Magnetic drive finger rehabilitation trainer

Abstract

The present invention discloses a magnetic force driven finger rehabilitation training device, comprising a hand back support plate, a swing arm located in front of the hand back support plate, an arc-shaped slot plate arranged on the swing arm, a first permanent magnet arranged on the back of the swing arm or the arc-shaped slot plate, a finger sleeve for wearing on the third knuckle of a finger, a second permanent magnet arranged on the finger sleeve, a first electromagnetic coil for applying magnetic force to the first permanent magnet and the second permanent magnet, a DC power supply and a control unit for supplying power to the first electromagnetic coil, wherein the control unit is used to control the magnitude and direction of the current output by the DC power supply to the first electromagnetic coil. Patients can complete finger rehabilitation training by themselves using the training device, and can control the magnitude of the magnetic force driving the first permanent magnet and the second permanent magnet by controlling the magnitude of the current, and can control the direction of the magnetic force by controlling the direction of the current, thereby adjusting the swing amplitude of each finger joint and the frequency of the reciprocating rotation of the finger, and can better meet the actual needs of the patient's finger training.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation equipment, and in particular to a finger rehabilitation trainer. Background Art

[0002] For patients with hand dysfunction after stroke and hand trauma, the hand function impairment seriously reduces the patient's quality of life, brings a huge burden to the patient's family, and has a great impact on society. Traditional rehabilitation training treatment is completed with the help of rehabilitation physicians, and its treatment method has certain limitations: the training efficiency and training intensity are greatly affected by the subjective influence of rehabilitation physicians, and the training effect depends to a large extent on the level and experience of rehabilitation physicians; it is impossible to accurately control the training parameters such as the speed, trajectory and intensity of the training. At the same time, with the aging of the population, the number of patients who need rehabilitation is increasing. The current "one-to-one" rehabilitation training model between patients and rehabilitation therapists is prone to waste medical resources. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a magnetically driven finger rehabilitation trainer to solve the technical problems in the prior art that finger rehabilitation training requires the help of a rehabilitation physician, patients cannot complete the training by themselves, and the training effect is greatly affected by the subjective experience of the rehabilitation physician.

[0004] The magnetic force driven finger rehabilitation training device of the present invention comprises a horizontally arranged back of hand support plate, and also comprises a swing arm located in front of the back of hand support plate and rotating in a vertical plane, an arc-shaped slot plate arranged on the swing arm for supporting the first knuckle or the second knuckle of a finger, a first permanent magnet arranged on the back of the swing arm or the arc-shaped slot plate, a strap arranged on the arc-shaped slot plate for limiting the finger, a finger sleeve for wearing on the third knuckle of the finger, a second permanent magnet arranged on the finger sleeve, a first electromagnetic coil located below the back of the hand support plate for applying alternating repulsive force and attractive force to the first permanent magnet and the second permanent magnet, a DC power supply and a control unit for powering the first electromagnetic coil, wherein the control unit is used to control the magnitude and direction of the current output by the DC power supply to the first electromagnetic coil.

[0005] Furthermore, the magnetically driven finger rehabilitation trainer also includes a box body and a box cover hinged to the box body, and the control unit and the back-of-hand support plate are arranged in the box body.

[0006] Furthermore, a second electromagnetic coil connected to a DC power supply is also provided on the box cover, and the second electromagnetic coil is used to apply alternating repulsive force and attractive force to the first permanent magnet and the second permanent magnet. The control unit is also used to control the magnitude and direction of the current output by the DC power supply to the second electromagnetic coil.

[0007] Furthermore, the magnetically driven finger rehabilitation trainer also includes an automatic telescopic rod located below the back of the hand support plate for driving the swing arm to rotate, and the control unit is also used to control the telescopic length and telescopic frequency of the automatic telescopic rod.

[0008] Furthermore, the magnetic force driven finger rehabilitation trainer further comprises a transverse guide rail fixedly arranged in the box body and a longitudinal guide rail arranged on the transverse guide rail and capable of translating along the transverse guide rail, wherein the longitudinal guide rail is located below the back of hand support plate;

[0009] The box body is provided with a support for the back of the hand support plate, the longitudinal guide rail is provided with a horizontal axis hinged to the swing arm, the rear end of the automatic telescopic rod is hinged to the longitudinal guide rail, and the front end of the automatic telescopic rod is hinged to the swing arm;

[0010] Or the longitudinal guide rail is provided with a support for supporting the back of the hand support plate, one end of the automatic telescopic rod is hinged to the rear part of the back of the hand support plate, and the other end of the automatic telescopic rod is hinged to the swing arm.

[0011] Furthermore, the automatic telescopic rod is an electric push rod or a hydraulic push rod.

[0012] Furthermore, the magnetically driven finger rehabilitation trainer also includes a wrist fixing sleeve arranged at the edge of the box body.

[0013] Furthermore, the magnetic force driven finger rehabilitation trainer also includes a ring belt for being put on the palm, a magnet seat which is put on the ring belt and can move along the ring belt, and a third permanent magnet arranged on the magnet seat.

[0014] Beneficial effects of the present invention:

[0015] The magnetic force driven finger rehabilitation trainer of the present invention drives the first permanent magnet and the second permanent magnet by the magnetic force generated by the electromagnetic coil to rotate the finger joints, thereby achieving the purpose of finger rehabilitation training. The patient can complete the finger rehabilitation training by himself using the trainer, which solves the problem that the finger rehabilitation training needs the help of a rehabilitation physician. In addition, the magnetic force driven finger rehabilitation trainer can control the magnetic force driving the first permanent magnet and the second permanent magnet by controlling the magnitude of the current, and can control the direction of the magnetic force by controlling the direction of the current, and further by controlling the magnitude and direction of the current, the swing amplitude of the finger joints and the frequency of the finger reciprocating rotation can be adjusted, which can better meet the actual needs of the patient's finger training. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of a magnetically driven finger rehabilitation trainer;

[0017] Figure 2 A three-dimensional schematic diagram of a finger placed in a magnetically driven finger rehabilitation trainer;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the swing arm, the automatic telescopic push rod and the back of the hand support plate combination;

[0019] Figure 4 It is a three-dimensional schematic diagram of the magnetic force driven finger rehabilitation trainer after removing the box body and the box cover;

[0020] Figure 5 This is a three-dimensional schematic diagram of the magnetic-driven finger rehabilitation trainer after the back-of-hand support plate is removed. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] As shown in the figure, the magnetic force driven finger rehabilitation trainer in this embodiment includes a horizontally arranged back of hand support plate 1, and also includes a swing arm 2 located in front of the back of hand support plate and rotating in a vertical plane, an arc-shaped slot plate 3 arranged on the swing arm for supporting the first knuckle or the second knuckle of the finger, a first permanent magnet 4 arranged on the back of the swing arm or the arc-shaped slot plate, a strap 5 arranged on the arc-shaped slot plate for limiting the finger, a finger sleeve 6 worn on the third knuckle of the finger, a second permanent magnet 7 arranged on the finger sleeve, a first electromagnetic coil 8 located below the back of the back of the hand support plate for applying alternating repulsive force and attractive force to the first permanent magnet and the second permanent magnet, a DC power supply and a control unit 9 for powering the first electromagnetic coil, wherein the control unit is used to control the magnitude and direction of the current output by the DC power supply to the first electromagnetic coil.

[0023] When the magnetic force driven finger rehabilitation trainer in this embodiment is used to train fingers, the first or second knuckle of the trained finger is fixed in the arc groove plate 3, and the finger is limited by the strap 5 to prevent it from falling off the arc groove plate, and then the finger sleeve 6 is worn on the third knuckle, which corresponds to the fingertip, and the control unit can be turned on to control the DC power supply to supply power to the first electromagnetic coil. The control unit is used to control the magnitude and direction of the output current of the DC power supply to the first electromagnetic coil. When it is necessary to increase the push and pull force on the finger, the output current of the DC power supply can be increased; conversely, when it is necessary to reduce the push and pull force on the finger, the output current of the DC power supply can be reduced. By changing the direction of the current in the first electromagnetic coil, the direction of the magnetic field generated by the first electromagnetic coil can be changed, so that the first electromagnetic coil can apply alternating repulsive force and attractive force to the first permanent magnet and the second permanent magnet, so as to promote the bending and reciprocating swing of the finger joints. The first permanent magnet and the second permanent magnet can respectively apply force to each joint, so that each joint of the finger can be better trained in a targeted manner. Patients can complete finger rehabilitation training by themselves using the trainer, which solves the problem that finger rehabilitation training requires the help of rehabilitation physicians.

[0024] As an improvement to the above embodiment, the magnetically driven finger rehabilitation trainer further comprises a box body 10 and a box cover 11 hinged on the box body, and the control unit and the hand back support plate are arranged in the box body. The magnetically driven finger rehabilitation trainer is enclosed in the box body, and is convenient to use and store.

[0025] As an improvement to the above embodiment, the box cover is further provided with a second electromagnetic coil 13 connected to a DC power supply, the second electromagnetic coil is used to apply an alternating repulsive force and an attractive force to the first permanent magnet and the second permanent magnet, and the control unit is further used to control the magnitude and direction of the current output by the DC power supply to the second electromagnetic coil. By providing the second electromagnetic coil 13, the improvement enables the first permanent magnet and the second permanent magnet to apply a repulsive force and an attractive force from front to back, which can better promote the bending and resetting of the finger joints and improve the training effect.

[0026] As an improvement to the above embodiment, the magnetic force driven finger rehabilitation training device also includes an automatic telescopic rod 14 located below the back of the hand support plate for driving the swing arm to rotate, and the control unit is also used to control the telescopic length and telescopic frequency of the automatic telescopic rod. Under normal circumstances, the automatic telescopic rod is driven by the finger to swing and telescope freely; once an abnormality occurs, the control unit intervenes to control the automatic telescopic rod so that it can provide a greater push-pull force. When the finger joint muscles are cramped or due to other diseases, that is, abnormal conditions, the magnetic force cannot push and pull the finger joints, and the finger joints can be pushed to move by controlling the automatic telescopic rod. In a specific implementation, the control unit records the initial position of the automatic telescopic rod and the maximum bending position of the finger to form a range of finger movement. At the same time, the telescopic amount of the telescopic rod corresponding to the finger movement will form a motion parameter variable and feedback to the control unit. When the finger joint muscles are cramped or due to other diseases, the magnetic force is insufficient to cause the finger joints to move, and the motion parameter variable will remain unchanged. When the variable remains unchanged for a period of time exceeding the set motion protection time, the control unit determines that the finger joint muscles are cramped, and the control unit intervenes to control the automatic telescopic rod to provide active push-pull force. In addition, the automatic telescopic rod can be an electric push rod or a hydraulic push rod.

[0027] As an improvement to the above-mentioned embodiment, the magnetic force driven finger rehabilitation trainer also includes a transverse guide rail 15 fixedly arranged in the box body and a longitudinal guide rail 16 arranged on the transverse guide rail and capable of translating along the transverse guide rail, wherein the longitudinal guide rail is located below the back of the hand support plate. The longitudinal guide rail is provided with a support for supporting the back of the hand support plate, one end of the automatic telescopic rod is hinged to the rear of the back of the hand support plate, and the other end of the automatic telescopic rod is hinged to the swing arm. Of course, in different embodiments, the box body may be provided with a support for supporting the back of the hand support plate, the longitudinal guide rail may be provided with a horizontal axis hinged to the swing arm, the rear end of the automatic telescopic rod may be hinged to the longitudinal guide rail, and the front end of the automatic telescopic rod may be hinged to the swing arm. In this improvement, the swing arm 2 and the arc-shaped slot plate 3 thereon can move along the transverse guide rail, so that it can adapt to the training of different fingers.

[0028] As an improvement to the above embodiment, the magnetic force driven finger rehabilitation trainer further comprises a wrist fixing sleeve 17 arranged at the edge of the box body. The wrist fixing sleeve is arranged to fix the wrist, which can prevent the hand from shifting during finger rehabilitation training.

[0029] As an improvement to the above embodiment, the magnetic force driven finger rehabilitation trainer further comprises a ring belt 18 for being put on the palm, a magnet seat 19 which is put on the ring belt and can move along the ring belt, and a third permanent magnet 20 arranged on the magnet seat. This improvement enables the third permanent magnet to guide and assist in driving the bending of the finger, and the position of the third permanent magnet can be adjusted along the ring belt, so that it can better adapt to different fingers.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A magnetically driven finger rehabilitation trainer, comprising a horizontally arranged back-of-hand support plate, characterized in that: It also includes a swing arm located in front of the hand back support plate and rotating in a vertical plane, an arc-shaped slot plate arranged on the swing arm for supporting the first knuckle or the second knuckle of a finger, a first permanent magnet arranged on the back of the swing arm or the arc-shaped slot plate, a strap arranged on the arc-shaped slot plate for limiting the finger, a finger sleeve for wearing on the third knuckle of the finger, a second permanent magnet arranged on the finger sleeve, a first electromagnetic coil located below the hand back support plate for applying an alternating repulsive force and an attractive force to the first permanent magnet and the second permanent magnet, a DC power supply for powering the first electromagnetic coil, and a control unit, wherein the control unit is used to control the magnitude and direction of the current output by the DC power supply to the first electromagnetic coil; The magnetic force driven finger rehabilitation trainer also includes a box body and a box cover hinged on the box body, and the control unit and the hand back support plate are arranged in the box body; The magnetic force driven finger rehabilitation trainer further comprises an automatic telescopic rod located below the hand back support plate for driving the swing arm to rotate, and the control unit is further used to control the telescopic length and telescopic frequency of the automatic telescopic rod; The magnetic force driven finger rehabilitation trainer further comprises a transverse guide rail fixedly arranged in the box body and a longitudinal guide rail arranged on the transverse guide rail and capable of translating along the transverse guide rail, wherein the longitudinal guide rail is located below the back of hand support plate; The box body is provided with a support for the back of the hand support plate, the longitudinal guide rail is provided with a horizontal axis hinged to the swing arm, the rear end of the automatic telescopic rod is hinged to the longitudinal guide rail, and the front end of the automatic telescopic rod is hinged to the swing arm; Or the longitudinal guide rail is provided with a support for supporting the back of the hand support plate, one end of the automatic telescopic rod is hinged to the rear part of the back of the hand support plate, and the other end of the automatic telescopic rod is hinged to the swing arm.

2. The magnetically driven finger rehabilitation trainer according to claim 1, characterized in that: The box cover is also provided with a second electromagnetic coil connected to a DC power supply, and the second electromagnetic coil is used to apply alternating repulsive force and attractive force to the first permanent magnet and the second permanent magnet. The control unit is also used to control the magnitude and direction of the current output by the DC power supply to the second electromagnetic coil.

3. The magnetically driven finger rehabilitation trainer according to claim 1, characterized in that: The automatic telescopic rod is an electric push rod or a hydraulic push rod.

4. The magnetically driven finger rehabilitation trainer according to claim 1, characterized in that: It also includes a wrist fixing sleeve arranged on the edge of the box body.

5. The magnetically driven finger rehabilitation trainer according to claim 1, characterized in that: The utility model also comprises a ring belt for being covered on the palm, a magnet seat which is covered on the ring belt and can move along the ring belt, and a third permanent magnet arranged on the magnet seat.

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