Finger rehabilitation training device and use method thereof

Abstract

The present invention discloses a finger rehabilitation training device and a method for using the same. In response to the problems of poor comfort and shear force generated on the finger surface in existing finger rehabilitation training devices, the present invention adopts a multi-link mechanism and a leaf spring mechanism in series to drive the flexion and extension of the finger, thereby achieving rehabilitation training for the finger, improving the comfort of the finger, and making the transmission of force more stable, flexible and uniform. In addition, the present invention fixes the ring on the finger on a connecting piece that is slidably connected to the corresponding connecting block. During the bending and straightening of the finger, when the ring generates shear force on the finger surface, the three connecting pieces respectively generate relative sliding with connecting block one, connecting block two and connecting block three, which can effectively reduce the displacement difference between the position of the corresponding ring when each leaf spring is deformed and the position when the finger is naturally flexed and extended, thereby reducing the shear force generated by the ring on the finger surface, improving the comfort during the flexion and extension of the finger, and preventing the finger from being injured again.

Description

Technical Field

[0001] The present invention belongs to the field of finger rehabilitation training, and in particular relates to a finger rehabilitation training device and a use method thereof. Background Art

[0002] Stroke is a disease caused by various factors that leads to pathological changes in the cerebral arterial and venous systems. It has a high disability rate and can cause limb impairment. The hand, a vital organ, is an integral part of daily life and work. Damage to its function can be difficult to restore, leading to loss of self-care ability and a serious impact on daily life. Studies have shown that with rehabilitation training, approximately 20%-30% of stroke-induced hand paralysis patients can recover hand function sufficient for practical use, and 30%-40% can recover hand function sufficient for assisted living.

[0003] Existing finger rehabilitation treatments rely on rehabilitation physicians and finger rehabilitation training devices. One-on-one rehabilitation therapy by a physician is labor-intensive and expensive, and treatment effectiveness depends on the physician's experience and qualifications, with varying results depending on the physician. Furthermore, due to the physician's limited treatment time and intensity, high-quality treatment cannot be consistently maintained, resulting in low treatment efficiency. The existing finger rehabilitation training device mainly drives the fingers to flex and extend through a multi-link mechanism, but the motion trajectory cannot adapt well to the natural flexion and extension trajectory of the fingers, resulting in poor human-machine compatibility between the finger rehabilitation training device and the various finger joints, poor comfort during finger rehabilitation training, and a relatively complex structure, heavy weight, and high production cost; the existing finger rehabilitation training device also realizes finger rehabilitation training by adopting an elastic element structure, and uses the bending deformation of the elastic element at the finger to drive the finger to flex and extend through a ring, but there are problems of poor stability and uneven force of the elastic element in long-distance transmission, and when the elastic element drives the finger to flex and extend through the ring, a certain displacement difference is generated between the actual position of the ring on the finger and the theoretical position when the finger flexes and extends naturally, which causes the ring to pull the finger and generate shear force on the finger surface, thereby affecting the comfort during finger rehabilitation training, and when the shear force is too large, it may cause secondary damage to the finger. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a finger rehabilitation training device and a method of using the same.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a finger rehabilitation training device, comprising a support plate, an electric cylinder, a connecting rod, a first connecting rod, a first connecting block, a first sliding rod, a second connecting rod, a second sliding rod, a second connecting block, a third connecting block, a first leaf spring, a second leaf spring, a collar and a connecting piece.

[0007] The support plate and the connecting block are arranged at a distance; one end of the electric cylinder is hinged to the end of the support plate away from the connecting block, and the other end is hinged to the middle of the connecting rod; the lower end of the connecting rod is hinged to the end of the support plate close to the connecting block, the upper end is hinged to one end of the connecting rod, and the other end of the connecting rod is hinged to the upper end of the connecting block; the sliding rod one, the connecting rod two and the sliding rod two are arranged between the connecting rod and the connecting block, and one end of the sliding rod one forms a sliding pair with a through groove one opened in the middle of the connecting block, and the other end is hinged to the lower end of the connecting rod two, the upper end of the connecting rod two is hinged to the lower end of the sliding rod two, and the upper end of the sliding rod two is fixed The connecting rod is provided with a through slot 2 in the middle part; one end of the leaf spring 1 passes through the through slot 1 and is fixed to the sliding rod 1, and the middle part passes through the through slot 3 opened at the upper end of the connecting block 2, and the other end is fixed to the upper end of the connecting block 3; the leaf spring 2 is provided with two spaced apart arrangements, and the two ends of one leaf spring 2 are fixed to the lower ends of the connecting block 1 and the connecting block 2, and the two ends of the other leaf spring 2 are fixed to the lower ends of the connecting block 2 and the connecting block 3; the connecting piece is provided with three spaced apart arrangements, and the three connecting rods respectively form sliding pairs with the lower ends of the connecting block 1, the connecting block 2 and the connecting block 3; a ring is fixed on the lower surface of the support plate and each connecting piece.

[0008] Preferably, the central axes of the through slot one, through slot two and through slot three are located in the same vertical plane.

[0009] Preferably, the sliding rod 2 is composed of a threaded rod section and a nut, the lower end of the threaded rod section is hinged to the upper end of the connecting rod 2, the nut is connected to the thread of the upper end of the threaded rod section, and the bottom surface of the nut presses the top surface of the through slot 2.

[0010] Preferably, in the initial state, the support plate, the connecting block 1, the connecting block 2 and the connecting block 3 are arranged in sequence along the same horizontal line, and the leaf spring 1 and the two leaf springs 2 are in a free state.

[0011] Preferably, loosen the connection between the nut and the threaded rod segment, manually adjust the position of the sliding rod 2 in the through slot 2, and thereby adjust the bending degree of the leaf spring 1 so that the support plate, connecting block 1, connecting block 2 and connecting block 3 are arranged in sequence along the same horizontal line in the initial state after assembly, and retighten the nut after adjustment.

[0012] Preferably, when leaf spring 1 ages, the position of sliding rod 2 in through slot 2 is adjusted to compensate for the elastic force of leaf spring 1, so as to restore the initial state in which the support plate, connecting block 1, connecting block 2 and connecting block 3 are arranged in sequence along the same horizontal line.

[0013] Preferably, the connecting block 1 is further provided with a through slot 4 and a guide rail arranged at intervals from top to bottom below the through slot 1, the connecting block 2 is further provided with a through slot 4 and a guide rail arranged at intervals from top to bottom below the through slot 3, and the connecting block 3 is provided with a through slot 3, a through slot 4 and a guide rail arranged at intervals from top to bottom; both sides of the connecting block 1, the connecting block 2 and the connecting block 3 are provided with an integrally formed pin shaft; the connecting pieces are all U-shaped, and the middle part is provided with an integrally formed convex strip, and the inner walls on both sides are provided with a slide groove; the connecting block 1, the connecting block 2 or The two pins on connecting block three are embedded in the two slide grooves of the corresponding connecting parts, and form sliding pairs with the two slide grooves respectively, and the guide rails of connecting block one, connecting block two or connecting block three and the convex strips of the corresponding connecting parts form sliding pairs; the end of leaf spring one away from sliding rod one is fixed to through slot three of connecting block three, the two ends of leaf spring two between connecting block one and connecting block two are fixed to through slot four of connecting block one and connecting block two respectively, and the two ends of leaf spring two between connecting block two and connecting block three are fixed to through slot four of connecting block two and connecting block three respectively.

[0014] Preferably, the collar is made of elastic material.

[0015] The present invention provides a method for using a finger rehabilitation training device, as follows:

[0016] Place the collar on the support plate over your palm, with the support plate positioned on the back of your hand. Then, place the collars on each connector over the proximal, middle, and distal phalanges of your fingers. During operation, the piston rod of the electric cylinder reciprocates, extending and contracting, causing the fingers to bend and straighten.

[0017] When the piston rod of the electric cylinder is extended, the piston rod of the electric cylinder pushes the connecting rod to rotate in the direction close to the connecting block 1, and the connecting rod pushes the connecting block 1 through the connecting rod 1, and the connecting block 1 drives the proximal phalanx to rotate in the direction close to the palm through the corresponding collar. At the same time, the angle between the connecting rod 1 and the connecting block 1 is reduced, so that the sliding rod 1 slides along the sliding groove 1 in the direction away from the connecting rod, and the leaf spring 1 generates elastic force under the thrust of the sliding rod 1, which also causes the two leaf springs 2 to generate elastic force under the bending load, and the leaf spring 2 between the connecting block 1 and the connecting block 2 drives the middle phalanx to rotate in the direction close to the palm through the connecting block 2 and the corresponding collar, and the leaf spring 2 between the connecting block 2 and the connecting block 3 drives the distal phalanx to rotate in the direction close to the palm through the connecting block 3 and the corresponding collar, thereby changing the finger from a straight state to a bent state;

[0018] When the piston rod of the electric cylinder is shortened, the piston rod of the electric cylinder pulls the connecting rod to rotate in the direction away from the connecting block 1, and the connecting rod pulls the connecting block 1 through the connecting rod 1, and the connecting block 1 drives the proximal phalanx to rotate in the direction away from the palm through the corresponding collar. At the same time, the angle between the connecting rod 1 and the connecting block 1 increases, so that the sliding rod 1 slides along the sliding groove 1 in the direction close to the connecting rod, and the sliding rod 1 pulls the leaf spring 1, so that the leaf spring 1 and the two leaf springs 2 return to their original state, and the leaf spring 2 between the connecting block 1 and the connecting block 2 drives the middle phalanx to rotate in the direction away from the palm through the connecting block 2 and the corresponding collar, and the leaf spring 2 between the connecting block 2 and the connecting block 3 drives the distal phalanx to rotate in the direction away from the palm through the connecting block 3 and the corresponding collar, so that the finger changes from a bent state to a straight state;

[0019] During the bending and straightening of the finger, when the ring generates shear force on the finger surface, the proximal phalanx, middle phalanx and distal phalanx drive the corresponding connecting parts and connecting block 1, connecting block 2 and connecting block 3 to slide relative to each other through the corresponding ring.

[0020] The present invention has the following beneficial effects:

[0021] 1. The present invention can drive the fingers to flex and extend, thereby realizing rehabilitation training for the fingers, and has a simple structure, light weight, and low manufacturing cost. Specifically, the present invention drives the proximal phalanx to rotate toward or away from the palm through a multi-link mechanism, and drives the leaf spring structure through the multi-link mechanism, so that each leaf spring in the leaf spring structure is deformed to drive the middle phalanx and the distal phalanx to rotate toward the palm, or drives the middle phalanx and the distal phalanx to rotate away from the palm through the restoring force of each leaf spring in the leaf spring structure, thereby realizing flexion and extension of the fingers. The present invention adopts a multi-link mechanism and a leaf spring mechanism in series, which ingeniously combines the high motion accuracy, high force control robustness and The advantages of high power transmission efficiency and the advantage that the leaf spring structure can be highly consistent with the finger movement trajectory when deformed, greatly enhance the accuracy, compliance, compatibility, convenience and adaptability of the present invention; furthermore, the leaf spring mechanism is composed of three sections of leaf springs and two connecting blocks in series. The three sections of leaf springs can imitate the functions of finger tendons and ligaments to a certain extent, and provide support and feedback similar to the natural movement of the human body during exercise. It can better adapt to local mechanical requirements, and can effectively absorb and buffer impact force during finger joint movement, avoiding excessive concentration of force on the overall structure, making the force transmission more stable, flexible and uniform, thereby reducing the risk of joint injury.

[0022] 2. In the present invention, the collars used on the proximal phalanx, middle phalanx and distal phalanx are fixed on three connecting parts, and these three connecting parts are slidably connected to the connecting block 1, the connecting block 2 and the connecting block 3 respectively, so that when the collars generate shear force on the finger surface during the bending and extension of the finger, the proximal phalanx, the middle phalanx and the distal phalanx drive the three connecting parts to slide relative to the connecting block 1, the connecting block 2 and the connecting block 3 respectively, effectively reducing the displacement difference between the actual position of the collars during the flexion and extension of the finger and the theoretical position during the natural flexion and extension of the finger, thereby reducing the shear force generated by the collars on the finger surface, improving the comfort of the finger during flexion and extension, and preventing the finger from being injured again.

[0023] 3. The present invention allows manual adjustment of the position of the second sliding rod within the second through-slot by loosening the connection between the nut and the threaded rod segment, thereby adjusting the degree of bending of the first leaf spring to achieve an initial arrangement of the support plate, the first connecting block, the second connecting block, and the third connecting block along the same horizontal line in sequence after assembly. After adjustment, the nut can be re-tightened. Furthermore, when the first leaf spring ages, the position of the second sliding rod within the second through-slot can be adjusted to compensate for the elastic force of the first leaf spring, thereby re-establishing the initial arrangement of the support plate, the first connecting block, the second connecting block, and the third connecting block along the same horizontal line in sequence, and ensuring that the fingers are bent and extended to the designed, accurate positions during training.

[0024] 4. During use, the present invention uses the proximal phalanx of the finger as a part of the multi-link mechanism, making the proximal phalanx one of the key components of the multi-link mechanism. The present invention relies on the proximal phalanx to have a high self-alignment ability, further ensuring the movement accuracy and force control stability of the present invention.

[0025] 5. The present invention can also cut off the power supply of the electric cylinder, so that the fingers can actively bend and straighten back and forth, thereby performing load-strengthening training. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of the initial state of the present invention;

[0027] Figure 2 This is a schematic structural diagram of the connecting piece and the second or third connecting block in the present invention;

[0028] Figure 3 It is a schematic diagram of the bending state structure of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] like Figure 1As shown, the present invention provides a finger rehabilitation training device, including a support plate 1, an electric cylinder 2, a connecting rod 3, a connecting rod 1 4, a connecting block 1 5, a sliding rod 1 6, a connecting rod 2 7, a sliding rod 2 8, a connecting block 2 9, a connecting block 3 10, a leaf spring 1 11, a leaf spring 2 12, a collar 13 and a connecting piece 14.

[0031] The supporting plate 1 and the connecting block 5 are arranged at intervals; one end of the electric cylinder 2 is hinged to the end of the supporting plate 1 away from the connecting block 5, and the other end is hinged to the middle of the connecting rod 3; the lower end of the connecting rod 3 is hinged to the end of the supporting plate 1 close to the connecting block 5, and the upper end is hinged to one end of the connecting rod 4, and the other end of the connecting rod 4 is hinged to the upper end of the connecting block 5; the sliding rod 1 6, the connecting rod 2 7 and the sliding rod 2 8 are arranged between the connecting rod 3 and the connecting block 5, and one end of the sliding rod 1 6 and the through groove 1 opened in the middle of the connecting block 5 form a sliding pair, and the other end is hinged to the lower end of the connecting rod 2 7, the upper end of the connecting rod 2 7 is hinged to the lower end of the sliding rod 2 8, and the upper end of the sliding rod 2 8 is fixed in the through groove 2 opened in the middle of the connecting rod 4. Specifically, the sliding rod 2 8 consists of a threaded rod section and a nut, the lower end of the threaded rod section is hinged to the upper end of the connecting rod 2 7, and the nut is hinged to the threaded rod at the upper end of the threaded rod section The connecting piece 14 is provided with three connecting pieces, and the three connecting pieces 14 form a sliding pair with the lower ends of the connecting blocks 15, 20 and 29; the connecting piece 14 is provided with a sleeve 13 and a sleeve 14, and the sleeve 13 on the lower surface of the connecting block 1 is fixed to the sleeve 13. When the cam 11 is in a state of tension, the spring 11 is in a state of tension, and the spring 11 is in a state of tension.

[0032] As a preferred embodiment, Figure 2 As shown, the connecting block 1 5 is further provided with a through slot 4 and a guide rail arranged at intervals from top to bottom under the through slot 1, the connecting block 2 9 is further provided with a through slot 4 and a guide rail arranged at intervals from top to bottom under the through slot 3, and the connecting block 3 10 is provided with a through slot 3, a through slot 4 and a guide rail arranged at intervals from top to bottom; both sides of the connecting block 1 5, the connecting block 2 9 and the connecting block 3 10 are provided with an integrally formed pin shaft; the connecting members 14 are all U-shaped, and are provided with an integrally formed convex strip in the middle, and the inner walls on both sides are provided with a slide groove; the two pin shafts on the connecting block 1 5, the connecting block 2 9 or the connecting block 3 are embedded in the two slide grooves of the corresponding connecting member 14, and respectively form a groove with the two slide grooves A sliding pair is formed (both ends of the slide are closed, and the sliding position of the slide relative to the pin is limited to prevent the connecting member 14 from separating from the connecting block 1 5, the connecting block 2 9 or the connecting block 3), and the guide rails of the connecting block 1 5, the connecting block 2 9 or the connecting block 3 and the convex strips of the corresponding connecting member 14 form a sliding pair; the end of the leaf spring 11 away from the sliding rod 1 6 is fixed to the through slot 3 of the connecting block 3 10, and the two ends of the leaf spring 2 12 between the connecting block 1 5 and the connecting block 2 9 are respectively fixed to the through slots 4 of the connecting block 1 5 and the connecting block 2 9, and the two ends of the leaf spring 2 12 between the connecting block 2 and the connecting block 3 10 are respectively fixed to the through slots 4 of the connecting block 2 and the connecting block 3 10.

[0033] As a preferred embodiment, the collar 13 is made of elastic material.

[0034] The present invention provides a method for using a finger rehabilitation training device, as follows:

[0035] Place the ring 13 on the support plate 1 on the palm of your hand, with the support plate 1 positioned on the back of your hand. Place the rings 13 on each connector 14 on the proximal, middle, and distal phalanges of your fingers. During operation, the piston rod of the electric cylinder reciprocates, extending and contracting, causing the fingers to bend and straighten back and forth for training.

[0036] When the piston rod of the electric cylinder 2 is extended, the piston rod of the electric cylinder 2 pushes the connecting rod 3 to rotate in the direction of approaching the connecting block 1 5, and the connecting rod 3 pushes the connecting block 1 5 through the connecting rod 1 4. The connecting block 1 5 drives the proximal phalanx to rotate in the direction close to the palm through the corresponding ring 13. At the same time, the angle between the connecting rod 1 4 and the connecting block 1 5 is reduced, so that the sliding rod 1 6 slides along the sliding groove 1 in the direction away from the connecting rod, and the leaf spring 1 1 generates elastic force under the thrust of the sliding rod 1 6, which also causes the two leaf springs 2 12 to generate elastic force under the bending load, and the leaf spring 2 12 between the connecting block 1 5 and the connecting block 2 9 drives the middle phalanx to rotate in the direction close to the palm through the connecting block 2 9 and the corresponding ring 13, and the leaf spring 2 12 between the connecting block 2 9 and the connecting block 3 10 drives the distal phalanx to rotate in the direction close to the palm, thereby changing the finger from the straight state to the bent state. Figure 3 shown.

[0037] When the piston rod of the electric cylinder 2 is shortened, the piston rod of the electric cylinder 2 pulls the connecting rod 3 to rotate in the direction away from the connecting block 15, and the connecting rod 3 pulls the connecting block 15 through the connecting rod 14. The connecting block 15 drives the proximal phalanx to rotate in the direction away from the palm through the corresponding ring 13. At the same time, the angle between the connecting rod 14 and the connecting block 15 increases, so that the sliding rod 16 slides along the slide groove 1 in the direction close to the connecting rod, and the sliding rod 16 pulls the leaf spring 11, so that the leaf spring 11 and the two leaf springs 2 12 return to their original state, and the leaf spring 2 12 between the connecting block 15 and the connecting block 2 9 drives the middle phalanx to rotate in the direction away from the palm through the connecting block 2 9 and the corresponding ring 13, and the leaf spring 2 12 between the connecting block 2 9 and the connecting block 3 10 drives the distal phalanx to rotate in the direction away from the palm through the connecting block 3 10 and the corresponding ring 13, thereby changing the finger from a bent state to a straight state.

[0038] Among them, during the bending and extension of the fingers, when the collar generates shear force on the surface of the fingers, the proximal phalanx, middle phalanx and distal phalanx drive the corresponding connecting parts 14 to slide relative to the connecting blocks 1 5, 2 9 and 3 10 respectively through the corresponding collars 13. When the leaf springs 11 and 2 12 are deformed, the displacement difference between the actual position of the collar 13 at the connecting blocks 1 5, 2 9 and 3 10 and the theoretical position during the natural flexion and extension of the fingers is effectively reduced, thereby reducing the shear force generated by the collar on the surface of the fingers, improving the comfort during the flexion and extension of the fingers, and preventing the fingers from being injured again.

[0039] The present invention can also realize an enhanced rehabilitation training mode. In this training mode, the electric cylinder is powered off, and the fingers actively bend and straighten back and forth, thereby performing load-enhanced training.

Claims

1. A finger rehabilitation training device, comprising a support plate, an electric cylinder, a connecting rod and a collar, characterized in that: The cam is connected to the support block 1 and the support plate is connected to the support plate 2, and the other end is connected to the middle of the connecting rod; the lower end of the connecting rod is hinged to the end of the support plate close to the connecting block 1, the upper end is hinged to one end of the connecting rod 1, and the other end of the connecting rod 1 is hinged to the upper end of the connecting block 1; the sliding rod 1, the connecting rod 2 and the sliding rod 2 are arranged between the connecting rod and the connecting block 1, and one end of the sliding rod 1 and the through groove 1 opened in the middle of the connecting block 1 form a sliding pair, and the other end is hinged to the lower end of the connecting rod 2. The upper end of the leaf spring is hinged with the lower end of the sliding rod two, and the upper end of the sliding rod two is fixed in the through slot two opened in the middle of the connecting rod one; one end of the leaf spring one passes through the through slot one and is fixed to the sliding rod one, and the middle part passes through the through slot three opened at the upper end of the connecting block two, and the other end is fixed to the upper end of the connecting block three; the leaf spring two is provided with two spaced apart arrangements, and the two ends of one leaf spring two are fixed to the lower ends of the connecting block one and the connecting block two, and the two ends of the other leaf spring two are fixed to the lower ends of the connecting block two and the connecting block three; the connecting parts are provided with three spaced apart arrangements, and the three connecting parts respectively form sliding pairs with the lower ends of the connecting block one, the connecting block two and the connecting block three; a collar is fixed to the lower surface of the support plate and each connecting part; The central axes of the through slot 1, through slot 2 and through slot 3 are located in the same vertical plane; The second sliding rod is composed of a threaded rod section and a nut. The lower end of the threaded rod section is hinged to the upper end of the second connecting rod. The nut is connected to the thread of the upper end of the threaded rod section, and the bottom surface of the nut presses the top surface of the second through groove. In the initial state, the support plate, the connecting block 1, the connecting block 2 and the connecting block 3 are arranged in sequence along the same horizontal line, and the leaf spring 1 and the two leaf springs 2 are in a free state; Loosen the connection between the nut and the threaded rod segment, manually adjust the position of the sliding rod 2 in the through slot 2, and thus adjust the bending degree of the leaf spring 1, so that the support plate, connecting block 1, connecting block 2 and connecting block 3 are arranged in sequence along the same horizontal line in the initial state after assembly. After adjustment, re-tighten the nut; When the leaf spring 1 ages, the position of the sliding rod 2 in the through slot 2 is adjusted to compensate for the elastic force of the leaf spring 1, so as to restore the initial state in which the support plate, connecting block 1, connecting block 2 and connecting block 3 are arranged in sequence along the same horizontal line.

2. The finger rehabilitation training device according to claim 1, characterized in that: The connecting block 1 is further provided with a through slot 4 and a guide rail arranged at intervals from top to bottom below the through slot 1, the connecting block 2 is further provided with a through slot 4 and a guide rail arranged at intervals from top to bottom below the through slot 3, and the connecting block 3 is provided with a through slot 3, a through slot 4 and a guide rail arranged at intervals from top to bottom; both sides of the connecting block 1, the connecting block 2 and the connecting block 3 are provided with an integrally formed pin shaft; the connecting pieces are all U-shaped, and the middle part is provided with an integrally formed convex strip, and the inner walls on both sides are provided with a slide groove; the connecting block 1, the connecting block 2 or the connecting block The two pins on block three are embedded in the two slide grooves of the corresponding connecting parts, and form sliding pairs with the two slide grooves respectively, and the guide rails of connecting block one, connecting block two or connecting block three and the convex strips of the corresponding connecting parts form sliding pairs; the end of leaf spring one away from sliding rod one is fixed to through slot three of connecting block three, the two ends of leaf spring two between connecting block one and connecting block two are fixed to through slot four of connecting block one and connecting block two respectively, and the two ends of leaf spring two between connecting block two and connecting block three are fixed to through slot four of connecting block two and connecting block three respectively.

3. The finger rehabilitation training device according to claim 1, characterized in that: The sleeve ring is made of elastic material.

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