Ankle rehabilitation training device for ankle joint injury patient

Abstract

The invention relates to the technical field of ankle rehabilitation training, and discloses an ankle rehabilitation training device for an ankle joint injury patient, which comprises a base, a bracket is rotatably mounted on the base, a leg fixing frame is fixedly mounted on the bracket, a device groove is formed in the bracket, and a universal ball is arranged in the device groove; a universal ball is fixedly installed on the support, a pedal used for fixing the feet of a patient is fixedly installed on the universal ball, a fixing plate is fixedly installed on the support, a first push rod is fixedly installed on the fixing plate, a sliding block is fixedly installed at the output end of the first push rod, and a second push rod is fixedly installed on the sliding block. One end of the pedal reciprocates up and down, the ankles of the patient can linearly move up and down, a first push rod pushes a sliding block and a second push rod to transversely reciprocate, an annular groove limits a limiting bead, one end of the pedal does circular motion along the annular groove, and the ankles of the patient can annularly rotate; and the rotation angle of the ankle of the patient is increased.

Description

Technical Field

[0001] The invention relates to the technical field of ankle rehabilitation training, in particular to an ankle rehabilitation training device for patients with ankle joint injuries. Background Art

[0002] Ankle rehabilitation training devices are medical devices or instruments used to help restore ankle function, enhance ankle strength and flexibility. These devices are usually designed to provide necessary rehabilitation support and training after ankle injury or surgery. First, the ankle joint is fixed and protected by an ankle brace to reduce the range of motion and avoid further injury. Then, the ankle joint is rehabilitated by imitating the natural movement of the human body, including active and passive movements at different angles and directions. It can effectively improve the range of joint motion, increase muscle strength, relieve muscle tension, increase proprioceptive input, and improve joint coordination, flexibility and movement speed, thereby restoring the movement function of the ankle joint. In actual use, the ankle rehabilitation training device usually needs to fix the patient's calf, and then fix the patient's foot to the pedal, and drive the ankle to move by controlling the movement of the pedal. The existing ankle rehabilitation training device usually only makes one end of the pedal drive the patient's toes to move up and down, so that the patient's ankle rotates in a straight line, or the pedal rotates to both sides, so that the patient's ankle is turned inward and outward. The range of movement of these two types of ankle rehabilitation training is limited, and it is impossible to actually simulate all the movement angles of the patient's ankle in daily life, resulting in poor rehabilitation effect of the existing ankle rehabilitation training device. After rehabilitation training, the patient's ankle may still not be able to move freely in all directions, which brings inconvenience to the patient's daily life. For this reason, we propose an ankle rehabilitation training device for patients with ankle injuries. Summary of the invention

[0003] The purpose of the present invention is to provide an ankle rehabilitation training device for patients with ankle joint injuries to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ankle rehabilitation training device for patients with ankle joint injuries, comprising a base, a bracket rotatably mounted on the base, a leg fixing frame fixedly mounted on the bracket, a device slot arranged in the bracket, a universal ball arranged in the device slot, a pedal for fixing the patient's foot fixedly mounted on the universal ball, a fixing plate fixedly mounted on the bracket, a first push rod fixedly mounted on the fixing plate, a slider fixedly mounted on the output end of the first push rod, the slider slidably mounted on the fixing plate, a second push rod fixedly mounted on the slider, a sliding member rotatably mounted on the output end of the second push rod, a limiting strip matched with the sliding member fixedly mounted on the lower end of the pedal, and an adjusting device for controlling the first push rod and the second push rod fixedly mounted on the fixing plate; The fixing plate is provided with a plurality of annular grooves, the center of each annular groove is the same point and they are arranged according to the radius. The fixing plate is also provided with a straight groove, which is vertically arranged and whose midpoint is the same as the center of the annular groove. The straight groove is connected with each annular groove in turn. A telescopic rod is fixedly installed at one end of the pedal, and a limiting bead matching the annular groove and the straight groove is fixedly installed at one end of the telescopic rod. Two guide blocks for limiting the limiting bead are symmetrically arranged in each annular groove.

[0005] Preferably, a socket is provided on the universal ball, and rods matching the socket are provided on both sides of the universal ball. A ball is fixedly installed at one end of each rod, and each ball is fixedly connected to an inner wall corresponding to the device groove by a torsion spring. Two limit rings for limiting the position of the ball are symmetrically slidably installed in the device groove.

[0006] Preferably, a knob is rotatably mounted on the bracket, a rotating rod is fixedly mounted on one end of the knob, two threaded strips are symmetrically arranged on the rotating rod, two limiting members are fixedly mounted on each of the limiting rings, a threaded groove matching the threaded strip is arranged on the inner wall of each of the limiting members, and two limiting grooves for limiting the limiting members are symmetrically arranged in the bracket.

[0007] Preferably, a sliding rod is slidably installed in the knob, a wedge-shaped piece is fixedly installed at one end of the sliding rod, two plug blocks are symmetrically slidably installed in the knob, a wedge-shaped bar that matches the wedge-shaped piece is fixedly installed at one end of each plug block, a number of elastic rods are fixedly connected between the two wedge bars, and a number of slots for limiting the plug blocks are arranged inside the bracket.

[0008] Preferably, a plurality of elastic strips are fixedly connected between the universal ball and the inner wall of the device groove for resetting the universal ball.

[0009] Preferably, a latch is slidably mounted on the bracket, a spring is fixedly connected between the latch and the bracket, a positioning rod is also fixedly mounted on the latch, and a plurality of positioning holes for limiting the positioning rod are provided on the base.

[0010] Preferably, a plurality of guide bars are fixedly mounted on the latch, a plurality of guide grooves for limiting the guide bars are arranged in the bracket, and the plurality of guide bars correspond one-to-one to the respective corresponding guide grooves.

[0011] Preferably, the depth of each annular groove is greater than the depth of the straight groove.

[0012] Preferably, a plurality of arc-shaped blocks are fixedly mounted on the inner walls on both sides of the sliding member, and sliding grooves for limiting the arc-shaped blocks are arranged on both sides of the limiting strip.

[0013] Preferably, a plurality of Velcro straps for fixing the patient's limbs are fixedly mounted on the leg fixing frame and the pedal, and each of the Velcro straps is made of a flexible and elastic material.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention utilizes the second push rod to reciprocately push the sliding member, so that one end of the pedal can perform up and down reciprocating motion, and the patient's ankle can perform up and down linear motion, and the first push rod pushes the sliding block and the second push rod to perform lateral reciprocating motion, and the annular groove limits the limiting bead, so that one end of the pedal can perform circular motion along the annular groove, and the patient's ankle can perform circular rotation, thereby increasing the rotation angle of the patient's ankle, and the passive movement of the patient's ankle can adjust different movement amplitudes, so that the patient's ankle can gradually increase the movement amplitude, thereby improving the rehabilitation effect of the patient's ankle.

[0015] The present invention utilizes a knob to drive the rotating rod to rotate, so that the limiting rings on both sides drive the ball bearings to move relative to each other. After the insertion rod is inserted into the jack on the universal ball, when the pedal moves, the universal ball bearings drive the ball bearings to rotate, and the torsion spring can provide resistance to the rotation of the universal ball and the pedal, so that the patient's ankle can actively move under the resistance, and according to the rotation angle of the knob, the stretched length of the torsion spring gradually increases, and the resistance provided to the patient during the active movement process is also greater and greater, so that the patient's ankle can obtain a better rehabilitation effect and enhance the strength of the patient's ankle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the latch structure of the present invention; Figure 3 This is a schematic diagram of the structure of the universal ball of the present invention; Figure 4 This is a schematic diagram of the internal structure of the device tank of the present invention; Figure 5 It is a schematic diagram of the structure of the rotating rod and the limiting member of the present invention; Figure 6 This is a schematic diagram of the internal structure of the knob of the present invention; Figure 7 This is a schematic diagram of the fixing plate structure of the present invention; Figure 8 This is a schematic diagram of the pedal structure of the present invention; Fig. 9 This is a schematic diagram of the guide block structure of the present invention; Fig.10 It is a schematic diagram of the straight groove and the annular groove structure of the present invention.

[0017] In the figure: 1-base; 2-bracket; 3-pin; 4-spring; 5-guide strip; 6-guide slot; 7-positioning rod; 8-positioning hole; 9-leg fixing frame; 10-velcro strap; 11-installation slot; 12-universal ball; 13-pedal; 14-elastic strip; 15-jack; 16-insertion rod; 17-ball; 18-torsion spring; 19-limiting ring; 20-limiting piece; 21-threaded groove; 22-limiting groove; 23-knob; 24-rotating rod; 25-threaded strip; 26-sliding rod; 27-wedge-shaped piece; 28-wedge-shaped strip; 29-insertion block; 30-elastic rod; 31-fixing plate; 32-adjusting device; 33-first push rod; 34-sliding block; 35-second push rod; 36-sliding piece; 37-arc block; 38-limiting strip; 39-sliding groove; 40-telescopic rod; 41-limiting bead; 42-straight groove; 43-annular groove; 44-guide block; 45-card groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-10The present invention provides a technical solution: an ankle rehabilitation training device for patients with ankle joint injuries, comprising a base 1, a bracket 2 is rotatably mounted on the base 1, a latch 3 is slidably mounted on the bracket 2, a spring 4 is fixedly connected between the latch 3 and the bracket 2, a positioning rod 7 is also fixedly mounted on the latch 3, a plurality of positioning holes 8 for limiting the positioning rod 7 are arranged on the base 1, a plurality of guide bars 5 are fixedly mounted on the latch 3, a plurality of guide grooves 6 for limiting the guide bars 5 are arranged in the bracket 2, and a plurality of guide bars 5 are respectively connected to the corresponding guide grooves 6 one by one Correspondingly, when the patient uses the device for ankle rehabilitation, the angle of the bracket 2 can be adjusted according to the needs, so that the patient can perform ankle rehabilitation training at different postures and angles. First, the pin 3 is pulled outward from the bracket 2 to stretch the spring 4, and the positioning rod 7 is pulled out from the positioning hole 8 at the same time. Then, the bracket 2 is rotated according to the patient's needs to make the bracket 2 reach a comfortable angle for the patient and make the positioning rod 7 correspond to the corresponding positioning hole 8. Then, the pin 3 is released, and the pin 3 is pulled by the elastic force of the spring 4 to move toward the inside of the bracket 2, and the positioning rod 7 is inserted into the corresponding positioning hole 8. In the process, the latch 3 is re-fixed, and the guide groove 6 limits the guide bar 5, so that the bracket 2 and the latch 3 will maintain the same angle, and the bracket 2 will maintain the angle, thereby improving the comfort of the patient during ankle rehabilitation training. A leg fixing frame 9 is fixedly installed on the bracket 2, and a device groove 11 is arranged in the bracket 2, and a universal ball 12 is arranged in the device groove 11. A plurality of elastic strips 14 for resetting the universal ball 12 are fixedly connected between the universal ball 12 and the inner wall of the device groove 11, and a pedal 13 for fixing the patient's foot is fixedly installed on the universal ball 12. The leg fixing frame 9 and the pedal 13 are both Several Velcro straps 10 for fixing the patient's limbs are fixedly installed, and each Velcro strap 10 is made of a flexible and elastic material. After the angle of the bracket 2 is adjusted, the patient's calf is placed on the leg fixing frame 9, and the patient's foot is placed on the pedal 13, and then the patient's leg and foot are fixed by the Velcro strap 10. After each rehabilitation training is completed, the elastic strip 14 can drive the pedal 13 to reset, so that each time the patient uses the device, the pedal 13 can maintain the same angle with the leg fixing frame 9, which is convenient for the patient to fix the foot.

[0020] A fixing plate 31 is fixedly installed on the bracket 2, a first push rod 33 is fixedly installed on the fixing plate 31, a slider 34 is fixedly installed on the output end of the first push rod 33, the slider 34 is slidably installed on the fixing plate 31, a second push rod 35 is fixedly installed on the slider 34, a sliding member 36 is rotatably installed on the output end of the second push rod 35, a limiting strip 38 matched with the sliding member 36 is fixedly installed on the lower end of the pedal 13, a plurality of arc blocks 37 are fixedly installed on the inner walls on both sides of the sliding member 36, and sliding grooves 39 for limiting the arc blocks 37 are arranged on both sides of the limiting strip 38, an adjusting device 32 for controlling the first push rod 33 and the second push rod 35 is fixedly installed on the fixing plate 31, a plurality of annular grooves 43 are arranged on the fixing plate 31, each The centers of the annular grooves 43 are all at the same point and are arranged according to the radius. A straight groove 42 is also provided on the fixed plate 31. The straight groove 42 is vertically arranged, and its midpoint is the same as the center of the annular groove 43. The straight groove 42 is connected with each annular groove 43 in turn, and the depth of each annular groove 43 is greater than the depth of the straight groove 42. A telescopic rod 40 is fixedly installed at one end of the pedal 13, and a limiting bead 41 that matches the annular groove 43 and the straight groove 42 is fixedly installed at one end of the telescopic rod 40. Two guide blocks 44 for limiting the limiting bead 41 are symmetrically arranged in each annular groove 43. According to the patient's needs, the device can drive the patient's ankle to rotate up and down in a straight line or in a circle. When in use, the adjustment device 32 can be used to adjust the rehabilitation training. The first push rod 33 will be locked to fix the slider 34 on the fixed plate 31, and then the second push rod 35 will push the slider 36 to move back and forth up and down. Through the limitation of the arc block 37 by the slide groove 39 and the limitation of the slider 36 by the limit bar 38, the slider 36 will drive one end of the pedal 13 to move back and forth up and down, and as the angle of the pedal 13 rotates, the slider 36 can change its angle accordingly. At the same time, the limiting bead 41 is pushed by the elastic force of the telescopic rod 40 and will always move back and forth along the straight groove 42. When the limiting bead 41 passes through the connection between the straight groove 42 and the annular groove 43, since the depth of the annular groove 43 is greater than the depth of the straight groove 42, the telescopic rod 40 40 will be extended and retracted without affecting the movement of the limiting bead 41 in the straight groove 42. When one end of the pedal 13 reciprocates up and down, the patient's ankle can be continuously rotated up and down in a straight line, and the up and down movement amplitude of the second push rod 35 can be adjusted according to the patient's rehabilitation condition, so that the patient's ankle rotation angle is continuously increased, thereby improving the effect of rehabilitation training. When performing circular rotation, the amplitude of rehabilitation training is first adjusted according to the actual situation of the patient, so that the second push rod 35 extends upward to a certain extent, so that the limiting bead 41 at the end of the pedal 13 moves along the straight groove 42 to the corresponding annular groove 43, and then the second push rod 35 will be unlocked and can be freely extended and retracted with the movement of the pedal 13, and the first push rod 33 will also be started, according to the diameter of the corresponding annular groove 43,The slider 34 and the second push rod 35 are pushed to slide back and forth laterally on the fixed plate 31. Since the depth of the annular groove 43 is greater than the depth of the straight groove 42, the limiting bead 41 will move along the annular groove 43, and the telescopic rod 40 will not retract to make the limiting bead 41 enter the straight groove 42. The second push rod 35 will also extend and retract accordingly. When the first push rod 33 is extended and retracted, the limiting bead 41 will move to the farthest end of the annular groove 43 and pass through the corresponding inclined surface of the guide block 44, so that the telescopic rod 40 drives the limiting bead 41 to retract. After passing the guide block 44, the limiting bead 41 will be extended and retracted. The elastic force of the retracting rod 40 pops out again into the annular groove 43. When the first push rod 33 retracts, the straight surface of the guide block 44 will prevent the limiting bead 41 from moving in the opposite direction. The limiting bead 41 will move in a circle along the annular groove 43 as the first push rod 33 pushes back and forth, and drives the end of the pedal 13 to rotate in a circle, so that the patient's ankle can rotate in a circle, which improves the rotation angle and amplitude of the patient's ankle and promotes the rehabilitation of the patient's ankle. According to the patient's rehabilitation condition, the limiting bead 41 can also rotate in the annular groove 43 of different diameters, so that the patient can continuously increase the amplitude of the ankle's circular rotation.

[0021] The universal ball 12 is provided with a socket 15, and both sides of the universal ball 12 are provided with a plug rod 16 that matches the socket 15. A ball 17 is fixedly installed at one end of each plug rod 16, and each ball 17 is fixedly connected with a torsion spring 18 between the inner wall corresponding to the device groove 11. Two limit rings 19 for limiting the ball 17 are symmetrically slidably installed in the device groove 11. A knob 23 is rotatably installed on the bracket 2, and a rotating rod 24 is fixedly installed at one end of the knob 23. Two threaded strips 25 are symmetrically arranged on the rotating rod 24. Two limit members 20 are fixedly installed on each limit ring 19, and a threaded groove 21 that matches the threaded strip 25 is arranged on the inner wall of each limit member 20. Two limit grooves 2 for limiting the limit member 20 are symmetrically arranged in the bracket 2. 2. A slide bar 26 is slidably installed in the knob 23, and a wedge-shaped piece 27 is fixedly installed at one end of the slide bar 26. Two plug blocks 29 are symmetrically slidably installed in the knob 23. A wedge-shaped strip 28 matching the wedge-shaped piece 27 is fixedly installed at one end of each plug block 29. A plurality of elastic rods 30 are fixedly connected between the two wedge-shaped strips 28. A plurality of slots 45 for limiting the plug blocks 29 are arranged inside the bracket 2. In addition to enabling the patient's ankle to perform passive movement, the device can also enable the patient's ankle to perform autonomous movement to improve the rehabilitation effect of the patient's ankle. First, the device is adjusted to the autonomous movement mode through the adjustment device 32, so that the first push rod 33 and the second push rod 35 are both unlocked, and can perform corresponding free movement as the patient's foot drives the pedal 13 to move. , and then the slide bar 26 is pressed into the knob 23, and the slide bar 26 drives the wedge 27 to move inside the knob 23. Through the cooperation of the inclined surfaces on both sides of the wedge 27 and the inclined surfaces of the two wedge strips 28, and the limit of the knob 23 on the plug 29, the two wedge strips 28 will drive the plug 29 to move relative to each other and make the plug 29 move into the knob 23. The slot 45 releases the limit on the plug 29, so that the knob 23 can drive the rotating rod 24 to rotate. When the knob 23 is rotated, the rotating rod 24 will drive the threaded strip 25 thereon to rotate synchronously. Through the cooperation of the threaded groove 21 on the limit piece 20 and the threaded strip 25, and the limit of the limit piece 20 by the limit groove 22, the two limit pieces 20 will drive the corresponding limit rings 19 to move relative to each other. The limiting of the ball 17 will drive the two balls 17 and the insertion rod 16 thereon to move relative to each other. Both the insertion rods 16 will be inserted into the socket 15 on the universal ball 12. At the same time, the torsion spring 18 will be stretched along with the movement of the ball 17. When the patient's foot drives the pedal 13 to rotate linearly, the limiting of the insertion rod 16 by the socket 15 will drive the balls 17 on both sides to rotate linearly synchronously. The elastic force of the torsion spring 18 provides resistance to the rotation of the pedal 13. As the torsion spring 18 is stretched, the stress inside the torsion spring 18 gradually increases, and the resistance provided to the pedal 13 is also greater. When the patient's foot drives the pedal 13 to rotate in a circle, since the diameter of the socket 15 is larger than the diameter of the insertion rod 16, the insertion rod 16 has a certain amount of activity space in the socket 15.When the universal ball 12 rotates, it will also drive the balls 17 on both sides to rotate. When the balls 17 rotate, the ends of the torsion spring 18 will also deflect. The elastic force of the torsion spring 18 itself causes the balls 17 to encounter a resistance when rotating. The universal ball 12 will also encounter resistance when rotating, and as the torsion spring 18 is stretched, the resistance provided is also greater. When the patient's foot is performing autonomous movements, the length of the stretched torsion spring 18 can be adjusted according to the rotation amplitude of the knob 23, so that the torsion spring 18 provides different resistances, so that the patient's ankle can perform autonomous movements under different resistance conditions. After the knob 23 is rotated, the slide bar 26 is released, and the elastic force of the elastic rod 30 causes the wedge bar 28 to drive the insert block 29 to move to the outside of the knob 23 to reset, and causes the slide bar 26 to pop out again to reset the knob 23, and the insert block 29 is reinserted into the corresponding slot 45, so that the knob 23 is fixed and will not be reset by the elastic force of the torsion spring 18.

[0022] Specifically, when the patient uses the device for ankle rehabilitation, the angle of the bracket 2 can be adjusted as needed, so that the patient can perform ankle rehabilitation training at different postures and angles. First, the pin 3 is pulled outward from the bracket 2 to stretch the spring 4. At the same time, the positioning rod 7 is pulled out from the positioning hole 8. Then, the bracket 2 is rotated according to the patient's needs to make the bracket 2 reach a comfortable angle for the patient, and the positioning rod 7 is aligned with the corresponding positioning hole 8. Then, the pin 3 is released. The pin 3 is pulled by the elastic force of the spring 4 to move toward the inside of the bracket 2, and the positioning rod 7 is inserted into the corresponding positioning hole 8. The pin 3 is re-fixed, and the guide groove 6 limits the guide bar 5, so that the bracket 2 and the pin 3 will maintain the same angle, and the bracket 2 will maintain this angle. The angle adjustment of the bracket 2 is completed. Afterwards, the patient's calf is placed on the leg fixing frame 9, and the patient's foot is placed on the pedal 13, and then the patient's leg and foot are fixed by the Velcro strap 10. After each rehabilitation training is completed, the elastic strip 14 can drive the pedal 13 to reset, so that each time the patient uses the device, the pedal 13 can maintain the same angle with the leg fixing frame 9, which is convenient for the patient to fix the foot. According to the patient's needs, the device can drive the patient's ankle to rotate up and down linearly or in a circle. When in use, the mode of rehabilitation training and the amplitude of training can be adjusted by the adjustment device 32. When rotating up and down linearly, the first push rod 33 will be locked to fix the slider 34 on the fixing plate 31, and then the second push rod 35 will push the sliding member 36 to The sliding member 36 will drive one end of the pedal 13 to move back and forth up and down through the limit of the arc block 37 by the slide groove 39 and the limit of the sliding member 36 by the limit bar 38. The sliding member 36 will drive one end of the pedal 13 to move back and forth up and down, and as the angle of the pedal 13 rotates, the sliding member 36 can follow its angle change. At the same time, the limiting bead 41 is pushed by the elastic force of the telescopic rod 40 and will always move back and forth along the straight groove 42. When the limiting bead 41 passes through the connection between the straight groove 42 and the annular groove 43, since the depth of the annular groove 43 is greater than the depth of the straight groove 42, the telescopic rod 40 will be extended and retracted, and will not affect the movement of the limiting bead 41 in the straight groove 42. When one end of the pedal 13 reciprocates up and down, the patient's ankle can continuously rotate up and down in a straight line. When rotating in a circle, first according to The patient adjusts the amplitude of rehabilitation training according to the actual situation, so that the second push rod 35 extends upward to a certain extent, so that the limiting bead 41 at the end of the pedal 13 moves along the straight groove 42 to the corresponding annular groove 43, and then the second push rod 35 will be unlocked and can freely extend and retract with the movement of the pedal 13, and the first push rod 33 will also be started, and according to the diameter of the corresponding annular groove 43, the slider 34 and the second push rod 35 will be pushed to slide back and forth laterally on the fixed plate 31. Since the depth of the annular groove 43 is greater than the depth of the straight groove 42, the limiting bead 41 will move along the annular groove 43, and the telescopic rod 40 will not retract to make the limiting bead 41 enter the straight groove 42, and the second push rod 35 will also extend and retract accordingly. When the first push rod 33 finishes extending and retracts,The limiting bead 41 will move to the farthest end of the annular groove 43 and pass through the corresponding inclined surface of the guide block 44, so that the telescopic rod 40 drives the limiting bead 41 to retract. After passing through the guide block 44, the limiting bead 41 will be ejected again into the annular groove 43 by the elastic force of the telescopic rod 40. When the first push rod 33 retracts, the straight surface of the guide block 44 will prevent the limiting bead 41 from moving in the opposite direction. The limiting bead 41 will move in a circle along the annular groove 43 with the reciprocating push of the first push rod 33, and drive the end of the pedal 13 to rotate in a circle, so that the patient's ankle can rotate in a circle. In addition to enabling the patient's ankle to perform passive movement, the device can also enable the patient's ankle to perform autonomous movement. First, the device is adjusted to the autonomous movement mode through the adjustment device 32, so that the first The push rod 33 and the second push rod 35 are both unlocked and can move freely as the patient's foot drives the pedal 13 to move accordingly. Then the slide bar 26 is pressed into the knob 23, and the slide bar 26 drives the wedge 27 to move inside the knob 23. Through the cooperation of the inclined surfaces on both sides of the wedge 27 and the inclined surfaces of the two wedge strips 28, and the limit of the knob 23 on the plug block 29, the two wedge strips 28 will drive the plug block 29 to move relative to each other and move the plug block 29 into the knob 23. The slot 45 releases the limit on the plug block 29, so that the knob 23 can drive the rotating rod 24 to rotate. When the knob 23 is rotated, the rotating rod 24 will drive the threaded strip 25 thereon to rotate synchronously. The cooperation and the limiting groove 22 on the limiting member 20 will make the two limiting members 20 drive the corresponding limiting rings 19 to move relative to each other. The limiting ring 19 will limit the ball 17, which will drive the two balls 17 and the insertion rod 16 thereon to move relative to each other. The two insertion rods 16 will be inserted into the socket 15 on the universal ball 12. At the same time, the torsion spring 18 will be stretched with the movement of the ball 17. When the patient's foot drives the pedal 13 to rotate linearly, the limiting socket 15 on the insertion rod 16 will drive the balls 17 on both sides to rotate linearly synchronously. The elastic force of the torsion spring 18 provides resistance to the rotation of the pedal 13, and as the torsion spring 18 is stretched, the stress inside the torsion spring 18 gradually increases, providing the pedal 13 with When the patient's foot drives the pedal 13 to rotate in a circle, since the diameter of the socket 15 is larger than the diameter of the plug rod 16, the plug rod 16 has a certain space for movement in the socket 15. When the universal ball 12 rotates, it will also drive the balls 17 on both sides to rotate. When the balls 17 rotate, the ends of the torsion spring 18 will also deflect. The elastic force of the torsion spring 18 itself causes the balls 17 to encounter a resistance when rotating. The universal ball 12 will also encounter resistance when rotating. As the torsion spring 18 is stretched, the resistance provided is also greater. When the patient's foot performs autonomous movements, the stretched length of the torsion spring 18 can be adjusted according to the rotation amplitude of the knob 23, so that the torsion spring 18 provides different resistances, so that the patient's ankle can perform autonomous movements under different resistance conditions.

[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An ankle rehabilitation training device for patients with ankle joint injuries, comprising a base (1), characterized in that: The base (1) is rotatably mounted with a bracket (2), the bracket (2) is fixedly mounted with a leg fixing bracket (9), the bracket (2) is provided with a mounting groove (11), the mounting groove (11) is provided with a universal ball (12), a pedal (13) for fixing a patient's foot is fixedly mounted on the universal ball (12), the bracket (2) is fixedly mounted with a fixing plate (31), the fixing plate (31) is fixedly mounted with a first push rod (33), the first push rod (33) A slider (34) is fixedly mounted on the output end, the slider (34) is slidably mounted on the fixed plate (31), a second push rod (35) is fixedly mounted on the slider (34), a sliding member (36) is rotatably mounted on the output end of the second push rod (35), a limit bar (38) matched with the sliding member (36) is fixedly mounted on the lower end of the pedal (13), and an adjusting device (32) for controlling the first push rod (33) and the second push rod (35) is fixedly mounted on the fixed plate (31); The fixing plate (31) is provided with a plurality of annular grooves (43), the center of each annular groove (43) is the same point and the grooves are arranged according to the radius. The fixing plate (31) is also provided with a straight groove (42), the straight groove (42) is arranged vertically, and the midpoint thereof is the same point as the center of the annular groove (43), and the straight groove (42) is connected with each annular groove (43) in sequence. A telescopic rod (40) is fixedly mounted on one end of the pedal (13), and a limiting bead (41) matching the annular groove (43) and the straight groove (42) is fixedly mounted on one end of the telescopic rod (40), and two guide blocks (44) for limiting the limiting bead (41) are symmetrically arranged in each annular groove (43).

2. The ankle rehabilitation training device for ankle joint injury patients according to claim 1, characterized in that: The universal ball (12) is provided with a socket (15), and both sides of the universal ball (12) are provided with plug rods (16) that match the socket (15), and each plug rod (16) is fixedly mounted with a ball (17) at one end, and each ball (17) is fixedly connected with a torsion spring (18) between the inner wall corresponding to the device groove (11), and two limiting rings (19) for limiting the ball (17) are symmetrically slidably mounted in the device groove (11).

3. The ankle rehabilitation training device for ankle joint injury patients according to claim 2, characterized in that: A knob (23) is rotatably mounted on the bracket (2), a rotating rod (24) is fixedly mounted on one end of the knob (23), two threaded strips (25) are symmetrically arranged on the rotating rod (24), two limiting members (20) are fixedly mounted on each limiting ring (19), a threaded groove (21) matching the threaded strip (25) is arranged on the inner wall of each limiting member (20), and two limiting grooves (22) for limiting the limiting members (20) are symmetrically arranged in the bracket (2).

4. The ankle rehabilitation training device for ankle joint injury patients according to claim 3, characterized in that: A slide rod (26) is slidably mounted in the knob (23), a wedge-shaped piece (27) is fixedly mounted at one end of the slide rod (26), two plug blocks (29) are symmetrically slidably mounted in the knob (23), a wedge-shaped strip (28) matching the wedge-shaped piece (27) is fixedly mounted at one end of each plug block (29), a plurality of elastic rods (30) are fixedly connected between the two wedge strips (28), and a plurality of slots (45) for limiting the plug blocks (29) are arranged inside the bracket (2).

5. The ankle rehabilitation training device for ankle joint injury patients according to claim 2, characterized in that: A plurality of elastic strips (14) for resetting the universal ball (12) are fixedly connected to the inner wall of the device groove (11).

6. The ankle rehabilitation training device for ankle joint injury patients according to claim 1, characterized in that: A latch (3) is slidably mounted on the bracket (2), a spring (4) is fixedly connected between the latch (3) and the bracket (2), a positioning rod (7) is also fixedly mounted on the latch (3), and a plurality of positioning holes (8) for limiting the positioning rod (7) are provided on the base (1).

7. The ankle rehabilitation training device for ankle joint injury patients according to claim 6, characterized in that: A plurality of guide bars (5) are fixedly mounted on the latch pin (3), a plurality of guide grooves (6) for limiting the position of the guide bars (5) are arranged in the bracket (2), and the plurality of guide bars (5) correspond one-to-one to the corresponding guide grooves (6).

8. The ankle rehabilitation training device for ankle joint injury patients according to claim 1, characterized in that: The depth of each annular groove (43) is greater than the depth of the straight groove (42).

9. The ankle rehabilitation training device for ankle joint injury patients according to claim 1, characterized in that: A plurality of arc-shaped blocks (37) are fixedly mounted on the inner walls on both sides of the sliding member (36), and sliding grooves (39) for limiting the arc-shaped blocks (37) are arranged on both sides of the limiting strip (38).

10. The ankle rehabilitation training device for ankle joint injury patients according to claim 1, characterized in that: A plurality of Velcro straps (10) for fixing the patient's limbs are fixedly mounted on the leg fixing frame (9) and the pedal (13), and each Velcro strap (10) is made of a flexible and elastic material.

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