Leg bone dissection operation traction device

Abstract

The invention belongs to the technical field of orthopedic medical equipment, and particularly relates to a leg bone dissection operation traction device which comprises a bed frame, a frame adjusting device is fixedly mounted in the middle of the inner wall of the bed frame, a supporting frame is arranged at the top of the frame adjusting device, the frame adjusting device is used for driving the supporting frame to adjust the position, and band penetrating openings are symmetrically formed in the inner wall of the supporting frame. Portal frames are symmetrically arranged on the top of the bed frame, two motors are symmetrically and fixedly installed on the inner wall of the bed frame and arranged at the four corners of the inner wall of the bed frame respectively, and the output ends of the two motors are fixedly connected with one sides of the two portal frames respectively. A telescopic air cylinder drives a tooth frame to push a gear to rotate, when the gear rotates, a tooth rod is driven to move through meshing transmission, so that a push plate is pulled to move, a weight adjuster can be pushed, a skin supporting block is driven to move towards the lower side, and the skin supporting block supports and rags skin and flesh tissue to different degrees through the height of leg bone traction during leg bone traction; and the opening diameter of the supporting and raking device can be automatically adjusted.

Description

Technical Field

[0001] The invention belongs to the technical field of orthopedic medical equipment, in particular to a traction device for leg bone stripping surgery. Background Art

[0002] Traction is a surgical technique used to treat fractures, dislocations or other orthopedic problems. During the operation, the doctor will use specific instruments and methods to achieve traction on the bones of the leg to achieve the purpose of reduction, fixation or correction of deformity.

[0003] A patent application with publication number CN118161325A discloses an orthopedic reduction and fixation orthopedic device, which can fix limbs of different thicknesses and lengths of patients, and can also fix multiple limbs of patients at the same time. The adjustment of the applicable size between splints and the adjustment of the applicable spacing between splint components both have a self-locking effect, and the fixation effect is not affected after repeated use of the device. While increasing the applicability of the device, it can also improve the service life of the device, effectively reduce medical costs, and improve the comfort of patients.

[0004] During the leg bone stripping operation, the soft tissue and periosteum on the surface of the femur need to be stripped. A traction device is usually used to traction the leg bone to facilitate the doctor's stripping. The femur needs to be slightly lifted during traction. At this time, the width of the wound needs to be adjusted to facilitate the slight lifting and traction of the femur. Due to the different traction heights, the doctor needs to frequently adjust the size of the wound to prevent the leg bone from being interfered with by the skin and flesh during traction, which wastes time and consumes the doctor's physical strength.

[0005] To this end, the present invention provides a traction device for leg bone stripping surgery. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a leg bone stripping surgery traction device described in the present invention includes a bed frame, a frame adjustment device is fixedly installed in the middle position of the inner wall of the bed frame, a support frame is arranged on the top of the frame adjustment device, the frame adjustment device is used to drive the support frame to adjust the position, the inner wall of the support frame is symmetrically provided with belt threading openings, a gantry frame is symmetrically arranged on the top of the bed frame, two groups of motors are symmetrically fixedly installed on the inner wall of the bed frame, the two groups of motors are respectively arranged at the four corners of the inner wall of the bed frame, the output ends of the two groups of motors are respectively fixedly connected to one side of the two gantries, and the inner wall of the two gantries is symmetrically provided with a belt threading opening. A cutting support assembly is provided at each position, the cutting support assembly includes a support plate, and the cutting support assembly is used to drive the support plate to support the two ends of the wound when the wound is cut. The two cutting support assemblies are both placed directly above the support frame, and a rectangular box is symmetrically fixedly installed on the top of the bed frame. A lifting unit is provided inside the two rectangular boxes, and the lifting unit includes a needle connecting shaft rod, and a bone-penetrating needle is provided between the needle connecting shaft rods. The bone-penetrating needle is used to perform bone traction on the leg bone, and the lifting unit is used to drive the needle connecting shaft rod to pull the leg bone to adjust the spacing between the skin and flesh openings by the traction height; During the operation, the patient's legs are first placed on the brace, and straps are used to pass them through the strap insertion openings. The patient's legs are then tied to the brace using the straps. After the binding and fixation is completed, the brace is driven to move by controlling the frame adjustment device to adjust the position of the patient's legs. When the leg position is adjusted to be flush with the cutting and bracing assembly, the frame adjustment device is continued to be controlled to slowly adjust the height of the brace. When the cutting and bracing assembly enters the leg muscles, the movement of the frame adjustment device is stopped. At this time, the control motor drives the cutting and bracing assembly to move through the gantry, so that the cutting and bracing assembly slides in the leg muscles to open an incision. The doctor observes the patient's leg condition through operation, thereby controlling the cutting and bracing assembly to cut a suitable incision length, and then drives the brace plate to The two ends of the wound are propped up to facilitate the subsequent stripping operation. The bone needle is then taken out and the bone needle is penetrated into one end of the femur using the penetration fixation method. The two ends of the bone needle are fixed to the needle receiving shaft through fasteners. At this point, the doctor can use surgical instruments to strip the soft tissue and periosteum on the surface of the femur and perform the stripping operation. When the leg bone needs to be stripped and pulled, the needle receiving shaft is driven by the lifting unit to move and pull the leg bone. While pulling, the lifting unit automatically adjusts the support distance between the skin and flesh openings according to the traction height, thereby preventing the skin and flesh from interfering with the leg bone when it is pulled, affecting the traction effect. At the same time, it can also greatly avoid damaging the tissue structure on the surface of the leg bone due to friction between the skin and flesh when the leg bone is pulled.

[0008] Preferably, the cutting support assembly also includes a hanging plate, the top of which is fixedly installed in the middle position of the inner wall of the gantry, and a cutter is fixedly installed at the bottom of the hanging plate. When the control motor drives the gantry to move, the cutter fixed at the bottom of the hanging plate cuts the skin of the leg bone. By continuously driving the gantry to move by the motor, the cutter can continuously cut the skin of the leg bone, thereby completing the function of cutting and peeling the incision. By the doctor judging the length of the patient's leg bone and controlling the motor to drive the gantry to move to different lengths, incisions of different lengths on the skin of the leg bone can be cut.

[0009] Preferably, an outer screw hole is provided on the inner wall of the hanging plate, and a screw handle is rotatably connected to the outer wall of the hanging plate. An inner screw hole is provided on the inner wall of the screw handle, and the inner wall of the inner screw hole is threadedly connected to the inner wall of the outer screw hole. There are two support plates, which are symmetrically arranged on both sides of the cutter. The top ends of the two support plates are rotatably connected to the bottom of the hanging plate, and the inner wall of the hanging plate is symmetrically slidably connected with hinges, one end of the two hinges is respectively hinged to the inner walls of the two support plates, the top ends of the two support plates are placed at the bottom of the screw handle, and a pressure spring is arranged between the bottom of the top ends of the two support plates and the top of the hanging plate. When the cutter is completed, the screw handle on the hanging plate is rotated, and the screw handle is rotated The inner thread of the inner wall of the screw handle is threadedly rotated at the outer thread of the hanging plate. When rotating, the screw handle can move downward from the hanging plate, and the bottom of the screw handle will squeeze and push the hinge downward. When the hinge moves downward, the support plate can be pushed to open from both sides of the cutter through the hinge transmission, thereby supporting the incision end and achieving the effect of supporting the skin and flesh at the incision end. The setting of the pressure spring is to prevent the screw handle from moving downward due to excessive speed, resulting in excessive opening angle of the two support plates and breaking the skin and flesh tissue, so as to avoid damage to the skin and flesh tissue. The outer support surfaces of the two support plates are arc support surfaces. Compared with the traditional rectangular support surfaces, the loss of skin and flesh tissue can be greatly avoided during support.

[0010] Preferably, an inclined block plate is fixedly installed on the inner wall of the square box, and a slide seat is symmetrically slidably connected to the inner wall of the inclined block plate, and a connecting rod seat is arranged inside the two slide seats, and a supporting leather block is fixedly installed on one end of the two connecting rod seats, and a weight adjuster is fixedly installed on the bottom of the two slide seats, and an arm rod is symmetrically slidably connected to the inner wall of the inclined block plate on one side of the inner wall of the inclined block plate, and a return spring is arranged between one end of the two arm rods and the inner wall of the inclined block plate. When the two supporting plates are opened from both sides of the cutter to complete the supporting of the incision end, the doctor judges the patient's weight and injury to select a suitable traction weight. When the traction weight is determined, the weight balance is achieved by controlling the weight adjuster. When the weight is adjusted When the adjustment of the device is completed, the weight adjuster will pull the slide from high to low in the inclined block plate due to its weight, and the outer wall of the weight adjuster will squeeze the reset spring to push the arm rod to move. When sliding, the slide drives the two supporting skin blocks to move backward through the connecting rod seat. When the two supporting skin blocks move, the two supporting skin blocks will push the skin and flesh tissue on both sides of the incision to both sides, opening the incision, making it easier for the doctor to peel off the soft tissue and periosteum on the surface of the femur, playing the role of supporting the incision. When the peeling operation is over, the mass of the weight adjuster is adjusted to zero, and the weight adjuster will be reset under the thrust of the reset spring, playing the role of returning the supporting skin block.

[0011] Preferably, the inner wall of the slide seat is threadedly connected with a seat shift rod, the bottom of the connecting rod seat is slidably connected to the inner wall of the slide seat, one end of the seat shift rod is placed on the inner wall of the connecting rod seat and is rotatably connected to the inner wall of the connecting rod seat, and the other end of the seat shift rod is fixedly installed with a turning handle, which is placed on the outside of the slide seat. By judging the size of the incision required for the patient, the turning handle is turned to drive the seat shift rod to rotate, and the seat shift rod drives the connecting rod seat to move in the slide when rotating, so that the position of the skin support block on one side of the support frame can be adjusted, and the position adjustment of the four skin support blocks can be completed by rotating the four turning handles, thereby adjusting the support mouth distance.

[0012] Preferably, the lifting and adjusting unit also includes a telescopic cylinder, which is fixedly installed inside the inclined block plate, and a vertical frame is fixedly installed on the top of the torque box. The outer wall of the needle receiving shaft is slidably connected to the inner wall of the vertical frame, and the outer wall of the needle receiving shaft is fixedly connected to a push frame. One output end of the telescopic cylinder is fixedly connected to the bottom of the push frame, and the outer wall of the vertical frame is slidably connected to the inner wall of the push frame. When leg bone traction is required, the push frame is driven upward by the telescopic cylinder, and the push frame drives the needle receiving shaft to slide in the vertical frame when it moves upward. Since the bone penetration needle is fixed between the two needle receiving shafts using a fastener, when the needle receiving shaft moves, it drives the leg bone to be pulled and lifted, thereby traction of the leg bone is achieved, which plays a role in traction of the leg bone during surgery.

[0013] Preferably, a push plate is slidably connected to the inner wall of the torque box, a compound leaf spring is arranged between one side of the push plate and the inner wall of the torque box, the outer wall of the compound leaf spring is slidably connected to the outer walls of the two weight adjusters, the other output end of the telescopic cylinder is fixedly installed with a gear rack, the inner wall of the torque box is rotatably connected with a gear, a gear rod is fixedly installed at the bottom of the push plate, the teeth on the gear rod and the gear rack can mesh with the teeth on the gear, when the telescopic cylinder drives the push to pull, the telescopic cylinder also drives the gear rack to move, the gear rack drives the gear to rotate when it moves, and the gear rotates through the meshing transmission to drive the gear rod to move, the gear rod will pull the push plate to move, and the push plate can push the weight adjuster to squeeze The reset spring moves, thereby driving the supporting skin block to move sideways and downward, so that when the leg bone is pulled, the supporting skin block can support the skin and flesh tissue to different degrees according to the height of the leg bone traction, thereby automatically adjusting the supporting diameter. Since the higher the height of the leg bone traction, the larger the supporting diameter of the skin and flesh tissue will be, on the one hand, supporting the skin and flesh tissue to different degrees can prevent the tissue inside the leg bone from being affected by the skin and flesh during traction, causing friction and damaging the tissue on the leg bone. On the other hand, through automatic adjustment, the doctor's frequent adjustment of the supporting diameter can be reduced, allowing the doctor to focus more on the stripping operation, saving the doctor's physical strength while also speeding up the operation.

[0014] Preferably, cover baffles are symmetrically fixedly installed on the top of the matrix box, and the two cover baffles are respectively placed on the outside of the two connecting rod seats. During the operation, the setting of the cover baffles is convenient for placing the surgical instruments needed for stripping the leg bones, so that the doctor can perform the operation more smoothly. On the other hand, it is convenient for the doctor to place both hands, relieve some of the doctor's pressure and save physical strength.

[0015] Preferably, a limited pulling block is fixedly installed on the top of the torque box, and a limited pressure plate is fixedly installed on the inner wall of the cover baffle, the limited pulling block is placed on the side and lower part of the leather supporting block, the inner wall of the leather supporting block is slidably connected with a strip plate, the top of the strip plate is fixedly installed with a frame plate, and the top of the frame plate is fixedly installed with a pressure plate, and a plurality of return plate springs are arranged between the bottom of the pressure plate and the frame plate, and the bottom end of one side of the pressure plate is slidably connected with the inner wall of the leather supporting block, and a skin pulling opening is opened on the inner wall of the leather supporting block, and the skin pulling opening is arc-shaped, and the top of the pressure plate can be slidably connected with the bottom of the pressure limiting plate, and when the leather supporting block supports and pulls the skin and flesh tissue, the skin and flesh tissue will be stuck into the skin pulling opening on one side of the leather supporting block, and then pulled by the weight adjuster, the leather supporting block will pull the skin and flesh tissue to move, and through the limited pulling block When the leg bone is pulled, the supporting skin block moves backwards. When the leg bone is pulled, the pressure limiting plate is set. When the supporting skin block moves, the pressure plate on the top of the supporting skin block will be pressed by the pressure limiting plate and continue to move downward. When the pressure plate moves downward, the return plate spring is squeezed to drive the frame plate to move. When the frame plate moves, the strip plate will slide out from the inner wall of the supporting skin block for torque adjustment, thereby cooperating with the supporting skin block to form a complete pulling block, thereby preventing the skin and flesh tissue from slipping out of the skin pulling mouth due to the small contact area with the skin and flesh tissue, thereby playing an anti-slip effect.

[0016] Preferably, a placing tray is fixedly installed on one side of the top of the bed frame. The placing tray is higher than the height of the two gantries. A rectangular groove is provided on the inner wall of the placing tray, which can be used to place medical instruments used in the peeling operation. Before the operation, the surgical instruments used in the operation are placed one by one on the placing tray. During the operation, since the placement position of the placing tray is opposite to the doctor's operating position, it is convenient for the doctor to take and place the surgical instruments, thereby playing the role of placing the surgical instruments.

[0017] The beneficial effects of the present invention are as follows: 1. The traction device for leg bone stripping surgery described in the present invention drives the leg bone to be pulled by a telescopic cylinder, and the telescopic cylinder drives the gear rack to push the gear to rotate. When the gear rotates, the gear rod is driven to move through the meshing transmission, thereby pulling the push plate to move, and the weight adjuster can be pushed, thereby driving the supporting skin block to move laterally and downward, so that when the leg bone is pulled, the supporting skin block can support and scrape the skin and flesh tissue to different degrees according to the height of the leg bone traction, so as to automatically adjust the diameter of the supporting scraper. On the one hand, supporting and scraping the skin and flesh tissue to different degrees can prevent the tissue inside the leg bone from being affected by the skin and flesh during traction, thereby damaging the tissue on the leg bone. On the other hand, through automatic adjustment, the doctor's frequent adjustment of the size of the supporting scraper mouth can be reduced, so that the doctor can be more focused on the stripping surgery, saving the doctor's physical strength while also speeding up the surgery.

[0018] 2. The traction device for leg bone stripping surgery described in the present invention, when the skin and flesh tissues are stretched and pulled by the skin support block, the skin and flesh tissues will be stuck in the skin-lifting opening on one side of the skin support block, and then the skin support block will pull the skin and flesh tissues to move through the traction of the weight adjuster, and the skin support block can realize the eversion of the skin and flesh tissues through the limiting position of the limiting pulling block. Because the leg bone will be lifted during traction, the stretching opening of the skin and flesh tissues on both sides will become larger, and the contact area between the other side of the skin support block and the skin and flesh tissues will be reduced. When the leg bone is pulled, the skin supporting block moves backward. During the movement, the pressure limiting plate is set. When the skin supporting block moves, the pressure plate on the top of the skin supporting block will be pressed by the pressure limiting plate and continue to move downward. When the pressure plate moves downward, the return plate spring is squeezed to drive the frame plate to move. When the frame plate moves, the strip plate will slide out from the inner wall of the skin supporting block and adjust the torque, thereby cooperating with the skin supporting block to form a complete pulling block, thereby preventing the skin and flesh tissue from slipping out of the skin pulling mouth due to the small contact area with the skin and flesh tissue, thereby playing an anti-slip effect.

[0019] 3. The traction device for leg bone stripping surgery described in the present invention rotates the screw handle on the hanging plate. When the screw handle is rotated, the inner screw hole on the inner wall of the screw handle is threadedly rotated at the outer screw hole on the hanging plate, and the screw handle can move downward from the hanging plate. The bottom of the screw handle will squeeze the hinge to move downward, and the support plates can be pushed to open from both sides of the cutter through the hinge transmission, thereby supporting the incision end and achieving the effect of supporting the skin and flesh at the incision end. The setting of the pressure spring is to prevent the screw handle from moving downward at an excessively high speed, thereby causing the two support plates to open at an excessively large angle and breaking the skin and flesh tissue, thereby avoiding damage to the skin and flesh tissue. The outer support surfaces of the two support plates are arc support surfaces. Compared with traditional rectangular support surfaces, the loss of skin and flesh tissue can be greatly avoided during support.

[0020] 4. The traction device for leg bone stripping surgery described in the present invention determines the size of the incision that the patient needs to make, rotates the handle to drive the shifting rod to rotate, and the shifting rod drives the connecting rod seat to move in the sliding seat when rotating, so that the position of the skin support block on one side of the support frame can be adjusted. By rotating four handles, the position of the four skin support blocks can be adjusted, which plays a role in adjusting the support opening distance.

[0021] 5. The traction device for leg bone stripping surgery described in the present invention, through the setting of the cover baffle during the operation, on the one hand, is convenient for placing the surgical instruments needed for stripping the leg bone, so that the doctor can perform the operation more smoothly; on the other hand, it is convenient for the doctor to place both hands, thereby reducing some of the doctor's pressure and saving physical strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is the main figure of the present invention; Figure 2 It is an overall diagram of the present invention; Figure 3 It is a structural schematic diagram of the support frame in the present invention; Figure 4 It is a structural schematic diagram of the belt threading port in the present invention; Figure 5 It is a structural schematic diagram of the screw handle in the present invention; Figure 6 It is a structural schematic diagram of the hinge in the present invention; Figure 7 It is a schematic diagram of the structure of the bone piercing needle in the present invention; Figure 8 It is a structural schematic diagram of the pull-limiting block in the present invention; Fig. 9 It is a structural schematic diagram of the inclined block plate in the present invention; Fig.10 It is a structural schematic diagram of the push plate in the present invention; Fig.11 It is a schematic diagram of the structure of the gear rod in the present invention; Fig.12 It is a structural schematic diagram of the leather block support in the present invention; Fig.13 It is a schematic diagram of the structure of the strip board in the present invention; Fig.14 It is a structural schematic diagram of the seat shifting rod in the present invention.

[0024] In the figure: 1, bed frame; 2, placing plate; 3, torque box; 31, cover baffle; 3101, pressure limit plate; 32, needle shaft; 3201, vertical frame; 3202, push frame; 33, pull limit block; 34, leather support block; 3401, pressure plate; 3402, return plate spring; 3403, frame plate; 3404, strip plate; 3405, leather pull mouth; 35, telescopic cylinder; 3501, gear; 3502, gear rod; 3503, gear frame; 36, weight adjuster; 37, push plate; 3 701, compound leaf spring; 38, slide seat; 39, inclined plate; 3901, return spring; 3902, arm; 4, support frame; 41, belt threading port; 5, gantry; 51, cutting support assembly; 501, hanging plate; 502, cutter; 503, support plate; 504, screw handle; 505, pressure spring; 506, hinge; 507, inner screw mouth; 508, outer screw mouth; 52, motor; 6, bone piercing needle; 7, frame adjustment device; 8, connecting rod seat; 9, seat shifting rod; 10, turning handle. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] like Figures 1 to 14 As shown, a traction device for leg bone stripping surgery described in an embodiment of the present invention includes a bed frame 1, a frame adjustment device 7 is fixedly installed in the middle position of the inner wall of the bed frame 1, a support frame 4 is arranged on the top of the frame adjustment device 7, the frame adjustment device 7 is used to drive the support frame 4 to adjust the position, the inner wall of the support frame 4 is symmetrically provided with a belt threading opening 41, a gantry frame 5 is symmetrically arranged on the top of the bed frame 1, two groups of motors 52 are symmetrically fixedly installed on the inner wall of the bed frame 1, the two groups of motors 52 are respectively arranged at the four corners of the inner wall of the bed frame 1, the output ends of the two groups of motors 52 are respectively fixedly connected to one side of the two gantries 5, and the middle position of the inner wall of the two gantries 5 is provided with a cutting support group Part 51, the cutting support assembly 51 includes a support plate 503, and the cutting support assembly 51 is used to drive the support plate 503 to support the two ends of the wound when the wound is cut. The setting positions of the two cutting support assemblies 51 are both placed directly above the support frame 4. The top of the bed frame 1 is symmetrically fixed with a rectangular box 3, and the interiors of the two rectangular boxes 3 are both provided with a lifting unit. The lifting unit includes a needle connecting shaft rod 32, and a bone-piercing needle 6 is arranged between the needle connecting shaft rods 32. The bone-piercing needle 6 is used to perform bone traction on the leg bone. The lifting unit is used to drive the needle connecting shaft rod 32 to pull the leg bone to adjust the support spacing between the skin and flesh openings by the traction height; Due to the different traction heights, the doctor needs to frequently adjust the size of the wound during the stripping operation to prevent the skin and flesh from interfering with the leg bone when it is being pulled, which wastes time and consumes the doctor's physical strength. During the operation, the patient's legs are first placed on the support frame 4, and the straps are used to pass through the strapping openings 41, and then the patient's legs are tied to the support frame 4 using the straps. After the binding and fixing is completed, the support frame 4 is driven to move by controlling the frame adjustment device 7 to adjust the position of the patient's legs. When the leg position is adjusted to be flush with the cutting support assembly 51, the frame adjustment device 7 is continuously controlled to slowly adjust the height of the support frame 4. When the cutting support assembly 51 enters the leg muscle, the movement of the frame adjustment device 7 is stopped. At this time, the control motor 52 drives the cutting support assembly 51 to move through the gantry 5, so that the cutting The support component 51 slides in the leg muscle to make an incision. The doctor observes the patient's leg condition through operation, thereby controlling the cutting and supporting component 51 to cut a suitable incision length. The cutting and supporting component 51 then drives the supporting plate 503 to support both ends of the wound to facilitate the subsequent stripping operation. The bone-penetrating needle 6 is then taken out and the bone-penetrating needle 6 is penetrated into one end of the femur by the penetration and fixation method. The two ends of the bone-penetrating needle 6 are fixed to the needle shaft 32 by the fasteners. At this point, the doctor can use surgical instruments to strip the soft tissue and periosteum on the surface of the femur and perform the stripping operation. When the leg bone needs to be repaired, During stripping and traction, the needle receiving shaft 32 is driven by the lifting unit to move and traction the leg bone. During traction, the lifting unit automatically adjusts the spacing between the skin and flesh openings according to the traction height, thereby preventing the skin and flesh from interfering with the leg bone when it is being pulled, thereby affecting the traction effect. At the same time, it can also greatly avoid damaging the tissue structure on the surface of the leg bone due to friction between the skin and flesh when the leg bone is being pulled, thereby solving the problem in the prior art that the doctor needs to frequently adjust the size of the wound opening during stripping surgery due to different traction heights, thereby preventing the skin and flesh from interfering with the leg bone when it is being pulled. This problem wastes time and also consumes a lot of physical strength of the doctor. It should be noted here that the adjustment device 7 includes two parts, namely, a lifting adjustment mechanism and a lateral adjustment mechanism. Since the two adjustment mechanisms are existing technologies, they are not represented in this solution. When the patient's leg bones are moved, two different adjustment mechanisms can be used to cooperate with each other to adjust the position of the leg bones, so that the leg bones are placed between the two rectangular boxes 3, which is convenient for subsequent doctors to perform stripping surgery on the leg bones. The initial positions of the two gantries 5 are placed between the two rectangular boxes 3, and the two cutting support assemblies 51 on the two gantries 5 are in a fitted state.

[0027] like Figures 5 and 6 As shown, the cutting support assembly 51 also includes a hanging plate 501, the top of the hanging plate 501 is fixedly installed at the middle position of the inner wall of the gantry 5, and a cutting knife 502 is fixedly installed at the bottom of the hanging plate 501; When the control motor 52 drives the gantry 5 to move, the cutter 502 fixed at the bottom of the hanging plate 501 cuts the skin of the leg bones. By continuously driving the gantry 5 to move by the motor 52, the cutter 502 can continuously cut the skin of the leg bones, thereby completing the function of cutting and peeling the incision. The doctor can judge the length of the patient's leg bones and control the motor 52 to drive the gantry 5 to move to different lengths, so as to achieve cutting of incisions of different lengths on the skin of the leg bones. It should be noted here that the height of the cutter 502 needs to be greater than the thickness of the leg muscle tissue.

[0028] like Figures 5 and 6 As shown, an outer screw hole 508 is provided on the inner wall of the hanging plate 501, and a screw handle 504 is rotatably connected to the outer wall of the hanging plate 501. An inner screw hole 507 is provided on the inner wall of the screw handle 504, and the inner wall of the inner screw hole 507 is threadedly connected to the inner wall of the outer screw hole 508. There are two supporting plates 503, and the supporting plates 503 are symmetrically arranged on both sides of the cutter 502. The top ends of the two supporting plates 503 are rotatably connected to the bottom of the hanging plate 501, and the inner wall of the hanging plate 501 is symmetrically slidably connected with hinges 506, and one end of the two hinges 506 is hinged to the inner walls of the two supporting plates 503 respectively. The top ends of the two supporting plates 503 are placed at the bottom of the screw handle 504, and pressure springs 505 are arranged between the top and bottom of the two supporting plates 503 and the top of the hanging plate 501. When the cutter 502 has completed the incision, the screw handle 504 on the hanging plate 501 is rotated. When the screw handle 504 is rotated, the inner screw hole 507 on the inner wall of the screw handle 504 is threadedly rotated at the outer screw hole 508 on the hanging plate 501. When the screw handle 504 is rotated, the bottom of the screw handle 504 will squeeze and push the hinge 506 to move downward. When the hinge 506 moves downward, the support plate 503 can be pushed to open from both sides of the cutter 502 through the hinge transmission, so as to support the incision end and realize the incision end to open the skin The function of the pressure spring 505 is to prevent the screw handle 504 from moving downward at an excessively high speed, thereby causing the two supporting plates 503 to open at too large an angle and break the skin and flesh tissue, thereby avoiding damage to the skin and flesh tissue. The outer supporting surfaces of the two supporting plates 503 are arc supporting surfaces. Compared with traditional rectangular supporting surfaces, the loss of skin and flesh tissue can be greatly avoided during support. It should be noted here that the initial positions of the two supporting plates 503 are placed on both sides of the two cutting knives 502, and the lower edges of the two supporting plates 503 are in contact with the lower edges of the two sides of the cutting knives 502.

[0029] like Figures 7 to 10As shown, an inclined block plate 39 is fixedly installed on the inner wall of the torque box 3, and a slide seat 38 is symmetrically slidably connected to the inner wall of the inclined block plate 39. A connecting rod seat 8 is arranged inside the two slide seats 38, and a supporting leather block 34 is fixedly installed on one end of the two connecting rod seats 8. A weight regulator 36 is fixedly installed on the bottom of the two slide seats 38. An arm 3902 is symmetrically slidably connected to the inner wall of one side of the inclined block plate 39, and a return spring 3901 is arranged between one end of the two arm rods 3902 and the inner wall of the inclined block plate 39; Due to the difference in human body weight, when selecting the traction block, the traction weight needs to be determined according to the patient's weight and injury condition, which is generally one seventh to one tenth of the patient's weight. Therefore, when the two support plates 503 are opened from both sides of the cutter 502 to complete the support of the incision end, the doctor judges the patient's weight and injury condition to select a suitable traction weight. When the traction weight is determined, the weight adjustment device 36 is controlled to achieve weight balancing. When the weight adjustment device 36 is adjusted, the weight adjustment device 36 will pull the slide 38 to slide downward from high to low in the inclined block plate 39 due to the weight, and the outer wall of the weight adjustment device 36 will squeeze the reset spring 3901 to push When the arm 3902 moves and slides, the slide seat 38 drives the two skin support blocks 34 to move backward through the connecting rod seat 8. When the two skin support blocks 34 move, the two skin support blocks 34 will push the skin and flesh tissue on both sides of the incision to both sides, open the incision, and facilitate the doctor to peel off the soft tissue and periosteum on the surface of the femur, playing the role of supporting the incision. When the peeling operation is completed, by adjusting the mass of the weight adjuster 36 to zero, the weight adjuster 36 will be reset under the thrust of the reset spring 3901, playing the role of returning the skin support block 34. It should be noted here that the initial setting position of the skin support block 34 should be placed on both sides of the cutter 502 and higher than the height of the cutter 502.

[0030] like Figures 9 to 14 As shown, the inner wall of the slide 38 is threadedly connected with a shifting rod 9, the bottom of the connecting rod seat 8 is slidably connected with the inner wall of the slide 38, one end of the shifting rod 9 is placed on the inner wall of the connecting rod seat 8 and is rotatably connected with the inner wall of the connecting rod seat 8, and the other end of the shifting rod 9 is fixedly installed with a rotating handle 10, which is placed outside the slide 38; Before use, the size of the incision required for the patient is determined, and the handle 10 is rotated to drive the shifting rod 9 to rotate. When the shifting rod 9 rotates, the connecting rod seat 8 drives the sliding seat 38 to move in the sliding seat 38, so that the position of the supporting leather block 34 is adjusted on one side of the support frame 4. By rotating the four handles 10, the position adjustment of the four supporting leather blocks 34 can be completed, thereby adjusting the support mouth distance.

[0031] like Figure 10 to Figure 11As shown, the lifting unit also includes a telescopic cylinder 35, which is fixedly installed inside the inclined block plate 39, a vertical frame 3201 is fixedly installed on the top of the torque box 3, the outer wall of the needle shaft 32 is slidably connected to the inner wall of the vertical frame 3201, and the outer wall of the needle shaft 32 is fixedly connected to the push frame 3202, one end of the output end of the telescopic cylinder 35 is fixedly connected to the bottom of the push frame 3202, and the outer wall of the vertical frame 3201 is slidably connected to the inner wall of the push frame 3202; When leg bone traction is required, the telescopic cylinder 35 drives the push frame 3202 to move upward, and when the push frame 3202 moves upward, it drives the needle shaft 32 to slide in the vertical frame 3201. Since the bone needle 6 is fixed between the two needle shafts 32 using a fastener, when the needle shaft 32 moves, it will drive the leg bone to be pulled and lifted, thereby achieving traction on the leg bone and playing the role of traction of the leg bone during surgery.

[0032] like Figure 10 to Figure 11 As shown, the inner wall of the torque box 3 is slidably connected with a push plate 37, a compound leaf spring 3701 is arranged between one side of the push plate 37 and the inner wall of the torque box 3, the outer wall of the compound leaf spring 3701 is slidably connected with the outer walls of the two weight adjusters 36, the other end of the output end of the telescopic cylinder 35 is fixedly installed with a gear rack 3503, the inner wall of the torque box 3 is rotatably connected with a gear 3501, and the bottom of the push plate 37 is fixedly installed with a gear rod 3502, and the teeth on the gear rod 3502 and the gear rack 3503 can mesh with the teeth on the gear 3501; When the telescopic cylinder 35 is driven to push for traction, the telescopic cylinder 35 also drives the gear rack 3503 to move. When the gear rack 3503 moves, it drives the gear 3501 to rotate. When the gear 3501 rotates, it drives the gear rod 3502 to move through the meshing transmission. The gear rod 3502 will pull the push plate 37 to move, and the push plate 37 can push the weight adjuster 36 to squeeze the reset spring 3901 to move, thereby driving the supporting skin block 34 to move laterally and downwardly, so that when the leg bone is pulled, the supporting skin block 34 can support the skin and flesh tissue to different degrees according to the height of the leg bone traction, so as to automatically adjust the supporting diameter. The higher the height, the larger the diameter of the supporting opening of the flesh tissue will be. On the one hand, supporting the flesh tissue to different degrees can prevent the tissue inside the leg bone from being affected by the flesh during traction, causing friction and damaging the tissue on the leg bone. On the other hand, through automatic adjustment, the doctor can reduce the steps of frequently adjusting the size of the supporting opening, so that the doctor can be more focused on the stripping operation, saving the doctor's physical strength and speeding up the operation. It should be noted here that the initial position of the gear rack 3503 is placed on one side of the gear 3501. When the telescopic cylinder 35 is not working, the teeth on the gear rack 3503 do not match the teeth on the gear rod 3502.

[0033] like Figures 7 to 9As shown, a cover baffle 31 is symmetrically fixedly installed on the top of the torque box 3, and two cover baffles 31 are respectively placed outside the two connecting rod seats 8; During the operation, the setting of the cover baffle 31 is convenient for placing the surgical instruments needed for stripping the leg bones, making the doctor more convenient during the operation. On the other hand, it is convenient for the doctor to place both hands, reducing some of the doctor's pressure and saving physical strength.

[0034] like Figures 9 to 13 As shown, a limited pulling block 33 is fixedly installed on the top of the torque box 3, and a limited pressure plate 3101 is fixedly installed on the inner wall of the cover baffle 31. The limited pulling block 33 is placed on the lower side of the leather support block 34. A strip plate 3404 is slidably connected to the inner wall of the leather support block 34. A frame plate 3403 is fixedly installed on the top of the strip plate 3404. A pressure plate 3401 is fixedly installed on the top of the frame plate 3403. A plurality of return plate springs 3402 are arranged between the bottom of the pressure plate 3401 and the frame plate 3403. The bottom end of one side of the pressure plate 3401 is slidably connected to the inner wall of the leather support block 34. A lifting opening 3405 is provided on the inner wall of the leather support block 34. The lifting opening 3405 is in the shape of an arc. The top of the pressure plate 3401 can be slidably connected to the bottom of the pressure limiting plate 3101. When the skin support block 34 is supporting and pulling the flesh tissue, the flesh tissue will be stuck in the pulling opening 3405 on one side of the skin support block 34, and then pulled by the weight regulator 36, the skin support block 34 will pull the flesh tissue to move, and through the limiting position of the pulling block 33, the skin support block 34 can support and pull the flesh tissue to turn the flesh tissue inside out. Because the leg bones will be lifted during traction, the supporting opening of the flesh tissue on both sides will become larger, and the contact area between the other side of the skin support block 34 and the flesh tissue will be reduced. Therefore, when the leg bones are pulled, the skin support block 34 moves backward. When moving, the setting of the pressure limiting plate 3101 is used to limit the pressure on the skin support block 34. When moving, the pressure plate 3401 on the top of the leather support block 34 will be pressed by the pressure limiting plate 3101 and will continue to move downward. When the pressure plate 3401 moves downward, the return plate spring 3402 will be squeezed to drive the frame plate 3403 to move. When the frame plate 3403 moves, the strip plate 3404 will slide out from the inner wall of the leather support block 34 and adjust the torque, so as to cooperate with the leather support block 34 to form a complete pulling block, so as to prevent the skin and flesh tissue from slipping out of the skin pulling mouth 3405 due to the small contact area with the skin. It plays an anti-slip effect. It should be noted here that the inclination angle of the inclined pressure surface of the pressure limiting plate 3101 should be greater than the inclined sliding angle of the leather support block 34.

[0035] like Figure 1 to Figure 2 As shown, a placement tray 2 is fixedly installed on one side of the top of the bed frame 1, and the placement tray 2 is higher than the height of the two gantry frames 5. The inner wall of the placement tray 2 is provided with a rectangular inner groove, which can be used to place medical instruments used in the stripping operation; Before the operation, the surgical instruments used in the operation are placed one by one on the placement tray 2. During the operation, since the placement tray 2 is located opposite to the doctor's operating position, it is convenient for the doctor to take and place the surgical instruments, thereby playing the role of placing the surgical instruments.

[0036] Working principle: During the operation, the patient's legs are first placed on the support frame 4, and the straps are used to pass them through the strapping opening 41, and then the patient's legs are tied to the support frame 4 using the straps. After the binding and fixing is completed, the support frame 4 is driven to move by controlling the frame adjustment device 7 to adjust the position of the patient's legs. When the leg position is adjusted to be flush with the cutting support component 51, the frame adjustment device 7 is continued to be controlled to slowly adjust the height of the support frame 4. When the cutting support component 51 enters the leg muscle, the movement of the frame adjustment device 7 is stopped. At this time, the control motor 52 drives the cutting support component 51 to move through the gantry 5, so that the cutting support component 51 slides in the leg muscle to open an incision. The doctor observes the patient's leg condition through operation, thereby controlling the cutting support component 51 to cut a suitable incision length, and then the cutting support component Component 51 drives the support plate 503 to support the two ends of the wound, which is convenient for the subsequent stripping operation. Then, the bone needle 6 is taken out, and the bone needle 6 is penetrated into one end of the femur by the penetration fixation method. The two ends of the bone needle 6 are fixed to the needle receiving shaft 32 by the fixing components. At this point, the doctor can use surgical instruments to strip the soft tissue and periosteum on the surface of the femur and perform the stripping operation. When the leg bone needs to be stripped and pulled, the needle receiving shaft 32 is driven by the lifting unit to move and pull the leg bone. While pulling, the lifting unit automatically adjusts the support distance between the skin and flesh openings according to the traction height, thereby preventing the skin and flesh from interfering with the leg bone when it is pulled, affecting the traction effect, and also greatly avoiding the damage to the tissue structure on the surface of the leg bone due to the friction of the skin and flesh when the leg bone is pulled. When the control motor 52 drives the gantry 5 to move, the cutter 502 fixed at the bottom of the hanging plate 501 cuts the skin of the leg bone. The motor 52 continuously drives the gantry 5 to move, so that the cutter 502 can continuously cut the skin of the leg bone, thereby completing the function of cutting and peeling the incision. The doctor can control the motor 52 to drive the gantry 5 to move to different lengths by judging the length of the patient's leg bone, so as to achieve incisions of different lengths on the skin of the leg bone; When the cutter 502 has completed the incision, the screw handle 504 on the hanging plate 501 is rotated. When the screw handle 504 is rotated, the inner screw hole 507 of the inner wall of the screw handle 504 is threadedly rotated at the outer screw hole 508 on the hanging plate 501. When rotating, the screw handle 504 can move downward from the hanging plate 501, and the bottom of the screw handle 504 will squeeze and push the hinge 506 to move downward. When the hinge 506 moves downward, it can push the support plate 503 to open from both sides of the cutter 502 through the hinge transmission, thereby supporting the incision end and achieving the effect of supporting the skin and flesh at the incision end. The setting of the pressure spring 505 is to prevent the screw handle 504 from moving downward due to excessive speed, resulting in the two support plates 503 opening too large an angle to break the skin and flesh tissue, thereby avoiding damage to the skin and flesh tissue. The outer support surfaces of the two support plates 503 are arc support surfaces. Compared with traditional rectangular support surfaces, the loss of skin and flesh tissue can be greatly avoided during support. When the two support plates 503 are opened from both sides of the cutter 502 to complete the support of the incision end, the doctor selects a suitable traction weight based on the patient's weight and injury. When the traction weight is determined, the weight adjustment device 36 is controlled to achieve weight balance. When the weight adjustment device 36 is adjusted, the weight adjustment device 36 will pull the slide 38 to slide downward from high to low in the inclined block plate 39 due to the weight, and the outer wall of the weight adjustment device 36 will squeeze the reset spring 3901 to push the arm 3902 to move. When sliding, the slide seat 38 drives the two skin support blocks 34 to move backward through the connecting rod seat 8. When the two skin support blocks 34 move, the two skin support blocks 34 will push the skin and flesh tissues on both sides of the incision to both sides, open the incision, and facilitate the doctor to peel the soft tissue and periosteum on the surface of the femur, playing the role of supporting the incision. When the peeling operation is completed, by adjusting the mass of the weight regulator 36 to zero, the weight regulator 36 will be reset under the thrust of the reset spring 3901, playing the role of returning the skin support block 34; Before use, by judging the size of the incision that the patient needs to cut, the rotating handle 10 is rotated to drive the shifting rod 9 to rotate, and the shifting rod 9 drives the connecting rod seat 8 to move in the sliding seat 38 when rotating, so that the position of the supporting skin block 34 is adjusted on one side of the support frame 4. By rotating the four rotating handles 10, the position adjustment of the four supporting skin blocks 34 can be completed, which plays the role of adjusting the support distance; When the leg bone needs to be pulled, the push frame 3202 is driven upward by the telescopic cylinder 35, and the push frame 3202 drives the needle receiving shaft rod 32 to slide in the vertical frame 3201 when it moves upward. Since the bone piercing needle 6 is fixed between the two needle receiving shaft rods 32 by a fastener, when the needle receiving shaft rod 32 moves, it drives the leg bone to be pulled and lifted, thereby achieving the traction of the leg bone, playing the role of traction of the leg bone during surgery; When the telescopic cylinder 35 is driven to push for traction, the telescopic cylinder 35 also drives the gear rack 3503 to move. When the gear rack 3503 moves, it drives the gear 3501 to rotate. When the gear 3501 rotates, it drives the gear rod 3502 to move through meshing transmission. The gear rod 3502 will pull the push plate 37 to move, and the push plate 37 can push the weight adjuster 36 to squeeze the reset spring 3901 to move, thereby driving the supporting skin block 34 to move laterally downward, so that when the leg bone is pulled, the supporting skin block 34 can support the skin and flesh tissue to different degrees according to the height of the leg bone traction, and play a role in automatically adjusting the supporting diameter. Because the higher the height of the leg bone traction, the larger the supporting diameter of the skin and flesh tissue will be, on the one hand, supporting the skin and flesh tissue to different degrees can prevent the tissue in the leg bone from being affected by the skin and flesh during traction, thereby damaging the tissue on the leg bone. On the other hand, through automatic adjustment, it can reduce the doctor's frequent steps of adjusting the size of the supporting diameter, so that the doctor can be more focused on the stripping operation, saving the doctor's physical strength while also speeding up the operation. During surgery, the setting of the cover baffle 31 is convenient for placing the surgical instruments needed for stripping the leg bones, so that the doctor can perform the surgery more smoothly. On the other hand, it is convenient for the doctor to put his hands, which reduces part of the doctor's pressure and saves physical strength. When the skin support block 34 is supporting and pulling the flesh tissue, the flesh tissue will be stuck in the skin pulling opening 3405 on one side of the skin support block 34, and then the skin support block 34 will pull the flesh tissue to move through the traction of the weight regulator 36. Through the limit of the pull limit block 33, the skin support block 34 can support and pull the flesh tissue to turn the flesh tissue outside. Because the leg bones will be lifted during traction, the supporting opening of the flesh tissue on both sides will become larger, and the contact area between the other side of the skin support block 34 and the flesh tissue will be reduced. Therefore, when the leg bones are pulled, the skin support block 34 moves backward. By setting the pressure limiting plate 3101, when the leather support block 34 moves, the pressure plate 3401 on the top of the leather support block 34 will be pressed by the pressure limiting plate 3101 and will continue to move downward. When the pressure plate 3401 moves downward, the return plate spring 3402 is squeezed to drive the frame plate 3403 to move. When the frame plate 3403 moves, the strip plate 3404 will slide out from the inner wall of the leather support block 34 to adjust the torque, thereby forming a complete scraping block in cooperation with the leather support block 34, preventing the skin and flesh tissue from slipping out of the skin pulling opening 3405 due to the small contact surface between the skin and flesh tissue, thereby playing an anti-slip role. Before the operation, the surgical instruments used in the operation are placed one by one on the placement tray 2. During the operation, since the placement tray 2 is located opposite to the doctor's operating position, it is convenient for the doctor to take and place the surgical instruments, thereby playing the role of placing the surgical instruments.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A traction device for leg bone stripping surgery, characterized in that: The invention comprises a bed frame (1), wherein a frame adjustment device (7) is fixedly installed at the middle position of the inner wall of the bed frame (1), a support frame (4) is arranged on the top of the frame adjustment device (7), the frame adjustment device (7) is used to drive the support frame (4) to adjust the position, the inner wall of the support frame (4) is symmetrically provided with a belt threading opening (41), a gantry frame (5) is symmetrically arranged on the top of the bed frame (1), two groups of motors (52) are symmetrically fixedly installed on the inner wall of the bed frame (1), the two groups of motors (52) are respectively arranged at the four corners of the inner wall of the bed frame (1), the output ends of the two groups of motors (52) are respectively fixedly connected to one side of the two gantry frames (5), and a cutting support assembly (51) is arranged at the middle position of the inner wall of the two gantry frames (5), and the cutting support assembly (51) includes a support plate (503), and the cutting support assembly (51) is used to drive the support plate (503) to support the two ends of the wound when the wound is cut. The two cutting support assemblies (51) are both placed directly above the support frame (4). A rectangular box (3) is symmetrically fixedly installed on the top of the bed frame (1). The two rectangular boxes (3) are both provided with a lifting unit inside. The lifting unit includes a needle connecting shaft (32). A bone piercing needle (6) is provided between the needle connecting shaft (32). The bone piercing needle (6) is used to perform bone traction on the leg bone. The lifting unit is used to drive the needle connecting shaft (32) to pull the leg bone to adjust the support distance between the skin and flesh openings by the traction height.

2. A traction device for leg bone stripping surgery according to claim 1, characterized in that: The cutting support assembly (51) further comprises a hanging plate (501), the top end of which is fixedly mounted on the middle position of the inner wall of the gantry (5), and the bottom end of which is fixedly mounted with a cutting knife (502).

3. A traction device for leg bone stripping surgery according to claim 2, characterized in that: The inner wall of the hanging plate (501) is provided with an outer screw hole (508), the outer wall of the hanging plate (501) is rotatably connected with a screw handle (504), the inner wall of the screw handle (504) is provided with an inner screw hole (507), the inner wall of the inner screw hole (507) is threadedly connected to the inner wall of the outer screw hole (508), there are two support plates (503), the support plates (503) are symmetrically arranged on both sides of the cutter (502), and the two support plates (503) are The top ends are rotatably connected to the bottom of the hanging plate (501), the inner wall of the hanging plate (501) is symmetrically slidably connected with a hinge (506), one end of the two hinges (506) is respectively hinged to the inner wall of the two supporting plates (503), the top ends of the two supporting plates (503) are placed on the bottom of the screw handle (504), and a pressure spring (505) is arranged between the bottom of the top end of the two supporting plates (503) and the top of the hanging plate (501).

4. The traction device for leg bone stripping surgery according to claim 1, characterized in that: An inclined block plate (39) is fixedly mounted on the inner wall of the torque box (3), a slide seat (38) is symmetrically slidably connected to the inner wall of the inclined block plate (39), a connecting rod seat (8) is arranged inside the two slide seats (38), a supporting leather block (34) is fixedly mounted on one end of the two connecting rod seats (8), a weight adjuster (36) is fixedly mounted on the bottom of the two slide seats (38), an arm rod (3902) is symmetrically slidably connected to the inner wall of the inclined block plate (39), and a return spring (3901) is arranged between one end of the two arm rods (3902) and the inner wall of the inclined block plate (39).

5. A traction device for leg bone stripping surgery according to claim 4, characterized in that: The inner wall of the slide seat (38) is threadedly connected with a seat shifting rod (9), the bottom of the connecting rod seat (8) is slidably connected to the inner wall of the slide seat (38), one end of the seat shifting rod (9) is placed on the inner wall of the connecting rod seat (8) and is rotatably connected to the inner wall of the connecting rod seat (8), and the other end of the seat shifting rod (9) is fixedly mounted with a rotating handle (10), and the rotating handle (10) is placed outside the slide seat (38).

6. A traction device for leg bone stripping surgery according to claim 5, characterized in that: The lifting and adjusting unit further comprises a telescopic cylinder (35), the telescopic cylinder (35) is fixedly mounted inside the inclined block plate (39), a vertical frame (3201) is fixedly mounted on the top of the torque box (3), an outer wall of the needle receiving shaft rod (32) is slidably connected to an inner wall of the vertical frame (3201), a push frame (3202) is fixedly connected to the outer wall of the needle receiving shaft rod (32), an output end of the telescopic cylinder (35) is fixedly connected to the bottom of the push frame (3202), and an outer wall of the vertical frame (3201) is slidably connected to an inner wall of the push frame (3202).

7. A traction device for leg bone stripping surgery according to claim 6, characterized in that: The inner wall of the torque box (3) is slidably connected to a push plate (37), a compound leaf spring (3701) is arranged between one side of the push plate (37) and the inner wall of the torque box (3), the outer wall of the compound leaf spring (3701) is slidably connected to the outer walls of the two weight adjusters (36), a gear rack (3503) is fixedly mounted on the other output end of the telescopic cylinder (35), the inner wall of the torque box (3) is rotatably connected to a gear (3501), a gear rod (3502) is fixedly mounted on the bottom of the push plate (37), and the teeth on the gear rod (3502) and the gear rack (3503) can mesh with the teeth on the gear (3501).

8. The traction device for leg bone stripping surgery according to claim 7, characterized in that: A cover baffle (31) is symmetrically fixedly mounted on the top of the torque box (3), and the two cover baffles (31) are respectively placed outside the two connecting rod seats (8).

9. The traction device for leg bone stripping surgery according to claim 8, characterized in that: A limited pulling block (33) is fixedly installed on the top of the torque box (3), and a limited pressure plate (3101) is fixedly installed on the inner wall of the cover baffle (31). The limited pulling block (33) is placed on the lower side of the supporting leather block (34). A strip plate (3404) is slidably connected to the inner wall of the supporting leather block (34). A frame plate (3403) is fixedly installed on the top of the strip plate (3404). A pressure plate (3401) is fixedly installed on the top of the frame plate (3403). A plurality of return plate springs (3402) are arranged between the bottom of the pressure plate (3401) and the frame plate (3403). The bottom end of one side of the pressure plate (3401) is slidably connected to the inner wall of the supporting leather block (34). A lifting opening (3405) is opened on the inner wall of the supporting leather block (34). The lifting opening (3405) is in the shape of an arc opening. The top of the pressure plate (3401) can be slidably connected to the bottom of the limiting pressure plate (3101).

10. The traction device for leg bone stripping surgery according to claim 1, characterized in that: A placement tray (2) is fixedly mounted on one side of the top of the bed frame (1). The placement tray (2) is higher than the height of the two gantry frames (5). A rectangular inner groove is provided on the inner wall of the placement tray (2) and can be used to place medical instruments used in the stripping operation.

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