A multifunctional orthopedic trauma surgical device

Abstract

The present invention relates to the technical field of orthopedic surgical equipment, and discloses a multifunctional orthopedic surgical equipment, including an operating bed assembly. The operating bed assembly includes a bed base, and universal walking wheels are provided at the bottom of the bed base. A lifting column is fixedly connected to the top of the bed base, and a dragon skeleton is fixedly connected to the top of the lifting column. A bed board is installed on the top of the dragon skeleton, and both the dragon skeleton and the bed board are made of carbon fiber materials. The operating bed made of new materials eliminates the occlusion of the metal keel during intraoperative fluoroscopy of the existing operating bed, making the fluoroscopy image clearer, suitable for placing various surgical positions. The new materials greatly reduce the heavy burden brought by traditional steel materials, and further reduce the labor intensity of medical staff. It can indirectly assist or prevent over-traction caused by the traditional traction arm due to insufficient technical experience of doctors, making a simple reduction become complicated.

Description

Technical Field

[0001] The present invention relates to the technical field of orthopedic surgical equipment, and in particular to a multifunctional traumatic orthopedic surgical equipment. Background Art

[0002] In trauma orthopedic treatment, it is sometimes necessary to perform surgery on the injured part of the patient to help the patient recover. Lower limb surgery is a common orthopedic clinical surgery, and closed reduction intramedullary fixation technology is even more widely used. The premise of closed reduction is that the fracture needs to be reduced to the ideal position before surgery and maintain this good reduction state, which requires the use of a surgical traction bed.

[0003] Traction utilizes the principle of action and reaction in mechanics. Through the pulling of gravity, it is applied to the affected limb to relieve the tension and retraction of the soft tissue at the fracture and dislocation site, thereby repositioning the fracture or dislocation and achieving the purpose of treatment. Traction is divided into two categories: continuous leather traction and bone traction, which are mainly used in lower limb orthopedic surgery.

[0004] The existing operating table has obstructed perspective angles, and the bed board is heavy. After the operation is completed, it is tiring to load and unload the heavy bed board and disassemble the traction frame. The existing see-through bed cannot be disassembled and cannot be placed in special positions.

[0005] Traditional traction equipment requires manual assembly. Most traction frames on the market are not flexible enough in their joints and are not designed properly, so they can only be used for surgery. In addition, during fluoroscopy, the traction frame and the CB machine will collide in many cases. At the same time, the friction between the inner and outer traction frames of traditional traction frames is very large when pulling, which is quite laborious and limits some operations. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies in the prior art, the present invention provides a multifunctional surgical device for trauma orthopedics, which has the advantages of eliminating the obstruction of perspective images and being convenient and practical, solves the problem of obstruction of the perspective angle of the operating table, and at the same time solves the problem of heavy weight of the traditional bed board; solves the disadvantages of the existing perspective bed that cannot be disassembled and cannot be placed in special positions; solves the problems that the traditional traction equipment needs to be manually assembled, the perspective will cause collisions that affect the quality of the operation, and the friction between the inner and outer traction frames when the traction frame is pulled is very large, which is relatively laborious and has an unreasonable design, which can easily cause excessive traction; solves the problem of inflexible joints of various parts on the traditional traction frame and abandons the traditional frame and inflexible joints, which directly saves surgical time and reduces unnecessary surgical risks.

[0008] (II) Technical solution

[0009] To achieve the above object, the present invention provides the following technical solutions: A multifunctional orthopedic trauma surgical device, including an operating table assembly and a traction base assembly. The operating table assembly includes a table base, the bottom of the table base is provided with universal walking wheels, the top of the table base is fixedly connected with a lifting column, the top of the lifting column is fixedly connected with a keel frame, the top of the keel frame is equipped with a bed board, both the keel frame and the bed board are made of carbon fiber material, and the bottom of the table base is provided with a bed body counterweight;

[0010] The traction base assembly is arranged on one side of the operating table assembly. The traction base assembly includes a traction base, a hydraulic cylinder is installed inside the traction base, a handle is provided on the top of the traction base, a drawer is slidably connected inside the traction base, a first counterweight is fixedly connected inside the traction base, the bottom of the traction base is fixedly connected with foot pads and a second counterweight with the same height, and symmetrically arranged lifting universal wheels and horizontally sliding small lifting wheels are installed at the bottom of the traction base;

[0011] The telescopic end of the hydraulic cylinder is slidably connected with a parallel frame assembly. The parallel frame assembly includes a slide rail frame, a rack and a drive box are fixedly connected to the bottom of the slide rail frame, and a handle is fixedly connected to one side of the slide rail frame;

[0012] One end of the slide rail frame is equipped with a traction assembly. The traction assembly includes an arc track, the arc track is rotatably connected with the slide rail frame, limit blocks are fixedly connected to both ends of the outer side wall of the arc track, a slider is slidably connected to the outer side wall of the arc track, one side of the slider is connected with a dynamometer through a universal joint, and one end of the dynamometer is movably connected with a footrest assembly;

[0013] The footrest assembly includes a rotary connection seat, a swing connecting piece is installed at one end of the rotary connection seat, and a footrest body is movably connected to one end of the swing connecting piece.

[0014] Preferably, the bed board includes a head board, a first back board, a waist board, a second back board and a leg board.

[0015] Preferably, one side of the waist board is connected with a perineum column board, and a perineum column is fixedly connected to the top of the perineum column board.

[0016] Preferably, there are five groups of the lifting universal wheels, and the five groups of the lifting universal wheels are evenly distributed at the bottom of the traction base. The lifting universal wheels are composed of a lifting part and a wheel body. There are four horizontally sliding small lifting wheels in total, and the four horizontally sliding small lifting wheels are evenly distributed at the bottom of the second counterweight. The horizontally sliding small lifting wheels are composed of a lifting part and a wheel body.

[0017] Preferably, a driving gear is provided inside the driving box, the driving gear meshes with the rack, a worm gear and worm is meshed on the outer side wall of the driving gear, and a hand wheel is fixedly connected to the central axis of the worm gear and worm.

[0018] Preferably, a fixing bolt is fixedly connected inside the slider.

[0019] Preferably, a universal joint is provided at the connection between the slider and the tensiometer.

[0020] Preferably, a storage battery, a hydraulic lifting button, a lifting universal wheel button and a lateral sliding small lifting wheel button are provided on the traction base assembly. The storage battery can be charged. The hydraulic lifting button is used to control the hydraulic cylinder. The lifting universal wheel button is used to control the lifting universal wheel. The lateral sliding small lifting wheel button is used to control the lateral sliding small lifting wheel.

[0021] Preferably, a support assembly is clamped on one side of the perineum column plate. The support assembly includes a hinge rod. A rotating sleeve rod is provided on the outer side wall of the hinge rod. A transmission part is clamped at one end of the rotating sleeve rod. The transmission part includes a transmission seat. A lifting hand wheel is rotatably connected to one side of the transmission seat. A gear is fixedly connected to one end of the lifting hand wheel. A toothed plate is meshed on the outer side wall of the gear. A support rod is drivingly connected to the inner side wall of the transmission part. The toothed plate is fixed on the outer side wall of the support rod. A support seat is provided at the top of the support rod. A universal seat is provided at the connection between the support seat and the support rod.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the present invention provides a multifunctional orthopedic trauma surgical device, which has the following beneficial effects:

[0024] 1) The operating table made of new materials eliminates the occlusion of the metal keel during intraoperative fluoroscopy of the existing operating table, makes the fluoroscopy image clearer, is suitable for placing various surgical positions, and the new materials greatly reduce the heavy burden brought by traditional steel materials and further reduce the labor intensity of medical staff.

[0025] 2) The bed board made of new materials can significantly reduce the number of fluoroscopies of the CB machine during the operation, thereby reducing the radiation exposure harm of the fluoroscopy rays to the operator and the patient.

[0026] 3) This traction device eliminates the occlusion of the fluoroscopy image angle brought by the traditional traction arm and eliminates the unnecessary collision brought by the CB machine and the traditional traction frame.

[0027] 4) It can indirectly assist or prevent excessive traction caused by the lack of technical experience of the doctor due to the traditional traction arm, which makes a simple reduction become complicated.

[0028] 5) The device itself can be more simply passively tractioned according to the physiological direction of the human body. Whether in the process of adduction or abduction, it has invisibly conformed to the physiological direction, and there will be no excessive traction during the adduction process, resulting in the disappearance of good reduction. This allows doctors with little or rich experience to have no worries and eliminates the hidden dangers in traditional traction frames.

[0029] 6) When the device adjusts the reduction by the lifting of the hydraulic cylinder, due to the anterior angulation or posterior angulation of the fractured bone caused by the injury, the normal anterior inclination angle tending to the anatomical state can be achieved through the lifting of the hydraulic cylinder.

[0030] 7) The device is applicable to various surgical patients and has more advantages for special patients. For example, for some patients with short lower limbs and the disabled, there will be no situation where the traction arm is too long and the legs are reluctantly installed on the traction frame or unable to be tractioned.

[0031] 8) The device is equipped with a tensiometer, which can statistically analyze the forces of various fracture types and the proportion of men and women during the actual traction process through big data. It can perform precise medical treatment for the surgery, preventing doctors with insufficient experience from directly applying excessive force to the fracture during traction, complicating simple surgeries, increasing the unnecessary surgical time, and thus increasing the surgical risk of patients.

[0032] 9) The device does not need to be installed or disassembled, is easy and quick to operate, and will not have various non-optimal design problems brought by traction frames with articulated inner and outer sleeve arms. It can be pushed over to prepare for surgical reduction, bringing a very convenient operation method for doctors. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of the present invention;

[0034] Figure 2 is a schematic structural diagram of the perineum column plate in the present invention;

[0035] Figure 3 is a top view of the perineum column plate in the present invention;

[0036] Figure 4 is a schematic structural diagram of the traction device in the present invention;

[0037] Figure 5 is a bottom view of the traction device in the present invention;

[0038] Figure 6 is a partial schematic structural diagram of the parallel frame assembly in the present invention;

[0039] Figure 7 is a schematic structural diagram of the traction assembly and the footrest assembly in the present invention;

[0040] Figure 8 in the present inventionFigure 7 Enlarged view of point A;

[0041] Figure 9 Structural schematic diagram of the support component in the present invention;

[0042] Figure 10 Structural schematic diagram of the transmission part in the support component of the present invention.

[0043] In the figure: 10, operating table assembly; 11, bed base; 12, universal caster; 13, lifting column; 14, keel frame; 15, bed board; 151, head board; 152, first back board; 153, lumbar board; 154, second back board; 155, leg board; 156, perineum column board; 1561, perineum column; 16, bed body counterweight block;

[0044] 20, traction base assembly; 21, traction base; 22, hydraulic cylinder; 23, handle; 24, drawer; 25, first counterweight block; 26, foot pad; 27, second counterweight block; 28, lifting universal caster; 29, small transverse sliding lifting wheel;

[0045] 30, parallel frame assembly; 31, slide rail frame; 32, rack; 33, drive box; 331, drive gear; 332, worm and worm gear; 333, hand wheel; 34, pull handle;

[0046] 40, traction assembly; 41, arc track; 42, limit block; 43, slider; 431, fixing bolt; 44, tensiometer;

[0047] 50, footrest assembly; 51, rotary connecting seat; 52, swing connecting piece; 53, footrest body;

[0048] 60, support component; 61, articulated rod; 62, transmission part; 621, transmission seat; 622, lifting hand wheel; 623, gear; 624, toothed plate; 63, support rod; 64, support seat; 65, universal seat; 66, rotating sleeve rod. Detailed implementation manners

[0049] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0050] Embodiment 1

[0051] A multifunctional orthopedic trauma surgical device includes an operating bed assembly 10 and a traction base assembly 20. The operating bed assembly 10 includes a bed base 11. Universal walking wheels 12 are provided at the bottom of the bed base 11. A lifting column 13 is fixedly connected to the top of the bed base 11. A dragon skeleton 14 is fixedly connected to the top end of the lifting column 13. A bed board 15 is installed on the top of the dragon skeleton 14. Both the dragon skeleton 14 and the bed board 15 are made of carbon fiber material. A bed body counterweight 16 is provided at the bottom of the bed base 11. By setting the bed body counterweight 16, the bed body is not prone to movement during traction;

[0052] The traction base assembly 20 is arranged on one side of the operating bed assembly 10. The traction base assembly 20 includes a traction base 21. A hydraulic cylinder 22 is installed inside the traction base 21. A handle 23 is provided at the top of the traction base 21. A drawer 24 is slidably connected inside the traction base 21. A first counterweight 25 is fixedly connected inside the traction base 21. Pedestals 26 and a second counterweight 27 with the same height are fixedly connected to the bottom of the traction base 21. Symmetrically arranged lifting universal wheels 28 and lateral sliding small lifting wheels 29 are installed at the bottom of the traction base 21;

[0053] The telescopic end of the hydraulic cylinder 22 is slidably connected to a parallel frame assembly 30. The parallel frame assembly 30 includes a slide rail frame 31. A rack 32 and a drive box 33 are fixedly connected to the bottom of the slide rail frame 31. A handle 34 is fixedly connected to one side of the slide rail frame 31;

[0054] A traction assembly 40 is installed at one end of the slide rail frame 31. The traction assembly 40 includes an arc track 41. The arc track 41 is rotatably connected to the slide rail frame 31. Limit blocks 42 are fixedly connected to both ends of the outer side wall of the arc track 41. A slider 43 is slidably connected to the outer side wall of the arc track 41. One side of the slider 43 is connected to a dynamometer 44 through a universal joint. One end of the dynamometer 44 is movably connected to a footrest assembly 50;

[0055] The footrest assembly 50 includes a rotary connection seat 51. A swing connecting piece 52 is installed at one end of the rotary connection seat 51. One end of the swing connecting piece 52 is movably connected to a footrest body 53.

[0056] In this embodiment, specifically, the bed board 15 includes a head board 151, a first back board 152, a waist board 153, a second back board 154, and a leg board 155.

[0057] In this embodiment, specifically, a perineum column board 156 is connected to one side of the waist board 153. A perineum column 1561 is fixedly connected to the top of the perineum column board 156.

[0058] In this embodiment, specifically, there are a total of five sets of lifting universal wheels 28, and the five sets of lifting universal wheels 28 are evenly distributed at the bottom of the towing base 21. The lifting universal wheels 28 are composed of a lifting part and a wheel body. There are a total of four transverse sliding small lifting wheels 29, and the four transverse sliding small lifting wheels 29 are evenly distributed at the bottom of the counterweight block two 27. The transverse sliding small lifting wheels 29 are composed of a lifting part and a wheel body.

[0059] In this embodiment, specifically, a driving gear 331 is provided inside the driving box 33. The driving gear 331 meshes with the rack 32, and a worm and worm gear 332 is meshed with the outer side wall of the driving gear 331. A hand wheel 333 is fixedly connected to the central axis of the worm and worm gear 332.

[0060] In this embodiment, specifically, a fixing bolt 431 is fixedly connected inside the slider 43.

[0061] In this embodiment, specifically, a universal joint is provided at the connection between the slider 43 and the tensiometer 44.

[0062] In this embodiment, specifically, a storage battery, a hydraulic lifting button, a lifting universal wheel button, and a transverse sliding small lifting wheel button are provided on the towing base assembly 20. The storage battery can be charged. The hydraulic lifting button is used to control the hydraulic cylinder 22. The lifting universal wheel button is used to control the lifting universal wheels 28. The transverse sliding small lifting wheel button is used to control the transverse sliding small lifting wheels 29.

[0063] Refer to Figures 1-10 , during use, extend the universal walking wheels 12 out of the bed base 11 so that the entire bed body can move in any direction. Move the bed body to a suitable position, and then adjust the height of the lifting column 13 so that the bed body reaches a suitable height. Finally, according to the patient's surgical condition, select to replace the leg plate 154 or the perineum column plate 155. During the operation, since both the bed board and the keel frame 14 are made of carbon fiber material, the entire bed body can be fluoroscoped;

[0064] When performing skeletal traction, the perineum column plate 156 is inserted into the lumbar plate 153, and then the lifting wheel 28 is extended through the lifting wheel button, so that the lifting wheel 28 extends outside the traction base 21, enabling the entire traction device to be moved. After moving the entire traction device to the operation area, the lifting wheel 28 is retracted through the lifting wheel button, so that the first counterweight 25 and the second counterweight 27 contact the ground, making the entire traction device not easily movable; then the arc track is rotated to the horizontal position by unlocking the rotating bolt and locking the rotating bolt; then the traction device is lifted to the same height as the operating table through the hydraulic lifting button. At the same time, the footrest body 53 on the traction device is connected to the patient's feet, and the swinging member 52 is adjusted to make the feet fit the footrest body. After the connection is completed; the lifting universal wheel 28 is unlocked to enable the device to slide, and then the device is pulled or translated by pulling the handle 23 or the handle 34, so that the patient's leg is pulled, adducted, or abducted, achieving the purpose of traction, adduction, and abduction. Then the lifting universal wheel 28 is locked to roughly reset the fracture; depending on the reset situation, the lateral sliding small lifting wheel 29 is unlocked and locked through the lateral sliding small lifting wheel button to perform small adduction and abduction movements to further reset the fracture; depending on the reset situation, the fixed bolt 431 is unlocked and locked to slide the slider 43, so that the slider 43 slides along the arc track 41 to perform minor adduction and abduction movements to further reset the fracture; depending on the reset situation, the rotating base 51 is unlocked to perform internal rotation or external rotation movements on the patient's leg to further reset the fracture; depending on the reset situation, the handwheel 333 is rotated manually, so that the handwheel 333 drives the worm and worm gear 332 to rotate, the worm and worm gear 332 drives the driving gear 331 to rotate, so that the driving gear 331 drives the rack 32 to move horizontally, and the slide rail frame 31 on the rack 32 can move horizontally accordingly to perform small-scale traction and scaling operations. Due to the structure of the worm and worm gear 332, when the entire device moves horizontally, the purpose of self-locking braking can be achieved, so that the slide rail frame 31 can only move through the handwheel 333 and will not move by itself; at the same time, depending on the reset situation, it is considered whether to use the support assembly 60 to support the patient's fracture site to further reset the fracture. In addition, a universal joint is provided on the traction assembly 40, so that the feet on the footrest body 52 can rotate during traction, so that no matter what the direction of the traction device is, the human leg can conform to the physiological direction. In addition, the dynamometer 44 provided on the traction assembly 40 can detect the traction force, which is convenient for medical staff to observe.

[0065] Embodiment 2

[0066] One side of the perineum column plate 156 is clamped with a support assembly 60. The support assembly 60 includes a hinge rod 61. A rotating sleeve rod 66 is arranged on the outer side wall of the hinge rod 61. One end of the rotating sleeve rod 66 is clamped with a transmission part 62. The transmission part 62 includes a transmission seat 621. One side of the transmission seat 621 is rotatably connected with a lifting handwheel 622. One end of the lifting handwheel 622 is fixedly connected with a gear 623. A toothed plate 624 is engaged with the outer side wall of the gear 623. The inner side wall of the transmission part 62 is drivingly connected with a support rod 63. The toothed plate 624 is fixed on the outer side wall of the support rod 63. A support seat 64 is arranged at the top of the support rod 63. A universal joint 65 is arranged at the connection between the support seat 64 and the support rod 63.

[0067] Referring to Figures 1-9 , by inserting the support assembly 60 into the keel on the perineum column plate 156, the support assembly 60 supports the legs of a person, and by adjusting the hinge rod 61, the angle of the support seat 64 can be adjusted. By rotating the lifting handwheel 622, the lifting handwheel 622 drives the gear 623 to rotate, and the gear 623 drives the toothed plate 624 to rise or fall, so that the support rod 63 on the toothed plate 624 drives the support seat 64 to rise or fall, realizing the height adjustment of the support seat 64, which is convenient for the operator to assist in reducing the fracture end.

[0068] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional orthopedic trauma surgical device, comprising an operating table assembly (10) and a traction base assembly (20). It is characterized in that: The operating table assembly (10) includes a bed base (11), the bottom of the bed base (11) is provided with universal walking wheels (12), the top of the bed base (11) is fixedly connected with a lifting column (13), the top of the lifting column (13) is fixedly connected with a keel frame (14), the top of the keel frame (14) is provided with a bed board (15), both the keel frame (14) and the bed board (15) are made of carbon fiber material, and the bottom of the bed base (11) is provided with a bed body counterweight block (16); The bed board (15) includes a head board (151), a first back board (152), a waist board (153), a second back board (154) and a leg board (155). The traction base assembly (20) is arranged on one side of the operating table assembly (10), the traction base assembly (20) includes a traction base (21), a hydraulic cylinder (22) is installed inside the traction base (21), a handle (23) is provided on the top of the traction base (21), a drawer (24) is slidably connected inside the traction base (21), a first counterweight block (25) is fixedly connected inside the traction base (21), the bottom of the traction base (21) is fixedly connected with foot pads (26) and a second counterweight block (27) with the same height, and symmetrically arranged lifting universal wheels (28) and transverse sliding small lifting wheels (29) are installed at the bottom of the traction base (21). There are five groups of the lifting universal wheels (28) in total, and the five groups of the lifting universal wheels (28) are evenly distributed at the bottom of the traction base (21). The lifting universal wheel (28) is composed of a lifting part and a wheel body. There are four transverse sliding small lifting wheels (29) in total, and the four transverse sliding small lifting wheels (29) are evenly distributed at the bottom of the second counterweight block (27). The transverse sliding small lifting wheel (29) is composed of a lifting part and a wheel body. The telescopic end of the hydraulic cylinder (22) is slidably connected with a parallel frame assembly (30), the parallel frame assembly (30) includes a slide rail frame (31), a rack (32) and a drive box (33) are fixedly connected to the bottom of the slide rail frame (31), and a handle (34) is fixedly connected to one side of the slide rail frame (31). One end of the slide rail frame (31) is provided with a traction assembly (40), the traction assembly (40) includes an arc track (41), the arc track (41) is rotatably connected with the slide rail frame (31), limiting blocks (42) are fixedly connected to both ends of the outer side wall of the arc track (41), a slider (43) is slidably connected to the outer side wall of the arc track (41), one side of the slider (43) is connected with a tensiometer (44) through a universal joint, and one end of the tensiometer (44) is movably connected with a footrest assembly (50). The tripod assembly (50) includes a rotary connection base (51), one end of the rotary connection base (51) is provided with a swing connection member (52), and one end of the swing connection member (52) is movably connected to a tripod body (53).

2. The multifunctional surgical device for orthopaedic trauma according to claim 1, characterized in that: One side of the lumbar plate (153) is connected with a perineum column plate (156), and the top of the perineum column plate (156) is fixedly connected with a perineum column (1561).

3. The multifunctional surgical device for orthopaedic trauma according to claim 1, characterized in that: A driving gear (331) is arranged inside the driving box (33), the driving gear (331) meshes with the rack (32), a worm and worm gear (332) is meshed on the outer side wall of the driving gear (331), and a hand wheel (333) is fixedly connected to the central axis of the worm and worm gear (332).

4. The multifunctional surgical device for orthopaedic trauma according to claim 1, characterized in that: A fixing bolt (431) is fixedly connected inside the slider (43).

5. The multifunctional surgical device for orthopaedic trauma according to claim 1, characterized in that: A universal joint is provided at the connection between the slider (43) and the tensiometer (44).

6. The multifunctional surgical device for orthopaedic trauma according to claim 1, characterized in that: A storage battery, a hydraulic lifting button, a lifting universal wheel button and a lateral sliding small lifting wheel button are provided on the traction base assembly (20), the storage battery can be charged, the hydraulic lifting button is used to control the hydraulic cylinder (22), the lifting universal wheel button is used to control the lifting universal wheel (28), and the lateral sliding small lifting wheel button is used to control the lateral sliding small lifting wheel (29).

7. The multifunctional surgical device for orthopaedic trauma according to claim 2, characterized in that: A support assembly (60) is clamped on one side of the perineum column plate (156), the support assembly (60) includes a hinge rod (61), a rotary sleeve rod (66) is arranged on the outer side wall of the hinge rod (61), a transmission part (62) is clamped at one end of the rotary sleeve rod (66), the transmission part (62) includes a transmission seat (621), a lifting hand wheel (622) is rotatably connected to one side of the transmission seat (621), a gear (623) is fixedly connected to one end of the lifting hand wheel (622), a toothed plate (624) is meshed on the outer side wall of the gear (623), a support rod (63) is drivingly connected to the inner side wall of the transmission part (62), the toothed plate (624) is fixed on the outer side wall of the support rod (63), a support seat (64) is arranged at the top of the support rod (63), and a universal seat (65) is arranged at the connection between the support seat (64) and the support rod (63).

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