Leg fixing clamp for orthopedic surgery

Abstract

The invention relates to a leg fixing clamp for orthopedic surgery, and belongs to the technical field of medical instruments. Comprising a supporting frame, a supporting assembly and a fixing assembly, a limiting assembly is arranged in the supporting frame and comprises a first ball screw and a limiting frame, and limiting blocks are arranged on the two sides of the limiting frame; the supporting assembly comprises a supporting frame body and a moving assembly, the moving assembly comprises a second ball screw and a moving plate, and a lifting part is arranged on the moving plate; the fixing assembly comprises a first fixing plate, a second fixing plate and a third fixing plate. Adjusting assemblies are arranged on the two sides of the second fixing plate and the two sides of the third fixing plate. According to the leg fixing clamp for the orthopedic surgery, the stability, adjustability and adaptability of the leg fixing clamp for the orthopedic surgery are remarkably improved. The position is accurately adjusted through the limiting assembly, the angle is adjusted through the adjusting assembly, the supporting hardness is controlled through the air bag, the shank supporting length is adjusted through the stretching assembly, and the operation efficiency and the patient comfort are improved.

Description

Technical Field

[0001] The invention relates to a leg fixing clamp for orthopedic surgery, belonging to the technical field of medical devices. Background Art

[0002] Orthopedics is one of the most common departments in major hospitals. It mainly studies the anatomy, physiology and pathology of the musculoskeletal system, and uses drugs, surgery and physical methods to maintain and develop the normal form and function of this system. With the development and progress of science and technology, orthopedics has made great progress in diagnosis and treatment. Orthopedic surgery is a key link for doctors to treat patients, and leg diseases account for a particularly high proportion of orthopedic surgery. When diagnosing and treating patients' legs, it is usually necessary to assist in fixing the patient's limbs. On the one hand, it can prevent the patient's limbs from moving around during the operation, and on the other hand, the limbs can be fixed at a location far away from the operation, freeing up enough space for medical staff to perform the operation, thereby facilitating the operation of medical staff and improving the efficiency of the operation.

[0003] However, existing fixation clamps often use simple clamping or strapping, which have poor stability. The leg fixation position is often relatively fixed, and it is difficult to fine-tune according to the specific situation of the surgeon. It lacks height and angle adjustment functions and is difficult to meet the needs of different surgical angles and leg postures. Summary of the invention

[0004] The present invention provides a leg fixing clamp for orthopedic surgery to solve the problems in the prior art of poor stability, lack of height and angle adjustment functions, and difficulty in fine-tuning according to the specific conditions of the operator.

[0005] The present invention provides a leg fixing fixture for orthopedic surgery, which comprises a support frame, a support assembly, and a fixing assembly. The support assembly is located above the support frame, and a limiting assembly is arranged inside the support frame. The limiting assembly comprises a first ball screw and a limiting frame. The limiting frame is located at both ends of the first ball screw, and limiting blocks are arranged on both sides of the limiting frame. The limiting blocks are slidably connected to the support frame.

[0006] The supporting assembly includes a supporting frame and a moving assembly, the moving assembly includes a second ball screw and a moving plate, the moving plate is provided with a lifting part, and the fixing assembly is connected to the lifting part;

[0007] The fixing assembly comprises a first fixing plate, a second fixing plate and a third fixing plate, and adjustment assemblies are arranged on both sides of the second fixing plate and the third fixing plate.

[0008] Preferably, the threads at both ends of the first ball screw have opposite rotation directions, and the limiting frame is threadedly connected to the first ball screw.

[0009] Preferably, the limit block is fixedly connected to the limit frame, a first slide groove corresponding to the limit block is provided at the bottom of the support frame, the limit block passes through the first slide groove and is slidably connected with the first slide groove, and the limit block is L-shaped;

[0010] Preferably, the moving assembly is located inside the supporting frame, and the second ball screw is located on both sides of the moving plate and is connected to the moving plate through threads.

[0011] Preferably, the second fixing plate and the third fixing plate are respectively located at two ends of the first fixing plate, the first fixing plate is in an outwardly convex semi-arc shape, and the second fixing plate and the third fixing plate are provided with arc-shaped grooves.

[0012] Preferably, the lifting part includes a first lifting assembly and a second lifting assembly, the first lifting assembly includes a first telescopic rod and a second telescopic plate, the first telescopic rod and the second telescopic plate are fixedly connected, and the second lifting assembly is located above the first telescopic plate.

[0013] Preferably, the second lifting assembly includes a second telescopic rod and a second telescopic plate, the second telescopic rod is fixedly connected to the first telescopic plate, the second telescopic rod is fixedly connected to the second telescopic plate, the second telescopic plate is fixedly connected to the first fixed plate, and the second fixed plate and the third fixed plate are hinged between the two ends of the second telescopic plate and the second telescopic plate.

[0014] Preferably, the adjustment component includes an adjustment limit frame and an adjustment disk, the adjustment limit frame is located on both sides of the second fixed plate and the third fixed plate, connecting columns are provided on both sides of the second fixed plate and the third fixed plate, the adjustment limit frame is provided with an arc-shaped slide groove corresponding to the connecting column, the connecting column passes through the arc-shaped slide groove and is slidably connected with the arc-shaped slide groove, the adjustment disk and the connecting column are connected by a connecting arm, and the adjustment disks on both sides are connected by a driving component.

[0015] Preferably, the driving assembly comprises a first gear and a second gear meshing with the first gear, and the adjusting disk is coaxial with the second gear and fixedly connected.

[0016] Preferably, the second fixing plate and the third fixing plate have the same structure, and both the second fixing plate and the third fixing plate include a supporting flexible body and an airbag, and the airbag is located at the bottom of the supporting flexible body and embedded in the supporting flexible body.

[0017] Preferably, the third fixing plate further comprises a stretching assembly and a support block, and the third fixing plate and the support block are connected via the stretching assembly;

[0018] The stretching assembly includes a stretching frame and a limiting bolt. The stretching frame is located inside the third fixed plate and is slidably connected to the third fixed plate, and one end is fixedly connected to the support block. The limiting bolt is located at the bottom of the third fixed plate and is connected to the third fixed plate through a thread. A slider is provided at the bottom of the limiting bolt, and the slider is slidably connected to the stretching frame.

[0019] Beneficial effects of the present invention:

[0020] The invention provides a leg fixing clamp for orthopedic surgery, which realizes the stable fixing of the support frame through a limiting component, ensures the stability of the clamp during the whole operation process, is not only suitable for operating tables of various shapes, but also greatly improves the reliability and flexibility of fixing, and the moving component in the supporting component realizes the precise adjustment of the position of the fixing component. The motor drives the second ball screw to rotate, driving the moving plate to move horizontally along the supporting frame, so that the position of the fixing component can be flexibly adjusted according to the body shape and surgical requirements of the surgeon, thereby improving the accuracy and comfort of the operation, and the adjustment component in the fixing component allows the angles of the second fixing plate and the third fixing plate to be precisely adjusted to adapt to the leg shapes and surgical requirements of different patients, further improving the adaptability and comfort of the fixation, and the airbags are embedded in the second fixing plate and the third fixing plate, and the hardness of the supporting flexible body can be flexibly adjusted through the control of inflation and deflation, so that the hardness of the support can be adjusted in real time according to the surgical requirements and the patient's comfort, so that it is more in line with the patient's leg contour, and the stretching component is arranged inside the third fixing plate, allowing it to be adjusted according to the different calf lengths or comfort requirements of the patient, thereby improving the adjustability and adaptability of the support, and ensuring effective support of the patient's calf during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a schematic structural diagram of a leg fixation clamp for orthopedic surgery.

[0022] Figure 2 This is a schematic structural diagram of another state of a leg fixation clamp for orthopedic surgery of the present invention.

[0023] Figure 3 The present invention is a front view structural schematic diagram of a leg fixing clamp for orthopedic surgery.

[0024] Figure 4 The present invention is a partial cross-sectional structural schematic diagram of a leg fixing clamp for orthopedic surgery.

[0025] Figure 5 The present invention is a schematic diagram of the structure of a moving component of a leg fixation clamp for orthopedic surgery.

[0026] Figure 6The present invention is a schematic diagram of the exploded structure of a moving component of a leg fixation clamp for orthopedic surgery.

[0027] Figure 7 The present invention is a schematic diagram of a front view and cross-sectional structure of a leg fixing clamp for orthopedic surgery.

[0028] Figure 8 The present invention is a schematic diagram of the structure of an adjustment component of a leg fixation clamp for orthopedic surgery.

[0029] Fig. 9 This is a schematic structural diagram of a second fixing plate of a leg fixing clamp for orthopedic surgery according to the present invention.

[0030] Fig.10 This is a schematic diagram of the exploded structure of the second fixing plate of a leg fixing clamp for orthopedic surgery according to the present invention.

[0031] Fig.11 This is a schematic structural diagram of a third fixing plate of a leg fixing clamp for orthopedic surgery according to the present invention.

[0032] Fig.12 The present invention is a schematic diagram of the exploded structure of the third fixing plate of the leg fixing clamp for orthopedic surgery.

[0033] Fig.13 The present invention is a schematic structural diagram of a stretching assembly of a leg fixation clamp for orthopedic surgery.

[0034] In the figure: 1, support frame, 11, limit assembly, 111, first ball screw, 112, limit frame, 113, limit block, 114, first slide, 2, support assembly, 21, support frame, 22, moving assembly, 221, second ball screw, 222, moving plate, 23, lifting part, 231, first lifting assembly, 2311, first telescopic rod, 2312, first telescopic plate, 232, second lifting assembly, 2321, second telescopic rod, 23 22. Second telescopic plate, 3. Fixed assembly, 31. First fixed plate, 32. Second fixed plate, 321. Support flexible body, 322. Airbag, 33. Third fixed plate, 331. Stretching assembly, 3311. Stretching frame, 3312. Limit bolt, 332. Support block, 34. Adjustment assembly, 341. Adjustment limit frame, 342. Adjustment disk, 3421. Connecting arm, 343. Driving assembly, 3431. First gear, 3432. Second gear. DETAILED DESCRIPTION

[0035] Example 1

[0036] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] The present invention provides a leg fixing clamp for orthopedic surgery, which comprises a support frame 1, a support assembly 2, and a fixing assembly 3. A limiting assembly 11 is arranged inside the support frame 1, and the support frame 1 is fixed on the operating table through the limiting assembly 11. The limiting assembly 11 comprises a first ball screw 111 and a limiting frame 112. The limiting frame 112 is located at both ends of the first ball screw 111. The threads at both ends of the first ball screw 111 are rotated in opposite directions. The first ball screw 111 drives the limiting frame 112 to move through a motor. The limiting frame 112 is threadedly connected with the first ball screw 111. Fixed limiting blocks 113 are arranged on both sides of the limiting frame 112. A first sliding groove 114 corresponding to the limiting block 113 is arranged at the bottom of the support frame 1. The limiting block 113 penetrates the first sliding groove 114 and is slidably connected with the first sliding groove 114. The limiting block 113 is L-shaped.

[0038] The support assembly 2 is located above the support frame 1, and the support assembly 2 includes a support frame 21 and a moving assembly 22. The moving assembly 22 is located inside the support frame 21, and the moving assembly 22 includes a second ball screw 221 and a moving plate 222. The second ball screw 221 is located on both sides of the moving plate 222 and is connected to the moving plate 222 by threads. The moving plate 222 moves along the support frame 21 through the second ball screw 221. The moving plate 222 is provided with a lifting part 23, and the fixed assembly 3 is located at the top of the lifting part 23 and is lifted up and down by the lifting part 23.

[0039] The fixing assembly 3 includes a first fixing plate 31, a second fixing plate 32, a third fixing plate 33, and an adjusting assembly 34. The first fixing plate 31 and the second fixing plate 32 are respectively located at two ends of the first fixing plate 31. The first fixing plate 31 is in an outwardly convex semi-arc shape, and the second fixing plate 32 and the third fixing plate 33 are provided with arc-shaped grooves.

[0040] The lifting part 23 includes a first lifting assembly 231 and a second lifting assembly 232. The first lifting assembly 231 includes a first telescopic rod 2311 and a second telescopic plate 2322. The first telescopic rod 2311 is located at the bottom of the second telescopic plate 2322 and drives the second telescopic plate 2322 to move up and down. The second lifting assembly 232 is located above the first telescopic plate 2312. The second lifting assembly 232 includes a second telescopic rod 2321 and a second telescopic plate 2322. The second telescopic rod 2321 is fixedly connected to the first telescopic plate 2312. The second telescopic rod 2321 drives the second telescopic plate 2322 to move up and down. The second telescopic plate 2322 is fixedly connected to the first fixed plate 31. The second fixed plate 32 and the third fixed plate 33 are located at both ends of the second telescopic plate 2322 and are hinged to the second telescopic plate 2322.

[0041] The adjustment component 34 includes an adjustment limit frame 341 and an adjustment disk 342. The adjustment limit frame 341 is symmetrically arranged on both sides of the second fixed plate 32 and the third fixed plate 33. Connecting columns are arranged on both sides of the second fixed plate 32 and the third fixed plate 33. The adjustment limit frame 341 is provided with an arc-shaped slide corresponding to the connecting column. The connecting column penetrates the arc-shaped slide and is slidably connected with the arc-shaped slide. The adjustment disk 342 is concentric with the arc-shaped slide. The adjustment disk 342 is fixedly connected to the connecting column by a connecting arm 3421. The adjusting disks 342 on both sides are connected by a driving component 343.

[0042] The driving assembly 343 includes a first gear 3431 and a second gear 3432 . The first gear 3431 and the second gear 3432 are meshed with each other. The first gear 3431 is driven by a motor. The adjusting disk 342 and the second gear 3432 are coaxial and fixedly connected.

[0043] When in use, the first ball screw 111 drives the limit blocks 113 at both ends to expand toward both ends along the direction of the first slide groove 114, and the support frame 1 is clamped on the operating table. The outer end of the limit block 113 is clamped on the edge of the operating table by the first ball screw 111 for fixation, and the second ball screw 221 is driven by the motor to rotate so that the movable plate 222 can move horizontally along the support frame 21, so as to adjust the position of the fixing component 3 according to the operator's situation. After the position is adjusted, the operator's legs are placed on the fixing component 3, wherein the calves are placed on the third fixing plate 33, the inner side of the knees are placed at 31, and the thighs are placed on the second fixing plate 32. According to the operator's surgical needs, the first lifting component 231 and the second lifting component 232 start to drive the fixing component 3. The fixed component 3 is raised and lowered, and the operator's legs begin to bend and are supported and fixed. During this process, the position of the fixed component 3 can be fine-tuned by rotating the second ball screw 221. In the process of supporting and limiting the fixed component 3, the first gear 3431 is driven by the motor to rotate, and the first gear 3431 drives the second gear 3432 and the adjusting disk 342 to rotate. The adjusting disk 342 drives the second fixed plate 32 or the third fixed plate 33 to flip clockwise or counterclockwise along the arc-shaped slide groove through the connecting arm 3421 and the connecting column, thereby realizing the adjustment of the angles of the second fixed plate 32 and the third fixed plate 33, so that the arc-shaped grooves of the second fixed plate 32 and the third fixed plate 33 can better fit the operator's legs to achieve fixed limitation.

[0044] Compared with the prior art, the support frame 1 is firmly fixed by the limit assembly 11. The two ends of the first ball screw 111 have opposite screw threads. The limit blocks 113 at both ends can be expanded to both sides at the same time by the motor drive, tightly clamping the edge of the operating table, ensuring the stability of the clamp during the entire operation. It is not only suitable for operating tables of various shapes, but also greatly improves the reliability and flexibility of fixation. The position of the fixed assembly 3 is precisely adjusted by the moving assembly 22 in the support assembly 2. The motor drives the second ball screw 221 to rotate, driving the moving plate 222 to move horizontally along the support frame 21, so that the position of the fixed assembly 3 can be flexibly adjusted according to the body shape and surgical needs of the surgeon, improving the accuracy and comfort of the surgery. The height of the fixed assembly 3 is adjusted by the lifting part 23, so that the legs of the surgeon can be supported and fixed at different heights. At the same time, the angles of the second fixed plate 32 and the third fixed plate 33 are precisely adjusted by the adjusting assembly 34. The motor drives the first gear 3431 to rotate, and drives the second gear 3432 and the adjusting disk 342 to rotate through the gear meshing, and then drives the second fixing plate 32 or the third fixing plate 33 to flip along the arc-shaped slide groove through the connecting arm 3421 and the connecting column, so that the fixing plate can better fit the operator's legs, improve the stability and comfort of fixation, reduce the discomfort during fixation, and improve the smooth progress of the operation.

[0045] Example 2

[0046] In the above embodiment, the traditional leg fixation clamp for orthopedic surgery, the fixing plate is usually made of hard material, with fixed hardness, and cannot be flexibly adjusted according to the actual needs of the surgeon. This may cause the surgeon's legs to be supported too hard or too soft during the operation, affecting the comfort and effect of the operation. Therefore, the embodiment of the present application optimizes the second fixing plate 32 and the airbag 322 based on the above embodiment.

[0047] In this embodiment, the second fixing plate 32 and the third fixing plate 33 have the same structure. Both the second fixing plate 32 and the third fixing plate 33 include a supporting flexible body 321 and an airbag 322. There are multiple airbags 322 located at the bottom of the supporting flexible body 321. The multiple airbags 322 are embedded in the supporting flexible body 321 and are linearly distributed.

[0048] When in use, the operator's legs are supported by the supporting soft body 321, and the inflation and deflation of the airbag 322 are controlled. When the operator needs harder support, the supporting soft body 321 is compressed when the airbag 322 is inflated, and its hardness increases. Conversely, when softer support is needed, the air pressure is released, and the hardness of the supporting soft body 321 is reduced, making it fit the operator's legs more closely, thereby improving the stability and comfort of fixation.

[0049] Compared with the prior art, the hardness of the supporting soft body 321 can be flexibly adjusted by controlling the inflation and deflation of the airbag 322. When a harder support is needed, the airbag 322 is inflated to expand and compress the supporting soft body 321, thereby increasing the overall hardness; conversely, when a softer support is needed, the gas in the airbag 322 is released to restore the supporting soft body 321 to a soft state. This design allows the supporting hardness to be adjusted in real time according to the surgical requirements and the comfort of the surgeon, greatly improving the accuracy and comfort of the surgery. The supporting soft body 321 itself has good flexibility and fit, and can better adapt to the shape of the surgeon's leg. At the same time, the inflation and deflation of the airbag 322 can further fine-tune the shape of the supporting soft body 321, making it more fit the contour of the surgeon's leg, improving the stability and comfort of the fixation, and by flexibly adjusting the supporting hardness, it can ensure that the surgeon can get just the right support throughout the entire surgical process, reduce discomfort, and improve the success rate of the surgery and the patient's satisfaction.

[0050] Example 3

[0051] The above embodiment cannot be adjusted according to the different calf lengths or comfort requirements of the operator, so the embodiment of the present application optimizes the third fixing plate 33 to a certain extent based on the above embodiment.

[0052] In this embodiment, the third fixing plate 33 includes a stretching component 331 and a support block 332. The support block 332 is consistent with the outer contour of the third fixing plate 33. The support block 332 and the outer contour of the third fixing plate 33 are connected through the stretching component 331. The stretching component 331 is located inside the third fixing plate 33.

[0053] The stretching assembly 331 includes a stretching frame 3311 and a limiting bolt 3312. The stretching frame 3311 is located inside the third fixed plate 33 and is slidably connected to the third fixed plate 33, and one end is fixedly connected to 332. The limiting bolt 3312 is located at the bottom of the third fixed plate 33 and is connected to the third fixed plate 33 through a thread. A slider is provided at the bottom of the limiting bolt 3312, and the slider is slidably connected to the stretching frame 3311.

[0054] When in use, the length of the third fixing plate 33 can be adjusted according to the operator's condition to better support the operator's calf. Specifically, the slider is driven downward by rotating the limit bolt 3312, and the support block 332 is pulled to stretch the support block 332 to an appropriate length. The slider slides between the stretching assembly 331, and the limit bolt 3312 is rotated in the opposite direction to make the slider move upward to squeeze the stretching assembly 331 to fix the stretching assembly 331, thereby ensuring the stability of the support block 332.

[0055] Compared with the prior art, by arranging the stretching component 331 inside the third fixing plate 33, the length of the third fixing plate 33 can be flexibly adjusted according to the actual situation of the operator, which greatly improves the adjustability and adaptability of the support. After adjusting the length of the support block 332, the slider can be moved upward by reversely rotating the limit bolt 3312, and the stretching frame 3311 can be squeezed, so as to fix the stretching component 331, ensure the stability of the support block 332 after adjustment, and avoid the situation in which the surgical effect is affected by unstable support during the operation. The stretching component 331 is located inside the third fixing plate 33 and is tightly combined with the support block 332. It has a compact design and does not take up additional space, so it is easy to use in limited spaces such as operating rooms.

[0056] The present invention and its embodiments are described above, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and do not deviate from the purpose of the invention, they can creatively design a structure and embodiment similar to the technical solution, which should fall within the protection scope of the present invention.

Claims

1. A leg fixation fixture for orthopedic surgery, comprising a support frame (1), a support assembly (2), and a fixation assembly (3), wherein the support assembly (2) is located above the support frame (1), and is characterized in that: A limiting assembly (11) is provided inside the support frame (1), the limiting assembly (11) comprising a first ball screw (111) and a limiting frame (112), the limiting frame (112) being located at both ends of the first ball screw (111), limiting blocks (113) being provided on both sides of the limiting frame (112), the limiting blocks (113) being slidably connected to the support frame (1); The support assembly (2) comprises a support frame (21) and a moving assembly (22); the moving assembly (22) comprises a second ball screw (221) and a moving plate (222); a lifting portion (23) is provided on the moving plate (222); and the fixed assembly (3) is connected to the lifting portion (23); The fixing assembly (3) comprises a first fixing plate (31), a second fixing plate (32), and a third fixing plate (33), and adjustment assemblies (34) are provided on both sides of the second fixing plate (32) and the third fixing plate (33).

2. A leg fixation fixture for orthopedic surgery according to claim 1, characterized in that: The threads at both ends of the first ball screw (111) are in opposite directions, and the limiting frame (112) is threadedly connected to the first ball screw (111).

3. The leg fixation fixture for orthopedic surgery according to claim 1, characterized in that: The limit block (113) is fixedly connected to the limit frame (112); a first slide groove (114) corresponding to the limit block (113) is provided at the bottom of the support frame (1); the limit block (113) passes through the first slide groove (114) and is slidably connected with the first slide groove (114); and the limit block (113) is L-shaped; The moving assembly (22) is located inside the supporting frame (21), and the second ball screw (221) is located on both sides of the moving plate (222) and is connected to the moving plate (222) via threads.

4. The leg fixation fixture for orthopedic surgery according to claim 1, characterized in that: The second fixing plate (32) and the third fixing plate (33) are respectively located at two ends of the first fixing plate (31); the first fixing plate (31) is in an outwardly convex semi-arc shape; the second fixing plate (32) and the third fixing plate (33) are provided with arc-shaped grooves.

5. The leg fixation fixture for orthopedic surgery according to claim 1, characterized in that: The lifting part (23) comprises a first lifting component (231) and a second lifting component (232); the first lifting component (231) comprises a first telescopic rod (2311) and a second telescopic plate (2322); the first telescopic rod (2311) and the second telescopic plate (2322) are fixedly connected; and the second lifting component (232) is located above the first telescopic plate (2312).

6. The leg fixation fixture for orthopedic surgery according to claim 5, characterized in that: The second lifting assembly (232) comprises a second telescopic rod (2321) and a second telescopic plate (2322); the second telescopic rod (2321) is fixedly connected to the first telescopic plate (2312); the second telescopic rod (2321) is fixedly connected to the second telescopic plate (2322); the second telescopic plate (2322) is fixedly connected to the first fixed plate (31); the second fixed plate (32) and the third fixed plate (33) are hinged between the two ends of the second telescopic plate (2322) and the second telescopic plate (2322).

7. The leg fixation fixture for orthopedic surgery according to claim 1, characterized in that: The adjustment component (34) comprises an adjustment limit frame (341) and an adjustment disk (342); the adjustment limit frame (341) is located on both sides of the second fixed plate (32) and the third fixed plate (33); connecting columns are provided on both sides of the second fixed plate (32) and the third fixed plate (33); an arc-shaped slide groove corresponding to the connecting column is provided on the adjustment limit frame (341); the connecting column penetrates the arc-shaped slide groove and is slidably connected with the arc-shaped slide groove; the adjustment disk (342) and the connecting column are connected by a connecting arm (3421); and the adjustment disks (342) on both sides are connected by a driving component (343).

8. The leg fixation fixture for orthopedic surgery according to claim 7, characterized in that: The driving assembly (343) comprises a first gear (3431) and a second gear (3432) meshing with the first gear (3431), and the adjusting disk (342) and the second gear (3432) are coaxial and fixedly connected.

9. The leg fixation fixture for orthopedic surgery according to claim 1, characterized in that: The second fixing plate (32) and the third fixing plate (33) have the same structure. The second fixing plate (32) and the third fixing plate (33) both comprise a supporting soft body (321) and an air bag (322). The air bag (322) is located at the bottom of the supporting soft body (321) and is embedded in the supporting soft body (321).

10. The leg fixation fixture for orthopedic surgery according to claim 1, characterized in that: The third fixing plate (33) further comprises a stretching assembly (331) and a support block (332), and the third fixing plate (33) and the support block (332) are connected via the stretching assembly (331); The stretching assembly (331) comprises a stretching frame (3311) and a limiting bolt (3312); the stretching frame (3311) is located inside the third fixing plate (33) and is slidably connected to the third fixing plate (33); and One end is fixedly connected to the support block (332), the limiting bolt (3312) is located between the bottom of the third fixing plate (33) and is connected to the third fixing plate (33) through a thread, and a sliding block is provided at the bottom of the limiting bolt (3312), and the sliding block is slidably connected to the stretching frame (3311).

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