Ankle rehabilitation training device

Abstract

This invention relates to a foot and ankle rehabilitation training device, comprising a fixed support; a crank assembly with a pressure adjustment component for adjusting the rotational force; pedals located at both ends of the crank assembly and rotating the crank assembly on the fixed support after being stepped on; a protective sleeve that is retractable and fits over the patient's ankle; and a connecting component that rotates in the same direction as the crank assembly. This invention has a compact and reasonable structure, is easy to operate, and allows the patient's ankle to rotate in a predetermined direction by controlling the rotation direction between the protective sleeve and the pedal, thus achieving ankle movement. It also allows the patient to rotate within a certain range, avoiding excessive movement. Furthermore, the height, tightness, and fit of the protective sleeve are adjusted to better adapt to the patient's injured area, improving targeted rehabilitation training. The rotational force of the crank is also adjusted for easy force control.

Description

Technical Field

[0001] This invention relates to the field of rehabilitation medical equipment technology, and in particular to a foot and ankle rehabilitation training device. Background Technology

[0002] The ankle and foot are prone to sports injuries such as sprains or fractures during exercise. If the injury is severe, it often makes it impossible for the injured person to walk normally and requires a long period of bed rest for rehabilitation.

[0003] In existing technologies, plaster casts or gauze are generally used for fixation treatment of the ankle and ankle area in rehabilitation treatment.

[0004] Studies have shown that after prolonged fixation of the fracture site, it is also necessary to move the patient's ankle to help improve recovery efficiency.

[0005] However, improper handling during ankle recovery can easily cause secondary injuries. The main reason is that the rotation direction between the talus and tibia in the ankle should be consistent with the forward direction to maintain the body's walking posture. If the rotation direction between the talus and tibia is incorrect and does not follow the forward direction, it can easily cause soft tissue damage or even worsen the fracture.

[0006] Furthermore, the range of motion and force of ankle movements must be limited. If the range of motion is too small, the rehabilitation effect will be poor, while if the range of motion is too large, it will not be conducive to rehabilitation. The same applies to force control. Therefore, finding the appropriate range of motion and force control is also an important challenge in the recovery process.

[0007] Therefore, we propose a foot and ankle rehabilitation training device. Summary of the Invention

[0008] In response to the shortcomings of the existing production technology, the applicant provides a foot and ankle rehabilitation training device that can perform rehabilitation training on the ankle from multiple aspects such as force control, range of motion, and direction of rotation, thereby improving the ankle rehabilitation effect.

[0009] The technical solution adopted in this invention is as follows:

[0010] A foot and ankle rehabilitation training device, comprising:

[0011] Fixed bracket, the support frame that it is fixed in place;

[0012] The crank assembly is rotatably connected to the middle of the support frame, and the crank assembly is provided with a pressure regulating component for adjusting the rotational force;

[0013] The pedals are located at both ends of the crank assembly and drive the crank assembly to rotate on the fixed bracket after being pedaled.

[0014] The protective sleeve is retractable and fits around the patient's ankle. The sleeve contains a lifting component that rotates with the contact area, ensuring a tight fit between the sleeve and the ankle surface.

[0015] The connecting component has two retractable sections, upper and lower, which are rotatably connected to the protective cover and the pedal respectively, and the rotation direction is the same as that of the crank assembly.

[0016] Furthermore, a fixed sleeve is welded onto the support frame, and the crank assembly is rotatably connected in the fixed sleeve.

[0017] Furthermore, the crank assembly includes a drive spindle and cranks connected to both ends of the drive spindle. The drive spindle is movably inserted into a fixed sleeve, and the two cranks are arranged in a point-symmetrical manner. The other end of the cranks is connected to a pedal.

[0018] Furthermore, the pressure regulating assembly includes a third round rod, a second pressure block, a dial wheel, a lead screw, a sleeve, and a second elastic telescopic rod; at least two third round rods are slidably inserted into the fixed sleeve; one end of the plurality of third round rods extending into the fixed sleeve is connected to the same second pressure block that is in frictional contact with the drive spindle; a sleeve is rotatably connected to the middle of the fixed sleeve; a lead screw is screwed into the sleeve; a dial wheel is fixedly connected to the upper end of the lead screw; a second elastic telescopic rod is rotatably connected to the lower end of the lead screw; the telescopic end of the second elastic telescopic rod is rotatably connected to the second pressure block, and the lead screw compresses the second elastic telescopic rod, causing the second elastic telescopic rod to press the second pressure block tightly onto the drive spindle, providing resistance to the drive spindle.

[0019] Furthermore, a compression spring is provided between the connecting assembly and the pedal, and the elastic force provided by the compression spring causes the connecting assembly and the pedal to move closer to each other.

[0020] Furthermore, the connecting assembly includes a rotating seat one, an L-shaped connecting rod one, an L-shaped connecting rod two, a pin, and a rotating seat two;

[0021] The rotating seat is fixed to the pedal.

[0022] Rotary seat 1 is rotatably connected to L-shaped connecting rod 1;

[0023] An L-shaped link 1 is slidably connected to an L-shaped link 2; the L-shaped link 2 has multiple first circular holes.

[0024] The L-shaped connecting rod has multiple second circular holes corresponding to the first circular hole;

[0025] A pin is inserted into the second L-shaped link, and the pin is inserted into the corresponding first L-shaped link.

[0026] A rotating seat is rotatably connected to the L-shaped connecting rod 2; one end of the rotating seat 2 is fixedly connected to the protective sleeve, and the other end is rotatably connected to the L-shaped connecting rod 2.

[0027] Furthermore, the connecting assembly also includes a buffer assembly; the buffer assembly is connected to the second L-shaped connecting rod; the buffer assembly includes a first connecting block and a first protrusion; the second L-shaped connecting rod is divided into upper and lower parts, with a first connecting block welded to the lower part of the second L-shaped connecting rod, and the upper part of the second L-shaped connecting rod is slidably connected to the corresponding first connecting block.

[0028] A first protrusion is welded onto the connecting block one; a second sliding groove is provided on the L-shaped connecting rod two corresponding to the position of the first protrusion, and the first protrusion slides in the second sliding groove;

[0029] It also includes a second protrusion; a second protrusion is welded to the upper side of each L-shaped link 2; a first groove is provided on each pin, and the first groove is located outside the corresponding second protrusion. The second protrusion and the first groove cooperate to prevent the pin from falling off the L-shaped link 2.

[0030] Furthermore, the protective sleeve includes a first fabric strip, a first Velcro fastener, and a lifting assembly; each first fabric strip has a first Velcro fastener fixed to it; every two adjacent first Velcro fasteners are bonded to each other;

[0031] The lifting assembly is connected to the first fabric strip. The lifting assembly includes steel wires, a slider, a second connecting block, a pressure rod, and a clamping unit. Two steel wires are fixed to each first fabric strip. The steel wires on the same first fabric strip are slidably connected to a slider. A second connecting block is welded to both sides of each slider. A pressure rod is connected to each second connecting block to support the first fabric strip and prevent the first fabric strip from compressing the patient's skin wound. A clamping unit is connected to the slider to fix the slider.

[0032] Furthermore, the clamping unit includes a first elastic telescopic rod, a lever, a first pressure block, and a rubber pad; each slider is fixedly connected to a first elastic telescopic rod; each telescopic end of the first elastic telescopic rod is fixedly connected to a lever, which is made of plastic; each lever is welded to two first pressure blocks, which are slidably connected to the corresponding slider; each first pressure block is fixedly connected to a rubber pad, which is in contact with the corresponding steel wire.

[0033] The lifting assembly also includes a second round rod; each connecting block 2 is rotatably connected to a second round rod, and the second round rod is fixedly connected to the corresponding pressure rod;

[0034] The lifting assembly also includes rubber strips; four rubber strips are fixed to each first fabric strip.

[0035] Furthermore, the pedal is also connected to:

[0036] The fixation assembly is used to fix the patient's foot to the footrest; the fixation assembly includes an elastic sheet, a second fabric strip, and a second Velcro fastener; two elastic sheets are bolted to each footrest; two second fabric strips are bolted to each footrest, and the second fabric strips are located outside the corresponding elastic sheets, and a second Velcro fastener is fixed to each second fabric strip; each pair of adjacent second Velcro fasteners are bonded to each other;

[0037] Auxiliary components; auxiliary components are connected to the pedals; the auxiliary components include U-shaped blocks and a base plate; two U-shaped blocks are welded to each pedal, and a base plate is welded to each pedal, with several grooves formed on the base plate.

[0038] The beneficial effects of this invention are as follows:

[0039] This invention features a compact and reasonable structure, and is easy to operate. By controlling the rotation direction between the protective sleeve and the pedal, the patient's ankle can rotate in a predetermined direction, achieving the effect of ankle movement. At the same time, it allows the patient to rotate within a certain range, avoiding excessive movement. The height, tightness, and fit of the protective sleeve have been adjusted to better adapt to the patient's injured area, improving targeted rehabilitation training. The rotational force of the crank has also been adjusted for easy force control.

[0040] In addition, the present invention also has the following advantages:

[0041] (1). The patient applies a stepping force to the base plate, which drives the pedal to rotate on the crank and drive the crank to make circular motion. The crank drives the drive spindle to rotate on the fixed sleeve, and the drive spindle drives another crank to make circular motion. When the patient performs the stepping action, he needs to control the two lower limbs to alternately exert force in order to achieve ankle rehabilitation training. At the same time, the range of motion is controllable to avoid excessive damage.

[0042] (2). In order to improve the protection of the ankle, a compression spring is installed between the connecting component and the pedal. The elastic force provided by the compression spring makes the connecting component and the pedal close to each other. The effect during use is to prevent the angle between the ankle and the foot from being too large, thereby damaging the ankle.

[0043] (3) When medical staff turn the dial, they can adjust the friction between the second pressure block and the drive shaft, thereby adjusting the difficulty of stepping on the pedal to meet the training needs of different patients and control the force of the activity.

[0044] (4) The L-shaped link 2 is divided into upper and lower parts. The L-shaped link 1 drives the lower L-shaped link 2 to move downward through the pin. The lower L-shaped link 2 drives the connecting block 1 to move downward. The connecting block 1 drives the first protrusion to slide in the second groove, so that the L-shaped link 2 cannot drive the first cloth belt to move downward. This effectively avoids the problem of secondary damage to the skin wound below the patient's ankle caused by the first cloth belt sliding on the patient's ankle surface during the stepping process.

[0045] (5) By cooperating with L-shaped link one and L-shaped link two, the height of the first cloth strip is adjusted so that the first cloth strip avoids the patient's ankle injury before fixation, which effectively avoids the problem of secondary injury caused by the existing equipment to fix the patient's ankle.

[0046] (6) Because the ankle has a certain slope, the pressure bar cannot fully fit the ankle surface, resulting in low stability. At this time, the connecting block two presses the pressure bar against the ankle surface through the second round rod. After the pressure bar is squeezed, it drives the second round rod to rotate on the connecting block two, so that the pressure bar fits tightly against the ankle surface with the slope, which helps to improve the stability of the fixation operation. When the first cloth strip is fixed on the ankle skin surface, the rubber strip generates friction with the ankle skin, which further improves the stability of the fixation operation. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of the present invention.

[0048] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0049] Figure 3 This is a schematic diagram of the connection structure of the pedal, protective sleeve and connecting assembly of the present invention.

[0050] Figure 4 This is a schematic diagram of the connection structure of the L-shaped connecting rod one, the L-shaped connecting rod two, and the pin of the present invention.

[0051] Figure 5 This is a partial cross-sectional view of the L-shaped connecting rod of the present invention.

[0052] Figure 6 This is a schematic diagram of the protective sleeve structure of the present invention.

[0053] Figure 7 This is a cross-sectional view of the lifting component in the protective sleeve of the present invention.

[0054] Figure 8 This is a partial cross-sectional schematic diagram of the pressure regulating component in this invention.

[0055] The components include: 1. Support frame; 2. Fixing sleeve; 3. Drive spindle; 4. Crank; 5. Pedal; 6. Rotating seat one; 7. L-shaped connecting rod one; 8. L-shaped connecting rod two; 9. Pin; 10. Rotating seat two; 11. First fabric tape; 12. First Velcro; 201. Connecting block one; 202. First protrusion; 203. Second protrusion; 204. Elastic sheet; 205. Second fabric tape; 206. Second Velcro; 207. U-shaped block; 208. Base plate; 209. Steel wire; 2010. Slider. ; 2011, Connecting Block Two; 2012, Pressure Rod; 2013, First Elastic Telescopic Rod; 2014, Pulley; 2015, First Pressure Block; 2016, Rubber Pad; 2017, Second Round Rod; 2018, Rubber Strip; 301, Third Round Rod; 302, Second Pressure Block; 303, Pulley; 304, Lead Screw; 305, Sleeve; 306, Second Elastic Telescopic Rod; 601, Compression Spring; 91, First Round Hole; 92, Second Round Hole; 93, First Slide Groove; 94, Second Slide Groove. Detailed Implementation

[0056] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0057] like Figures 1-5 As shown, this embodiment discloses a foot and ankle rehabilitation training device, including a fixed bracket, a crank assembly, a pedal 5, a protective sleeve, and a connecting assembly. By controlling the rotation direction between the protective sleeve and the pedal 5, the patient's ankle can rotate in a predetermined direction, achieving the effect of ankle movement. At the same time, it allows the patient to rotate within a certain range, avoiding excessive range of motion. The height, tightness, and fit of the protective sleeve are adjusted to better adapt to the patient's injured area and improve targeted rehabilitation training. The rotational force of the crank 4 is also adjusted to facilitate force control.

[0058] like Figures 1-2 As shown in this embodiment, the fixed bracket holds the support frame 1 and is used in conjunction with the seat;

[0059] The crank assembly is rotatably connected to the middle of the support frame 1, and the crank assembly is provided with a pressure regulating component for adjusting the rotational force.

[0060] Pedal 5 is located at both ends of the crank assembly and drives the crank assembly to rotate on the fixed bracket after being pedaled;

[0061] The protective sleeve is retractable and fits around the patient's ankle. The sleeve contains a lifting component that rotates with the contact area, ensuring a tight fit between the sleeve and the ankle surface.

[0062] The connecting component has two retractable sections, upper and lower, which are rotatably connected to the protective sleeve and pedal 5 respectively, and the rotation direction is the same as the rotation direction of the crank assembly.

[0063] The specific structure is as follows:

[0064] A fixed sleeve 2 is welded onto the support frame 1, and the crank assembly is rotatably connected in the fixed sleeve 2.

[0065] The crank assembly includes a drive spindle 3 and cranks 4 connected to both ends of the drive spindle 3. The drive spindle 3 is movably inserted into the fixed sleeve 2. The two cranks 4 are arranged in a point-symmetrical manner, and their other ends are connected to the pedals 5.

[0066] Specific examples include Figure 1 and Figure 2 As shown, a fixed sleeve 2 is welded onto the support frame 1, and a drive spindle 3 is rotatably inserted into the fixed sleeve 2; a crank 4 is fixedly connected to both ends of the drive spindle 3 by bolts, and a pedal 5 is rotatably connected to each crank 4;

[0067] The end of pedal 5 (with the toes as the front end and the heel as the rear end) is connected to a protective sleeve via a connecting component. The connecting component, pedal 5, and protective sleeve are all rotatably connected, and the rotation direction is the same as the rotation direction of crank 4. This ensures that the rotation direction between the patient's ankle and foot is consistent with the actual walking state, which is beneficial for ankle rehabilitation.

[0068] In this embodiment, as Figure 3 As shown, in order to improve the protection of the ankle, a compression spring 601 is provided between the connecting component and the pedal 5. The elastic force provided by the compression spring 601 makes the connecting component and the pedal 5 close to each other. The effect during use is to prevent the angle between the ankle and the foot from being too large, thereby damaging the ankle.

[0069] The connecting assembly includes a rotating seat 6, an L-shaped connecting rod 7, an L-shaped connecting rod 8, a pin 9, and a rotating seat 10.

[0070] Rotary seat 6 is fixed on pedal 5;

[0071] Rotary seat 6 is rotatably connected to L-shaped connecting rod 7;

[0072] An L-shaped link 2 8 is slidably connected to the L-shaped link 7; the L-shaped link 2 8 has multiple first circular holes 91 on the same straight line;

[0073] The L-shaped connecting rod 7 has multiple second round holes 92 corresponding to the first round hole 91; a pin 9 is inserted into the L-shaped connecting rod 8, and the pin 9 is inserted into the corresponding L-shaped connecting rod 7; a rotating seat 10 is rotatably connected to the L-shaped connecting rod 8; one end of the rotating seat 10 is fixedly connected to the protective sleeve, and the other end is rotatably connected to the L-shaped connecting rod 8; the height of the protective sleeve can be adjusted by the cooperation of the L-shaped connecting rod 7 and the L-shaped connecting rod 8.

[0074] In this embodiment, as Figure 5 As shown, the connecting assembly also includes a buffer assembly; the buffer assembly is connected to the L-shaped connecting rod 8.

[0075] The buffer assembly includes a connecting block 201 and a first protrusion 202; the L-shaped connecting rod 28 is divided into upper and lower parts, with a connecting block 201 welded to the lower L-shaped connecting rod 28, and the upper L-shaped connecting rod 28 slidably connected to the corresponding connecting block 201. During the patient's stepping on the pedal 5, the two parts of the L-shaped connecting rod 28 move separately under the action of the connecting block 201, avoiding many problems caused by the L-shaped connecting rod 28 causing the first cloth belt 11 to slide on the patient's ankle; the first protrusion 202 is welded to the connecting block 201, and the first protrusion 202 is made of alloy material; the L-shaped connecting rod 28 has a second sliding groove 94 at the position corresponding to the first protrusion 202, and the first protrusion 202 slides in the second sliding groove 94.

[0076] It also includes a second protrusion 203; a second protrusion 203 is welded to the upper side of each L-shaped connecting rod 2 8; a first groove 93 is provided on each pin 9, and the first groove 93 is located outside the corresponding second protrusion 203. The second protrusion 203 and the first groove 93 cooperate to prevent the pin 9 from falling off the L-shaped connecting rod 2 8.

[0077] In this embodiment, as Figure 6 As shown, the protective sleeve includes a first fabric strip 11 and a first Velcro fastener 12; each first fabric strip 11 is fixed with a first Velcro fastener 12; every two adjacent first Velcro fasteners 12 are glued together.

[0078] A fixing component is also connected to the pedal 5, which is used to fix the patient's foot to the pedal 5;

[0079] The fixing component includes an elastic sheet 204, a second fabric strip 205, and a second Velcro strap 206; two elastic sheets 204 are bolted to each footplate 5; two second fabric strips 205 are bolted to each footplate 5, and the second fabric strips 205 are located outside the corresponding elastic sheet 204. The patient's foot is fixed to the footplate 5 by the cooperation of the elastic sheet 204 and the second fabric strip 205; a second Velcro strap 206 is fixed to each second fabric strip 205; and each pair of adjacent second Velcro straps 206 are bonded to each other.

[0080] It also includes auxiliary components; the pedal 5 is connected to the auxiliary components; the auxiliary components include U-shaped blocks 207 and base plates 208; two U-shaped blocks 207 are welded on each pedal 5, and the U-shaped blocks 207 are made of alloy material; a base plate 208 is welded on each pedal 5, and the base plate 208 has several grooves, which can be V-shaped or arc-shaped.

[0081] In use, the patient sits in a chair, and the medical staff peels off the first Velcro 12 and the second Velcro 206 that are stuck together. Then, the patient's foot is inserted under the two elastic tabs 204 and placed on top of the base plate 208. The medical staff pulls the two second fabric straps 205 in opposite directions, which compress the elastic tabs 204, causing them to bend and fit against the upper side of the patient's foot. The two second Velcro 206 then secure the two second fabric straps 205 in their taut state. Together, the patient's foot is fixed to the base plate 208. Then, the medical staff pulls the pin 9 until the second protrusion 203 abuts against the first groove 93 on the pin 9. At this point, the pin 9 is completely disengaged from the L-shaped connecting rod 7. Then, according to the location of the injury on the ankle skin, the medical staff pushes the L-shaped connecting rod 8 upward. The L-shaped connecting rod 8 drives the parts on it to move upward, thereby adjusting the height of the first cloth strip 11 so that the first cloth strip 11 avoids the patient's ankle injury. Then, the pin 9 is inserted into... In the corresponding second circular hole 92, L-shaped connecting rod 1 7 and L-shaped connecting rod 2 8 are fixed together. Then, medical staff wrap two first cloth strips 11 around the outside of the patient's ankle and fix the two taut first cloth strips 11 together with two first Velcro straps 12, thereby fixing the patient's ankle with the two first cloth strips 11. Then, the patient applies a stepping force to the base plate 208. The base plate 208 drives the pedal 5 to move, causing the pedal 5 to rotate on the crank 4 and drive the crank 4 to perform a circular motion. The crank 4 drives the drive spindle 3 to rotate on the fixed sleeve 2. The drive spindle 3 drives another crank 4 to perform a circular motion. When the patient performs the stepping action, he needs to control the two lower limbs to alternately exert force to achieve ankle rehabilitation training. At the same time, the range of motion is controllable to avoid excessive damage. During use, the height position of the first cloth strip 11 is adjusted by the cooperation of L-shaped connecting rod 1 7 and L-shaped connecting rod 2 8 so that the first cloth strip 11 avoids the patient's ankle injury before fixing, effectively avoiding the problem of secondary injury caused by the fixation of the patient's ankle by existing equipment.

[0082] During the patient's pedaling, the foot swings circumferentially relative to the ankle. The foot drives the pedal 5, which in turn drives the rotating seat 6. Simultaneously, the ankle drives the first fabric belt 11, which in turn drives the rotating seat 10. That is, during the pedaling process, the L-shaped connecting rod 7 swings circumferentially relative to the rotating seat 6, and the L-shaped connecting rod 8 swings circumferentially relative to the rotating seat 10. When the pedal 5 drives the rotating seat 6 to swing downwards, it pulls the first fabric belt 11 downwards through the L-shaped connecting rods 7 and 8, causing the first fabric belt 11 to move downwards around the patient's ankle. If the L-shaped link 8 slides downwards and contacts the skin wound below, it can cause secondary damage. Therefore, the L-shaped link 8 is divided into upper and lower parts. The L-shaped link 7 drives the lower L-shaped link 8 downwards through the pin 9. The lower L-shaped link 8 drives the connecting block 201 downwards. The connecting block 201 drives the first protrusion 202 to slide in the second groove 94, so that the L-shaped link 8 cannot drive the first cloth strip 11 downwards. This effectively avoids the problem of the first cloth strip 11 sliding on the patient's ankle surface and causing secondary damage to the skin wound below during the patient's footsteps.

[0083] During the stepping process, the grooves on the base plate 208 can increase the friction between the patient's feet and the foot, preventing the patient from slipping. At the same time, the U-shaped block 207 limits the patient's foot, further preventing slipping and improving training stability.

[0084] Example 2

[0085] Based on Example 1, such as Figures 1-2 and Figures 6-7 As shown, it also includes a lifting assembly; the lifting assembly is connected to the first fabric strip 11; the lifting assembly includes a steel wire strip 209, a slider 2010, a connecting block 2011, a pressure rod 2012, and a clamping unit; two steel wire strips 209 are fixedly connected to each first fabric strip 11; the steel wire strips 209 on the same first fabric strip 11 are slidably connected to a slider 2010; a connecting block 2011 is welded to both sides of each slider 2010; a pressure rod 2012 is connected to each connecting block 2011, and the first fabric strip 11 is supported by the pressure rod 2012 to avoid the first fabric strip 11 compressing the patient's skin wound; a clamping unit is connected to the slider 2010, and the clamping unit is used to fix the slider 2010.

[0086] The clamping unit includes a first elastic telescopic rod 2013, a lever 2014, a first pressure block 2015, and a rubber pad 2016. Each slider 2010 is fixedly connected to a first elastic telescopic rod 2013. Each telescopic end of the first elastic telescopic rod 2013 is fixedly connected to a lever 2014, which is made of plastic. Each lever 2014 is welded to two first pressure blocks 2015, which are slidably connected to the corresponding slider 2010. Each first pressure block 2015 is fixedly connected to a rubber pad 2016, which is in contact with the corresponding steel wire 209.

[0087] The lifting assembly also includes a second round rod 2017; each connecting block 2011 is rotatably connected to a second round rod 2017, and the second round rod 2017 is fixedly connected to the corresponding pressure rod 2012.

[0088] The lifting assembly also includes rubber strips 2018; four rubber strips 2018 are fixed to each first fabric strip 11.

[0089] If the patient has a relatively large number of skin wounds on their ankle, and after the height of the first strap 11 is adjusted, there are still small wound points on the surface of the patient's ankle within a circumference at this height, then the medical staff pulls the lever 2014. The lever 2014 stretches the first elastic telescopic rod 2013, which in turn moves the first pressure block 2015. The first pressure block 2015 moves the rubber pad 2016, causing the rubber pad 2016 to stop contacting the steel wire 209. Then, the slider 2010 and its parts slide on the steel wire 209, aligning the gap between the two pressure rods 2012 with the small wound points. Then, the medical staff stops pulling the lever 2014, and the first elastic telescopic rod 2013 passes through... The elastic pull of the lever 2014 causes the first pressure block 2015 and the rubber pad 2016 to move, pressing the rubber pad 2016 firmly onto the steel wire 209. This fixes the slider 2010 and its parts onto the steel wire 209. Then, the medical staff pulls the two first cloth strips 11 taut and wraps them around the patient's ankle. At this time, the first cloth strips 11 press the two pressure rods 2012 firmly onto the ankle skin. The two pressure rods 2012 are located on both sides of the small wound point. That is, the two pressure rods 2012 push the first cloth strips 11 away from the small wound point, so that the first cloth strips 11 provide sufficient fixing force without contacting the small wound point, further protecting the patient's ankle injury.

[0090] Because the ankle has a certain slope, the pressure rod 2012 cannot fully fit the ankle surface, resulting in low stability. At this time, the connecting block 2011 presses the pressure rod 2012 tightly against the ankle surface through the second round rod 2017. After the pressure rod 2012 is squeezed, it drives the second round rod 2017 to rotate on the connecting block 2011, so that the pressure rod 2012 fits tightly against the angled ankle surface, which helps to improve the stability of the fixation operation. When the first cloth strip 11 is fixed to the ankle skin surface, the rubber strip 2018 generates friction with the ankle skin, further improving the stability of the fixation operation.

[0091] Example 3

[0092] Based on Example 2, such as Figure 1-2 and Figure 8 As shown, it also includes a pressure regulating assembly; the pressure regulating assembly is connected to the fixed sleeve 2; the pressure regulating assembly includes a third round rod 301, a second pressure block 302, a dial 303, a lead screw 304, a sleeve 305, and a second elastic telescopic rod 306; at least two third round rods 301 are slidably inserted into the fixed sleeve 2, and the third round rods 301 are made of alloy material; one end of all the third round rods 301 extending into the fixed sleeve 2 is connected to the same second pressure block 302 that is in frictional contact with the drive spindle 3; the lower side of the second pressure block 302 is a friction... The surface is rubbed; the second pressure block 302 is in contact with the drive spindle 3; a sleeve 305 is rotatably connected to the middle of the fixed sleeve 2; a lead screw 304 is screwed into the sleeve 305; a dial wheel 303 is fixed to the upper end of the lead screw 304; a second elastic telescopic rod 306 is rotatably connected to the lower end of the lead screw 304; the telescopic end of the second elastic telescopic rod 306 is rotatably connected to the second pressure block 302, and the lead screw 304 compresses the second elastic telescopic rod 306, so that the second elastic telescopic rod 306 presses the second pressure block 302 tightly onto the drive spindle 3, providing resistance to the drive spindle 3.

[0093] Before training, medical staff rotate the dial 303, which drives the lead screw 304 to rotate. Since the lead screw 304 and the sleeve 305 are screwed together, the lead screw 304 moves upward or downward while rotating. When the lead screw 304 moves upward, the second elastic telescopic rod 306, which was originally in a compressed state, partially rebounds. When the lead screw 304 moves downward, it further compresses the second elastic telescopic rod 306, thus adjusting the degree of compression of the second elastic telescopic rod 306. The elastic force generated by the compression of the second elastic telescopic rod 306 is applied to the second pressure block 302, which applies the elastic force to the drive spindle 3 in the form of pressure. That is, when medical staff rotate the dial 303, they can adjust the friction between the second pressure block 302 and the drive spindle 3, thereby adjusting the difficulty of stepping on the pedal 5 to meet the training needs of different patients and control the force of the activity.

[0094] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A foot and ankle rehabilitation training device, characterized in that, include: Fixed bracket, which fixes the support frame (1); The crank assembly is rotatably connected to the middle of the support frame (1), and the crank assembly is provided with a pressure regulating component for adjusting the rotational force; The pedal (5) is located at both ends of the crank assembly and drives the crank assembly to rotate on the fixed bracket after being pedaled; The protective sleeve is retractable and fits around the patient's ankle. The sleeve contains a lifting component that rotates with the contact area, ensuring a tight fit between the sleeve and the ankle surface. The protective sleeve includes a first fabric strip (11), a first Velcro (12), and a lifting assembly; a first Velcro (12) is fixedly attached to each first fabric strip (11); each pair of adjacent first Velcros (12) are glued together; The lifting assembly is connected to the first fabric strip (11). The lifting assembly includes a steel wire strip (209), a slider (2010), a connecting block two (2011), a pressure rod (2012), and a clamping unit. Two steel wire strips (209) are fixedly connected to each first fabric strip (11). The steel wire strips (209) on the same first fabric strip (11) are slidably connected to a slider (2010). A connecting block two (2011) is welded to both sides of each slider (2010). A pressure rod (2012) is connected to each connecting block two (2011). The pressure rod (2012) supports the first fabric strip (11) to prevent the first fabric strip (11) from compressing the patient's skin wound. A clamping unit is connected to the slider (2010) to fix the slider (2010). The connecting component has two retractable sections, upper and lower, which are rotatably connected to the protective sleeve and the pedal (5) respectively, and the rotation direction is the same as the rotation direction of the crank assembly.

2. The foot and ankle rehabilitation training device as described in claim 1, characterized in that: A fixed sleeve (2) is welded onto the support frame (1), and the crank assembly is rotatably connected in the fixed sleeve (2).

3. The foot and ankle rehabilitation training device as described in claim 1, characterized in that: The crank assembly includes a drive spindle (3) and cranks (4) connected to both ends of the drive spindle (3). The drive spindle (3) is movably inserted into the fixed sleeve (2). The two cranks (4) are arranged in a point-symmetric manner, and their other ends are connected to the pedal (5).

4. The foot and ankle rehabilitation training device as described in claim 3, characterized in that: The pressure regulating assembly includes a third round rod (301), a second pressure block (302), a dial (303), a lead screw (304), a sleeve (305), and a second elastic telescopic rod (306); at least two third round rods (301) are slidably inserted into the fixed sleeve (2); one end of the plurality of third round rods (301) extending into the fixed sleeve (2) is connected to the same second pressure block (302) that is in frictional contact with the drive spindle (3); the sleeve (305) is rotatably connected to the middle of the fixed sleeve (2); A lead screw (304) is screwed into the cylinder (305); a dial wheel (303) is fixed to the upper end of the lead screw (304); a second elastic telescopic rod (306) is rotatably connected to the lower end of the lead screw (304); the telescopic end of the second elastic telescopic rod (306) is rotatably connected to the second pressure block (302), and the lead screw (304) compresses the second elastic telescopic rod (306), so that the second elastic telescopic rod (306) presses the second pressure block (302) onto the drive spindle (3), providing resistance to the drive spindle (3).

5. The foot and ankle rehabilitation training device as described in claim 1, characterized in that: A compression spring (601) is provided between the connecting assembly and the pedal (5). The elastic force provided by the compression spring (601) causes the connecting assembly and the pedal (5) to move closer to each other.

6. The foot and ankle rehabilitation training device as described in claim 1, characterized in that: The connecting assembly includes a rotating seat (6), an L-shaped connecting rod (7), an L-shaped connecting rod (8), a pin (9), and a rotating seat (10). Rotating seat 1 (6) is fixed on pedal (5); Rotary seat 1 (6) is rotatably connected to L-shaped connecting rod 1 (7); An L-shaped link 2 (8) is slidably connected to the L-shaped link 1 (7); the L-shaped link 2 (8) has multiple first circular holes (91); The L-shaped connecting rod (7) has multiple second round holes (92) corresponding to the first round hole (91); A pin (9) is inserted into the second L-shaped link (8), and the pin (9) is inserted into the corresponding first L-shaped link (7); A rotating seat 2 (10) is rotatably connected to the L-shaped connecting rod 2 (8); one end of the rotating seat 2 (10) is fixedly connected to the protective sleeve, and the other end is rotatably connected to the L-shaped connecting rod 2 (8).

7. The foot and ankle rehabilitation training device as described in claim 6, characterized in that: The connecting assembly also includes a buffer assembly; the buffer assembly is connected to the second L-shaped link (8); the buffer assembly includes a first connecting block (201) and a first protrusion (202); the second L-shaped link (8) is divided into upper and lower parts, and a first connecting block (201) is welded on the lower L-shaped link (8), and the upper L-shaped link (8) is slidably connected to the corresponding first connecting block (201); A first protrusion (202) is welded onto the connecting block 1 (201); a second groove (94) is provided on the L-shaped connecting rod 2 (8) corresponding to the position of the first protrusion (202), and the first protrusion (202) slides in the second groove (94); It also includes a second protrusion (203); a second protrusion (203) is welded to the upper side of each L-shaped link (8); a first groove (93) is opened on each pin (9), and the first groove (93) is located outside the corresponding second protrusion (203). The second protrusion (203) and the first groove (93) cooperate to prevent the pin (9) from falling off the L-shaped link (8).

8. The foot and ankle rehabilitation training device as described in claim 1, characterized in that: The clamping unit includes a first elastic telescopic rod (2013), a lever (2014), a first pressure block (2015), and a rubber pad (2016); a first elastic telescopic rod (2013) is fixedly connected to each slider (2010); a lever (2014) is fixedly connected to the telescopic end of each first elastic telescopic rod (2013), and the lever (2014) is made of plastic; two first pressure blocks (2015) are welded to each lever (2014), and the first pressure blocks (2015) are slidably connected to the corresponding slider (2010); a rubber pad (2016) is fixedly connected to each first pressure block (2015), and the rubber pad (2016) is in contact with the corresponding steel wire (209); The lifting assembly also includes a second round rod (2017); each connecting block 2 (2011) is rotatably connected to a second round rod (2017), and the second round rod (2017) is fixedly connected to the corresponding pressure rod (2012); The lifting assembly also includes rubber strips (2018); four rubber strips (2018) are fixed to each first fabric strip (11).

9. The foot and ankle rehabilitation training device as described in claim 1, characterized in that: The pedal (5) is also connected to: A fixation assembly is used to fix the patient's foot to the footrest (5); the fixation assembly includes an elastic sheet (204), a second fabric strip (205), and a second Velcro strap (206); two elastic sheets (204) are bolted to each footrest (5); two second fabric strips (205) are bolted to each footrest (5), and the second fabric strips (205) are located outside the corresponding elastic sheet (204), and a second Velcro strap (206) is fixed to each second fabric strip (205); each pair of adjacent second Velcro straps (206) are bonded to each other; Auxiliary components; auxiliary components are connected to the pedal (5); the auxiliary components include U-shaped blocks (207) and base plates (208); two U-shaped blocks (207) are welded to each pedal (5), and a base plate (208) is welded to each pedal (5), with several grooves on the base plate (208).

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