Hip replacement anti-slip hook device

Abstract

The present invention discloses an anti-slip hook device for hip replacement, which is in the field of hip replacement technology. The device comprises an operating table and a hook, a fixing mechanism fixedly mounted on the operating table and used to fix the hook, and a connecting mechanism used to connect the fixing mechanism and the hook, and capable of adjusting the position of the hook relative to the fixing mechanism. The present invention provides multiple sets of connecting mechanisms and hooks on a fixing mechanism to pull the hook, thereby replacing the pulling of the hook by medical staff, reducing the workload of medical staff, and increasing the stability of the hook pulling process, thereby preventing the hook from slipping and affecting the surgery.

Description

Technical Field

[0001] The present invention relates to the technical field of hip joint replacement, in particular to an anti-slip hook device for hip joint replacement. Background Art

[0002] During hip replacement surgery, an opening needs to be cut in the muscles near the hip joint first, and then the muscles at the incision are pulled with a hook to expose the hip joint, thereby completing the preliminary work of the surgery.

[0003] During the operation, medical staff need to hold the hip joint with hooks throughout the whole process. Since the hip joint muscle tissue is relatively tight, it is easy to slip when pulled manually, affecting the operation. With external fixation, multiple hooks are needed to pull the incision open in all directions during the muscle pulling process. Therefore, the external fixation method requires a large number of scattered traction devices, which can easily interfere with the normal operation of medical staff. Summary of the Invention

[0004] The purpose of the present invention is to provide an anti-slip hook device for hip replacement to solve the problem raised in the above-mentioned background technology that during the operation, the hook needs to be held by medical staff throughout the whole process. Since the hip joint muscle tissue is relatively tight, it is easy to slip when pulled by manpower, affecting the operation. While through external fixation, multiple hooks are needed to pull the incision open in all directions during the process of pulling the muscles. Therefore, the external fixation method requires a large number of scattered traction devices, which is easy to interfere with the normal operation of medical staff.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a hip replacement anti-slip hook device, comprising an operating table and a hook, and further comprising a fixing mechanism, wherein the fixing mechanism is fixedly disposed on the operating table and is used to fix the hook;

[0006] The connecting mechanism is used to connect the fixing mechanism and the hook, and the connecting mechanism can adjust the position of the hook relative to the fixing mechanism.

[0007] Preferably, the connecting mechanism includes an adjusting device, the adjusting device is fixedly connected to a telescopic mechanism at one end near the center of the fixing mechanism, the end of the telescopic mechanism is fixedly connected to a lifting device, the lifting device is fixedly connected to the pull hook, the length of the telescopic mechanism is adjustable, and the pull hook can be adjusted in the vertical direction through the lifting device.

[0008] Preferably, the telescopic mechanism includes a first straight rod, the first straight rod is fixedly connected to the lifting device, the first straight rod is slidably connected to a threaded rod, the threaded rod is fixedly connected to the lifting device, the end of the first straight rod is rotatably connected to a sleeve, and the end of the sleeve is threadedly connected to the threaded portion of the threaded rod.

[0009] Preferably, the lifting device includes a first connecting plate, the first connecting plate is fixedly connected to the end of the threaded rod, the side wall of the first connecting plate is fixedly connected to the mounting plate, the side wall of the mounting plate is vertically slidably connected to an inverted L-shaped plate, a bolt vertically penetrates the upper end of the inverted L-shaped plate, the bolt is threadedly connected to the inverted L-shaped plate, the lower end of the bolt is rotatably connected to the upper end of the mounting plate, and the side wall of the inverted L-shaped plate is fixedly connected to the pull hook.

[0010] Preferably, the fixing mechanism includes a gear ring, and the left and right sides of the lower end of the gear ring are fixedly connected to connecting frames, the connecting frames are fixedly connected to the upper end of the operating table, an annular groove is provided at the upper end of the gear ring, the adjusting device is slidably connected to the annular groove, and the adjusting device is fixedly connected to a driving mechanism, and the driving mechanism is used to control the adjusting device to slide along the annular groove.

[0011] Preferably, the adjusting device includes a slider, the slider is slidably connected to the annular groove, the upper end of the slider is fixedly connected to the bottom plate, and the upper end of the bottom plate is fixedly connected to a fixed block on one side near the center of the gear ring; the front and rear sides of the upper end of the bottom plate are both laterally slidably connected to the first clamping plate and the second clamping plate, the first clamping plate is on the right, and the second clamping plate is on the left; the first clamping plate and the second clamping plate are fixedly connected to a compressed spring, the right end of the fixing block is located at the two first clamping plates, both of which are laterally threaded and connected with the second bolt, and the ends of the second bolts are rotatably connected to the corresponding first clamping plates, and the upper end of the fixing block is provided with The lockhole that is formed on the top of a shaft is formed on the second cam, and the locking plate is fixedly mounted on the second cam, and the locking plate is fixedly mounted on the second cam.

[0012] Preferably, the driving mechanism includes a mounting frame, which is fixedly connected to the upper end of the base plate, and the mounting frame is rotatably connected to a worm, the worm is engaged with a gear ring, and the worm transmission is connected to a driving device, and the driving device is used to drive the worm transmission.

[0013] Preferably, the driving device includes a mounting platform, which is fixedly connected to the upper end of the mounting frame, and the upper end of the mounting platform is rotatably connected to a crank, a first gear is provided at the lower end of the mounting platform, the crank passes through the mounting platform and is fixedly connected to the first gear, a second gear is provided on the side wall of the mounting frame, the worm passes through the mounting frame and is fixedly connected to the second gear, and the first gear and the second gear are connected through an external transmission device.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention arranges multiple groups of connecting mechanisms and hooks on a fixed mechanism to pull the hook, thereby replacing the pulling of the hook by medical staff, reducing the workload of medical staff, and increasing the stability of the hook pulling process, preventing the hook from slipping and affecting the operation.

[0016] 2. During the operation, the initial preload of the spring is adjusted by turning the second bolt to adjust the difficulty of tilting the hook, thereby facilitating flexible wound traction.

[0017] 3. The present invention uses the first sliding rods on the front and rear sides, which are independent of each other, as the rotation axis for the right end of the rotating plate to rotate forward and backward. Compared with the method of using only a single rotation axis, Figure 9 It can be clearly seen that under the same rotation angle b, the retreat distance a of the hook in the manner adopted by the present invention is smaller, which further prevents the muscle from being torn during the tilting process of the hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure at center A;

[0020] Figure 3 for Figure 1 A magnified schematic diagram of the structure at point B in the middle;

[0021] Figure 4 It is a schematic diagram of the front cross-section structure of the telescopic mechanism;

[0022] Figure 5 It is a structural diagram of the regulating device;

[0023] Figure 6 This is a half-section exploded view of the regulating device;

[0024] Figure 7 It is a structural diagram of the driving mechanism;

[0025] Figure 8 It is a mimicry diagram when hooking and pulling;

[0026] Figure 9 Comparison chart of the hook rotating on different axes.

[0027] Figures: operating table 1, hook 2, fixing mechanism, connecting mechanism, adjusting device, telescopic mechanism, lifting device, first straight rod 8, threaded rod 9, sleeve 10, first connecting plate 11, mounting plate 12, inverted L-shaped plate 13, bolt 14, gear ring 15, connecting frame 16, annular groove 17, driving mechanism, slider 19, base plate 20, fixing block 21, first splint 22, second splint 23, spring 24, second bolt 25, rotating plate 26, first slide bar 27, arc groove 28, third splint 29, second slide bar 30, rectangular groove 31, mounting frame 32, worm 33, driving device, mounting table 35, crank 36, first gear 37, second gear 38. DETAILED DESCRIPTION

[0028] See also Figure 1-9 The present invention provides a technical solution: a hip replacement anti-slip hook device, comprising an operating table 1 and a hook 2, characterized in that: a fixing mechanism, the fixing mechanism is fixedly arranged on the operating table 1, and is used to fix the hook 2;

[0029] The connecting mechanism is used to connect the fixing mechanism and the hook 2, and the connecting mechanism can adjust the position of the hook 2 relative to the fixing mechanism.

[0030] During operation, the fixing mechanism is fixed on the operating table 1 and is placed above the patient's surgical site. Then, multiple sets of connecting mechanisms and hooks 2 are set on the fixing mechanism. The position of the corresponding hook 2 relative to the fixing mechanism is adjusted through the connecting mechanism, and the hook 2 is fixed, so that the hook 2 can stretch the patient's surgical site; thereby replacing the medical staff's pulling of the hook 2, reducing the medical staff's work intensity, and increasing the stability of the pulling process of the hook 2, preventing the hook 2 from slipping and affecting the operation.

[0031] The present invention pulls the hook 2 by arranging multiple groups of connecting mechanisms and the hook 2 on a fixed mechanism, thereby replacing the pulling of the hook 2 by medical staff, reducing the workload of medical staff, and increasing the stability of the pulling process of the hook 2, preventing the hook 2 from slipping and affecting the operation.

[0032] The connecting mechanism includes an adjusting device, which is fixedly connected to a telescopic mechanism at one end near the center of the fixing mechanism, and a lifting device is fixedly connected to the end of the telescopic mechanism. The lifting device is fixedly connected to the hook 2, and the length of the telescopic mechanism is adjustable. The hook 2 can be adjusted in the vertical direction through the lifting device.

[0033] During the process of pulling the wound, the height of the hook 2 is adjusted by the lifting device so that the hook 2 can be inserted into wounds at different heights. At the same time, the length of the telescopic mechanism is adjusted so that the hook 2 can smoothly pull the patient's wound and complete the exposure of the patient's hip joint.

[0034] The telescopic mechanism includes a first straight rod 8, which is fixedly connected to the lifting device. The first straight rod 8 is slidably connected to a threaded rod 9, which is fixedly connected to the lifting device. The end of the first straight rod 8 is rotatably connected to a sleeve 10, and the end of the sleeve 10 is threadedly connected to the threaded portion of the threaded rod 9.

[0035] During operation, the sleeve 10 is rotated to cause threaded transmission between the sleeve 10 and the threaded rod 9, thereby driving the threaded rod 9 to slide relative to the first straight rod 8, so that the telescopic mechanism can complete the extension and shortening. At the same time, the self-locking feature of the threaded transmission is utilized to make the traction process of the wound more stable.

[0036] The lifting device includes a first connecting plate 11, which is fixedly connected to the end of the threaded rod 9. The side wall of the first connecting plate 11 is fixedly connected to the mounting plate 12. The side wall of the mounting plate 12 is vertically slidably connected to an inverted L-shaped plate 13. A bolt 14 vertically penetrates the upper end of the inverted L-shaped plate 13. The bolt 14 is threadedly connected to the inverted L-shaped plate 13. The lower end of the bolt 14 is rotatably connected to the upper end of the mounting plate 12. The side wall of the inverted L-shaped plate 13 is fixedly connected to the hook 2.

[0037] During operation, the bolt 14 is rotated to cause threaded transmission between the bolt 14 and the inverted L-shaped plate 13, thereby causing the inverted L-shaped plate 13 to slide vertically relative to the mounting plate 12. The mounting plate 12 drives the hook 2 to move vertically, causing the vertical height of the hook 2 to change.

[0038] The fixing mechanism includes a gear ring 15, and the left and right sides of the lower end of the gear ring 15 are fixedly connected to a connecting frame 16, the connecting frame 16 is fixedly connected to the upper end of the operating table 1, and an annular groove 17 is opened at the upper end of the gear ring 15. The adjusting device is slidably connected to the annular groove 17, and the adjusting device is fixedly connected to a driving mechanism, which is used to control the adjusting device to slide along the annular groove 17.

[0039] During operation, the gear ring 15 is placed above the wound so that the wound is located at the center of the gear ring 15 , and then the position of the adjustment device on the gear ring 15 is controlled by the driving mechanism to change the pulling angle of the hook 2 .

[0040] refer to Figure 2The adjusting device includes a slider 19, which is slidably connected to the annular groove 17. The upper end of the slider 19 is fixedly connected to a base plate 20, and a fixed block 21 is fixedly connected to the side of the upper end of the base plate 20 near the center of the gear ring 15; the front and rear sides of the upper end of the base plate 20 are both laterally slidably connected to the first clamping plate 22 and the second clamping plate 23, the first clamping plate 22 is on the right, and the second clamping plate 23 is on the left; a compressed spring 24 is fixedly connected between the first clamping plate 22 and the second clamping plate 23, and the right end of the fixing block 21 is located at the two first clamping plates 22, and is laterally threaded with a second bolt 25, and the ends of the second bolt 25 are rotatably connected to the corresponding first clamping plate 22, and the upper end of the fixing block 21 is provided with The rotating plate 26, the right end of the rotating plate 26 is fixedly connected to the second connecting plate 18, the second connecting plate 18 is fixedly connected to the end of the first straight rod 8, the front and rear sides of the upper end of the fixed block 21 are vertically fixedly connected to the first sliding rod 27, the front and rear sides of the rotating plate 26 are provided with arc grooves 28, the first sliding rod 27 is respectively slidably connected to the arc grooves 28 on the same side of the front and rear, and the trajectories of the arc grooves 28 are all the first sliding rods 27 on the opposite sides of the front and rear as the center of the circle, the upper ends of the two first sliding rods 27 are jointly fixedly connected to the third splint 29, the upper ends of the second splints 23 are fixedly connected to the second sliding rod 30, and the lower end of the rotating plate 26 is located at the second sliding rod 30. A rectangular groove 31 is provided, and the second sliding rod 30 is located in the rectangular groove 31.

[0041] The hook 2 adjusts the pulling direction during the process of pulling the wound: when the hook 2 pulls the wound and keeps the wound open, the muscle is elastic, so the hook 2 is sunken into the muscle. Further, if the slider 19 is driven to move relative to the annular groove 17, the side wall of the hook 2 will be blocked by the muscle (refer to Figure 8 ), at this time, the side wall of the hook 2 will be subjected to the reaction force of the muscle, and the hook 2 will further rotate with a first slide bar 27 (taking the first slide bar 27 on the front side as an example), and the hook 2 will tilt at this time, so that the hook 2 can pass over the muscle depression more smoothly, while reducing the damage to the muscle caused by the hook 2 during the movement on the muscle, and effectively avoiding muscle tearing; in the process of the hook 2 tilting,

[0042] First, the springs 24 on the front and rear sides apply a leftward thrust to the front and rear sides of the rotating plate 26, so that the right ends of the annular grooves 17 on the front and rear sides of the rotating plate 26 are in close contact with the corresponding first slide bar 27. Therefore, when the hook 2 is tilted, the corresponding rotating plate 26 rotates relative to the fixed block 21. The elastic force of the spring 24 will make the rotating plate 26 have a tendency to reset, and then the hook 2 has a tendency to reset. After the hook 2 reaches the predetermined position, it will be reset to a certain extent, and under the joint action of the muscle contour supporting the hook 2 and the reset force applied by the spring 24 to the rotating plate 26, the hook 2 is made to fit the muscle contour as much as possible, further preventing the hook 2 from pulling the muscle in a tilted state, resulting in the pulling force of the hook 2 on the muscle being concentrated on one side, causing muscle tearing.

[0043] Second, during the operation, the initial preload force of the spring 24 is adjusted by rotating the second bolt 25, thereby adjusting the difficulty of tilting the hook 2, thereby facilitating flexible wound traction.

[0044] Thirdly, the present invention adopts the first slide bar 27 which is independent of each other on the front and rear sides, and respectively serves as the rotation axis for the right end of the rotating plate 26 to rotate forward and backward. Compared with the method of using only a single rotation axis, Figure 9 It can be clearly seen that under the same rotation angle b, the retreat distance a of the hook 2 in the manner adopted by the present invention is smaller, which further prevents the muscle from being torn during the tilting process of the hook 2.

[0045] The driving mechanism includes a mounting frame 32, which is fixedly connected to the upper end of the base plate 20. The mounting frame 32 is rotatably connected to a worm 33, which is engaged with the gear ring 15. The worm 33 is transmission-connected to a driving device, which is used to drive the worm 33.

[0046] The driving device includes a mounting platform 35, which is fixedly connected to the upper end of the mounting frame 32. The upper end of the mounting platform 35 is rotatably connected to a crank 36. A first gear 37 is provided at the lower end of the mounting platform 35. The crank 36 passes through the mounting platform 35 and is fixedly connected to the first gear 37. A second gear 38 is provided on the side wall of the mounting frame 32. The worm 33 passes through the mounting frame 32 and is fixedly connected to the second gear 38. The first gear 37 and the second gear 38 are connected through an external transmission device.

[0047] The worm 33 is driven to rotate by shaking the crank 36 , thereby driving the slider 19 to slide along the annular groove 17 .

Claims

1. A hip replacement anti-slip hook device, comprising an operating table (1) and a hook (2), characterized in that: A fixing mechanism, the fixing mechanism being fixedly arranged on the operating table (1) and being used to fix the retractor (2); A connecting mechanism, the connecting mechanism being used to connect the fixing mechanism and the hook (2), the connecting mechanism being capable of adjusting the position of the hook (2) relative to the fixing mechanism; The connecting mechanism includes an adjusting device, wherein the adjusting device is fixedly connected to a telescopic mechanism at one end near the center of the fixing mechanism, and the end of the telescopic mechanism is fixedly connected to a lifting device, and the lifting device is fixedly connected to the hook (2). The length of the telescopic mechanism is adjustable, and the position of the hook (2) can be adjusted in the vertical direction by the lifting device. The fixing mechanism comprises a gear ring (15), the left and right sides of the lower end of the gear ring (15) are fixedly connected to a connecting frame (16), the connecting frame (16) is fixedly connected to the upper end of the operating table (1), the upper end of the gear ring (15) is provided with an annular groove (17), the adjusting device is slidably connected to the annular groove (17), the adjusting device is fixedly connected to a driving mechanism, and the driving mechanism is used to control the adjusting device to slide along the annular groove (17); The adjusting device comprises a slider (19), the slider (19) is slidably connected to the annular groove (17), the upper end of the slider (19) is fixedly connected to a base plate (20), and the upper end of the base plate (20) is fixedly connected to a fixed block (21) on one side close to the center of the gear ring (15); the front and rear sides of the upper end of the base plate (20) are both laterally slidably connected to a first clamping plate (22) and a second clamping plate (23), the first clamping plate (22) is on the right, and the second clamping plate (23) is on the left; a compressed spring (24) is fixedly connected between the first clamping plate (22) and the second clamping plate (23), the right end of the fixed block (21) is located at the two first clamping plates (22) and is laterally threaded with a second bolt (25), the ends of the second bolt (25) are rotatably connected to the corresponding first clamping plates (22), and the upper end of the fixed block (21) is provided with A rotating plate (26), the right end of the rotating plate (26) is fixedly connected to a second connecting plate (18), the second connecting plate (18) is fixedly connected to the end of the first straight rod (8), the front and rear sides of the upper end of the fixed block (21) are vertically fixedly connected to the first slide bar (27), the front and rear sides of the rotating plate (26) are provided with arc grooves (28), the first slide bar (27) is respectively slidably connected to the arc grooves (28) on the same side of the front and rear, the tracks of the arc grooves (28) are all centered on the first slide bar (27) on the opposite sides of the front and rear, the upper ends of the two first slide bars (27) are fixedly connected to a third clamping plate (29), the upper ends of the second clamping plates (23) are fixedly connected to the second slide bar (30), the lower end of the rotating plate (26) is provided with a rectangular groove (31) at the second slide bar (30), and the second slide bar (30) is located in the rectangular groove (31).

2. The anti-slip hook device for hip replacement according to claim 1, characterized in that: The telescopic mechanism comprises a first straight rod (8), the first straight rod (8) being fixedly connected to the lifting device, the first straight rod (8) being slidably connected to a threaded rod (9), the threaded rod (9) being fixedly connected to the lifting device, the end of the first straight rod (8) being rotatably connected to a sleeve (10), the end of the sleeve (10) being threadedly connected to a threaded portion of the threaded rod (9).

3. The anti-slip hook device for hip replacement according to claim 2, characterized in that: The lifting device includes a first connecting plate (11), the first connecting plate (11) is fixedly connected to the end of the threaded rod (9), the side wall of the first connecting plate (11) is fixedly connected to the mounting plate (12), the side wall of the mounting plate (12) is vertically slidably connected to the inverted L-shaped plate (13), the upper end of the inverted L-shaped plate (13) is vertically penetrated by a bolt (14), the bolt (14) is threadedly connected to the inverted L-shaped plate (13), the lower end of the bolt (14) is rotatably connected to the upper end of the mounting plate (12), and the side wall of the inverted L-shaped plate (13) is fixedly connected to the hook (2).

4. The anti-slip hook device for hip replacement according to claim 1, characterized in that: The driving mechanism includes a mounting frame (32), the mounting frame (32) is fixedly connected to the upper end of the base plate (20), the mounting frame (32) is rotatably connected to a worm (33), the worm (33) is meshed with the gear ring (15), and the worm (33) is transmission-connected to a driving device, and the driving device is used to drive the worm (33) to transmit.

5. The anti-slip hook device for hip replacement according to claim 4, characterized in that: The driving device includes a mounting platform (35), the mounting platform (35) is fixedly connected to the upper end of the mounting frame (32), the upper end of the mounting platform (35) is rotatably connected to a crank (36), a first gear (37) is provided at the lower end of the mounting platform (35), the crank (36) passes through the mounting platform (35) and is fixedly connected to the first gear (37), a second gear (38) is provided on the side wall of the mounting frame (32), the worm (33) passes through the mounting frame (32) and is fixedly connected to the second gear (38), and the first gear (37) and the second gear (38) are transmission-connected via an external transmission device.

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