Lower limb fixing and multi-angle auxiliary device for hip joint surgery

Abstract

The hip joint surgery lower limb fixing and multi-angle auxiliary device comprises a supporting plate welded to the outer wall of the bottom of a surgery bed body and two symmetrically-distributed multi-angle surgery auxiliary mechanisms, and the supporting plate is provided with a distance adjusting mechanism used for adjusting the distance between the two multi-angle surgery auxiliary mechanisms; the distance adjusting mechanism comprises a linear guide rail fixedly connected to the side wall of the supporting plate, a two-way air cylinder fixedly installed on the side wall of the linear guide rail and two adjusting bases sequentially fixed to the two piston ends of the two-way air cylinder, and the two adjusting bases are both in sliding connection with the linear guide rail. The two adjusting seats are controlled to get close to each other or get away from each other through synchronous contraction or synchronous extension of the two piston ends of the two-way air cylinder, and the use distance between the two multi-angle operation auxiliary mechanisms can be adjusted. The hip joint operation assisting device can meet the requirements of various complex operations in a hip joint operation, can better assist a doctor in conducting the hip joint operation, and is beneficial to improving the accuracy and efficiency of the operation.

Description

Technical Field

[0001] The present invention relates to a surgical auxiliary device, in particular to a lower limb fixation and multi-angle auxiliary device for hip joint surgery. Background Art

[0002] The hip joint is composed of the acetabulum and the femoral head. It is one of the main weight-bearing joints of the human body. Its structure is deep and the force is complex. It not only supports the weight of the upper body, but also undertakes the activity regulation of the lower limbs. It is the core joint for maintaining daily walking and movement functions. In recent years, with the aggravation of the aging population and the high incidence of related metabolic diseases, the incidence of hip joint diseases (such as femoral head necrosis, hip osteoarthritis, etc.) has increased significantly. When the function of the hip joint is severely impaired and conservative treatment is ineffective, surgical intervention such as hip replacement is often required. During the implementation of hip surgery, in order to ensure the stability of the surgical field and the accuracy of the operation, the patient's lower limbs must be firmly and adjustable at multiple angles to meet the diverse requirements of different surgical procedures for limb position.

[0003] In actual application, existing lower limb fixation devices for hip joint surgery cannot achieve multi-angle flexible adjustment of the lower limbs in abduction, adduction, flexion and extension, and thus cannot meet the needs of various complex operations in hip joint surgery. It is not convenient to assist doctors in performing hip joint surgery, thus affecting the accuracy and efficiency of the surgery. Summary of the Invention

[0004] The purpose of the present invention is to provide a lower limb fixation and multi-angle auxiliary device for hip joint surgery, which meets the needs of various complex operations in hip joint surgery, can better assist doctors in performing hip joint surgery, and is conducive to improving the accuracy and efficiency of the surgery.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A lower limb fixation and multi-angle assisting device for hip joint surgery, characterized by comprising: a support plate welded to the bottom outer wall of an operating table and two symmetrically distributed multi-angle surgical assisting mechanisms, wherein the support plate is provided with a spacing adjustment mechanism for adjusting the spacing between the two multi-angle surgical assisting mechanisms;

[0007] The spacing adjustment mechanism includes a linear guide rail fixedly connected to the side wall of the support plate, a bidirectional cylinder fixedly installed on the side wall of the linear guide rail, and two adjustment seats fixed to the two piston ends of the bidirectional cylinder in sequence, and both adjustment seats are slidably connected to the linear guide rail;

[0008] The two adjustment seats are controlled to move closer to or farther away from each other by synchronously contracting or extending the two piston ends of the bidirectional cylinder, thereby adjusting the usable distance between the two multi-angle surgical auxiliary mechanisms.

[0009] Furthermore, each of the multi-angle surgical auxiliary mechanisms includes a hollow frame, a bidirectional screw rotatably installed in the hollow frame, two sliding seats symmetrically threaded on the two opposite threaded ends of the bidirectional screw, two adjustment arms symmetrically hinged on the top of the two sliding seats, two leg fixers installed in turn on the top of the two adjustment arms, a servo drive assembly and a lateral angle adjustment assembly.

[0010] Furthermore, the leg fixator includes a protective cover fixedly connected to the top outer wall of the adjusting arm, a limb placement plate fixedly connected to the top outer wall of the protective cover, a linkage gear rotatably connected to the bottom center of the limb placement plate through a transmission shaft, two racks engaged with the linkage gear, a control cylinder fixedly installed on the bottom outer wall of the limb placement plate, and two symmetrically distributed airbag-type clamping clamps.

[0011] Furthermore, the tops of the two adjusting arms are hinged to each other, and the two leg fixers are used to fix the thigh part and the calf part of the lower limb respectively.

[0012] Furthermore, a moving opening for the two sliding seats to move is provided on the top of the hollow frame, tracks are provided on both sides of the hollow frame, and the two sliding seats are slidably connected between the two tracks.

[0013] Furthermore, the servo drive assembly includes a gear box fixedly connected to the side wall of the hollow frame, a servo self-locking motor fixedly connected to the inside of the gear box, a driving bevel gear fixedly mounted on the output shaft of the servo self-locking motor, and a driven bevel gear fixedly mounted on one end of the bidirectional screw, and the driving bevel gear and the driven bevel gear are engaged with each other.

[0014] Furthermore, the servo self-locking motor drives the active bevel gear to rotate, and then the driven bevel gear engaged with the active bevel gear drives the bidirectional screw to rotate, and causes the two sliding seats threadedly connected to the bidirectional screw to move linearly, thereby adjusting the angle between the two adjusting arms.

[0015] Furthermore, the two racks are symmetrical and staggered, and the piston rod of the control cylinder is fixedly connected to one of the racks through a connecting block.

[0016] Furthermore, the two airbag-type clamps each include a guide opening opened at the top of the limb placement plate, two sliding pins slidingly connected in turn in the two guide openings, two symmetrically distributed guide structures, two lower limb fixing clamps symmetrically fixed on the two sliding pins, and two airbag assemblies symmetrically embedded in the two lower limb fixing clamps, and the bottom outer walls of the two sliding pins are fixed in turn on the outer wall of one end of the top of the two racks.

[0017] Furthermore, the guide structure includes a groove opened on the top of the limb placement plate, a guide shaft fixedly connected to the groove and two guide rods slidably connected to the guide shaft, and the adjacent outer walls of the two guide rods are respectively fixed on the outer walls of the two lower limb fixing clamps that are away from each other.

[0018] Furthermore, the lateral angle adjustment assembly includes a fixed cover fixedly connected to the side wall of the adjustment seat, a bearing seat fixedly connected to the side wall of the fixed cover, a rollover shaft rotatably mounted on the bearing seat, a rollover block fixedly connected between the rollover shaft and the hollow frame, a stepper motor fixedly mounted on the outer wall of one side of the fixed cover, a worm fixedly mounted on the output shaft of the stepper motor, and a worm wheel fixedly mounted on one end of the rollover shaft.

[0019] Furthermore, the worm and the worm wheel are meshed with each other and are both located in the fixed cover, and the output shaft of the stepper motor passes through one side of the fixed cover.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The present invention is provided with a spacing adjustment mechanism, which can flexibly adjust the use distance between the two multi-angle surgical auxiliary mechanisms, thereby better adapting to the use of patients of different body shapes;

[0022] 2. The present invention uses two airbag-type clamps with adjustable spacing to fix the lower limbs. They can be adaptively adjusted according to the shape and size of the limb, better fitting and covering the limb surface, thereby improving the stability of fixation and accommodating the lower limb fixation needs of patients of different body types. The inner airbag component can provide uniform pressure, reducing localized pressure on the limb, alleviating pain and discomfort, and thus helping to improve the comfort of lower limb fixation.

[0023] 3. The present invention uses a servo self-locking motor to control the forward and reverse rotation of the bidirectional screw to accurately adjust the angle between the two adjustment arms, thereby accurately controlling the degree of bending of the hip joint, facilitating precise adjustment of the flexion and extension angles of the lower limbs, and facilitating better assistance in hip joint surgery.

[0024] 4. The present invention is provided with a lateral angle adjustment component, which drives the worm to rotate forward and backward through a stepper motor, and then the worm wheel engaged with the worm will drive the rollover block on the rollover shaft to rotate forward and backward, thereby enabling the lower limb to move inward or outward, thereby facilitating the precise adjustment of the adduction and abduction angles of the lower limb. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure viewed from above as a whole;

[0026] Figure 2It is a schematic diagram of the overall bottom view of the three-dimensional structure of the present invention;

[0027] Figure 3 Schematic diagram of the top view of the hollow frame area of ​​the present invention;

[0028] Figure 4 This is a three-dimensional enlarged structural diagram of local parts of the multi-angle surgery assisting mechanism of the present invention;

[0029] Figure 5 This is a schematic diagram of the three-dimensional enlarged structure of two leg fixators on two adjustment arms in the present invention;

[0030] Figure 6 It is a schematic diagram of a three-dimensional enlarged structure between the bidirectional screw and the two sliding seats in the present invention;

[0031] Figure 7 This is a schematic diagram of the three-dimensional enlarged structure of the bottom area of ​​the limb placement board in the present invention;

[0032] Figure 8 This is a schematic diagram of the three-dimensional enlarged structure of the top area of ​​the limb placement board in the present invention;

[0033] Figure 9 It is a three-dimensional enlarged structural diagram of the spacing adjustment mechanism of the present invention;

[0034] Figure 10 Schematic diagram of the enlarged structure of the servo drive assembly in the present invention;

[0035] Figure 11 It is a schematic side view of the interior structure of the fixed cover in the present invention.

[0036] Figure: 1, surgical bed; 2, support plate; 3, linear guide; 4, bidirectional cylinder; 5, adjustment seat; 6, multi-angle surgical auxiliary mechanism; 7, hollow frame; 8, bidirectional screw; 9, sliding seat; 10, adjustment arm; 11, protective cover; 12, limb placement plate; 13, linkage gear; 14, rack; 15, sliding pin; 16, lower limb fixing clamp; 17, control cylinder; 18, groove; 19, guide shaft; 20, guide Steering rod; 21. Guide port; 22. Gearbox; 23. Servo self-locking motor; 24. Driving bevel gear; 25. Driven bevel gear; 26. Fixed cover; 27. Bearing seat; 28. Rollover shaft; 29. ​​Rollover block; 30. Stepper motor; 31. Worm; 32. Worm gear; 33. Airbag assembly; 34. Track; 35. Moving port; 36. Motor mounting seat; 37. Drive shaft; 38. Connecting block; 39. Control panel. DETAILED DESCRIPTION

[0037] The present invention will be further described below by describing a preferred embodiment in detail with reference to the accompanying drawings.

[0038] like Figure 1-6 、 Figure 9-10 As shown, a lower limb fixation and multi-angle auxiliary device for hip joint surgery includes a support plate 2 welded to the bottom outer wall of the operating bed 1, a control panel 39 fixedly installed on the side wall of the operating bed 1 for controlling the execution of the electrical components of the entire device, and two symmetrically distributed multi-angle surgical auxiliary mechanisms 6.

[0039] In a specific embodiment, a spacing adjustment mechanism for adjusting the spacing between two multi-angle surgical auxiliary mechanisms 6 is provided on the support plate 2. The spacing adjustment mechanism includes a linear guide rail 3 fixedly connected to the side wall of the support plate 2, a bidirectional cylinder 4 fixedly installed on the side wall of the linear guide rail 3, and two adjustment seats 5 fixed in sequence to the two piston ends of the bidirectional cylinder 4.

[0040] Furthermore, the two adjustment seats 5 are both slidably connected to the linear guide rail 3, and the two multi-angle surgical auxiliary mechanisms 6 are respectively used to effectively fix the legs of patients who need hip joint surgery. In this way, the two piston ends of the two-way cylinder 4 can be synchronously contracted or extended to control the two adjustment seats 5 to move closer to or away from each other, thereby enabling the use spacing between the two multi-angle surgical auxiliary mechanisms 6 to be flexibly adjusted to better adapt to the use of patients of different body shapes.

[0041] Specifically, the multi-angle surgical auxiliary mechanism 6 includes a hollow frame 7, a bidirectional screw 8 rotatably installed in the hollow frame 7, two sliding seats 9 symmetrically threaded on the two opposite threaded ends of the bidirectional screw 8, two adjustment arms 10 symmetrically hinged on the top of the two sliding seats 9, two leg fixers installed in turn on the top of the two adjustment arms 10, a servo drive assembly and a lateral angle adjustment assembly.

[0042] Furthermore, the tops of the two adjustment arms 10 are hinged to each other, and the two leg fixators are used to fix the thigh part and the calf part of the lower limb respectively, and the degree of bending of the joint is regulated by changing the angle between the two adjustment arms 10.

[0043] Furthermore, a moving opening 35 for the two sliding seats 9 to move is opened at the top of the hollow frame 7, and tracks 34 are opened on both sides of the hollow frame 7. The two sliding seats 9 are slidably connected between the two tracks 34, which can ensure the stability of the linear motion of the two sliding seats 9.

[0044] Furthermore, the servo drive assembly includes a gear box 22 fixedly connected to the side wall of the hollow frame 7, a servo self-locking motor 23 fixedly connected to the inside of the gear box 22 through a motor mounting seat 36, a driving bevel gear 24 fixedly mounted on the output shaft of the servo self-locking motor 23, and a driven bevel gear 25 fixedly mounted on one end of the bidirectional screw 8. The output shaft of the servo self-locking motor 23 passes through the motor mounting seat 36, and the driving bevel gear 24 and the driven bevel gear 25 are engaged with each other.

[0045] When this embodiment is implemented, the patient's lower limbs are placed on the limb placement board 12, and then the two leg fixators are used to fix the patient's thigh and calf parts in turn. Then, the servo self-locking motor 23 drives the active bevel gear 24 to rotate, and then the driven bevel gear 25 meshing with the active bevel gear 24 drives the bidirectional screw 8 to rotate, and then the two sliding seats 9 threadedly connected to the bidirectional screw 8 will perform linear motion, so that the servo self-locking motor 23 controls the bidirectional screw 8 to rotate forward, so that the two sliding seats 9 can move closer to each other, thereby gradually reducing the angle between the two adjustment arms 10, and the servo self-locking motor 23 controls the bidirectional screw 8 to rotate in the reverse direction, so that the two sliding seats 9 can move away from each other, thereby gradually increasing the angle between the two adjustment arms 10. In this way, by accurately adjusting the angle between the two adjustment arms 10, the bending degree of the hip joint can be accurately controlled, which is convenient for accurately adjusting the flexion and extension angles of the lower limbs.

[0046] like Figure 1 、 Figure 5 and Figure 7-8 The above-mentioned leg fixator includes a protective cover 11 fixedly connected to the top outer wall of the adjusting arm 10, a limb placement plate 12 fixedly connected to the top outer wall of the protective cover 11, a linkage gear 13 rotatably connected to the bottom center of the limb placement plate 12 through a transmission shaft 37, two racks 14 engaged with the linkage gear 13, a control cylinder 17 fixedly installed on the bottom outer wall of the limb placement plate 12, and two symmetrically distributed airbag clamps.

[0047] Furthermore, the two racks 14 are symmetrical and staggered, and the piston rod of the control cylinder 17 is fixedly connected to one of the racks 14 through a connecting block 38; the two airbag-type clamping clamps each include a guide port 21 opened at the top of the limb placement plate 12, two sliding pins 15 slidingly connected to the two guide ports 21 in turn, two symmetrically distributed guide structures, two lower limb fixing clamps 16 symmetrically fixed on the two sliding pins 15, and two airbag assemblies 33 symmetrically embedded in the two lower limb fixing clamps 16. The outer walls of the bottom ends of the two sliding pins 15 are fixed on the outer walls of one end of the top of the two racks 14 in turn. It should be noted that the airbag assembly 33 is a prior art and will not be described in detail.

[0048] Furthermore, the guide structure includes a groove 18 opened at the top of the limb placement plate 12, a guide shaft 19 fixedly connected to the groove 18, and two guide rods 20 slidably connected to the guide shaft 19. The outer walls of the adjacent sides of the two guide rods 20 are respectively fixed on the outer walls of the two lower limb fixing clamps 16 that are away from each other.

[0049] During the specific implementation of this embodiment: the piston rod of the cylinder 17 is controlled to contract to drive a rack 14 connected to the connecting block 38 to move, and then under the linkage effect of the linkage gear 13, the other rack 14 moves in the opposite direction, and then the two racks 14 with opposite displacements will drive the two lower limb fixing clamps 16 fixed on the two sliding pins 15 to align and move closer, and the two air bag components 33 on the inner side of the two lower limb fixing clamps 16 wrap and fit the surface of the limb. In this way, two air bag clamps with adjustable spacing are used to fix the lower limbs, which can be adaptively adjusted according to the shape and size of the limbs, and can better fit and cover the surface of the limbs, thereby improving the stability of the fixation, and facilitating the good adaptation to the lower limb fixation needs of patients of different body shapes, and the inner air bag component 33 can provide uniform pressure, reduce local compression on the limbs, help alleviate pain and discomfort, and thus help improve the comfort of lower limb fixation.

[0050] like Figure 2 、 Figure 4 and Figure 11 The lateral angle adjustment assembly includes a fixed cover 26 fixedly connected to the side wall of the adjustment seat 5, a bearing seat 27 fixedly connected to the side wall of the fixed cover 26, a rollover shaft 28 rotatably mounted on the bearing seat 27, a rollover block 29 fixedly connected between the rollover shaft 28 and the hollow frame 7, a stepper motor 30 fixedly mounted on the outer wall of one side of the fixed cover 26, a worm 31 fixedly mounted on the output shaft of the stepper motor 30, and a worm gear 32 fixedly mounted on one end of the rollover shaft 28.

[0051] Furthermore, the worm 31 and the worm wheel 32 are meshed with each other and are both located in the fixed cover 26 , and the output shaft of the stepper motor 30 passes through one side of the fixed cover 26 .

[0052] During the specific implementation of this embodiment: the stepper motor 30 drives the worm 31 to rotate forward and reverse, and then the worm wheel 32 engaged with the worm 31 drives the rollover block 29 on the rollover shaft 28 to rotate forward and reverse, thereby enabling the lower limb to move inward or outward, thereby facilitating the precise adjustment of the adduction and abduction angles of the lower limb.

[0053] The usage process of the present invention is as follows: first, the two piston ends of the bidirectional cylinder 4 are synchronously contracted or extended to control the two adjustment seats 5 to move closer to or away from each other, so that the usage distance between the two multi-angle surgical auxiliary mechanisms 6 can be flexibly adjusted to better adapt to the use of patients of different body shapes.

[0054] Secondly, the patient's lower limbs are placed on the limb placement board 12, and then the two leg fixators are used to fix the patient's thigh and calf in turn, and then the servo self-locking motor 23 drives the active bevel gear 24 to rotate, and then the driven bevel gear 25 engaged with the active bevel gear 24 will drive the bidirectional screw 8 to rotate, and then the two sliding seats 9 threadedly connected to the bidirectional screw 8 will perform linear motion, so that the servo self-locking motor 23 controls the bidirectional screw 8 to rotate forward, so that the two sliding seats 9 can move closer to each other, so that the angle between the two adjustment arms 10 gradually becomes smaller, and the servo self-locking motor 23 controls the bidirectional screw 8 to rotate in the reverse direction, so that the two sliding seats 9 can move away from each other, so that the angle between the two adjustment arms 10 gradually becomes larger. In this way, by accurately adjusting the angle between the two adjustment arms 10, the degree of bending of the hip joint can be accurately controlled, which is convenient for accurately adjusting the flexion and extension angles of the lower limbs.

[0055] Finally, the worm 31 is driven to rotate forward and backward by the stepper motor 30, and then the worm wheel 32 engaged with the worm 31 drives the rollover block 29 on the rollover shaft 28 to rotate forward and backward, thereby enabling the lower limb to move inward or outward, thereby facilitating the precise adjustment of the adduction and abduction angles of the lower limb.

[0056] To sum up, the present invention is a lower limb fixation and multi-angle auxiliary device for hip joint surgery. During hip joint surgery, the lower limbs can not only be stably fixed, but also the lower limbs can be flexibly adjusted at multiple angles in abduction, adduction, flexion and extension. The angle adjustment is precise, thereby meeting the needs of various complex operations in hip joint surgery, and can better assist doctors in performing hip joint surgery, which is conducive to improving the accuracy and efficiency of the surgery.

[0057] It should be noted that, in the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0058] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0059] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description is not intended to limit the present invention. After reading the above description, various modifications and substitutions of the present invention will become apparent to those skilled in the art. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A lower limb fixation and multi-angle assist device for hip joint surgery, characterized in that: include: A support plate welded to the outer wall of the bottom of the operating table and two symmetrically distributed multi-angle surgical auxiliary mechanisms, wherein the support plate is provided with a spacing adjustment mechanism for adjusting the spacing between the two multi-angle surgical auxiliary mechanisms; The spacing adjustment mechanism includes a linear guide rail fixedly connected to the side wall of the support plate, a bidirectional cylinder fixedly installed on the side wall of the linear guide rail, and two adjustment seats fixed to the two piston ends of the bidirectional cylinder in sequence, and both adjustment seats are slidably connected to the linear guide rail; The two adjustment seats are controlled to move closer to or farther away from each other by synchronously contracting or extending the two piston ends of the bidirectional cylinder, thereby adjusting the usable distance between the two multi-angle surgical auxiliary mechanisms.

2. The lower limb fixation and multi-angle assist device for hip joint surgery according to claim 1, characterized in that: Each of the multi-angle surgical auxiliary mechanisms includes a hollow frame, a bidirectional screw rotatably installed in the hollow frame, two sliding seats symmetrically threaded on the two opposite threaded ends of the bidirectional screw, two adjustment arms symmetrically hinged on the top of the two sliding seats, two leg fixators installed in turn on the top of the two adjustment arms, a servo drive assembly and a lateral angle adjustment assembly.

3. The lower limb fixation and multi-angle assist device for hip joint surgery according to claim 2, characterized in that: The leg fixator includes a protective cover fixedly connected to the top outer wall of the adjusting arm, a limb placement plate fixedly connected to the top outer wall of the protective cover, a linkage gear rotatably connected to the bottom center of the limb placement plate through a transmission shaft, two racks engaged with the linkage gear, a control cylinder fixedly installed on the bottom outer wall of the limb placement plate, and two symmetrically distributed airbag-type clamping clamps.

4. The lower limb fixation and multi-angle assist device for hip joint surgery according to claim 2 or 3, characterized in that: The tops of the two adjusting arms are hinged to each other, and the two leg fixers are used to fix the thigh part and the calf part of the lower limbs respectively.

5. The lower limb fixation and multi-angle assist device for hip joint surgery according to claim 2, characterized in that: The top of the hollow frame is provided with a moving opening for the two sliding seats to move. Tracks are provided on both sides of the hollow frame, and the two sliding seats are slidably connected between the two tracks.

6. The lower limb fixation and multi-angle assist device for hip joint surgery according to claim 2, characterized in that: The servo drive assembly includes a gear box fixedly connected to the side wall of the hollow frame, a servo self-locking motor fixedly connected to the inside of the gear box, a driving bevel gear fixedly mounted on the output shaft of the servo self-locking motor, and a driven bevel gear fixedly mounted on one end of the bidirectional screw, and the driving bevel gear and the driven bevel gear are engaged with each other.

7. The lower limb fixation and multi-angle assist device for hip joint surgery according to claim 6, characterized in that: The servo self-locking motor drives the active bevel gear to rotate, and then the driven bevel gear meshing with the active bevel gear drives the bidirectional screw to rotate, and causes the two sliding seats threadedly connected to the bidirectional screw to move linearly to adjust the angle between the two adjusting arms.

8. The lower limb fixation and multi-angle assist device for hip joint surgery according to claim 3, characterized in that: The two racks are symmetrical and staggered, and the piston rod of the control cylinder is fixedly connected to one of the racks through a connecting block.

9. The lower limb fixation and multi-angle assist device for hip joint surgery according to claim 3, characterized in that: The two airbag-type clamps each include a guide opening opened at the top of the limb placement plate, two sliding pins slidingly connected to the two guide openings in sequence, two symmetrically distributed guide structures, two lower limb fixing clamps symmetrically fixed on the two sliding pins, and two airbag assemblies symmetrically embedded in the two lower limb fixing clamps, and the bottom outer walls of the two sliding pins are fixed in sequence on the outer wall of one end of the top of the two racks.

10. The lower limb fixation and multi-angle assist device for hip joint surgery according to claim 9, characterized in that: The guide structure includes a groove opened on the top of the limb placement plate, a guide shaft fixedly connected to the groove and two guide rods slidably connected to the guide shaft, and the adjacent outer walls of the two guide rods are respectively fixed on the outer walls of the two lower limb fixing clamps that are away from each other.

11. The lower limb fixation and multi-angle assist device for hip joint surgery according to claim 3, characterized in that: The lateral angle adjustment assembly includes a fixed cover fixedly connected to the side wall of the adjustment seat, a bearing seat fixedly connected to the side wall of the fixed cover, a rollover shaft rotatably mounted on the bearing seat, a rollover block fixedly connected between the rollover shaft and the hollow frame, a stepper motor fixedly mounted on the outer wall of one side of the fixed cover, a worm fixedly mounted on the output shaft of the stepper motor, and a worm wheel fixedly mounted on one end of the rollover shaft.

12. The lower limb fixation and multi-angle assisting device for hip joint surgery according to claim 11, characterized in that: The worm and the worm wheel are meshed with each other and are both located in the fixed cover, and the output shaft of the stepping motor passes through one side of the fixed cover.

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