of the convex blocks.

Compared with the prior art, the beneficial effects of the present invention are as follows: the adaptive force-regulating hand function rehabilitation training device adopts a novel structural design, the specific features of which are described as follows: (1) When the patient’s hand is fixed onto the device and a gripping motion is performed, the finger portion bends and pulls the slider to move within the sliding groove via the traction rope, causing the movable contact switch to come into contact with the fixed contact switch and thereby activating the indicator light to illuminate, indicating the completion of one training cycle. When it is necessary td'200980 adjust the training intensity, the counterweights can be sleeved onto the fixing rod to increase the weight of the slider itself, thereby enhancing the intensity of the next training session. This enables adjustment of training intensity according to 5 each patient’s unique rehabilitation progress and real-time hand strength condition, realizing truly personalized rehabilitation training, significantly improving rehabilitation effectiveness, and shortening the rehabilitation period. (2) As the slider moves within the sliding groove, it drives the movement of the driving plate, which presses the massage blocks downward through the convex blocks, thereby massaging the acupuncture points on the back of the patient’s hand.

This helps promote blood circulation in the hand, relieves hand muscle tension, and enhances the effectiveness of hand rehabilitation. Furthermore, when the slider returns to its original position under the restoring force of the first spring, the convex blocks no longer press the massage blocks, allowing the massage blocks to reset under the restoring force of the second spring, making them ready for the next massage session. (3) The movement of the driving plate compresses the airbag, causing it to release gas under pressure. The gas enters the pipeline through the air inlet pipe and 1s discharged through multiple air outlets towards the back of the patient’s hand, which helps to relieve the patient’s tension and anxiety, providing a sense of care and comfort and offering psychological support. Furthermore, when the driving plate no longer compresses the airbag, the airbag automatically returns to its original shape and refills with air through the air intake pipe. At the same time, the installed one-way valves help prevent air turbulence. (4) By rotating the rotating disk in the forward direction, the two movable plates rotate relative to each other and pull the two limit blocks to move relative to each other, thereby disengaging them from the corresponding limit grooves and releasing the restriction on the finger portion. At this point, the finger portion can be pulled to move the connecting block inside the palm portion, allowing the user to stretch or shorten the finger portion according to finger size, thereby adapting td’600980 different patients. Furthermore, after adjusting the length of the finger portion, releasing the rotating disk allows it to rotate in the reverse direction under the restoring force of the torsion spring, driving the limit blocks to return via the movable plates and insert into the corresponding limit grooves to fix the finger portion in place.

Explanation on Drawings

Drawing 1 is a top view structural schematic diagram of the present invention;

Drawing 2 is a perspective structural schematic diagram of the present invention;

Drawing 3 is a side sectional structural schematic diagram of the present invention;

Drawing 4 1s a main sectional structural schematic diagram of the present invention;

Drawing 5 1s a perspective structural schematic diagram of the finger portion of the present invention;

Drawing 6 1s a perspective structural schematic diagram of the driving plate of the present invention;

Drawing 7 is a perspective structural schematic diagram of the massage block of the present invention;

Drawing 8 is a perspective structural schematic diagram of the slider of the present invention;

Drawing 9 is an enlarged structural schematic diagram of portion A in

Drawing 1 of the present invention;

Drawing 10 is an enlarged structural schematic diagram of portion B in

Drawing 4 of the present invention.

In the drawings: 1. palm portion; 2. finger portion; 3. wrist strap; 4. finger strap; 5. movable contact switch; 6. connecting block; 7. rotating disk; 8. movable plate; 9. limit block; 10. limit groove; 11. traction rope; 12. fixing rod; 13. slider;

14. sliding groove; 15. fixed contact switch; 16. first spring; 17. indicator light; 184600980 driving plate; 19. airbag; 20. pipeline; 21. convex block; 22. counterweight; 23. air intake pipe; 24. second spring; 25. air inlet pipe; 26. massage block.

Specific Implementation Method

The following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are merely a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort shall fall within the scope of protection of the present invention.

Please refer to Drawings 1 to 10. The present invention provides the following technical solution: an adaptive force-regulating hand function rehabilitation training device.

Implementation method 1: In order to solve the problem in the prior art that the training intensity of existing training devices is fixed—failing to accommodate patients with weak hand strength in the early stage of rehabilitation, likely causing pain and secondary injury, and also failing to meet the intensive training needs of patients in the later stage of rehabilitation, resulting in poor training effect and prolonged rehabilitation period—the following solution is disclosed, specifically referring to Drawings 1 to 4 and Drawing 8. It comprises a palm portion 1, the rear end of which is connected to a finger portion 2. Finger straps 4 are arranged at equal intervals on the bottom of the finger portion 2, and a wrist strap 3 is provided at the wrist area at the bottom of the palm portion 1. Sliding grooves 14 are formed at equal intervals on the top of the palm portion 1, and sliders 13 are slidably connected inside the sliding grooves 14. A fixing rod 12 1s fixed on the top of each slider 13, and two counterweights 22 are sleeved and mounted on the outer side of each fixing rod 12. Guide wheels are fixedly connected at equal intervals on the left side of the top of the palm portion 1, and traction ropes 11 are connected to the outer side of the guide wheels. The joints of the finger portion 2 are hingedly’800980 connected, and the two ends of the traction rope 11 are respectively fixedly connected to the top of the finger portion 2 and the left end of the fixing rod 12. A first spring 16 is installed between the right side of the slider 13 and the inner wall of the sliding groove 14. A movable contact switch 5 is bolted to the left side of the slider 13, and a fixed contact switch 15 is bolted to the left inner wall of the sliding groove 14. An indicator light 17 is fixed to the top of the palm portion 1 on the left side of the sliding groove 14. The position of the movable contact switch 5 corresponds to that of the sliding groove 14, and the sliding groove 14 is electrically connected to the indicator light 17 via a wire.

During use, the patient's hand is placed at the lower position of the device and secured at the wrist using the wrist strap 3, while the fingers are secured using the finger straps 4. When the patient performs a gripping motion, the finger portion 2 bends and pulls the slider 13 to move within the sliding groove 14 via the traction rope 11, causing the movable contact switch 5 to contact the fixed contact switch 15 and thereby activating the indicator light 17, indicating the completion of one training cycle. When the hand extends, the slider 13 returns under the restoring force of the first spring 16, and the above operation is repeated to achieve the training purpose. When it is necessary to adjust the training intensity, the counterweights 22 can be sleeved onto the fixing rod 12 to increase the weight of the slider 13, thereby enhancing the intensity of the next training session. This enables adjustment of training intensity according to each patient’s unique rehabilitation progress and real-time hand strength condition, realizing truly personalized rehabilitation training, significantly improving rehabilitation outcomes, and shortening the rehabilitation period.

Implementation method 2: Unlike Implementation method 1, the present implementation method allows adjustment of the length of the finger portion 2 according to the finger length of different patients, so as to accommodate different users. Specifically referring to Drawings 1 and 5, the right end of the finger portion

2 is fixedly connected to a connecting block 6. The finger portion 2 is slidably/600980 arranged inside the palm portion 1 via the connecting block 6. A rotating disk 7 is rotatably connected inside the connecting block 6 via a shaft, and a torsion spring is installed between the shaft end of the rotating disk 7 and the interior of the connecting block 6. Limit blocks 9 are symmetrically arranged about the center point of the rotating disk 7 inside the connecting block 6, and both limit blocks 9 are connected to the rotating disk 7 via movable plates 8. Limit grooves 10 are formed symmetrically and at equal intervals about the center point of the connecting block 6 inside the palm portion 1. The shaft end of the rotating disk 7 extends beyond the outer surface of the palm portion 1. Both ends of each movable plate 8 are hingedly connected to the surface of the rotating disk 7 and to the end of the corresponding limit block 9, respectively. The connection between the limit block 9 and the limit groove 10 is an interlocking fit.

By rotating the rotating disk 7 in the forward direction, the two movable plates 8 rotate relative to each other and pull the two limit blocks 9 to move relative to each other, so that they disengage from the corresponding limit grooves 10 and the restriction on the finger portion 2 is released. At this time, the finger portion 2 can be pulled, causing the connecting block 6 to move inside the palm portion 1, thereby allowing the user to stretch or shorten the finger portion 2 according to the size of the fingers, so as to accommodate different patients. After the adjustment of the length of the finger portion 2 is completed, the rotating disk 7 is released and rotates in the reverse direction under the restoring force of the torsion spring, driving the limit blocks 9 to return via the movable plates 8 and insert into the corresponding limit grooves 10, thereby fixing the finger portion 2 in place.

Implementation method 3: Unlike Implementation method 2, the present implementation method enables simultaneous massage and air blowing to the patient’ s hand during training, thereby promoting blood circulation in the hand, relieving muscle tension, and enhancing the recovery effect of the hand.

Specifically referring to Drawings 1, 3, 4, 6, 7, and 10, a driving plate 18 +4/600980 slidably connected inside the palm portion 1 below the sliding groove 14. Convex blocks 21 are fixed at equal intervals on the bottom of the driving plate 18.

Massage blocks 26 are connected at equal intervals below the convex blocks 21 inside the palm portion 1. Second springs 24 are installed between the outer sides of the massage blocks 26 and the inner wall of the palm portion 1. The driving plate 18 is L-shaped, and one end of the driving plate 18 is fixedly connected to the bottom of the slider 13. The convex blocks 21 are in contact with the ends of the massage blocks 26, and the bottom ends of the massage blocks 26 extend beyond the outer surface of the palm portion 1. An airbag 19 is arranged inside the palm portion 1 to the left of the convex blocks 21, and the left end of the airbag 19 1s fixedly connected to an air intake pipe 23. Pipelines 20 are fixed at equal intervals inside the palm portion 1, and air outlets are formed at equal intervals at the bottom of the pipelines 20. An air inlet pipe 25 is fixed between the pipeline 20 and the airbag 19, and one-way valves are installed inside both the air inlet pipe 25 and the air intake pipe 23. The end of the air intake pipe 23 far from the airbag 19 extends beyond the outer surface of the palm portion 1. The interior of the airbag 19 is in fluid communication with the interior of the pipeline 20 through the air inlet pipe 25. The position of the airbag 19 corresponds to that of the convex blocks 21.

When the slider 13 moves within the sliding groove 14, it is capable of driving the driving plate 18 to move, and the convex blocks 21 press against the massage blocks 26, causing them to move downward and massage the acupuncture points on the back of the patient’ s hand. This promotes blood circulation in the hand, relieves muscle tension, and enhances hand recovery. When the slider 13 returns to its original position under the restoring force of the first spring 16, the convex blocks 21 no longer press the massage blocks 26, allowing the massage blocks 26 to return under the restoring force of the second spring 24, thereby facilitating the next massage session. The movement of the driving plate 18 also compresses the airbag 19, causing the airbag 19 to release gas under pressure. The gas enters the pipeline 20 through the air inlet pipe 25 and is discharged through’600980 multiple air outlets toward the back of the patient” s hand, which helps alleviate the patient's tension and anxiety, providing a sense of care and psychological comfort.

When the driving plate 18 no longer compresses the airbag 19, the airbag 19 automatically returns to its original shape and refills with air through the air intake pipe 23. At the same time, the one-way valves installed in the system help generate turbulent airflow.

Although the present invention has been described in detail with reference to the foregoing implementation methods, it should be understood by those skilled in the art that modifications may still be made to the technical solutions described in the above implementation methods, or certain technical features may be replaced with equivalents. Any modifications, equivalent replacements, or improvements made within the spirit and principles of the present invention shall fall within the scope of protection of the present invention.

Claims

Claims LU600980

I. An adaptive force-regulating hand function rehabilitation training device, comprising a palm portion (1), wherein the rear end of the palm portion (1) is connected to a finger portion (2), the bottom of the finger portion (2) is provided with finger straps (4) at equal intervals, and the wrist area at the bottom of the palm portion (1) is provided with a wrist strap (3); characterized in that: sliding grooves (14) are formed at equal intervals on the top of the palm portion (1), and sliders (13) are slidably connected inside the sliding grooves (14). A fixing rod (12) is fixed to the top of each slider (13), and two counterweights (22) are sleeved and mounted on the outer side of each fixing rod (12). Guide wheels are fixedly connected at equal intervals on the left side of the top of the palm portion (1), and traction ropes (11) are connected to the outer side of the guide wheels. A first spring (16) is installed between the right side of the slider (13) and the inner wall of the sliding groove (14). A movable contact switch (5) is bolted to the left side of the slider (13), and a fixed contact switch (15) is bolted to the left inner wall of the sliding groove (14). An indicator light (17) is fixed on the top of the palm portion (1) to the left of the sliding groove (14).
2. The adaptive force-regulating hand function rehabilitation training device according to claim 1, characterized in that: the joints of the finger portion (2) are hingedly connected, and the two ends of the traction rope (11) are respectively fixedly connected to the top of the finger portion (2) and the left end of the fixing rod (12).
3. The adaptive force-regulating hand function rehabilitation training device according to claim 1, characterized in that: the position of the movable contact switch (5) corresponds to that of the sliding groove (14), and the sliding groove (14) is electrically connected to the indicator light (17) via a wire.
4. The adaptive force-regulating hand function rehabilitation training device according to claim 1, characterized in that: the right end of the finger portion (2) is fixedly connected to a connecting block (6), the finger portion (2) is slidably arranged inside the palm portion (1) via the connecting block (6), a rotating disk (4800980 is rotatably connected via a shaft inside the connecting block (6), and a torsion spring is installed between the shaft end of the rotating disk (7) and the inside of the connecting block (6). Limit blocks (9) are symmetrically arranged about the center point of the rotating disk (7) inside the connecting block (6), and both limit blocks (9) are connected to the rotating disk (7) via movable plates (8). Limit grooves (10) are formed symmetrically and at equal intervals about the center point of the connecting block (6) inside the palm portion (1).
5. The adaptive force-regulating hand function rehabilitation training device according to claim 4, characterized in that: the shaft end of the rotating disk (7) extends beyond the outer surface of the palm portion (1), the two ends of the movable plate (8) are hingedly connected to the surface of the rotating disk (7) and to the ends of the limit blocks (9), and the connection between the limit blocks (9) and the limit grooves (10) is an interlocking fit.
6. The adaptive force-regulating hand function rehabilitation training device according to claim 1, characterized in that: a driving plate (18) is slidably connected inside the palm portion (1) below the sliding groove (14), and convex blocks (21) are fixed at equal intervals on the bottom of the driving plate (18). Massage blocks (26) are connected at equal intervals below the convex blocks (21) inside the palm portion (1), and second springs (24) are installed between the outer sides of the massage blocks (26) and the inner wall of the palm portion (1).
7. The adaptive force-regulating hand function rehabilitation training device according to claim 6, characterized in that: the driving plate (18) is L-shaped, one end of the driving plate (18) is fixedly connected to the bottom of the slider (13), the convex blocks (21) are in close contact with the ends of the massage blocks (26), and the bottom ends of the massage blocks (26) extend beyond the outer surface of the palm portion (1).
8. The adaptive force-regulating hand function rehabilitation training device according to claim 1, characterized in that: an airbag (19) is arranged inside the palm portion (1) to the left of the convex blocks (21), and the left end of the airbadg’600980 (19) is fixedly connected to an air intake pipe (23). Pipelines (20) are fixed at equal intervals inside the palm portion (1), and air outlets are formed at equal intervals at the bottom of the pipelines (20). An air inlet pipe (25) is fixed between the pipeline (20) and the airbag (19), and one-way valves are installed inside both the air inlet pipe (25) and the air intake pipe (23).
9. The adaptive force-regulating hand function rehabilitation training device according to claim 8, characterized in that: the end of the air intake pipe (23) far from the airbag (19) extends beyond the outer surface of the palm portion (1), the interior of the airbag (19) is connected to that of the pipeline (20) via the air inlet pipe (25), and the position of the airbag (19) corresponds to that of the convex blocks (21).