Prosthesis removal device
By designing a prosthetic removal device that includes a fixing seat, a translation mechanism and a gravity compensation mechanism, the physical exhaust problem of doctors when removing artificial femoral head prosthesis is solved, and more efficient and precise operation is achieved to adapt to the needs of different prostheses.
Patent Information
- Application Number
- CN202411500712.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2044-10-25
AI Technical Summary
In existing femoral head replacement surgery, doctors need to fix and slightly move the prosthesis for a long time when removing the artificial femoral head prosthesis, resulting in high physical consumption and lack of effective auxiliary devices to reduce labor intensity.
A prosthetic extraction device including a fixing seat, a translation mechanism, an electric lifting rod and a gravity compensation mechanism is designed. Through the combination of a spiral shaft and a wire rope, a greater tension is provided to resist the torque and maintain the stability of the jaw fixing mechanism. And through the cooperation of the translation mechanism and the spring, the weight and position of different prostheses are adapted.
It effectively reduces the labor intensity of doctors, improves the accuracy and efficiency of removing the prosthesis, ensures that the prosthesis does not change during disassembly and cleaning, and adapts to the weight and shape of different prostheses.
Smart Images
Figure CN118986598B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of femoral head replacement, and in particular relates to a prosthesis removal device. Background Art
[0002] Hemiplegia surgery is a common hip surgery that is often used to treat hip pain and dysfunction. The main purpose of this surgery is to relieve pain and improve joint function by implanting an artificial prosthesis into the hip joint. During the operation, the doctor will remove the damaged hip bone and cartilage and replace the damaged part with an artificial prosthesis made of metal or plastic. These artificial prostheses can restore the stability and normal movement function of the hip joint, thereby helping patients relieve pain and improve mobility. Hemiplegia surgery is usually suitable for severe degenerative arthritis of the hip joint, hip fractures, necrotic hip head, etc. The length of the postoperative recovery period varies from individual to individual, but physical therapy and rehabilitation training are usually required to restore the function and stability of the hip joint.
[0003] The femoral head prosthesis removal device is a surgical tool used to perform surgery when an artificial femoral head prosthesis needs to be replaced or repaired. The femoral head of the human body is one of the largest bones in the hip joint. A general femoral head replacement surgery takes several hours. When removing the prosthesis, the prosthesis needs to be fixed first, then the fixing device on the prosthesis is removed, and then the soft tissue on the prosthesis is separated from the connected bone. These operations require frequent slight movements of the prosthesis, which requires someone to fix the prosthesis for a long time and requires irregular movements, which is a great challenge to the doctor's physical strength. Summary of the invention
[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a device that can assist doctors in removing prostheses and reduce the doctors' labor intensity.
[0005] The technical solution adopted to solve the above technical problems is: a prosthesis removal device, comprising a fixed seat, one side of the fixed seat is fixedly connected to a translation mechanism, the translation mechanism is fixedly connected to an electric lifting rod, one end of the electric lifting rod away from the translation mechanism is fixedly connected to a gravity compensation mechanism, one side of the gravity compensation mechanism is rotatably connected to a first rotating rod, one end of the first rotating rod away from the gravity compensation mechanism is rotatably connected to a vertical rod, and the lower end of the vertical rod is rotatably connected to a clamping claw fixing mechanism;
[0006] The gravity compensation mechanism includes a shell fixedly connected to the electric lifting rod, a second slide rail is fixedly connected to the bottom end of the shell, a second slider is slidably connected to the second slide rail, a first connecting rod is rotatably connected to the second slider, an end of the first connecting rod away from the second slider is rotatably connected to the second connecting rod, an end of the second connecting rod away from the first connecting rod is fixedly connected to a fan-shaped rotating block, a spiral shaft is rotatably connected to the shell, a steel wire rope is wound around the spiral shaft, both ends of the steel wire rope are fixedly connected to the fan-shaped rotating block, and a second spring is fixedly connected to the second slider;
[0007] Through the above technical solution, when the first rotating rod is rotated to any angle, by driving the spiral shaft to rotate, the steel wire rope on the spiral shaft drives the fan-shaped rotating block to rotate, so that the connecting rod drives the second sliding block to move up and down. When the angle of the first rotating rod relative to the ground is smaller, the torque required to maintain the spiral shaft fixed is greater. At this time, the second spring is more stretched, thereby providing a greater pulling force to counteract the torque. Through the balance of the two forces of tension and torque, the first rotating rod will not move downward due to the action of gravity, thereby maintaining the position of the prosthesis clamped by the clamp fixing mechanism unchanged, making it convenient for doctors to disassemble and clean the prosthesis. Connecting the fan-shaped rotating block through the steel wire rope on the spiral shaft can avoid the gap generated when using gear transmission, thereby improving the overall accuracy.
[0008] Furthermore, a fixed shaft is fixedly connected to one side of the shell, a second rotating rod is rotatably connected to the fixed shaft, a fastening cap is threadedly connected to one end of the fixed shaft away from the shell, a rubber gasket is arranged between the fastening cap and the second rotating rod, one end of the second rotating rod away from the fixed shaft is rotatably connected to the vertical rod, and the first rotating rod and the second rotating rod are arranged in parallel.
[0009] Through the above technical solution, the fastening cap can be rotated to make the rubber gasket squeeze the second rotating rod, and the second rotating rod can be fixed by the friction force provided by the rubber gasket to prevent the second rotating rod from moving at will. By arranging the first rotating rod and the second rotating rod in parallel, the first rotating rod, the second rotating rod, the vertical rod and the shell can form a parallelogram mechanism, so that the vertical rod always remains in a vertical state.
[0010] Furthermore, both ends of the fixing seat are fixedly connected with a pair of fixing plates, and round holes are opened on the pair of fixing plates. The first rotating rod includes a round rod rotatably connected to the spiral shaft, and the end of the round rod away from the spiral shaft is fixedly connected with a third handle.
[0011] Through the above technical solution, the fixing seat can be fixed next to the operating table by passing the bolt through the circular hole on the fixing plate, and the first rotating rod can be driven to rotate by the third handle, and a labor-saving lever is formed to facilitate the movement of the first rotating rod.
[0012] Furthermore, the translation mechanism includes a first slide rail fixedly connected to the fixed seat, the first slide rail is provided with a plurality of tooth grooves, the first slide rail is slidably connected with a first slider, the first slider is slidably connected with a fixed rod, an end of the fixed rod close to the first slide rail is fixedly connected with a locking block, an end of the locking block away from the fixed rod is fixedly connected with a locking tooth, an end of the fixed rod away from the locking block is fixedly connected with a first handle, and a first spring is provided on the outer sleeve of the fixed rod.
[0013] Through the above technical solution, the locking teeth on the locking block can be disengaged from the tooth groove by pulling the first handle, thereby moving the first slider, and the first slider can be moved along the first slide rail, thereby driving the overall position to be adjusted conveniently. After releasing the first handle, under the action of the first spring, the locking teeth on the locking block re-engage the tooth groove to complete the fixation.
[0014] Furthermore, a screw rod is threadedly connected to the upper end of the shell, a rotating cap is fixedly connected to the upper end of the screw rod, a plurality of second handles are fixedly connected to the rotating cap, the lower end of the screw rod is rotatably connected to a lifting plate, a pair of sliding rods are fixedly connected to the inner top wall of the shell, the pair of sliding rods pass through and are slidably connected to the lifting plate, and the lower surface of the lifting plate is fixedly connected to the second spring.
[0015] Through the above technical solution, the second handle can be used to drive the rotating cap to rotate, the rotating cap can drive the screw rod to rotate, and the screw rod can drive the lifting plate to move up and down along the sliding rod, so as to adjust the deformation range of the second spring to adapt to the weight of different prostheses. If the prosthesis is heavier, the lifting plate is moved up to allow the spring to provide more tension. If the prosthesis is lighter, the lifting plate is moved down to reduce the tension provided by the spring, so that the prosthesis is suspended and maintained in the desired position.
[0016] Furthermore, a first groove is provided on the fan-shaped rotating block, and clamping blocks are provided at diagonal positions of the fan-shaped rotating block, a first fixing bolt is slidably connected through the clamping block, the first fixing bolt is threadedly connected to the fan-shaped rotating block, a steel wire rope is squeezed and fixedly connected between the fan-shaped rotating block and the clamping block, a through hole is provided on the steel wire rope, a fixing hole is provided on the spiral shaft, a second fixing bolt is threadedly connected in the fixing hole, and the second fixing bolt passes through the through hole.
[0017] Through the above technical solution, the steel wire rope can be fixed on the spiral shaft by the second fixing bolt to prevent slipping, and the clamping block and the fan-shaped rotating block are brought closer by the first fixing bolt to clamp and fix the steel wire rope.
[0018] Furthermore, the clamp fixing mechanism includes a mounting plate rotatably connected to a vertical rod, the vertical rod and the mounting plate are connected by a damping shaft, a strip hole is opened on the mounting plate, locking grooves are opened on the upper and lower sides of the strip hole, and a moving block is slidably connected in the strip hole.
[0019] Through the above technical solution, the moving block can be moved in the strip hole to adjust the position of the clamping jaws, thereby facilitating adaptation to different prostheses.
[0020] Furthermore, a third spring is provided in the moving block, both ends of the third spring are fixedly connected with pins, one side of the moving block is rotatably connected to a pair of lower clamping jaws, an upper clamping jaw is rotatably connected between the pair of lower clamping jaws, and a torsion spring is provided between the lower clamping jaws and the upper clamping jaw.
[0021] With the above technical solution, when the moving block slides in the strip hole, the third spring pushes the pin into the locking groove to lock it, and the upper and lower clamps can grasp the prosthesis to facilitate the doctor's cleaning operation.
[0022] The beneficial effects of the present invention are as follows: (1) The present invention sets a gravity compensation mechanism. When the first rotating rod rotates to any angle, it drives the spiral shaft to rotate, and the steel wire rope on the spiral shaft drives the fan-shaped rotating block to rotate, so that the connecting rod drives the second sliding block to move up and down. When the angle of the first rotating rod relative to the ground is smaller, the torque required to maintain the spiral shaft fixed is greater, and at this time, the second spring is more stretched, thereby providing a greater pulling force to counteract the torque. Through the balance of the two forces of tension and torque, the first rotating rod will not move downward due to the action of gravity, thereby maintaining the position of the prosthesis clamped by the clamp fixing mechanism unchanged, making it convenient for doctors to disassemble and clean the prosthesis. The steel wire rope on the spiral shaft connects the fan-shaped rotating block to avoid the gap generated when using gear transmission, thereby improving the overall accuracy. (2) The present invention sets a screw on the gravity compensation mechanism, drives the rotating cap to rotate through the second handle, and the rotating cap drives the screw to rotate The screw rod drives the lifting plate to move up and down along the sliding rod, thereby adjusting the deformation range of the second spring, which is convenient for adapting to the weight of different prostheses. If the prosthesis is heavier, the lifting plate is moved up to allow the spring to provide more pulling force. If the prosthesis is lighter, the lifting plate is moved down to reduce the pulling force provided by the spring, so that the prosthesis is suspended in the air and maintained at the desired position. The third handle on the first rotating rod can form a labor-saving lever to easily remove the prosthesis; (3) The present invention sets a translation mechanism, and by pulling the first handle, the locking teeth on the locking block are disengaged from the tooth groove, thereby moving the first slider, so that the first slider moves along the first slide rail, thereby driving the overall position to be adjusted conveniently. After releasing the first handle, under the action of the first spring, the locking teeth on the locking block re-engage the tooth groove to complete the fixation. By rotating the fastening cap, the rubber gasket can squeeze the second rotating rod, and the friction provided by the rubber gasket can fix the second rotating rod to prevent the second rotating rod from moving at will. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 This is a structural diagram of a prosthesis removal device according to the present invention from a first perspective;
[0024] Figure 2 is a second viewing angle diagram of a prosthesis removal device of the present invention;
[0025] Figure 3 It is a structural diagram of a translation mechanism of a prosthesis removal device of the present invention;
[0026] Figure 4 It is a structural diagram of a clamping claw fixing mechanism of a prosthesis removal device of the present invention;
[0027] Figure 5 It is a cross-sectional view of a clamping claw fixing mechanism of a prosthesis removal device of the present invention;
[0028] Figure 6 It is a connecting rod structure diagram of a prosthesis removal device of the present invention;
[0029] Figure 7 yes Figure 6 A magnified image of point A;
[0030] Figure 8 It is a cross-sectional view of a gravity compensation mechanism of a prosthesis removal device of the present invention;
[0031] Fig. 9 yes Figure 8 A magnified view of point B;
[0032] Fig.10 It is a three-dimensional diagram of a gravity compensation mechanism of a prosthesis removal device of the present invention;
[0033] Fig.11 yes Fig.10 Enlarged view of point C;
[0034] Fig.12 yes Fig.10 The enlarged view of point D;
[0035] Fig.13 It is a structural diagram of a spiral shaft of a prosthesis removal device of the present invention;
[0036] Fig.14 The present invention is a wire rope structure diagram of a prosthesis removal device.
[0037] Reference numerals: 1, fixed seat; 2, translation mechanism; 21, first slide rail; 22, tooth groove; 23, first slider; 24, locking block; 25, first spring; 26, fixed rod; 27, first handle; 28, locking tooth; 3, fixed plate; 4, round hole; 5, electric lifting rod; 6, gravity compensation mechanism; 61, housing; 62, second slide rail; 63, second slider; 64, first connecting rod; 65, second connecting rod; 66, fan-shaped rotating block; 67, spiral shaft; 68, wire rope; 69, first groove; 610, clamping block; 611, first fixing bolt; 61 2. Second fixing bolt; 613. Through hole; 614. Fixing hole; 615. Second spring; 616. Lifting plate; 617. Screw rod; 618. Sliding rod; 619. Rotating cap; 620. Second handle; 7. First rotating rod; 71. Round rod; 72. Third handle; 8. Vertical rod; 9. Clamp fixing mechanism; 91. Mounting plate; 92. Strip hole; 93. Locking groove; 94. Moving block; 95. Lower clamp; 96. Pin; 97. Third spring; 98. Upper clamp; 10. Second rotating rod; 11. Fixed shaft; 12. Fastening cap; 13. Rubber gasket. DETAILED DESCRIPTION
[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0039] like Figure 1-Figure 14 As shown, a prosthesis removal device of this embodiment includes a fixed seat 1, an electric lifting rod 5 is fixedly connected to the translation mechanism 2, a first rotating rod 7 is rotatably connected to one side of the gravity compensation mechanism 6, and the end of the first rotating rod 7 away from the gravity compensation mechanism 6 is rotatably connected to the vertical rod 8. The gravity compensation mechanism 6 can be driven to rise or fall by the electric lifting rod 5.
[0040] A fixed shaft 11 is fixedly connected to one side of the shell 61, and a second rotating rod 10 is rotatably connected to the fixed shaft 11. A fastening cap 12 is threadedly connected to the end of the fixed shaft 11 away from the shell 61, and a rubber gasket 13 is arranged between the fastening cap 12 and the second rotating rod 10. The end of the second rotating rod 10 away from the fixed shaft 11 is rotatably connected to the vertical rod 8. The first rotating rod 7 and the second rotating rod 10 are arranged in parallel. The fastening cap 12 is rotated to make the rubber gasket 13 squeeze the second rotating rod 10, and the second rotating rod 10 is fixed by the friction force of the rubber gasket 13, thereby locking the first rotating rod 7. The first rotating rod 7, the second rotating rod 10, the vertical rod 8 and the shell 61 form a parallelogram mechanism.
[0041] A pair of fixing plates 3 are fixedly connected at both ends of the fixing seat 1, and a round hole 4 is opened on the pair of fixing plates 3. The first rotating rod 7 includes a round rod 71 rotatably connected to the spiral shaft 67, and the end of the round rod 71 away from the spiral shaft 67 is fixedly connected to the third handle 72. The round rod 71 is driven to rotate by the third handle 72, and the third handle 72 and the round rod 71 form a labor-saving lever.
[0042] like Figure 3 As shown, a translation mechanism 2 is fixedly connected to one side of the fixed seat 1, and the translation mechanism 2 includes a first slide rail 21 fixedly connected to the fixed seat 1, a plurality of tooth grooves 22 are opened on the first slide rail 21, a first slider 23 is slidably connected to the first slide rail 21, and a fixing rod 26 is slidably connected in the first slider 23, and an end of the fixing rod 26 close to the first slide rail 21 is fixedly connected to a locking block 24, and an end of the locking block 24 away from the fixing rod 26 is fixedly connected to a locking tooth 28, and an end of the fixing rod 26 away from the locking block 24 is fixedly connected to a first handle 27, and a first spring 25 is provided on the outer sleeve of the fixing rod 26, and the first handle 27 is pulled outward, and the first handle 27 drives the locking block 24 to move outward through the fixing rod 26, so that the locking tooth 28 is disengaged from the tooth groove 22, and then the first slider 23 is moved to a suitable position, and the first handle 27 is released, at this time, the first spring 25 pushes the locking block 24 back to its position, and the locking tooth 28 on the locking block 24 is reinserted into the tooth groove 22 to complete the locking.
[0043] like Figure 2 , Figure 4 and Figure 5 As shown, the lower end of the vertical rod 8 is rotatably connected to a clamp fixing mechanism 9, and the clamp fixing mechanism 9 includes a mounting plate 91 rotatably connected to the vertical rod 8. The vertical rod 8 and the mounting plate 91 are connected by a damping shaft. A strip hole 92 is provided on the mounting plate 91, and locking grooves 93 are provided on the upper and lower sides of the strip hole 92. A moving block 94 is slidably connected in the strip hole 92, and the position of the moving block 94 can be adjusted to adapt to different prostheses.
[0044] A third spring 97 is provided in the moving block 94, and both ends of the third spring 97 are fixedly connected with a pin 96. A pair of lower clamping jaws 95 are rotatably connected to one side of the moving block 94, and an upper clamping jaw 98 is rotatably connected between the pair of lower clamping jaws 95. A torsion spring is provided between the lower clamping jaw 95 and the upper clamping jaw 98. The third spring 97 pushes the pin 96 into the locking groove 93 for locking. The prosthesis can be grasped by the upper clamping jaw 98 and the lower clamping jaw 95, which makes it convenient for the doctor to clean the prosthesis.
[0045] like Figure 8-Figure 14As shown, the end of the electric lifting rod 5 away from the translation mechanism 2 is fixedly connected to the gravity compensation mechanism 6, and the gravity compensation mechanism 6 includes a shell 61 fixedly connected to the electric lifting rod 5, a second slide rail 62 is fixedly connected to the bottom end of the shell 61, a second slider 63 is slidably connected to the second slide rail 62, a first connecting rod 64 is rotatably connected to the second slider 63, an end of the first connecting rod 64 away from the second slider 63 is rotatably connected to the second connecting rod 65, an end of the second connecting rod 65 away from the first connecting rod 64 is fixedly connected to a fan-shaped rotating block 66, a spiral shaft 67 is rotatably connected in the shell 61, a steel wire rope 68 is wound around the spiral shaft 67, and both ends of the steel wire rope 68 are connected to the fan The fan-shaped rotating block 66 is fixedly connected, and the second slider 63 is fixedly connected with a second spring 615. The first rotating rod 7 drives the spiral shaft 67 to rotate. One end of the wire rope 68 on the spiral shaft 67 is loosened and stretched, and the other end is wound and shortened, thereby driving the fan-shaped rotating block 66 to rotate. The fan-shaped rotating block 66 drives the second connecting rod 65 to rotate, and the second connecting rod 65 drives the first connecting rod 64 to move. The first connecting rod 64 drives the second slider 63 to move downward along the second slide rail 62, thereby lengthening the second spring 615. The tension of the second spring 615 is increased, thereby counteracting the increased gravity borne by the first rotating rod 7 through the transmission of the first connecting rod 64, the second connecting rod 65 and the fan-shaped rotating block 66.
[0046] A screw rod 617 is threadedly connected to the upper end of the shell 61, and a rotating cap 619 is fixedly connected to the upper end of the screw rod 617. A plurality of second handles 620 are fixedly connected to the rotating cap 619. The lower end of the screw rod 617 is rotatably connected to the lifting plate 616. A pair of sliding rods 618 are fixedly connected to the top wall of the shell 61. The pair of sliding rods 618 penetrate and slide to connect the lifting plate 616. The lower surface of the lifting plate 616 is fixedly connected to the second spring 615. When the tension of the second spring 615 needs to be adjusted, the rotating cap 619 is driven to rotate by the second handle 620, and the rotating cap 619 drives the screw rod 617 to rotate. The screw rod 617 drives the lifting plate 616 to move along the sliding rod 618, thereby changing the deformation range of the second spring 615.
[0047] A first groove 69 is provided on the fan-shaped rotating block 66, and clamping blocks 610 are provided at diagonal positions of the fan-shaped rotating block 66. A first fixing bolt 611 is slidably connected to the clamping block 610, and the first fixing bolt 611 is threadedly connected to the fan-shaped rotating block 66. A wire rope 68 is squeezed and fixedly connected between the fan-shaped rotating block 66 and the clamping block 610. A through hole 613 is provided on the wire rope 68, and a fixing hole 614 is provided on the spiral shaft 67. A second fixing bolt 612 is threadedly connected to the fixing hole 614, and the second fixing bolt 612 passes through the through hole 613. The setting of the first groove 69 can prevent the second fixing bolt 612 from interfering with the rotation of the fan-shaped rotating block 66. Through the setting of the clamping block 610 and the first fixing bolt 611, both ends of the wire rope 68 can be fixed to the fan-shaped rotating block 66, and through the setting of the second fixing bolt 612, the wire rope 68 can be fixed to the spiral shaft 67.
[0048] The working principle of this embodiment is as follows: the fixing seat 1 is fixed to the side of the operating table by passing the bolt through the circular hole 4 on the fixing plate 3. During the operation, the first handle 27 is pulled outward, and the first handle 27 drives the locking block 24 to move outward through the fixing rod 26, so that the locking tooth 28 is separated from the tooth groove 22. Then, the first slider 23 is moved to a suitable position, and the first handle 27 is released. At this time, the first spring 25 pushes the locking block 24 back to its original position, and the locking tooth 28 on the locking block 24 is reinserted into the tooth groove 22 to complete the locking.
[0049] The gravity compensation mechanism 6 is raised and lowered by the electric lifting rod 5, and the first rotating rod 7 is driven downward by the third handle 72. As the angle between the first rotating rod 7 and the ground becomes smaller, the force on the first rotating rod 7 can be decomposed into the pressure along the rod and the vertical downward gravity. Therefore, according to the vector decomposition, the downward gravity of the weight carried by the first rotating rod 7 increases. At the same time, the first rotating rod 7 drives the spiral shaft 67 to rotate. One end of the wire rope 68 on the spiral shaft 67 is loosened and extended, and the other end is wound and shortened, thereby driving the fan-shaped rotating block 66 to rotate. The fan-shaped rotating block 66 drives the second connecting rod 65 to rotate, the second connecting rod 65 drives the first connecting rod 64 to move, and the first connecting rod 64 drives the second slider 63 to move downward along the second slide rail 62, thereby lengthening the second spring 615, and the tension of the second spring 615 increases, so that the increased gravity carried by the first rotating rod 7 is resisted through the transmission of the first connecting rod 64, the second connecting rod 65 and the fan-shaped rotating block 66, and the first rotating rod 7 is maintained not to continue to rotate. The first rotating rod 7, the second rotating rod 10, the vertical rod 8 and the shell 61 constitute a parallelogram mechanism;
[0050] When the tension of the second spring 615 needs to be adjusted, the second handle 620 drives the rotating cap 619 to rotate, the rotating cap 619 drives the screw rod 617 to rotate, and the screw rod 617 drives the lifting plate 616 to move along the sliding rod 618, thereby changing the deformation range of the second spring 615;
[0051] Afterwards, the position of the moving block 94 is adjusted. When the moving block 94 slides in the bar-shaped hole 92, the third spring 97 pushes the pin 96 into the locking groove 93 to lock it. The upper clamping jaw 98 and the lower clamping jaw 95 can grasp the prosthesis to facilitate the doctor to clean the prosthesis.
[0052] When needed, the fastening cap 12 is rotated to make the rubber gasket 13 squeeze the second rotating rod 10 , and the second rotating rod 10 is fixed by the friction force of the rubber gasket 13 , thereby locking the first rotating rod 7 .
[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.
Claims
1. A prosthesis removal device, comprising a fixing seat (1), characterized in that: One side of the fixed seat (1) is fixedly connected to a translation mechanism (2), the translation mechanism (2) is fixedly connected to an electric lifting rod (5), one end of the electric lifting rod (5) away from the translation mechanism (2) is fixedly connected to a gravity compensation mechanism (6), one side of the gravity compensation mechanism (6) is rotatably connected to a first rotating rod (7), one end of the first rotating rod (7) away from the gravity compensation mechanism (6) is rotatably connected to a vertical rod (8), and the lower end of the vertical rod (8) is rotatably connected to a clamping claw fixing mechanism (9); The gravity compensation mechanism (6) comprises a shell (61) fixedly connected to the electric lifting rod (5), a second slide rail (62) being fixedly connected to the bottom end of the shell (61), a second slider (63) being slidably connected to the second slide rail (62), a first connecting rod (64) being rotatably connected to the second slider (63), an end of the first connecting rod (64) away from the second slider (63) being rotatably connected to the second connecting rod (65), an end of the second connecting rod (65) away from the first connecting rod (64) being fixedly connected to a fan-shaped rotating block (66), a spiral shaft (67) being rotatably connected to the shell (61), a steel wire rope (68) being wound around the spiral shaft (67), both ends of the steel wire rope (68) being fixedly connected to the fan-shaped rotating block (66), and a second spring (615) being fixedly connected to the second slider (63); A pair of fixing plates (3) are fixedly connected at both ends of the fixing seat (1), and a round hole (4) is provided on each of the pair of fixing plates (3). The first rotating rod (7) comprises a round rod (71) rotatably connected to the spiral shaft (67), and a third handle (72) is fixedly connected to one end of the round rod (71) away from the spiral shaft (67).
2. A prosthesis removal device according to claim 1, characterized in that: A fixed shaft (11) is fixedly connected to one side of the housing (61), a second rotating rod (10) is rotatably connected to the fixed shaft (11), a fastening cap (12) is threadedly connected to one end of the fixed shaft (11) away from the housing (61), a rubber gasket (13) is arranged between the fastening cap (12) and the second rotating rod (10), an end of the second rotating rod (10) away from the fixed shaft (11) is rotatably connected to the vertical rod (8), and the first rotating rod (7) and the second rotating rod (10) are arranged in parallel.
3. A prosthesis removal device according to claim 1, characterized in that: The translation mechanism (2) comprises a first slide rail (21) fixedly connected to the fixed seat (1), the first slide rail (21) being provided with a plurality of tooth grooves (22), a first slider (23) being slidably connected to the first slide rail (21), a fixed rod (26) being slidably connected through the first slider (23), an end of the fixed rod (26) close to the first slide rail (21) being fixedly connected to a locking block (24), an end of the locking block (24) away from the fixed rod (26) being fixedly connected to a locking tooth (28), an end of the fixed rod (26) away from the locking block (24) being fixedly connected to a first handle (27), and a first spring (25) being provided on an outer sleeve of the fixed rod (26).
4. The prosthesis removal device according to claim 1, characterized in that: A screw rod (617) is threadedly connected through the upper end of the housing (61), a rotating cap (619) is fixedly connected to the upper end of the screw rod (617), a plurality of second handles (620) are fixedly connected to the rotating cap (619), a lower end of the screw rod (617) is rotatably connected to a lifting plate (616), a pair of sliding rods (618) is fixedly connected to the inner top wall of the housing (61), the pair of sliding rods (618) penetrate through the lifting plate (616) and are slidably connected, and a lower surface of the lifting plate (616) is fixedly connected to a second spring (615).
5. A prosthesis removal device according to claim 4, characterized in that: The fan-shaped rotating block (66) is provided with a first groove (69), and clamping blocks (610) are provided at diagonal positions of the fan-shaped rotating block (66). A first fixing bolt (611) is slidably connected through the clamping block (610), and the first fixing bolt (611) is threadedly connected to the fan-shaped rotating block (66). A steel wire rope (68) is squeezed and fixedly connected between the fan-shaped rotating block (66) and the clamping block (610), and a through hole (613) is provided on the steel wire rope (68). The spiral shaft (67) is provided with a fixing hole (614), and a second fixing bolt (612) is threadedly connected to the fixing hole (614), and the second fixing bolt (612) passes through the through hole (613).
6. The prosthesis removal device according to claim 1, characterized in that: The clamping jaw fixing mechanism (9) comprises a mounting plate (91) rotatably connected to a vertical rod (8); the vertical rod (8) and the mounting plate (91) are connected by a damping shaft; a strip hole (92) is provided on the mounting plate (91); locking grooves (93) are provided on both upper and lower sides of the strip hole (92); and a moving block (94) is slidably connected in the strip hole (92).
7. A prosthesis removal device according to claim 6, characterized in that: A third spring (97) is arranged in the moving block (94), and both ends of the third spring (97) are fixedly connected to pins (96). A pair of lower clamping jaws (95) are rotatably connected to one side of the moving block (94), and an upper clamping jaw (98) is rotatably connected between the pair of lower clamping jaws (95), and a torsion spring is arranged between the lower clamping jaws (95) and the upper clamping jaw (98).