Elastic reduction fixing device adaptive to various types of ankle joint fractures

Abstract

The invention belongs to the technical field of reduction fixing devices, and particularly relates to an elastic reduction fixing device adaptive to various types of ankle joint fractures, the elastic reduction fixing device comprises a vertical plate, a transverse plate and a reduction fixing assembly, the vertical plate and the transverse plate are hinged to each other, and the vertical plate and the transverse plate are respectively provided with a binding belt used for being fixed on the shank and the instep. The reset fixing assembly comprises a damping rod and an adjusting mechanism, the two ends of the damping rod are connected to the vertical plate and the transverse plate respectively, the adjusting mechanism is arranged on the vertical plate and used for conducting synchronous matching adjustment on the hinge tightness of the vertical plate and the transverse plate and the resistance of the damping rod, and a push rod of the damping rod is provided with a resistance spring. The adjusting mechanism adjusts the compression amount of the resistance spring on the push rod and is used for being matched with the hinge tightness adjusting amount of the vertical plate and the transverse plate, the upper end and the lower end of the resistance spring are provided with an upper sliding plate and a lower sliding plate respectively and arranged on the push rod in a sleeving mode, and the adjusting mechanism is connected with the upper sliding plate and used for adjusting the compression amount of the spring. The two states of fixed protection and movable protection can be met at the same time.

Description

Technical Field

[0001] This invention belongs to the technical field of reduction and fixation devices, specifically relating to an elastic reduction and fixation device adapted to various types of ankle fractures. Background Technology

[0002] Ankle fractures are a common orthopedic injury, and the core of their treatment lies in achieving and maintaining anatomical reduction of the fracture ends to create a stable environment for bone healing. Currently, widely used fixation devices in clinical practice can be mainly divided into two categories: external fixation devices and internal fixation devices. Traditional external fixation devices include plaster casts, splints, and removable rigid plastic braces; while internal fixation devices mainly refer to metal objects such as plates and screws implanted surgically. In addition, for severe open or unstable fractures, external fixators spanning the ankle joint are also used for fixation. The common goal of these techniques is to achieve mechanical stability in the early stages of fracture healing using rigid or semi-rigid structures, preventing displacement.

[0003] However, existing fixation devices have significant limitations in concept and function. First, whether it's plaster casts, braces, or internal fixation, their design inherently tends towards complete fixation or absolute stability, strictly restricting the ankle joint to a predetermined position. While this approach is effective for early protection, it neglects the physiological needs for controlled joint movement and weight-bearing stimulation in the later stages of fracture healing. When patients need to begin rehabilitation activities, the external fixation device (such as plaster cast) often must be completely removed or performed without protection, resulting in a time-separation of fixation and activity. Second, this "non-fixation or activity" approach introduces clinical risks: frequent brace removal may cause secondary micromovements or dislocations at the fracture ends due to improper operation or muscle traction, especially when the callus has not yet solidified. Therefore, existing devices primarily serve a static fixation function, generally lacking the intelligent function to provide continuous stable protection while guiding and allowing early, safe, and progressive rehabilitation activities. In other words, the "fixation" and "rehabilitation" stages are disconnected, making it difficult to achieve the "dynamic-static combination" optimized treatment advocated by modern orthopedics.

[0004] Based on this, in order to solve the contradiction between the inability to move when wearing a fixation device and the inability to provide protection when not wearing a fixation device, an elastic reduction and fixation device adapted to multiple types of ankle fractures is proposed. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, the present invention provides an elastic reduction and fixation device suitable for various types of ankle fractures.

[0006] The objective of this invention can be achieved through the following technical solutions: This invention discloses an elastic reduction and fixation device adapted to various types of ankle fractures, comprising a vertical plate, a horizontal plate, and a reduction and fixation assembly. The vertical plate and the horizontal plate are hinged together, and the vertical plate and the horizontal plate are respectively provided with binding straps for fixing to the lower leg and the foot. The reduction and fixation assembly includes a damping rod and an adjustment mechanism. The two ends of the damping rod are respectively connected to the vertical plate and the horizontal plate, and the adjustment mechanism is disposed on the vertical plate. The adjustment mechanism is used to synchronously adjust the tightness of the hinge between the vertical plate and the horizontal plate and the resistance of the damping rod.

[0007] As a further aspect of the present invention, a resistance spring is provided on the push rod of the damping rod, and the adjusting mechanism adjusts the compression of the resistance spring on the push rod to match the adjustment amount of the hinge tightness of the vertical plate and the horizontal plate.

[0008] As a further embodiment of the present invention, the upper end and lower end of the resistance spring are respectively provided with an upper sliding plate and a lower sliding plate, which are sleeved on the push rod. The adjustment mechanism is connected to the upper sliding plate and is used to adjust the compression of the resistance spring.

[0009] As a further embodiment of the present invention, a plurality of telescopic positioning beads are provided on the side of the push rod along the axial direction, and the plurality of telescopic positioning beads are used for the sliding positioning of the upper slide plate and the lower slide plate.

[0010] As a further embodiment of the present invention, the adjusting mechanism includes a bevel gear and a lead screw. The lead screw is disposed on the vertical plate, and the bevel gear is rotatably disposed on the vertical plate. One end of the lead screw is provided with bevel teeth that mesh with the bevel gear. The upper slide plate is slidably disposed on the lead screw and rises and falls as the bevel gear drives the lead screw to rotate. The bevel gear rotates and synchronously adjusts the degree of meshing with the horizontal plate to adjust the hinge tightness of the vertical plate and the horizontal plate.

[0011] As a further aspect of the present invention, a ring of outward convex grooves is provided on the horizontal plate based on the hinge point with the vertical plate, and a ring of inward convex grooves is provided on the inner side of the bevel gear. The degree of engagement between the ring of inward convex grooves on the bevel gear and the ring of outward convex grooves on the horizontal plate is used to adjust the tightness of the horizontal plate and the vertical plate and the swing range of the horizontal plate.

[0012] As a further aspect of the present invention, the height of the annular external convex pattern on the horizontal plate increases sequentially from the side closer to the bevel gear to the side farther away from the bevel gear. The center of the bevel gear is threadedly connected to the vertical plate by a fixing bolt. The distance between the annular internal convex pattern and the annular external convex pattern is dynamically adjusted by the bevel gear as it rotates to control the swing range of the horizontal plate.

[0013] As a further embodiment of the present invention, a rotating handle is concentrically fixed on the bevel gear.

[0014] As a further embodiment of the present invention, a locking mechanism is provided on the rotating handle, which is used to control the rotation and fixation of the bevel gear on the vertical plate.

[0015] As a further embodiment of the present invention, the locking mechanism includes a button, a slide rod, and a return spring. The vertical plate is located below the locking mechanism and has several fixing holes arranged around the center of the bevel gear. The two ends of the return spring are respectively connected to the rotating handle and the slide rod. The return spring pushes the slide rod to extend out of the inner side of the bevel gear and abut against the positioning hole. The button is slidably disposed on the rotating handle, and its front end is inclined. The button extends and slides, and pushes the slide rod to abut against or separate from the positioning hole through the inclined surface.

[0016] The beneficial effects of this invention are as follows: (1) When the patient with an ankle fracture is dressed, if he is in the early stage of rehabilitation, the ankle needs to be fixed. The horizontal and vertical plates are adjusted to be fixed by adjusting the adjustment mechanism. In the middle and late stages of rehabilitation, the tension of the horizontal and vertical plates can be adjusted to a loose state by adjusting the adjustment mechanism, and the damping rod is adjusted accordingly to obtain the damping force to avoid rapid movement of the ankle joint causing further damage to the ankle joint.

[0017] (2) The adjustment mechanism adjusts the relative rotation range of the horizontal and vertical plates by adjusting the tightness of the horizontal and vertical plates. Simultaneously, the adjustment mechanism also adjusts the compression of the resistance spring. When the tightness between the horizontal and vertical plates is relatively loose and the range of motion is large, the adjustment mechanism compresses the resistance spring more, resulting in a greater resistance force on the damping rod. This allows the patient's ankle joint to achieve a larger range of motion and a better training effect under greater damping force. Conversely, when the tightness between the horizontal and vertical plates is relatively tight and the range of motion is small, the adjustment mechanism compresses the resistance spring less, resulting in a smaller resistance force on the damping rod. This reduces the range of motion of the patient's ankle joint and the resistance spring's effect on the damping rod, preventing the patient from using more force when moving their ankle joint and avoiding ankle injury during rehabilitation. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a side view of the present invention; Figure 2 This is a schematic diagram of the side structure of the bevel gear portion of the present invention after it has been concealed; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the side structure of the bevel gear of the present invention; Explanation of reference numerals in the attached diagram: 1. Vertical plate; 2. Horizontal plate; 3. Damping rod; 4. Upper sliding plate; 5. Lower sliding plate; 6. Lead screw; 7. Bevel gear; 8. Rotating handle; 9. Annular convex groove; 10. Telescopic fixing bead; 11. Fixing hole; 12. Button; 13. Slide rod. Detailed Implementation

[0020] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0021] Existing fixation devices have significant limitations in both concept and function. First, whether it's plaster casts, braces, or internal fixation, their design inherently tends towards complete fixation or absolute stability, strictly restricting the ankle joint to a predetermined position. While this approach is effective for early protection, it neglects the physiological needs for controlled joint movement and weight-bearing stimulation in the later stages of fracture healing. When patients need to begin rehabilitation activities, the external fixation device (such as plaster cast) often must be completely removed or performed without protection, resulting in a temporal disconnect between fixation and activity. Second, this "no fixation, no activity" approach introduces clinical risks: frequent brace removal can lead to secondary micromovements or dislocations at the fracture ends due to improper operation or muscle traction, especially before the callus has fully solidified. Therefore, existing devices primarily serve a static fixation function, generally lacking the intelligent functionality to provide continuous stable protection while guiding and allowing for early, safe, and progressive rehabilitation activities.

[0022] Based on this, such as Figures 1-4 As shown, the present invention provides an elastic reduction and fixation device for various types of ankle fractures, comprising a vertical plate 1, a horizontal plate 2, and a reduction and fixation assembly. The vertical plate 1 and the horizontal plate 2 are hinged together. Straps are provided on the vertical plate 1 and the horizontal plate 2 for fixing to the lower leg and foot, respectively. The reduction and fixation assembly includes a damping rod 3 and an adjustment mechanism. The two ends of the damping rod 3 are respectively connected to the vertical plate 1 and the horizontal plate 2. The two ends of the damping rod 3 are hinged to the horizontal plate 2 and the vertical plate 1. The adjustment mechanism is provided on the vertical plate 1 and is used to synchronously adjust the tightness of the hinge between the vertical plate 1 and the horizontal plate 2 and the resistance of the damping rod 3.

[0023] The top of the horizontal plate 2 extends upwards to form a vertical protrusion that hinges to the vertical plate 1. One end of the sleeve of the damping rod 3 is connected to the end of the horizontal plate 2. A horizontal protrusion extends horizontally from the rear side of the vertical plate 1, and the push rod of the damping rod 3 is connected to the horizontal protrusion. The damping rod 3 extends and retracts with the relative rotation of the horizontal plate 2 and the vertical plate 1. The damping rod 3 works by having liquid inside the sleeve, and the push rod dividing the inner cavity of the sleeve into two parts and connecting the two cavities through a small hole. When the push rod extends or retracts rapidly or with a large force, the liquid cannot flow quickly through the small hole to the other cavity, thus creating a damping effect. When the push rod extends or retracts slowly or with a small force, the liquid can flow slowly through the small hole to the other cavity, thus not hindering the relative rotation of the horizontal plate 2 and the vertical plate 1.

[0024] After a patient with an ankle fracture has donned the correct protective gear, if they are in the early stages of rehabilitation, the ankle joint needs to be immobilized. This is achieved by adjusting the horizontal plate 2 and vertical plate 1 to a fixed position using an adjustment mechanism. In the middle and later stages of rehabilitation, the tension of the horizontal plate 2 and vertical plate 1 can be adjusted to a looser position using the adjustment mechanism. The damping rod 3 is then adjusted accordingly to provide damping force, preventing further injury to the ankle joint from rapid movements. Specifically, the adjustment mechanism regulates the resistance of the damping rod 3 through a resistance spring mounted on the push rod of the damping rod 3. The adjustment mechanism adjusts the compression of the resistance spring on the push rod to match the adjustment of the hinge tension of the vertical plate 1 and horizontal plate 2.

[0025] Meanwhile, since different ankle fractures require different ranges of motion during rehabilitation, the adjustment mechanism adjusts the relative rotation range of the horizontal plate 2 and the vertical plate 1 by adjusting the tightness of the horizontal plate 2 and the vertical plate 1 to adjust the appropriate range of motion under different circumstances and avoid excessive activity that could cause further damage to the ankle joint. Furthermore, while adjusting the tightness of the horizontal plate 2 and the vertical plate 1, the adjustment mechanism also simultaneously adjusts the compression of the resistance spring. When the tension between the horizontal plate 2 and the vertical plate 1 is relatively loose and the range of motion is large, the compression of the resistance spring in the adjusting mechanism is large, resulting in a greater resistance force on the damping rod 3. This allows the patient's ankle joint to achieve a larger range of motion and a better exercise effect under the greater damping force. Conversely, when the tension between the horizontal plate 2 and the vertical plate 1 is relatively tight and the range of motion is small, the compression of the resistance spring in the adjusting mechanism is small, resulting in a smaller resistance force on the damping rod 3. This also reduces the range of motion of the patient's ankle joint and the smaller resistance force of the spring on the damping rod 3, thus preventing the patient from using more force when moving their ankle joint and avoiding ankle joint injury during rehabilitation.

[0026] As a further embodiment of the present invention, an upper sliding plate 4 and a lower sliding plate 5 are respectively provided at the upper and lower ends of the resistance spring and are sleeved on the push rod. An adjusting mechanism is connected to the upper sliding plate 4 and is used to adjust the compression of the resistance spring. Several telescopic positioning beads are provided axially on the side of the push rod, and several telescopic fixing beads 10 are used for sliding positioning of the upper sliding plate 4 and the lower sliding plate 5.

[0027] The resistance rod can be adjusted to perform different functions by varying the usage of the resistance spring. The telescopic positioning bead is mounted on the push rod and can elastically extend and retract inside the push rod. When the resistance spring is needed to increase the resistance of the damping rod 3, it abuts against the upper end of the sleeve via the lower slide plate 5. When the resistance spring is not needed, the lower slide plate 5 is slid onto the telescopic positioning bead, which temporarily fixes the position of the lower slide plate 5, preventing it from contacting the top of the sleeve and thus not increasing the resistance of the damping rod 3. Similarly, the adjustment mechanism can adjust the up-and-down movement of the upper slide plate 4. Since there are several telescopic positioning beads arranged from top to bottom, and these beads automatically retract under pressure, the adjustment mechanism pushes the upper slide plate 4 to different heights of the telescopic positioning beads during up-and-down movement to adjust the compression of the resistance spring. When using the resistance spring, the lower slide plate 5 needs to abut against the top of the sleeve of the damping rod 3.

[0028] As a further embodiment of the present invention, the adjusting mechanism includes a bevel gear 7 and a lead screw 6. The lead screw 6 is disposed on the vertical plate 1, and the bevel gear 7 is rotatably disposed on the vertical plate 1. One end of the lead screw 6 is provided with bevel teeth that mesh with the bevel gear 7. The upper slide plate 4 is slidably disposed on the lead screw 6 and rises and falls as the bevel gear 7 drives the lead screw 6 to rotate. The bevel gear 7 rotates and synchronously adjusts the degree of meshing with the horizontal plate 2 to adjust the tightness of the hinge between the vertical plate 1 and the horizontal plate 2.

[0029] The teeth of the bevel gear 7 face outwards. The lead screw 6 is rotatably mounted on the vertical plate 1 and meshes with the bevel gear 7 through the bevel teeth. After the bevel gear 7 rotates, the lead screw 6 will also rotate. Since the upper slide plate 4 is slidably mounted on the lead screw 6, and the upper slide plate 4 is provided with a protrusion that is slidably mounted in the spiral groove of the lead screw 6, when the lead screw 6 rotates under the drive of the bevel gear 7, the upper slide plate 4 can move up and down accordingly, thereby controlling the rise and fall of the resistance spring and realizing the adjustment of the compression of the resistance spring.

[0030] Specifically, when it is necessary to fix the horizontal plate 2 and the vertical plate 1 to each other, the bevel gear 7 is rotated to its tightest position, so that the horizontal plate 2 and the vertical plate 1 cannot rotate relative to each other. When it is necessary to adjust the horizontal plate 2 and the vertical plate 1 to a loose state, the bevel gear 7 is rotated to one side, so that the bevel gear 7 and the horizontal plate 2 are relatively loosened. At the same time, the bevel gear 7 drives the lead screw 6 to rotate, which further drives the upper slide plate 4 to slide down and compress the resistance spring. The resistance spring and the damping rod 3 simultaneously form resistance, allowing the patient to gradually recover during the activity.

[0031] To achieve the adjustment of the tension between the horizontal plate 2 and the vertical plate 1 by rotating the bevel gear 7 in the above embodiments, in one embodiment, a ring of outwardly raised grooves 9 is provided on the horizontal plate 2 based on the hinge point with the vertical plate 1, and a ring of inwardly raised grooves is provided on the inner side of the bevel gear 7. The degree of meshing between the ring of inwardly raised grooves on the bevel gear 7 and the ring of outwardly raised grooves 9 on the horizontal plate 2 is used to adjust the tension between the horizontal plate 2 and the vertical plate 1 and the swing range of the horizontal plate 2. The height of the ring of outwardly raised grooves 9 on the horizontal plate 2 increases sequentially from the side closer to the bevel gear 7 to the side farther away from the bevel gear 7. The center of the bevel gear 7 is threadedly connected to the vertical plate 1 by a fixing bolt. As the bevel gear 7 rotates, the distance between the ring of inwardly raised grooves and the ring of outwardly raised grooves 9 is dynamically adjusted to control the swing range of the horizontal plate 2.

[0032] The bevel gear 7 is threadedly connected to the vertical plate 1 via a fixing bolt. Therefore, when the bevel gear 7 rotates, the distance between the inner surface of the bevel gear 7 and the vertical plate 1 changes, which in turn changes the meshing between the annular inner convex pattern on the inner surface of the bevel gear 7 and the annular outer convex pattern 9 on the horizontal plate 2. Simultaneously, the annular outer convex pattern 9 on the horizontal plate 2 initially has a lower convex height on the side closer to the bevel gear 7, while the annular outer convex pattern 9 on the side farther from the bevel gear 7 initially has a higher convex height, gradually increasing from low to high. Therefore, when the bevel gear 7 rotates to its closest distance to the vertical plate 1, the inner and outer annular convex patterns 9 are fully engaged, preventing the horizontal plate 2 and vertical plate 1 from rotating relative to each other, thus remaining in a fixed state. As the bevel gear 7 rotates, the distance between its inner surface and the vertical plate 1 gradually increases, causing the inner annular convex pattern to separate from the lower portion of the outer annular convex pattern 9. Within this range, the horizontal plate 2 and vertical plate 1 can rotate relative to each other until the inner annular convex pattern comes into contact with the higher portion of the outer annular convex pattern 9. Therefore, the closer the inner surface of the bevel gear 7 is to the vertical plate 1, the smaller the rotation angle between the horizontal plate 2 and vertical plate 1; conversely, the farther the inner surface of the bevel gear 7 is from the vertical plate 1, the larger the rotation angle between the horizontal plate 2 and vertical plate 1.

[0033] In the above embodiments, the rotation angle between the horizontal plate 2 and the vertical plate 1 can be adjusted by controlling the rotation of the bevel gear 7. However, the connection between the bevel gear 7 and the vertical plate 1 is a threaded connection, which cannot form a stable fixation after rotating a certain angle. To avoid this problem, as a further solution of the present invention, a rotating handle 8 is concentrically fixed on the bevel gear 7. A locking mechanism is provided on the rotating handle 8, which is used to control the rotation and fixation of the bevel gear 7 on the vertical plate 1. The locking mechanism includes a button 12, a slide rod 13, and a return spring. The vertical plate 1 is located below the locking mechanism and has several fixing holes 11 arranged around the center of the bevel gear 7. The two ends of the return spring are respectively connected to the rotating handle 8 and the slide rod 13. The return spring pushes the slide rod 13 to extend out of the inner side of the bevel gear 7 and abut against the positioning hole. The button 12 is slidably disposed on the rotating handle 8, and its front end is inclined. The button 12 slides and extends, and pushes the slide rod 13 to abut against or separate from the positioning hole through the inclined surface.

[0034] like Figure 3 As shown, the slide bar 13 includes a large-diameter section and a small-diameter section. The large-diameter section is located inside the rotating handle 8, and the small-diameter section is located inside the bevel gear 7. The inclined surface of the button 12 abuts against the connecting surface of the large-diameter section and the small-diameter section, so that in the initial state, the return spring pushes the slide bar 13 to extend out of the bevel gear 7 and abut against the fixing hole 11 on the vertical plate 1. When the button 12 is pressed, the inclined surface of the button 12 will push the large-diameter section of the slide bar 13 to move towards the return spring and retract, so that the slide bar 13 will separate from the fixing hole 11 on the vertical plate 1, and the rotating handle 8 can be rotated to adjust the rotation angle of the bevel gear 7. When the button 12 is released, the slide bar 13 is pushed back to its original position by the return spring and abuts against the fixing hole 11 on the vertical plate 1, thus locking the position of the bevel gear 7 and preventing the bevel gear 7 from loosening after adjustment.

[0035] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An elastic reduction and fixation device adapted to various types of ankle fractures, characterized in that: The device includes a vertical plate, a horizontal plate, and a reset and fixing assembly. The vertical plate and the horizontal plate are hinged together. Each of the vertical plate and the horizontal plate is provided with a strap for fixing to the lower leg and foot. The reset and fixing assembly includes a damping rod and an adjustment mechanism. The two ends of the damping rod are respectively connected to the vertical plate and the horizontal plate. The adjustment mechanism is disposed on the vertical plate and is used to synchronously adjust the tightness of the hinge between the vertical plate and the horizontal plate and the resistance of the damping rod.

2. The elastic reduction and fixation device for multiple types of ankle fractures according to claim 1, characterized in that: A resistance spring is provided on the push rod of the damping rod, and the adjustment mechanism adjusts the compression of the resistance spring on the push rod to match the adjustment amount of the hinge tightness of the vertical plate and the horizontal plate.

3. The elastic reduction and fixation device for multiple types of ankle fractures according to claim 2, characterized in that: The upper and lower ends of the resistance spring are respectively provided with an upper sliding plate and a lower sliding plate, which are sleeved on the push rod. The adjustment mechanism is connected to the upper sliding plate and is used to adjust the compression of the resistance spring.

4. The elastic reduction and fixation device for multiple types of ankle fractures according to claim 3, characterized in that: The push rod has several telescopic positioning beads arranged axially on its side, and these telescopic positioning beads are used for the sliding positioning of the upper and lower sliding plates.

5. The elastic reduction and fixation device for multiple types of ankle fractures according to claim 3, characterized in that: The adjusting mechanism includes a bevel gear and a lead screw. The lead screw is mounted on the vertical plate, and the bevel gear is rotatably mounted on the vertical plate. One end of the lead screw has bevel teeth that mesh with the bevel gear. The upper slide plate is slidably mounted on the lead screw and rises and falls as the bevel gear drives the lead screw to rotate. The bevel gear rotates and synchronously adjusts the degree of meshing with the horizontal plate to adjust the hinge tightness of the vertical plate and the horizontal plate.

6. The elastic reduction and fixation device for multiple types of ankle fractures according to claim 5, characterized in that: The horizontal plate has an annular outward convex pattern at the hinge point with the vertical plate, and the inner side of the bevel gear has an annular inward convex pattern. The degree of engagement between the annular inward convex pattern on the bevel gear and the annular outward convex pattern on the horizontal plate is used to adjust the tightness of the horizontal and vertical plates and the swing range of the horizontal plate.

7. The elastic reduction and fixation device for multiple types of ankle fractures according to claim 6, characterized in that: The height of the annular outward convex pattern on the horizontal plate increases sequentially from the side closer to the bevel gear to the side farther away from the bevel gear. The center of the bevel gear is threadedly connected to the vertical plate by a fixing bolt. As the bevel gear rotates, the distance between the annular inner convex pattern and the annular outer convex pattern is dynamically adjusted to control the swing range of the horizontal plate.

8. The elastic reduction and fixation device for multiple types of ankle fractures according to claim 7, characterized in that: A rotating handle is concentrically fixed on the bevel gear.

9. The elastic reduction and fixation device for multiple types of ankle fractures according to claim 8, characterized in that: The rotating handle is equipped with a locking mechanism, which is used to control the rotation and fixation of the bevel gear on the vertical plate.

10. The elastic reduction and fixation device for multiple types of ankle fractures according to claim 9, characterized in that: The locking mechanism includes a button, a slide bar, and a return spring. The vertical plate is located below the locking mechanism and has several fixing holes arranged around the center of the bevel gear. The two ends of the return spring are respectively connected to the rotating handle and the slide bar. The return spring pushes the slide bar to extend out of the inner side of the bevel gear and abut against the positioning hole. The button is slidably disposed on the rotating handle and has an inclined front end. The button slides and extends, and pushes the slide bar to abut against or separate from the positioning hole through the inclined surface.

Images