Positioning and fixing device for treating ankle trauma
Through innovative design of the support plate and foot support components, the problems of insufficient angle adjustment and individual adaptability in the fixation of the foot and ankle of existing devices have been solved, achieving precise biomechanical control and comfortable fixation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 徐州仁慈医院
- Filing Date
- 2026-05-27
- Publication Date
- 2026-07-14
AI Technical Summary
Existing foot and ankle fixation devices are difficult to achieve stepless adjustment and reliable locking of the foot and ankle joint angle, and cannot adapt to individual differences, resulting in insufficient fixation support range or size mismatch.
The design incorporates a support plate and foot support components, including a pivot, adjustment components, fastening components, and actuation components. Precise angle control is achieved by driving a threaded rod through a bevel gear transmission. Combined with the nested sliding design of the slide plate and extension plate and the Velcro fastening components, it can adapt to the foot length and angle requirements of different patients.
It achieves stepless, fine adjustment and reliable locking of the ankle joint angle, adapts to individual differences among patients, provides stable support, improves comfort and ease of operation, prevents displacement during treatment, and simplifies the donning and cleaning process.
Smart Images
Figure CN122376330A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of positioning and fixation devices, specifically a positioning and fixation device for treating foot and ankle injuries. Background Technology
[0002] Precise and stable positioning is crucial in the clinical treatment and postoperative rehabilitation of foot and ankle injuries. As a key weight-bearing and movement hub, the foot and ankle have complex anatomy, containing numerous bones, tendons, and ligaments. Incorrect positioning or movement after fractures, ligament tears, or postoperative repair can directly lead to serious complications such as nonunion, malunion, traumatic arthritis, and tendon re-rupture. The core purpose of using specialized positioning and immobilization devices is to provide a controlled, continuous, and biomechanically compliant environment for the injured site. Precise immobilization effectively restricts unnecessary joint movement, reduces pain and swelling, and creates stable physiological conditions for bone healing and soft tissue repair. Simultaneously, good immobilization is fundamental for early and safe rehabilitation training, helping to maintain joint range of motion, prevent muscle atrophy and joint stiffness, and ultimately promote functional recovery. Therefore, a well-designed immobilization device is an important tool for improving the treatment effect and patient prognosis of foot and ankle injuries.
[0003] However, traditional foot and ankle immobilization methods, such as using ordinary plaster casts, adjustable angle braces, or universal splints, have many limitations in practical applications. These methods often fail to achieve precise, stepless adjustment and reliable locking of foot and ankle joint angles, especially dorsiflexion and plantar flexion angles, resulting in an inability to provide accurate positional control for different treatment stages (such as specific angle fixation after fracture reduction). Secondly, traditional devices have limited or no length adjustment capabilities, failing to adapt well to individual differences from children to adults, and from short to long feet, which may lead to insufficient fixation support range or device size mismatch. Therefore, we propose a positioning and immobilization device for foot and ankle trauma treatment. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a positioning and fixation device for the treatment of foot and ankle injuries, which can realize stepless adjustment and reliable locking of the angle of the foot and ankle joint, and can be adjusted according to the length of the patient's foot to adapt to individual differences, thus effectively solving the problems in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a positioning and fixation device for treating foot and ankle injuries, comprising a support plate and a foot support assembly; Support plate: A groove is provided on the lower side, and rotating holes are provided at both the front and rear ends of the groove. A rotating shaft is rotatably connected inside the two rotating holes. An adjustment component is installed inside the support plate. Fastening components are installed on both the front and rear sides of the adjustment component. Connecting components are installed at both the front and rear ends of the rotating shaft. Fastening components are connected to connecting components. A toggle component is installed on the left side of the support plate. The toggle component is connected to the adjustment component. Foot support assembly: includes a connecting plate, a sliding plate, an extension plate, sliders, and slots. The connecting plate has a mounting hole on its left side, and the rotating shaft is fixed inside the mounting hole. The connecting plate has a sliding groove on its right side, through which the sliding plate is slidably connected. The extension plate is fixed to the right side of the sliding plate. Sliders are fixed to the left ends of both the front and rear sides of the sliding plate. The connecting plate has evenly distributed slots on both its front and rear sides. Fixing components are installed on the sides of the sliders. Evenly distributed fastening components are installed on the front and rear sides of the extension plate and the support plate. The support plate mainly supports and connects the lower leg area, and its internal structure enables angle adjustment and fixation. The foot support component is used to support and fix the foot, and its telescopic structure adapts to different foot lengths of patients, forming an adjustable overall frame for fixing the treatment position of the foot and ankle. The connecting plate is hinged to the support plate through a pivot, allowing the entire foot support part to rotate around the pivot to adjust the angle. The sliding mechanism consisting of the slide plate and the extension plate can extend and retract along the groove of the connecting plate, thereby adjusting the length of the entire foot support surface to accommodate different distances from the ankle joint to the toes of different patients. The slider, the slot, and the fixing component work together to lock it after the length is adjusted. The fastening components on the extension plate and the support plate are used to bind and fix the patient's lower leg and foot to the device.
[0006] Furthermore, the adjusting assembly includes a sliding opening, a sliding bar, a threaded rod, and a conical gear ring. The support plate has a sliding opening inside, and a sliding bar is slidably connected inside the sliding opening. A threaded hole is opened on the upper side of the sliding bar, and a threaded rod is threadedly connected inside the threaded hole. The threaded rod is rotatably connected inside the sliding opening, and a conical gear ring is fixed to the upper end of the surface of the threaded rod. The height of the fastening assembly two can be adjusted by setting the adjusting assembly.
[0007] Furthermore, the fastening assembly includes a connecting rod, an arc-shaped block, and an arc-shaped anti-slip plate. The front and rear ends of the lower side of the slide bar are both fixed with connecting rods. The lower end of the connecting rod is fixed with an arc-shaped block, and the lower side of the arc-shaped block is fixed with an arc-shaped anti-slip plate. The fastening assembly is used to fix the connecting assembly.
[0008] Furthermore, the connecting assembly includes a connecting plate and an anti-slip ring. The connecting plates are fixed at both ends of the rotating shaft, and the anti-slip ring is fixed on the circumferential surface of the connecting plate. The arc-shaped anti-slip piece fits into the anti-slip ring and is connected to the rotating shaft by the connecting assembly.
[0009] Furthermore, the actuating assembly includes a bevel gear, a turntable, a rubber ring, and an actuating ring. A connection port is provided on the left side of the support plate, and a bevel gear is rotatably connected inside the connection port. The bevel gear meshes with a bevel gear ring. A turntable is fixed to the left end of the bevel gear, and an annular groove is provided at the right end of the turntable. A rubber ring is fixed inside the annular groove and fits against the left side of the support plate. An actuating ring is fixed on the circumference of the turntable. The actuating assembly drives the bevel gear ring to rotate.
[0010] Furthermore, the fixing component includes a connecting seat, a locking rod, a connecting cover, and a spring. The connecting seat is fixed to the side of the slider, and a guide hole is provided on the lower side of the connecting seat. The locking rod is slidably connected inside the guide hole and is engaged in the corresponding slot. A spring is sleeved on the circumferential surface of the locking rod. One end of the spring is fixed inside the connecting cover, and the other end of the spring is fixed to the side of the connecting seat. By setting the fixing component, the locking rod can be continuously pushed into the slot on the side of the connecting plate by the elastic force of the spring during use, thereby fixing the current position of the sliding plate and the extension plate. When the length needs to be adjusted, medical staff only need to overcome the spring force to pull the locking rod outward, so that it is disengaged from the current slot, and the extension part can slide freely. After adjusting to the appropriate length, the locking rod is released, and the spring will automatically press it into the new slot to complete the locking. The operation is convenient and reliable.
[0011] Furthermore, the second fastening component includes a first connecting strip, Velcro tabs, a second connecting strip, and a Velcro liner. The front sides of both the support plate and the extension plate are fixed with evenly distributed first connecting strips, and Velcro tabs are fixed to the sides of the first connecting strips. The rear sides of both the support plate and the extension plate are fixed with evenly distributed second connecting strips, and Velcro liners are fixed to the sides of the second connecting strips. The Velcro liner and the Velcro tabs cooperate to form a strap system for binding and fixing the patient's limbs to the device. This system is distributed on the front and rear sides of the support plate and the extension plate. By attaching the Velcro tabs to the Velcro liner, a strap can be formed around the limb. This design allows for quick and stepless adjustment of tightness according to the patient's limb thickness and can firmly fix the lower leg and foot to the support surface of the device, preventing displacement during treatment. The Velcro design also facilitates disassembly and cleaning.
[0012] Furthermore, rubber pads and two corresponding rubber bands are provided on the sides of the support plate, connecting plate, and extension plate. The rubber pads are located between the two rubber bands. The left ends of the rubber pads and the two corresponding rubber bands are fixed to the right side of the support plate, and the right ends of the rubber pads and the two corresponding rubber bands are fixed to the upper side of the connecting plate and extension plate. The rubber pads and rubber bands constitute the main buffer and limiting interface between the device and the patient's skin. The rubber pads directly contact the patient's ankle and lower leg, providing soft support, increasing comfort, and reducing the risk of pressure sores that may occur from prolonged fixation. The two rubber bands are located on both sides of the rubber pads, which can play a certain role in wrapping and limiting the limbs when fixing them. Together with the fastening strips above, they make the fixation more stable and comfortable, and prevent the limb from sliding laterally.
[0013] Furthermore, a support groove is provided on the upper side of the extension plate, and a sponge board is fixed inside the support groove to improve the comfort of the extension plate.
[0014] Furthermore, an anti-slip block is fixed to the lower side of the connecting plate, and the lower side of the anti-slip block has evenly distributed anti-slip grooves. The stability of the connecting plate is improved by setting the anti-slip block.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This positioning and fixation device for treating foot and ankle injuries has the following advantages: 1. The screw rod is driven by a bevel gear, thereby precisely controlling the vertical displacement of the slider and the arc-shaped anti-slip plate below it. This mechanical structure can achieve uniform pressure and separation of the anti-slip rings at both ends of the rotating shaft, thereby providing stable and reliable friction locking at any angle. This enables stepless and fine adjustment of the dorsiflexion and plantar flexion angles of the ankle joint, and can firmly maintain the set position, meeting the precise biomechanical requirements of joint angles at different treatment stages such as fracture reduction and ligament repair. 2. The foot support component adopts a nested sliding design of a sliding plate and an extension plate, combined with a locking mechanism consisting of a spring-driven lever and a series of slots. This allows medical staff to quickly and incrementally adjust the effective support length of the device and achieve automatic mechanical locking after adjustment. This ensures that the device can accurately adapt to the differences in foot size from children to adults, providing stable and sufficient support for the entire length from ankle to toe, and solving the problems of poor adaptability and insufficient support range of universal size braces. 3. The rubber pads, sponge boards, and side rubber bands on the support surface together form a flexible cushioning system, which effectively disperses pressure, improves comfort, and prevents pressure sores. Combined with the Velcro-style cloth strip fastening component, it enables stepless and rapid adjustment of the limb circumference. While ensuring secure fixation and preventing displacement during treatment, it greatly simplifies the dressing, disassembly, and cleaning process, improving the efficiency of clinical operations and patient tolerance. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the front structure of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle; Figure 3 This is a cross-sectional view of the left side of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of section B in the middle; Figure 5 This is a schematic diagram of the structure at the rotating shaft of the present invention; Figure 6 This is a front sectional view of the present invention; Figure 7 This is a schematic diagram of the fixed component structure of the present invention; Figure 8 This is a schematic diagram of the structure of the sponge board in this invention.
[0017] In the diagram: 1 Support plate, 2 Rotating shaft, 3 Foot support assembly, 31 Connecting plate, 32 Slide plate, 33 Extension plate, 34 Slider, 35 Slot, 4 Adjustment assembly, 41 Slide opening, 42 Slide bar, 43 Threaded rod, 44 Bevel gear ring, 5 Fastening assembly one, 51 Connecting rod, 52 Arc block, 53 Arc anti-slip plate, 6 Connecting assembly, 61 Connecting disc, 62 Anti-slip ring, 7 Actuating assembly, 71 Bevel gear, 72 Turntable, 73 Rubber ring, 74 Actuating ring, 8 Fixing assembly, 81 Connecting seat, 82 Locking rod, 83 Connecting cover, 84 Spring, 9 Fastening assembly two, 91 First connecting strip, 92 Velcro, 93 Second connecting strip, 94 Velcro, 10 Rubber pad, 11 Rubber belt, 12 Sponge board, 13 Anti-slip block. Detailed Implementation
[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0019] Please see Figure 1-8 This embodiment provides a technical solution: a positioning and fixation device for treating foot and ankle injuries, including a support plate 1 and a foot support component 3; Support plate 1: A groove is provided on the lower side, and rotating holes are provided at both the front and rear ends of the groove. A rotating shaft is rotatably connected inside the two rotating holes. An adjusting component 4 is installed inside the support plate 1. Fastening components 5 are installed on both the front and rear sides of the adjusting component 4. Connecting components 6 are installed at both the front and rear ends of the rotating shaft 2. Fastening components 5 are connected to connecting components 6. An actuating component 7 is installed on the left side of the support plate 1. The actuating component 7 is connected to the adjusting component 4. The adjusting component 4 includes a sliding mouth 41, a sliding strip 42, a threaded rod 43, and a tapered... The gear ring 44 and the support plate 1 have a sliding opening 41 inside. A slide bar 42 is slidably connected inside the sliding opening 41. A threaded hole is opened on the upper side of the slide bar 42. A threaded rod 43 is threadedly connected inside the threaded hole. The threaded rod 43 is rotatably connected inside the sliding opening 41. A bevel gear ring 44 is fixed to the upper end of the surface of the threaded rod 43. The fastening assembly 5 includes a connecting rod 51, an arc-shaped block 52, and an arc-shaped anti-slip plate 53. The front and rear ends of the lower side of the slide bar 42 are fixed with connecting rods 51. The lower end of the connecting rod 51 is fixed with an arc-shaped anti-slip plate 53. Block 52, an arc-shaped anti-slip plate 53 is fixed to the lower side of the arc-shaped block 52, the connecting assembly 6 includes a connecting plate 61 and an anti-slip ring 62, the front and rear ends of the rotating shaft 2 are fixed with connecting plates 61, the circumferential surface of the connecting plate 61 is fixed with an anti-slip ring 62, the arc-shaped anti-slip plate 53 fits against the anti-slip ring 62, the actuating assembly 7 includes a bevel gear 71, a turntable 72, a rubber ring 73 and an actuating ring 74, the left side of the support plate 1 has a connecting port, the bevel gear 71 is rotatably connected inside the connecting port, the bevel gear 71 and the bevel gear The ring 44 meshes with the bevel gear 71. The left end of the bevel gear 71 is fixed with a turntable 72. The right end of the turntable 72 is provided with an annular groove. A rubber ring 73 is fixed inside the annular groove. The rubber ring 73 is in contact with the left side of the support plate 1. A toggle ring 74 is fixed on the circumference of the turntable 72. The bevel gear ring 44 is driven to rotate by the toggle component 7. The connecting component 6 is connected to the rotating shaft 2. The connecting component 6 is fixed by the fastening component 5. The height of the fastening component 5 is adjusted by the adjusting component 4. Foot support assembly 3 includes a connecting plate 31, a sliding plate 32, an extension plate 33, a slider 34, and a slot 35. The connecting plate 31 has a mounting hole on its left side, and the rotating shaft 2 is fixed inside the mounting hole. The connecting plate 31 has a sliding groove on its right side, through which the sliding plate 32 is slidably connected. The extension plate 33 is fixed to the right side of the sliding plate 32. Slider 34s are fixed to the left ends of both the front and rear sides of the sliding plate 32. The connecting plate 31 has evenly distributed slots 35 on both the front and rear sides. Fixing components 8 are installed on the sides of the sliders 34. Evenly distributed fastening components 5 are installed on the front and rear sides of the extension plate 33 and the support plate 1. The support plate 1 is mainly used to support and connect the lower leg, and its internal structure enables angle adjustment and fixation. Fixing components 8... The assembly includes a connecting seat 81, a locking rod 82, a connecting cover 83, and a spring 84. The connecting seat 81 is fixed to the side of the slider 34. A guide hole is provided on the lower side of the connecting seat 81, and the locking rod 82 is slidably connected inside the guide hole. The locking rod 82 is engaged inside the corresponding slot 35. A spring 84 is sleeved on the circumferential surface of the locking rod 82. One end of the spring 84 is fixed inside the connecting cover 83, and the other end is fixed to the side of the connecting seat 81. The fastening assembly 2 5 includes a first connecting strip 91, a Velcro 92, a second connecting strip 93, and a Velcro 94. The front sides of both the support plate 1 and the extension plate 33 are fixed with evenly distributed first connecting strips 91. The sides of the first connecting strips 91 are fixed with Velcro 92. The rear side of each plate 33 is fixed with evenly distributed second connecting strips 93. Velcro 94 is fixed to the side of each second connecting strip 93. Velcro 94 and Velcro 92 cooperate with each other. Fastening component 2 5 is a strap system used to bind and fix the patient's limb to the device. It is distributed on the front and rear sides of the support plates 1 and the extension plate 33. By attaching the Velcro 92 to the Velcro 94, a strap can be formed around the limb. This design allows for quick and stepless adjustment of tightness according to the patient's limb thickness and can firmly fix the lower leg and foot to the support surface of the device, preventing displacement during treatment. The Velcro design also facilitates disassembly and cleaning. The fastening component 8 allows for the use of spring 84. The force continuously pushes the locking lever 82 into the slot 35 on the side of the connecting plate 31, thereby fixing the current position of the sliding plate 32 and the extension plate 33. When the length needs to be adjusted, medical staff only need to overcome the spring force to pull the locking lever 82 outward, so that it is disengaged from the current slot 35, and the extension part can slide freely. After adjusting to the appropriate length, the locking lever 82 is released, and the spring 84 will automatically press it into the new slot 35 to complete the locking. The operation is convenient and reliable. The foot support component 3 is used to support and fix the foot, and adapts to different foot lengths through a telescopic structure. Together, they form an adjustable overall frame for fixing the treatment position of the foot and ankle. The connecting plate 31 is hinged to the support plate 1 through the pivot 2, so that the entire foot support part can rotate around the axis to adjust the angle.The sliding mechanism, consisting of the slide plate 32 and the extension plate 33, can extend and retract along the groove of the connecting plate 31, thereby adjusting the length of the entire foot support surface to accommodate different patients' distances from the ankle to the toes. The slider 34, the slot 35, and the fixing component 8 cooperate to lock the length after adjustment. The fastening component 5 on the extension plate 33 and the support plate 1 is used to bind and fix the patient's lower leg and foot to the device.
[0020] The support plate 1, connecting plate 31, and extension plate 33 are equipped with rubber pads 10 and two corresponding rubber bands 11 on their sides. The rubber pads 10 are located between the two rubber bands 11. The left ends of the rubber pads 10 and the two corresponding rubber bands 11 are fixed to the right side of the support plate 1, and the right ends of the rubber pads 10 and the two corresponding rubber bands 11 are fixed to the upper side of the connecting plate 31 and the extension plate 33. The rubber pads 10 and the rubber bands 11 constitute the main buffer and limiting interface between the device and the patient's skin. The rubber pads 10 directly contact the patient's ankle and lower leg, providing soft support, increasing comfort, and reducing the risk of pressure sores that may occur from prolonged fixation. The two rubber bands 11 are located on both sides of the rubber pads 10, which can play a certain role in wrapping and limiting the limbs when fixing them. Together with the fastening strips 9 above, they make the fixation more stable and comfortable, and prevent the limbs from sliding laterally.
[0021] The extension plate 33 has a support groove on its upper side, and a sponge plate 12 is fixed inside the support groove. The comfort of the extension plate 33 is improved by setting the sponge plate 12.
[0022] Among them, the lower side of the connecting plate 31 is fixed with an anti-slip block 13, and the lower side of the anti-slip block 13 is provided with uniformly distributed anti-slip grooves. The stability of the connecting plate 31 is improved by setting the anti-slip block 13.
[0023] The working principle of the positioning and fixation device for treating foot and ankle injuries provided by this invention is as follows: First, the patient's lower leg is placed on the support plate 1, and the foot is placed on the foot support assembly 3, which consists of a connecting plate 31, a sliding plate 32, and an extension plate 33. The limb is then bound and fixed using a fastening assembly 2 5, which consists of a first connecting strip 91, Velcro 92, a second connecting strip 93, and Velcro 94, evenly distributed on the support plate 1 and the extension plate 33. The tightness is infinitely adjustable through the use of Velcro. When it is necessary to adjust the dorsiflexion or plantar flexion angle of the foot, medical staff can move the actuating ring 74 of the actuating assembly 7 located on the left side of the support plate 1, which drives the turntable 72 and the bevel gear 71 to rotate. The bevel gear 71 meshes with the bevel gear ring 44 fixed to the upper end of the threaded rod 43, thereby driving the threaded rod 43 to rotate within the slide 41. The threaded rod 43 engages with the threaded hole on the upper side of the slide bar 42, converting the rotational motion into the linear lifting motion of the slide bar 42 within the slide 41. The front and rear ends of the lower side of the slide bar 42 are connected to the arc-shaped block 52 and the arc-shaped anti-slip plate 53 of the fastening assembly 5 via the connecting rod 51. When the slide bar 42 drives the arc-shaped anti-slip plate 53 to rise, it will release the clamping pressure on the anti-slip ring 62 of the connecting assembly 6. At this time, the connecting plate 61 and the anti-slip ring 62, which are fixedly connected to the rotating shaft 2, can rotate freely, thereby allowing the entire foot, which is hinged to the support plate 1 via the rotating shaft 2, to rotate freely. The support component 3 can rotate around the pivot 2, thereby adjusting the patient's foot to the specific angle required for treatment. After the angle is adjusted, the actuating ring 74 is turned in the opposite direction, causing the slide bar 42 to descend through the aforementioned transmission chain. This causes the arc-shaped anti-slip plate 53 to be tightly pressed against the circumferential surface of the anti-slip ring 62, using friction to firmly lock the connecting plate 61 to the pivot 2, thus fixing the current angle of the foot support component 3. Then, according to the length of the user's foot, the lever 82 installed on the connecting seat 81 on the side of the slider 34 is pulled outward by manually overcoming the elastic force of the spring 84 in the fixing component 8, disengaging it from the slot 35 currently engaged on the side of the connecting plate 31, thereby releasing the lock on the slide plate 32. At this time, The sliding plate 32 and its fixed extension plate 33 on the right side can be freely pulled along the groove on the right side of the connecting plate 31 to adjust the effective length of the entire foot support surface. After adjusting to the appropriate position, the locking rod 82 is released, and the restoring force of the spring 84 will automatically push the locking rod 82 into the new corresponding locking groove 35, realizing the reliable locking of the new position of the sliding plate 32 and the extension plate 33. During the entire fixing process, the rubber pads 10 and rubber strips 11 set on the support plate 1, the connecting plate 31 and the extension plate 33 provide cushioning and lateral restraint for the patient's limbs. The sponge plate 12 above the extension plate 33 further increases the comfort of the sole of the foot, while the anti-slip block 13 on the lower side of the connecting plate 31 enhances the stability of the device when it is placed.
[0024] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A positioning and fixation device for treating foot and ankle injuries, characterized in that: Includes a support plate (1) and a foot support assembly (3); Support plate (1): A groove is provided on the lower side. Rotating holes are provided at both the front and rear ends of the groove. Rotating shafts are rotatably connected inside the two rotating holes. An adjustment component (4) is installed inside the support plate (1). Fastening component 1 (5) is installed on both the front and rear sides of the adjustment component (4). Connecting component (6) is installed at both the front and rear ends of the rotating shaft (2). Fastening component 1 (5) is connected to connecting component (6). A toggle component (7) is installed on the left side of the support plate (1). The toggle component (7) is connected to the adjustment component (4). Foot support assembly (3): includes a connecting plate (31), a sliding plate (32), an extension plate (33), a slider (34), and a slot (35). The left side of the connecting plate (31) has an installation hole, and the rotating shaft (2) is fixed inside the installation hole. The right side of the connecting plate (31) has a sliding groove, and the sliding plate (32) is slidably connected inside the sliding groove. The right side of the sliding plate (32) is fixed with an extension plate (33). The left ends of the front and rear sides of the sliding plate (32) are fixed with sliders (34). The front and rear sides of the connecting plate (31) have evenly distributed slots (35). The sides of the sliders (34) are equipped with fixing components (8). The front and rear sides of the extension plate (33) and the support plate (1) are equipped with evenly distributed fastening components (9).
2. The positioning and fixation device for treating foot and ankle injuries according to claim 1, characterized in that: The adjustment assembly (4) includes a sliding opening (41), a sliding bar (42), a threaded rod (43), and a bevel gear ring (44). The support plate (1) has a sliding opening (41) inside. The sliding bar (42) is slidably connected inside the sliding opening (41). The upper side of the sliding bar (42) has a threaded hole. The threaded rod (43) is threadedly connected inside the threaded hole. The threaded rod (43) is rotatably connected inside the sliding opening (41). The upper end of the surface of the threaded rod (43) is fixed with a bevel gear ring (44).
3. The positioning and fixation device for treating foot and ankle injuries according to claim 2, characterized in that: The fastening assembly 1 (5) includes a connecting rod (51), an arc block (52) and an arc anti-slip plate (53). The connecting rod (51) is fixed at both the front and rear ends of the lower side of the slide bar (42). The arc block (52) is fixed at the lower end of the connecting rod (51), and the arc anti-slip plate (53) is fixed at the lower side of the arc block (52).
4. The positioning and fixation device for treating foot and ankle injuries according to claim 3, characterized in that: The connecting assembly (6) includes a connecting plate (61) and an anti-slip ring (62). The connecting plate (61) is fixed at both the front and rear ends of the rotating shaft (2). An anti-slip ring (62) is fixed on the circumferential surface of the connecting plate (61). The arc-shaped anti-slip piece (53) is in contact with the anti-slip ring (62).
5. The positioning and fixation device for treating foot and ankle injuries according to claim 2, characterized in that: The actuating assembly (7) includes a bevel gear (71), a turntable (72), a rubber ring (73), and an actuating ring (74). A connection port is provided on the left side of the support plate (1). The bevel gear (71) is rotatably connected inside the connection port. The bevel gear (71) meshes with the bevel gear ring (44). The turntable (72) is fixed to the left end of the bevel gear (71). An annular groove is provided at the right end of the turntable (72). The rubber ring (73) is fixed inside the annular groove. The rubber ring (73) is in contact with the left side of the support plate (1). The actuating ring (74) is fixed on the circumferential surface of the turntable (72).
6. The positioning and fixation device for treating foot and ankle injuries according to claim 1, characterized in that: The fixing component (8) includes a connecting seat (81), a locking rod (82), a connecting cover (83), and a spring (84). The connecting seat (81) is fixed to the side of the slider (34). A guide hole is provided on the lower side of the connecting seat (81). The locking rod (82) is slidably connected inside the guide hole. The locking rod (82) is engaged inside the corresponding slot (35). A spring (84) is sleeved on the circumferential surface of the locking rod (82). One end of the spring (84) is fixed inside the connecting cover (83), and the other end of the spring (84) is fixed on the side of the connecting seat (81).
7. The positioning and fixation device for treating foot and ankle injuries according to claim 1, characterized in that: The fastening assembly 2 (9) includes a first connecting strip (91), a Velcro closure (92), a second connecting strip (93), and a Velcro closure (94). The front sides of the support plate (1) and the extension plate (33) are both fixed with evenly distributed first connecting strips (91). The sides of the first connecting strips (91) are fixed with Velcro closures (92). The rear sides of the support plate (1) and the extension plate (33) are both fixed with evenly distributed second connecting strips (93). The sides of the second connecting strips (93) are fixed with Velcro closures (94). The Velcro closures (94) and the Velcro closures (92) cooperate with each other.
8. The positioning and fixation device for treating foot and ankle injuries according to claim 1, characterized in that: The support plate (1), connecting plate (31) and extension plate (33) are provided with rubber pads (10) and two corresponding rubber strips (11) on their sides. The rubber pads (10) are located between the two rubber strips (11). The left ends of the rubber pads (10) and the two corresponding rubber strips (11) are fixed to the right side of the support plate (1), and the right ends of the rubber pads (10) and the two corresponding rubber strips (11) are fixed to the upper side of the connecting plate (31) and extension plate (33).
9. The positioning and fixation device for treating foot and ankle injuries according to claim 1, characterized in that: The upper side of the extension plate (33) is provided with a support groove, and a sponge plate (12) is fixed inside the support groove.
10. A positioning and fixation device for treating foot and ankle injuries according to claim 1, characterized in that: The lower side of the connecting plate (31) is fixed with an anti-slip block (13), and the lower side of the anti-slip block (13) is provided with uniformly distributed anti-slip grooves.