A traction-type finger rehabilitation training mechanism

Abstract

The present invention discloses a traction-type finger rehabilitation training mechanism, comprising a base plate, one end of which is provided with a thumb traction assembly, and the other end of which is provided with a four-finger traction assembly. A fixed handle assembly is provided between the thumb traction assembly and the four-finger traction assembly for limiting the upward sliding of the palm. The thumb traction assembly includes a thumb motor mounting plate and a thumb traction motor with a telescopic function, and the actuating end of the thumb traction motor passes through the thumb motor mounting plate toward the fixed handle assembly. The four-finger traction assembly includes a four-finger motor mounting plate and a four-finger traction motor with a telescopic function, and the actuating ends of the four-finger traction motor both pass through the four-finger motor mounting plate toward the fixed handle assembly. The actuating ends of the thumb traction motor and the four-finger traction motor are respectively hinged to finger fixing mechanisms for fixing the fingers. The present invention has a simple structure and is detachable and portable, enabling active and passive training of five fingers or a single finger.

Description

Technical Field

[0001] The present invention relates to the technical field of medical rehabilitation training equipment, in particular to a traction-type finger rehabilitation training mechanism. Background Art

[0002] Stroke is a highly disabling disease, causing impairment of all four limbs. Hand function is essential for daily life, but stroke-related hand impairment can lead to the loss of self-care for some patients. Research shows that finger rehabilitation therapy can restore hand function to a level sufficient for practical use in approximately 20%-30% of patients, and 30%-40% to a level sufficient for assisted living.

[0003] At present, the best rehabilitation treatment method for patients with finger disabilities or finger trauma at home and abroad is to repair and reshape damaged nerves and conduct continuous passive motion rehabilitation training. Traditional rehabilitation treatment for finger patients is one-on-one rehabilitation treatment by rehabilitation technicians, which is labor-intensive and expensive.

[0004] Rehabilitation physicians can use finger rehabilitation robots to assist patients in providing functional progressive rehabilitation treatment, which can effectively solve problems such as workload and cost. Therefore, finger rehabilitation robots came into being.

[0005] The specification with publication number CN 109549819 B discloses a palm-supported finger rehabilitation training device and its use method. The device includes a mounting base, a finger rehabilitation training mechanism mounted on the mounting base, and a driving mechanism for driving the finger rehabilitation training mechanism. The finger rehabilitation training mechanism includes four sets of independent and structurally identical finger training combination transmission devices, corresponding to the index finger, middle finger, ring finger, and pinky finger of the human hand structure respectively. The mounting base has a support surface capable of supporting the human palm. Each set of the finger training combination transmission devices includes an MP motion slide, a PIP finger sleeve, a DIP finger sleeve, and a connecting rod transmission mechanism. The force sensor collects force feedback information, judges and performs force stabilization control, and uses a spatial position sensor to collect spatial angle information to achieve real-time control of the spatial position of the finger. This invention does not disclose a finger training combination transmission device for the thumb, and it cannot complete rehabilitation training for the thumb. Therefore, this finger rehabilitation training device still has significant limitations.

[0006] The specification, with publication number CN 211752263 U, discloses a finger rehabilitation training and stretching device, comprising a mounting plate, with four sets of first mounting blocks fixedly mounted laterally on the top of the mounting plate, each set of first mounting blocks fixedly mounted on the top of a fixing plate, a first lifting ring fixedly mounted on the bottom of the fixing plate, a spring removably mounted on the first lifting ring, a second lifting ring removably mounted on the bottom of the spring, a slider integrally formed on the bottom of the second lifting ring, a steel wire rope fixedly mounted on the bottom of the slider, a through-hole formed at the bottom of the first mounting block, a steel wire rope extending through the through-hole, a finger ring fixedly mounted on the end of the steel wire rope, and two sets of fingers fixedly mounted on the right side of the first mounting block. This invention mainly relies on the elastic force of the spring to complete the patient's active training and cannot complete passive training. Therefore, it is only suitable for patients with good muscle strength and cannot be used by patients with poor muscle strength. Its scope of application is somewhat limited. Summary of the Invention

[0007] The object of the present invention is to provide a traction-type finger rehabilitation training mechanism which can realize passive training and active training of a patient's five fingers simultaneously.

[0008] A traction-type finger rehabilitation training mechanism comprises a base plate, characterized in that a thumb traction assembly is provided at one end of the base plate, a four-finger traction assembly is provided at the other end, and a fixed handle assembly for limiting the upward sliding of the palm is provided between the thumb traction assembly and the four-finger traction assembly;

[0009] The thumb traction assembly includes a thumb motor mounting plate and a thumb traction motor with a telescopic function, and the execution end of the thumb traction motor passes through the thumb motor mounting plate toward the fixed handle assembly;

[0010] The four-finger traction assembly includes a four-finger motor mounting plate and four four-finger traction motors with telescopic functions, and the execution ends of the four-finger traction motors all pass through the four-finger motor mounting plate toward the fixed handle assembly;

[0011] The ends of the execution end of the thumb traction motor and the execution end of the four-finger traction motor are respectively hinged with five finger fixing mechanisms for fixing fingers.

[0012] When the user needs to perform finger rehabilitation training, he or she presses the palm against the fixed handle assembly, and the distal interphalangeal joint of the thumb and the second interphalangeal joints of the index finger, middle finger, ring finger, and little finger are fixed by the finger fixing mechanism. By controlling the operation of one or more of the thumb traction motor and the four-finger traction motor, when one or more of the thumb traction motor and the four-finger traction motor are working, the finger corresponding to the traction motor is passively trained, and the executive end of the traction motor extends to push the finger to make a circular motion; when one or more of the thumb traction motor and the four-finger traction motor stop working, the finger corresponding to the traction motor is actively trained, and the executive end of the traction motor relies on the strength of the finger itself to stretch. According to the above principle, finger rehabilitation training can be carried out in the form of palm-to-palm and fist-clenching training.

[0013] The fixed handle assembly includes a fixed adjustment base fixed to the base. A vertical rod is mounted on the base. A vibration motor is fixed to the sidewall of the rod where it contacts the palm. A telescopic adjustment rod with a duckbill-shaped top is located at the upper end of the vertical rod. The telescopic adjustment rod can be adjusted up and down according to the size of the user's palm until the duckbill effectively restricts the palm from sliding upward. The vibration motor provides tactile feedback to the user, effectively enhancing the user's sensory experience.

[0014] Preferably, an arc-shaped groove for placing the palm is provided at the upper end of the fixed adjustment seat, and the width of the arc-shaped groove matches the thickness of the user's palm, providing comfort for the user when using it.

[0015] The thumb traction assembly is further provided with a first fixing bracket fixed to the base plate, and the thumb motor mounting plate is bolted to the first fixing bracket via a vertical waist hole. The thumb motor mounting plate can be adjusted in vertical position via the vertical waist hole.

[0016] The thumb motor mounting plate is provided with a thumb U-shaped groove for slidingly connecting the executing end of the thumb traction motor. A thumb clamping screw is provided in the thumb U-shaped groove for adjusting the movement or swing amplitude of the executing end of the thumb traction motor. By adjusting and tightening the thumb clamping screw, the movement or swing amplitude of the executing end of the thumb traction motor can be adapted to the thumb lengths of different users.

[0017] The four-finger traction assembly is further provided with a second fixing bracket fixed to the bottom plate, and the four-finger motor mounting plate is bolted to the second fixing bracket through a vertical waist hole. The four-finger motor mounting plate can adjust the vertical position through the vertical waist hole.

[0018] Four parallel four-finger U-shaped grooves are provided on the four-finger motor mounting plate, and the four-finger U-shaped grooves are respectively used to slideably connect the execution ends of the four-finger traction motor. The four-finger U-shaped grooves are each provided with a four-finger clamping screw for adjusting the movement or swing amplitude of the execution end of the four-finger traction motor; by adjusting and tightening the clamping screws, the movement or swing amplitude of the execution end of the four-finger traction motor can be adapted to the four finger lengths of different users.

[0019] Preferably, the four parallel four-finger U-shaped grooves are arranged in an arc shape on the four-finger motor mounting plate; different transverse slot positions are set on the four-finger motor mounting plate to adapt to different length requirements of the four fingers.

[0020] The finger-fixing mechanism includes a strap and a strap-fixing ring. One end of the strap-fixing ring is a U-shaped block that is internally hinged to the actuating end of the thumb traction motor or the actuating end of the four-finger traction motor. The other end of the thumb strap-fixing ring is a semicircular plate fixed to the U-shaped block. The semicircular plate is provided with an elongated hole for securing the strap. This configuration of the strap allows for adaptability to fingers of varying thicknesses.

[0021] The present invention designs a traction-type finger rehabilitation training mechanism. Compared with the existing technology, the present invention has the following advantages:

[0022] 1. The present invention realizes active training and passive training of five fingers at the same time, and can also realize active training and passive training of a single finger.

[0023] 2. Mirror-copying the mechanism of the present invention can realize traction-type rehabilitation training for both hands.

[0024] 3. The present invention has a simple structure, is convenient to use, easy to assemble, and can be disassembled and carried; at the same time, the present invention has a low cost and is conducive to promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of a traction-type finger rehabilitation training mechanism according to an embodiment of the present invention.

[0026] Figure 2 for Figure 1 The structural schematic diagram of the fixed handle assembly is shown.

[0027] Figure 3 for Figure 1 The schematic structural diagram of the thumb traction assembly is shown.

[0028] Figure 4 for Figure 1 The structural schematic diagram of the four-finger traction assembly is shown.

[0029] Figure 5 for Figure 1 The diagram shown is a schematic diagram of the use of the traction-type finger rehabilitation training mechanism when the fingers are fixed.

[0030] Figure 6 for Figure 1 The diagram shown is a schematic diagram of the use of the traction-type finger rehabilitation training mechanism during finger traction. DETAILED DESCRIPTION

[0031] like Figures 1-4 As shown, the traction-type finger rehabilitation training mechanism includes a base plate 1, a fixed handle assembly 2, a thumb traction assembly 3, and a four-finger traction assembly 4. The thumb traction assembly 3 is located at the end of the base plate 1 close to the human body, and the four-finger traction assembly 4 is located at the end of the base plate 1 away from the human body. The fixed handle assembly 2 is located between the thumb traction assembly 3 and the four-finger traction assembly 4.

[0032] The fixed handle assembly 2 includes a fixed adjustment base 6, a vibration motor 7, and a telescopic adjustment rod 5. The lower end of the fixed adjustment base 6 is fixed to the base plate 1. A vertical rod 61 is fixed to the upper end of the fixed adjustment base 6. The side wall of the vertical rod 61, which contacts the palm, is fixed to the vibration motor 7, which provides tactile feedback to the palm. The upper end of the fixed adjustment base 6 also features an arc-shaped groove 62 for receiving the palm. The width of this groove 62 is 25-30 mm, matching the thickness of the user's palm and providing comfort during use.

[0033] A telescopic adjustment rod 5 is fixed to the upper end of the vertical rod 61. The upper end of the telescopic adjustment rod 5 has a duckbill-shaped top. The telescopic adjustment rod 5 can be adjusted up and down according to the size of the user's palm until the duckbill effectively restricts the palm from sliding upward. The lower portion of the telescopic adjustment rod 5 is cylindrical, increasing the comfort of the palm resting against the telescopic adjustment rod 5.

[0034] The thumb traction assembly 3 includes a retractable thumb traction motor 8, a thumb motor mounting plate 9, a first fixing bracket 10, and a finger securing mechanism 11. The first fixing bracket 10 is an L-shaped bracket, its bottom bolted to the base plate 1. The thumb motor mounting plate 9, located near the body, has a vertical hole for bolting the first fixing bracket 10. The thumb motor mounting plate 9 is adjusted vertically through the hole and bolts to accommodate different thumb heights.

[0035] The upper portion of the thumb motor mounting plate 9 extends away from the human body and is provided with a thumb U-shaped groove 91 for slidingly connecting the execution end of the thumb traction motor 8. The execution end of the thumb traction motor 8 passes through the thumb motor mounting plate 9 toward the fixed handle assembly 2.

[0036] A thumb compression screw 92 is fixed to the outer end of the thumb U-shaped groove 91 for adjusting the movement or swing amplitude of the execution end of the thumb traction motor 8; by adjusting and tightening the thumb compression screw 92, the movement or swing amplitude of the execution end of the thumb traction motor 8 can be adapted to the thumb length of different users.

[0037] The four-finger traction assembly 4 includes four telescopic four-finger traction motors 12, a four-finger motor mounting plate 13, a second fixing bracket 14, and a finger fixing mechanism 11. The second fixing bracket 14 is an L-shaped bracket, its bottom bolted to the base plate 1. The portion of the four-finger motor mounting plate 13 closest to the body is provided with a vertical waist hole for bolting the second fixing bracket 14. The four-finger motor mounting plate 13 is adjusted vertically by using the vertical waist hole and bolts to meet the overall height adjustment of the four fingers of different users.

[0038] The part of the four-finger motor mounting plate 13 away from the human body is provided with four parallel four-finger U-shaped grooves 131 for slidingly connecting the execution end of the four-finger traction motor 12. The vertical spacing between the four-finger U-shaped grooves 131 is 24 mm. The execution end of the four-finger traction motor 12 passes through the four-finger motor mounting plate 13 toward the fixed handle assembly 2.

[0039] Four parallel four-finger U-shaped slots 131 are arranged in an arc shape on the four-finger motor mounting plate 13, with a horizontal spacing of 10 to 13 mm. Different horizontal slot positions are set on the four-finger motor mounting plate 13 to adapt to different length requirements of the four fingers.

[0040] A four-finger clamping screw 132 is fixed at the outer end of the four-finger U-shaped groove 131 for adjusting the movement or swing amplitude of the execution end of the four-finger traction motor 12; by adjusting and tightening the four-finger clamping screw 132, the movement or swing amplitude of the execution end of the four-finger traction motor 12 can be adapted to the lengths of different fingers of different users.

[0041] The finger fixing mechanism 11 includes a strap 111 and a strap fixing ring 112. One end of the strap fixing ring 112 is a U-shaped block 113 internally hinged with the execution end of the thumb traction motor 8 or the execution end of the four-finger traction motor 12. The other end of the thumb strap fixing ring 112 is a semicircular plate 114 fixed to the U-shaped block 113. The radius of the semicircular plate 114 is 9 to 10 mm, and the semicircular plate 114 is provided with a long hole for fixing the strap 111.

[0042] like Figure 5 and Figure 6As shown, when the user needs to perform finger rehabilitation training, the user adjusts the height of the telescopic adjustment rod 5, the thumb motor mounting plate 9, and the four-finger motor mounting plate 13 according to the size of the user's palm, and then loosens the thumb compression screw 92 and the four-finger compression screw 132 according to the length of the user's fingers. The position of the thumb traction motor 8 and the four-finger traction motor 12 is adjusted by moving or swinging, and the thumb compression screw 92 and the four-finger compression screw 132 are tightened. The palm is placed in the arc-shaped groove 62, with the palm against the vibration motor 7, and the fingers are inserted into the semicircular plate 114, and then secured with the strap 111. The strap 111 needs to be fixed to the distal interphalangeal joint of the thumb and the second interphalangeal joints of the index finger, middle finger, ring finger, and little finger respectively.

[0043] By controlling the operation of one or more of the thumb traction motor 8 and the four-finger traction motors 12, when one or more of the thumb traction motor 8 and the four-finger traction motors 12 are working, the fingers corresponding to the traction motors are passively trained; when one or more of the thumb traction motor 8 and the four-finger traction motors 12 stop working, the fingers corresponding to the traction motors are actively trained, and at this time the execution end of the traction motor relies on the strength of the fingers themselves to stretch.

[0044] Taking the passive training of the thumb alone as an example, the thumb traction motor 8 is controlled to work alone, and the executive end of the thumb traction motor 8 extends outward. By hingedly connecting the finger fixing mechanism 11 and the executive end of the thumb traction motor 8, the linear motion of the executive end of the thumb traction motor 8 is converted into a circular motion that bends inwards during thumb rehabilitation training. The remaining four fingers rely on their own strength to bend inwards in a circular motion. By hingedly connecting the finger fixing mechanism 11 and the four-finger traction motor 12, the circular motion of the four fingers is converted into a linear stretching of the executive end of the four-finger traction motor 12. The five fingers bend until the vibration motor 7 vibrates to indicate that the training is complete. Based on the above principle, training methods such as palm-to-palm and fist-clenching can be carried out in finger rehabilitation training.

Claims

1. A traction-type finger rehabilitation training mechanism, comprising a base plate (1), characterized in that: A thumb traction assembly (3) is provided at one end of the base plate (1), and a four-finger traction assembly (4) is provided at the other end; a fixed handle assembly (2) for limiting the upward sliding of the palm is provided between the thumb traction assembly (3) and the four-finger traction assembly (4); the thumb traction assembly (3) comprises a thumb motor mounting plate (9) and a thumb traction motor (8) with a telescopic function, and the execution end of the thumb traction motor (8) passes through the thumb motor mounting plate (9) toward the fixed handle assembly (2); the four-finger traction assembly (4) comprises a four-finger motor mounting plate (13) and four four-finger traction motors (12) with a telescopic function, and the execution ends of the four-finger traction motors (12) all pass through the four-finger motor mounting plate (13) toward the fixed handle assembly (2); the execution ends of the thumb traction motor (8) and the execution ends of the four-finger traction motor (12) are respectively hinged with five finger fixing mechanisms (11) for fixing fingers; The fixed handle assembly (2) comprises a fixed adjustment seat (6) fixed to the bottom plate (1), a vertical rod (61) is provided on the fixed adjustment seat (6), a vibration motor (7) is fixed on the side wall of the vertical rod (61) in contact with the palm, and a telescopic adjustment rod (5) with a duckbill-shaped top is provided at the upper end of the vertical rod (61); The thumb traction assembly (3) is further provided with a first fixing bracket (10) fixed to the base plate (1), and the thumb motor mounting plate (9) is bolted to the first fixing bracket (10) via a vertically arranged waist hole; The thumb motor mounting plate (9) is provided with a thumb U-shaped groove (91) for slidingly connecting the execution end of the thumb traction motor (8), and a thumb pressing screw (92) for adjusting the movement or swing amplitude of the execution end of the thumb traction motor (8) is provided in the thumb U-shaped groove (91); The four-finger traction assembly (4) is further provided with a second fixing bracket (14) fixed on the base plate (1), and the four-finger motor mounting plate (13) is bolted to the second fixing bracket (14) via a vertically arranged waist hole; Four parallel four-finger U-shaped grooves (131) are formed on the four-finger motor mounting plate (13), and the four-finger U-shaped grooves (131) are respectively used for slidingly connecting the execution ends of the four-finger traction motor (12). Four-finger clamping screws (132) are provided in the four-finger U-shaped grooves (131) for adjusting the movement or swing amplitude of the execution end of the four-finger traction motor (12).

2. The traction-type finger rehabilitation training mechanism according to claim 1, characterized in that: The upper end of the fixed adjustment seat (6) is provided with an arc-shaped groove (62) for placing the palm, and the width of the arc-shaped groove (62) matches the thickness of the user's palm.

3. The traction-type finger rehabilitation training mechanism according to claim 1, characterized in that: The four parallel four-finger U-shaped grooves (131) are arranged in an arc shape on the four-finger motor mounting plate (13).

4. The traction-type finger rehabilitation training mechanism according to claim 1, characterized in that: The finger fixing mechanism (11) comprises a strap (111) and a strap fixing ring (112), one end of the strap fixing ring (112) is a U-shaped block (113) internally hinged to the execution end of the thumb traction motor (8) or the execution end of the four-finger traction motor (12), and the other end of the strap fixing ring (112) is a semicircular plate (114) fixed to the U-shaped block (113), and the semicircular plate (114) is provided with a long hole for fixing the strap (111).

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