Auxiliary fixing instrument for nerve injury repair

Abstract

The invention relates to the technical field of rehabilitation instruments, in particular to a nerve injury repair auxiliary fixing instrument which comprises a palm rest. A plurality of first finger separating plates are fixedly connected to the side wall of the palm rest, second finger separating plates are hinged to the ends, away from the palm rest, of the first finger separating plates, and third finger separating plates are hinged to the ends, away from the first finger separating plates, of the second finger separating plates; an L-shaped supporting rod is fixedly connected to one side wall of the palm rest, and a fixing assembly is installed at the end, away from the palm rest, of the supporting rod. First elastic bands are fixedly connected to the tops of the first finger separating plate, the second finger separating plate and the third finger separating plate; the bottoms of the third finger separating plates are fixedly connected with fixing blocks, the side walls of the fixing blocks are fixedly connected with springs, and the springs are fixedly connected with the bottoms of the second finger separating plates and the first finger separating plates adjacent to the springs. A traction assembly is arranged at the bottom of the palm rest; and guide assemblies are arranged on the side walls of the first finger separating plates. The fixing position and angle of the finger joint can be adjusted, and multi-dimensional function regulation and control of finger joint rehabilitation are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation equipment, and in particular to an auxiliary fixation device for repairing nerve damage. Background Art

[0002] The radial nerve is a vital nerve in the upper limb, susceptible to injury in a variety of situations, including humeral fractures, forearm trauma, and surgical injuries. According to statistics, the incidence of radial nerve injury in patients with humeral fractures is approximately 10%-18%. Radial nerve injury can lead to severe upper limb dysfunction, such as finger extension impairment, significantly impacting patients' daily lives and work.

[0003] In the existing technology, fingerboards are usually used to assist in fixation and rehabilitation after radial nerve injury surgery. However, the fixed position and angle of the finger joints of the existing fingerboards cannot be accurately adjusted, and the functions of the fingerboards are relatively limited. They can only simply maintain the extended state of the fingers, making it difficult to comprehensively consider the overall functional rehabilitation of the fingers and difficult to meet the diverse needs of patients who gradually advance during the rehabilitation process.

[0004] To sum up, how to solve the problem in the existing technology that a fingerboard is usually used for auxiliary fixation and repair of radial nerve injury after surgery, the fingerboard has a relatively limited function and can only simply maintain the extended state of the finger, making it difficult to comprehensively consider the overall functional rehabilitation of the finger and difficult to meet the patient's gradually advanced diversified needs during the rehabilitation process has become a difficult problem that needs to be solved urgently in this field. Therefore, it is necessary to propose a nerve injury repair auxiliary fixation device. Summary of the Invention

[0005] In order to solve the above problems, the present invention provides a nerve injury repair auxiliary fixation device for adjusting the fixed position and angle of the finger joints to achieve multi-dimensional functional regulation of finger joint rehabilitation.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a nerve injury repair auxiliary fixation device, including a palm rest; a plurality of first finger plates are fixedly connected to the side wall of the palm rest, the first finger plates are hinged to the second finger plates at one end away from the palm rest, and the second finger plates are hinged to the third finger plates at one end away from the first finger plates; an "L"-shaped support rod is fixedly connected to one side wall of the palm rest, and a fixing component for fixing the palm rest is installed at the end of the support rod away from the palm rest.

[0007] The tops of the first finger plate, the second finger plate and the third finger plate are all fixedly connected to the first elastic band; the bottom of the third finger plate is fixedly connected to a fixed block, and the side walls of the fixed block are fixedly connected to springs, which are fixedly connected to the bottoms of the second finger plate and the first finger plate adjacent to it.

[0008] The bottom of the palm rest is provided with a traction component for driving the second and third fingerboards to bend; the side walls of the first fingerboard are provided with guide components for guiding the bending of the second and third fingerboards.

[0009] The technical principles of the above scheme are as follows:

[0010] When a patient uses this nerve injury repair auxiliary fixation device, the fixation component secures the palm rest to the chair armrest, while the traction component bends the third fingerplate downward around its hinge with the second fingerplate. The guide component ensures the stability of the fingerplate's trajectory during bending, preventing deviation or jamming. The spring acts as a buffer and resetter during the bending of the third and second fingerplates. When the pull cord bends the fingerplate, the spring is stretched, storing elastic potential energy. When the drive stops and the cord relaxes, the spring releases the elastic potential energy, slowly pushing the third and second fingerplates back into position. The first elastic band constantly conforms to the finger, providing a certain degree of restraint to ensure the finger is accurately fixed on the fingerplate without hindering its normal movement. The bending and stretching of the finger optimizes the nerve's condition, promoting nerve recovery and repairing radial nerve injuries.

[0011] The above scheme has the following beneficial effects:

[0012] 1. The present invention can regulate the bending angles of the second and third fingerboards to adjust the fixed position and angle of the finger joints, effectively overcoming the defect that the existing fingerboards cannot be accurately adjusted, providing patients with radial nerve injury with a fixation solution that better meets individual needs and promotes the improvement of rehabilitation effects.

[0013] 2. The present invention is equipped with a guide component to ensure that the movement trajectory of the finger plate is stable during the bending process. At the same time, combined with the buffering and reset effects of the spring, it can not only maintain the extended state of the fingers, but also gradually increase the range of motion of the fingers according to the patient's recovery condition during the rehabilitation process, thereby realizing multi-dimensional functional regulation from simple fixation to functional exercise, taking into account the overall functional rehabilitation of the fingers, and being able to meet the diverse needs of patients who gradually advance in the rehabilitation process to a certain extent.

[0014] 3. The fixing component of the present invention can conveniently fix the palm rest to a position such as a chair armrest, making it convenient for patients to use in daily life scenarios, improving the convenience and comfort of patients, and improving the patient's experience during the postoperative recovery period after radial nerve injury.

[0015] Furthermore, the fixing assembly includes a "U"-shaped bracket, the top of the bracket is fixedly connected to the end of the support rod away from the palm rest, a threaded hole is opened on the top of the bracket, the inner thread of the threaded hole is fitted with a hand-tightening bolt, and the bottom end of the hand-tightening bolt is fixedly connected to the support block.

[0016] Beneficial effects: The bracket is fixed to the armrest of the chair by hand-tightening bolts, so that the palm rest can be firmly fixed on various common supports, enhancing the versatility of the device's usage scenarios. Whether it is a chair in a hospital ward or an everyday chair in the patient's home, it can be installed quickly and easily, providing convenience for patients to carry out rehabilitation training anytime and anywhere.

[0017] Furthermore, the traction assembly includes a drive box, a drive member and a controller. The drive box is fixedly connected to the bottom of the palm rest, the drive member is fixedly connected to a side wall of the drive box, and the controller is used to control the rotation of the output shaft of the drive member; the output shaft of the drive member passes through the adjacent side wall of the drive box and is coaxially fixedly connected to the rotating shaft; a pull rope is fixedly connected to the side wall of the fixed block, and the end of the pull rope away from the fixed block passes through the drive box and extends into the drive box; a retraction assembly for pulling the pull rope is rotatably matched on the rotating shaft.

[0018] Beneficial effect: The contraction component pulls the pull rope, and the pull rope can drive the third finger plate to bend around the second finger plate, so that the traction component can drive the finger bending movement. The bending and stretching of the finger can put the nerve in the best state, promote the recovery and healing of the nerve, and realize the repair of radial nerve injury.

[0019] Furthermore, the retraction assembly includes several winding wheels, which are all rotatably matched with the rotating shaft and are fixedly connected to the end of the pull rope adjacent to them away from the fixed block; several electromagnets are circumferentially embedded on the rotating shaft and the rotating matching position of the winding wheels, and the controller is used to control the opening and closing of the electromagnets; several sliding grooves are opened in the winding wheels, and iron cores are slidably matched in the sliding grooves.

[0020] Beneficial effects: The controller controls the rotation of the output shaft of the driving member, so that the rotating shaft rotates; when rehabilitation stretching training is required for a single finger or multiple fingers, the controller energizes the electromagnet adjacent to the corresponding finger. At this time, the electromagnet can attract the iron core on the adjacent winding wheel. At this time, the winding wheel and the rotating shaft are in an electromagnetic engagement state, so that the corresponding winding wheel rotates. The rotation of the winding wheel causes the corresponding pull rope to be wound around the winding wheel. At this time, the pull rope can pull the fixed block and then drive the third finger plate to bend downward, and then drive the corresponding finger to bend, realizing the traction function of the corresponding finger. At the same time, the function of rotating any one winding wheel or multiple winding wheels can be selected through one driving member, which reduces the complexity of the device and reduces the cost.

[0021] Furthermore, the guide assembly includes first gears that are rotatably engaged with the side walls of the first and third finger plates; second gears are symmetrically rotatably engaged with the side walls of the second finger plates, adjacent second gears are meshed with each other, and first gears are meshed with the second gears adjacent to them.

[0022] Beneficial Effect: The meshing structure of the first and second gears ensures that the relative motion between the third and second fingerboards remains on a predetermined trajectory during the bending of the fingerboards. Regardless of the angle at which the third and second fingerboards bend, this ensures stable and continuous motion, preventing jamming, misalignment, or excessive twisting of the fingerboards.

[0023] Furthermore, pressure sensors are fixedly connected to the tops of the first finger plate, the second finger plate and the third finger plate. The controller is used to receive pressure signals sent by the pressure sensors and control the rotation speed of the output shaft of the driving member based on the pressure signals.

[0024] Beneficial Effects: Pressure sensors on the tops of the first, second, and third fingerplates monitor the pressure distribution at the contact points between the finger and the fingerplates in real time. Based on these pressure signals, the controller adjusts the output shaft speed of the driver. For example, if pressure in a certain area is too high, the controller reduces the driver speed, slowing the bending speed between the third and second fingerplates to prevent compression injuries to the patient's fingers. When pressure distribution is even and meets rehabilitation requirements, the current driver speed is maintained.

[0025] Furthermore, a plurality of Velcro strips for restraining the arms are fixedly connected to the top of the horizontal end of the support rod.

[0026] Beneficial Effects: The symmetrically arranged Velcro strips on the top of the horizontal ends of the support rods can stably fix the patient's arm to the support rod. This not only helps to further stabilize the patient's upper limb, but also prevents arm shaking during use of the device, which may affect the fixation and rehabilitation effect of the fingerboard on the fingers.

[0027] Furthermore, a second elastic band for restraining the palm is fixedly connected to the top of the palm rest.

[0028] Beneficial effect: The second elastic band on the top of the palm rest can firmly fix the patient's palm on the palm rest, and cooperate with the first elastic band to fix the fingers, thereby achieving all-round fixation of the hand.

[0029] Furthermore, a plurality of turn sensors are fixedly connected to the inner side wall of the driving box, and the controller is used to receive the turn signal of the winding wheel sent by the turn sensor, and control the output shaft of the driving member to stop rotating based on the turn signal.

[0030] Beneficial Effect: A rotation sensor on the inner wall of the drive box accurately records the number of rotations of the reel. Based on the rotation signal sent by the rotation sensor, the controller accurately determines the degree of bending of the fingerboard. When the number of rotations of the reel reaches a preset value, indicating that the fingerboard has bent to the appropriate angle, the controller immediately stops the output shaft of the driver.

[0031] Furthermore, the support block is made of silicone rubber.

[0032] Beneficial effect: The support block made of rubber material has a large friction force, which can effectively prevent the bracket from sliding on a fixed surface such as a chair armrest.

[0033] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is an axonometric view of the auxiliary fixation device for nerve injury repair according to the present invention.

[0035] Figure 2 This is a bottom view of the palm rest of the auxiliary fixation device for nerve injury repair according to the present invention.

[0036] Figure 3 It is a side view of the guide assembly in the auxiliary fixation device for nerve injury repair of the present invention.

[0037] Figure 4 This is a front cross-sectional view of the winding wheel in the auxiliary fixation device for nerve injury repair of the present invention.

[0038] The figure marks in the drawings of the specification include: 1. palm rest; 2. first finger plate; 3. second finger plate; 4. third finger plate; 5. support rod; 6. bracket; 7. hand-tightening bolt; 8. support block; 9. first elastic band; 10. fixing block; 11. spring; 12. drive box; 13. drive member; 14. rotating shaft; 15. winding wheel; 16. electromagnet; 17. iron core; 18. first gear; 19. second gear; 20. Velcro; 21. second elastic band; 22. draw rope. DETAILED DESCRIPTION

[0039] The following is further described in detail through specific implementation methods:

[0040] Example 1:

[0041] As attached Figures 1-4 As shown: A nerve injury repair auxiliary fixation device includes a palm rest 1; a plurality of first finger plates 2 are integrally formed on the side wall of the palm rest 1, the first finger plates 2 are hingedly connected to a second finger plate 3 at one end away from the palm rest 1, and the second finger plates 3 are hingedly connected to a third finger plate 4 at one end away from the first finger plate 2; an "L"-shaped support rod 5 is fixedly connected to one side wall of the palm rest 1 by screws, and a fixing component for fixing the palm rest 1 is installed on the end of the support rod 5 away from the palm rest 1.

[0042] The first elastic band 9 is fixedly bonded to the top of the first finger plate 2, the second finger plate 3 and the third finger plate 4; the bottom of the third finger plate 4 is integrally formed with a fixing block 10, and the side walls of the fixing block 10 are fixedly connected to the spring 11 by screws, and the spring 11 is fixedly connected to the bottom of the adjacent second finger plate 3 and the first finger plate 2 by screws.

[0043] The bottom of the palm rest 1 is provided with a traction component for driving the second finger plate 3 and the third finger plate 4 to bend; the side walls of the first finger plate 2 are provided with guide components for guiding the second finger plate 3 and the third finger plate 4 to bend.

[0044] The fixing assembly includes a "U"-shaped bracket 6, the top of the bracket 6 and the end of the support rod 5 away from the palm rest 1 are fixedly connected by screws, a threaded hole is opened on the top of the bracket 6, the inner thread of the threaded hole is matched with a hand-tightening bolt 7, and the bottom end of the hand-tightening bolt 7 is fixedly connected to the support block 8 by screws.

[0045] The traction assembly includes a drive box 12, a drive member 13 and a controller. The drive box 12 is fixedly connected to the bottom of the palm rest 1 by screws, and the drive member 13 is fixedly connected to a side wall of the drive box 12 by screws. The controller is used to control the rotation of the output shaft of the drive member 13.

[0046] The output shaft of the driving member 13 passes through the side wall of the adjacent driving box 12 and is coaxially integrally formed with a rotating shaft 14; the side walls of the fixed block 10 are fixedly connected with a pull rope 22 by screws, and the end of the pull rope 22 away from the fixed block 10 passes through the driving box 12 and extends into the driving box 12; a retraction component for pulling the pull rope 22 is rotatably matched on the rotating shaft 14.

[0047] The retraction assembly includes several winding wheels 15, which are all rotatably engaged with the rotating shaft 14, and the winding wheels 15 are fixedly bonded to the end of the pull rope 22 adjacent to them away from the fixed block 10; several electromagnets 16 are circumferentially embedded on the rotating shaft 14 and the rotating engagement of the winding wheels 15, and the controller is used to control the opening and closing of the electromagnets 16.

[0048] The winding wheel 15 is provided with a plurality of chute, and an iron core 17 is slidably fitted in the chute.

[0049] The guide assembly includes a first gear 18 that is rotatably engaged with the side wall of the first finger plate 2 and the third finger plate 4; a second gear 19 is symmetrically rotatably engaged with the side wall of the second finger plate 3, and adjacent second gears 19 are meshed with each other, and the first gear 18 is meshed with the second gear 19 adjacent to it.

[0050] Pressure sensors are fixedly bonded to the tops of the first finger plate 2 , the second finger plate 3 and the third finger plate 4 . The controller is used to receive pressure signals sent by the pressure sensors and control the rotation speed of the output shaft of the driving member 13 based on the pressure signals.

[0051] A plurality of Velcro strips 20 for restraining the arms are fixedly bonded to the top of the horizontal end of the support rod 5 .

[0052] A second elastic band 21 for restraining the palm is fixedly bonded to the top of the palm rest 1 .

[0053] A plurality of turn sensors are fixedly bonded to the inner wall of the driving box 12. The controller is used to receive the turn signal of the winding wheel 15 sent by the turn sensor, and control the output shaft of the driving member 13 to stop rotating based on the turn signal.

[0054] The specific implementation process is as follows:

[0055] When the patient is ready to begin rehabilitation training, they first snap bracket 6 into the chair armrest. By rotating thumb screw 7, it moves downward within the threaded hole at the top of bracket 6, driving support block 8 into close contact with the chair armrest. The patient places their arm on top of the horizontal end of support rod 5 and securely fastens their arm to support rod 5 using Velcro 20, symmetrically located at the top of the horizontal end. The Velcro 20 is designed to easily adjust the tightness of the restraint, ensuring a comfortable and stable arm and preventing arm movement during use that could affect finger fixation and rehabilitation.

[0056] Next, the patient places his palm on the palm rest 1 and fixes his palm on the palm rest 1 via the second elastic band 21 on the top of the palm rest 1 .

[0057] Subsequently, the controller activates the driver 13. In this embodiment, the driver 13 may be a stepper motor. The output shaft of the stepper motor passes through the side wall of the drive box 12 and is coaxially integrally formed with the rotating shaft 14. When the stepper motor is activated, the output shaft drives the rotating shaft 14 to rotate.

[0058] Several winding wheels 15 are rotatably engaged with the rotating shaft 14. Under normal circumstances, the winding wheels 15 are separated from the rotating shaft 14 and do not rotate with the rotating shaft 14. When rehabilitation stretching training is required for one or more fingers, an electromagnet 16 is embedded in the rotating shaft 14 and the rotating wheel 15, and a slot is provided in the winding wheel 15 and an iron core 17 is slidably engaged. The patient controls the electromagnet 16 adjacent to the corresponding finger through a controller to energize the electromagnet 16. When the electromagnet 16 is energized, it can attract the iron core 17 on the adjacent winding wheel 15. At this time, the winding wheel 15 and the rotating shaft 14 are in an electromagnetic meshing state, and the corresponding winding wheel 15 will rotate with the rotating shaft 14.

[0059] Combine Figure 3As shown, as the reel 15 rotates, it winds the corresponding pull cord 22 around itself. The other end of the pull cord 22 is fixed to the fixed block 10 at the bottom of the third fingerboard 4. As a result, the pull cord 22 pulls the fixed block 10, which in turn causes the third fingerboard 4 to bend downward around its hinge with the second fingerboard 3. During this process, the spring 11 fixedly connected to the bottom of the third fingerboard 4 bends downward, deforming and storing elastic potential energy. Simultaneously, the fingers, restrained by the first elastic band 9, bend along with the third and second fingerboards 4 and 3.

[0060] During the bending process, first gears 18 are rotatably engaged on the side walls of the first and third fingerboards 2 and 4, while second gears 19 are symmetrically rotatably engaged on the side wall of the second fingerboard 3. Adjacent second gears 19 mesh with each other, and the first gears 18 also mesh with adjacent second gears 19. This gear meshing structure ensures that the relative motion between the third and second fingerboards 4 and 3 remains on a predetermined trajectory. Regardless of the angle at which the third and second fingerboards 4 and 3 bend, the motion is stable and continuous, preventing jamming, misalignment, or excessive distortion.

[0061] Pressure sensors are bonded to the tops of the first, second, and third fingerboards 2, 3, and 4, respectively. These sensors monitor the pressure distribution at the point of contact between the finger and the fingerboards in real time. These pressure sensors transmit these pressure signals to a controller, which adjusts the speed of the stepper motor's output shaft based on these pressure signals. For example, if pressure in a certain area is too high, the controller reduces the stepper motor speed, slowing the bending speed between the third and second fingerboards 4 and 3 to prevent compression injuries to the patient's fingers. When the pressure distribution is even and meets rehabilitation requirements, the current stepper motor speed is maintained.

[0062] At the same time, when the controller controls the corresponding electromagnet 16 to cut off the power, the rotating shaft 14 releases the electromagnetic engagement with the winding wheel 15. At this time, when the spring 11 at the bottom of the second finger plate 3 and the third finger plate 4 recovers its elastic deformation, it can drive the second finger plate 3 and the third finger plate 4 to recover its straight state. At the same time, the fixed block 10 can pull out the pull rope 22 wrapped around the winding wheel 15 and restore it to its initial state, preparing for the next finger stretching. The above process is repeated to achieve rehabilitation training for assisting bending and stretching of one or more fingers.

[0063] By repeatedly bending and stretching the fingers, the nerves can be kept in the best condition, promoting nerve recovery and healing, and repairing radial nerve damage.

[0064] A revolution sensor fixedly bonded to the inner sidewall of the drive box 12 records the number of revolutions of each reel 15 and transmits a revolution signal of the reel 15 to the controller. Based on the revolution signal, the controller accurately determines the degree of bending between the third finger plate 4 and the second finger plate 3. When the number of revolutions of the reel 15 reaches a preset value, meaning that the third finger plate 4 and the second finger plate 3 are bent to the appropriate angle, the controller immediately stops the output shaft of the stepper motor, preventing excessive bending between the third finger plate 4 and the second finger plate 3, thereby protecting the patient's finger.

[0065] During rehabilitation training, the controller can adjust the operating state of the stepper motor based on the patient's recovery and actual needs, such as adjusting the stepper motor's speed and controlling the power on and off of different electromagnets 16, thereby achieving diversified rehabilitation training for different fingers and different degrees of finger bending. For example, as the patient's rehabilitation progresses, the bending angle and range of motion of a second sub-finger plate 3 or a third sub-finger plate 4 can be gradually increased, achieving multi-dimensional functional regulation from simple fixation to functional training.

[0066] Example 2:

[0067] As attached Figure 1 As shown, the difference from embodiment 1 is that the support block 8 is made of silicone rubber.

[0068] The specific implementation process is as follows:

[0069] The support block 8 made of rubber material has a large friction force, which can effectively prevent the bracket 6 from sliding on a fixed surface such as a chair armrest.

[0070] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A nerve injury repair auxiliary fixation device, comprising a palm rest (1), a plurality of first finger plates (2) fixedly connected to the side wall of the palm rest (1), a second finger plate (3) hingedly connected to the end of the first finger plate (2) away from the palm rest (1), and a third finger plate (4) hingedly connected to the end of the second finger plate (3) away from the first finger plate (2), characterized in that: An L-shaped support rod (5) is fixedly connected to one side wall of the palm rest (1), and a fixing component for fixing the palm rest (1) is installed at one end of the support rod (5) away from the palm rest (1); The tops of the first finger plate (2), the second finger plate (3) and the third finger plate (4) are all fixedly connected to a first elastic band (9) for restraining fingers; the bottom of the third finger plate (4) is fixedly connected to a fixing block (10); the side walls of the fixing block (10) are all fixedly connected to a spring (11); the spring (11) is fixedly connected to the bottoms of the second finger plate (3) and the first finger plate (2) adjacent thereto; A traction component for driving the second finger plate (3) and the third finger plate (4) to bend is provided at the bottom of the palm rest (1); The side walls of the first finger plate (2) are each provided with a guide assembly for guiding the bending of the second finger plate (3) and the third finger plate (4).

2. The nerve injury repair auxiliary fixation device according to claim 1, characterized in that: The fixing assembly includes a U-shaped bracket (6), the top of the bracket (6) is fixedly connected to the end of the support rod (5) away from the palm rest (1), the top of the bracket (6) is provided with a threaded hole, the inner thread of the threaded hole is matched with a hand-tightening bolt (7), and the bottom end of the hand-tightening bolt (7) is fixedly connected to a support block (8).

3. The nerve injury repair auxiliary fixation device according to claim 2, characterized in that: The traction assembly comprises a drive box (12), a drive member (13) and a controller, wherein the drive box (12) is fixedly connected to the bottom of the palm rest (1), the drive member (13) is fixedly connected to a side wall of the drive box (12), and the controller is used to control the rotation of the output shaft of the drive member (13); The output shaft of the driving member (13) passes through the side wall of the adjacent driving box (12) and is coaxially fixedly connected to the rotating shaft (14); a pull rope (22) is fixedly connected to the side wall of the fixed block (10), and the end of the pull rope (22) away from the fixed block (10) passes through the driving box (12) and extends into the driving box (12); a retracting component for pulling the pull rope (22) is rotatably matched on the rotating shaft (14).

4. The nerve injury repair auxiliary fixation device according to claim 3, characterized in that: The retraction assembly includes a plurality of winding wheels (15), each of which is in rotational cooperation with a rotating shaft (14), and each of which is fixedly connected to an end of a pull rope (22) adjacent thereto and away from a fixed block (10); a plurality of electromagnets (16) are circumferentially embedded in the rotating shaft (14) and the rotational cooperation position of the winding wheels (15), and a controller is used to control the opening and closing of the electromagnets (16); The winding wheel (15) is provided with a plurality of chutes, and the chutes are slidably matched with iron cores (17).

5. The nerve injury repair auxiliary fixation device according to claim 4, characterized in that: The guide assembly comprises a first gear (18) which is rotatably matched with a side wall of the first finger plate (2) and the third finger plate (4); a second gear (19) is symmetrically rotatably matched with a side wall of the second finger plate (3); adjacent second gears (19) are meshed with each other, and the first gear (18) is meshed with the second gear (19) adjacent thereto.

6. The nerve injury repair auxiliary fixation device according to claim 5, characterized in that: Pressure sensors are fixedly connected to the tops of the first finger plate (2), the second finger plate (3) and the third finger plate (4); the controller is used to receive pressure signals sent by the pressure sensors and control the rotational speed of the output shaft of the driving member (13) based on the pressure signals.

7. The nerve injury repair auxiliary fixation device according to claim 6, characterized in that: The top of the horizontal end of the support rod (5) is fixedly connected with a plurality of Velcro strips (20) for restraining the arms.

8. The nerve injury repair auxiliary fixation device according to claim 7, characterized in that: A second elastic band (21) for restraining the palm is fixedly connected to the top of the palm rest (1).

9. The nerve injury repair auxiliary fixation device according to claim 8, characterized in that: A plurality of turn sensors are fixedly connected to the inner side wall of the driving box (12), and the controller is used to receive the turn signal of the winding wheel (15) sent by the turn sensor, and control the output shaft of the driving member (13) to stop rotating based on the turn signal.

10. The nerve injury repair auxiliary fixation device according to claim 9, characterized in that: The supporting block (8) is made of silicone rubber.

Images