Prosthetic joint repositor in artificial hip joint replacement

Abstract

The invention relates to the technical field of prosthetic joint reduction, in particular to a prosthetic joint reduction device in artificial hip joint replacement, which comprises an operating bed frame and a bottom plate mounted at the top end of the operating bed frame, a clamping mounting mechanism is mounted at the bottom end of the bottom plate, and a stable lifting mechanism is mounted at the top end of the bottom plate. A hip joint thighbone prosthesis moving mechanism and an acetabulum clamping and fixing frame are installed at the top end of the stable lifting mechanism. The device has the beneficial effects that the mounting plate can be kept stable in the lifting process, the heights of the two ends are consistent, and the horizontal precision is high, so that a hip joint thighbone prosthesis and an acetabulum are accurately aligned, and safe and stable restoration of a prosthesis joint in artificial hip joint replacement is facilitated; the hip joint femoral prosthesis is kept to be accurately aligned with the acetabulum during movement, the artificial hip joint replacement is accurately reset, collision and friction are reduced, and the pain feeling of a patient is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of prosthetic joint reduction, and in particular to a prosthetic joint reducer in artificial hip joint replacement surgery. Background Art

[0002] The hip joint is the central support of the entire human body, including a bony structure composed of the acetabulum and the femoral head, with the top of the femoral head embedded in the acetabulum. Total hip replacement (THA) is one of the important orthopedic surgeries for treating patients with hip joint diseases. It uses bone cement and screws to fix the artificial prosthesis consisting of the femur and acetabulum on normal bones to replace the diseased joint and reconstruct the normal function of the patient's hip joint. This technology is mainly suitable for osteoarthritis, hip fractures, etc.

[0003] The existing prosthetic joint reducer in artificial hip replacement surgery, due to the tightness of human joints and the safety of use, cannot maintain the smooth lifting and moving of the hip femoral prosthesis to the acetabulum where it needs to be installed, and cannot maintain accurate alignment between the hip femoral prosthesis and the acetabulum, and cannot maintain precise horizontality when they are installed and connected to each other, resulting in bumps and frictions between the acetabulum and the hip femoral prosthesis, causing pain to the patient. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art that the femoral prosthesis of the hip joint cannot be smoothly lifted and lowered to the acetabulum where it needs to be installed, the femoral prosthesis of the hip joint cannot be accurately aligned with the acetabulum, the precise horizontality cannot be maintained when they are installed and connected to each other, and there will be bumps and frictions between the acetabulum and the femoral prosthesis of the hip joint, and a prosthetic joint reducer is proposed for artificial hip replacement surgery.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A prosthetic joint reducer for artificial hip replacement is designed, comprising an operating bed frame and a base plate installed on the top thereof, the base plate being detachably fastened and slidably installed on the top of the operating bed frame, a clamping and mounting mechanism being installed on the bottom end of the base plate, a smooth lifting mechanism being installed on the top end of the base plate, a hip joint femoral prosthesis moving mechanism and an acetabulum clamping and fixing frame being installed on the top end of the smooth lifting mechanism; the clamping and mounting mechanism comprises a connecting plate and a clamping plate, which are fastened and mounted on both sides of the operating bed frame respectively, and the connecting plate is fixedly mounted on the bottom end of the base plate; the smooth lifting mechanism comprises a lifting cylinder, a lifting column and a smooth mechanism, the lifting cylinder is fixedly mounted on the top end of the base plate, a mounting plate is fixedly mounted on the top end, and the lifting column is fixedly mounted on the bottom ends of both ends of the mounting plate. Guide cylinders are fixed at both ends of the base plate, the lifting column slides through the guide cylinders, and the stabilizing mechanism is installed on one side of the two guide cylinders; the stabilizing mechanism includes a stabilizing rod and a gear, a support plate is fixed to the top of the base plate, the stabilizing rod rotates horizontally and passes through the top of the support plate, the gear is fixedly installed at both ends of the stabilizing rod, a meshing groove is provided on the side of the guide cylinder and close to the gear, a tooth bar is provided on the surface of the lifting column, and the side of the gear passes through the meshing groove and is meshed and transmitted with the tooth bar; the hip joint femoral prosthesis moving mechanism includes a hip joint femoral prosthesis clamping frame, a moving plate and an adjusting rod, and the moving plate and the hip joint femoral prosthesis clamping frame are driven to move horizontally and linearly toward the acetabulum clamping fixing frame by rotating the adjusting rod.

[0007] Furthermore, a movable groove is opened in the middle of the mounting plate, and the movable plate is fixedly mounted on the bottom end of the hip joint femoral prosthesis clamping frame, and its bottom end is slidably inserted into the movable groove. The adjusting rod is threaded through the threaded hole reserved at one end of the mounting plate and inserted into the movable groove. Its inner end is rotatably mounted and connected with the bottom end of the movable plate, and the hip joint femoral prosthesis clamping frame moves along the movable groove toward the acetabulum clamping frame.

[0008] Furthermore, a guide rod is fixed on the inner side of the clamping plate, and the guide rod passes through a through hole reserved on the side of the connecting plate, and a threaded fastening rod passes through the middle rotation of the connecting plate, and the inner end of the threaded fastening rod is connected to the middle rotation installation of the clamping plate.

[0009] Furthermore, the bottom plate is horizontally arranged, the connecting plate and the clamping plate are both rectangular structures and are vertically arranged, and the guide rod and the threaded fastening rod are horizontally arranged at the bottom end of the operating bed frame.

[0010] Furthermore, the lifting cylinder and the guide cylinder are both arranged vertically, and the mounting plate is a rectangular plate structure and is arranged horizontally.

[0011] Furthermore, the support plate is vertically arranged on one side of the lifting cylinder, the meshing groove is a rectangular groove structure, and the tooth bar is vertically arranged.

[0012] Furthermore, the hip joint femoral prosthesis clamping frame and the acetabulum clamping and fixing frame are both vertically mounted on the top of the mounting plate and horizontally aligned with each other.

[0013] Furthermore, the cross-sections of the movable groove and the movable plate are both T-shaped structures, and are slidably connected to each other by snapping, the movable plate is vertically arranged, and the adjustment rod is a threaded rod structure and is horizontally arranged.

[0014] The invention provides a prosthetic joint reducer for artificial hip replacement, which has the following beneficial effects:

[0015] 1. The base plate of the present invention is installed on the top of the operating table frame through a connecting plate and a clamping plate, and is close to the surgical position. The mounting plate, the hip joint femoral prosthesis moving mechanism and the acetabulum clamping and fixing frame are driven to rise and move to the acetabulum through a smooth lifting mechanism. In the smooth lifting mechanism, during the process of the mounting plate being driven to rise and fall by the lifting cylinder, the gear in the smooth mechanism is meshed and connected with the toothed bar on the surface of the lifting column, and the gear is limited by the smooth rod to rotate horizontally and stably, so that the mounting plate can be kept relatively stable during the lifting process, and the heights of the two ends are relatively consistent, with high horizontal accuracy, thereby maintaining accurate alignment between the hip joint femoral prosthesis and the acetabulum, which is beneficial to the safe and stable resetting of the prosthetic joint during artificial hip replacement.

[0016] 2. The acetabulum clamping and fixing frame of the present invention is installed at one end of the mounting plate and is close to the position requiring surgery. At the same time, the hip joint femoral prosthesis is clamped at the top of the hip joint femoral prosthesis clamping frame. By rotating the adjusting rod, the movable plate and the hip joint femoral prosthesis clamping frame are driven to move along the horizontal straight line of the movable groove toward the acetabulum clamping and fixing frame, thereby keeping the hip joint femoral prosthesis moving and accurately aligning with the acetabulum, accurately resetting the artificial hip joint replacement, reducing bumps and friction, and reducing the patient's pain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0019] Figure 2 For the present invention Figure 1 Schematic diagram of the overall structure;

[0020] Figure 3 For the present invention Figure 1 Schematic diagram of the hip joint femoral prosthesis movement mechanism;

[0021] Figure 4 For the present invention Figure 1 Schematic diagram of the clamping and mounting mechanism.

[0022] In the figure: 1. operating table frame; 2. bottom plate; 3. guide rod; 4. connecting plate; 5. threaded fastening rod; 6. stabilizing rod; 7. supporting plate; 8. gear; 9. lifting cylinder; 10. toothed bar; 11. mounting plate; 12. adjusting rod; 13. hip joint femoral prosthesis clamping frame; 14. moving plate; 15. acetabulum clamping frame; 16. moving groove; 17. lifting column; 18. guide cylinder; 19. meshing groove; 20. clamping plate. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] For examples, see Figure 1 , Figure 2 , Figure 3 and Figure 4 The figure shows a prosthetic joint reducer for artificial hip replacement surgery, including an operating bed frame 1 and a base plate 2 installed on the top thereof. The base plate 2 is detachably fastened and slidably installed on the top of the operating bed frame 1. A clamping and mounting mechanism is installed at the bottom end of the base plate 2, and a smooth lifting mechanism is installed at the top of the base plate 2. A hip joint femoral prosthesis moving mechanism and an acetabulum clamping and fixing frame 15 are installed at the top of the smooth lifting mechanism.

[0025] Furthermore, the clamping and mounting mechanism includes a connecting plate 4 and a clamping plate 20 , which are respectively fastened and mounted on both sides of the operating bed frame 1 , and the connecting plate 4 is fixedly mounted on the bottom end of the base plate 2 .

[0026] A guide rod 3 is fixed on the inner side of the clamping plate 20, and the guide rod 3 passes through a through hole reserved on the side of the connecting plate 4. A threaded fastening rod 5 passes through the middle rotation of the connecting plate 4, and the inner end of the threaded fastening rod 5 is connected to the middle rotation installation of the clamping plate 20.

[0027] The bottom plate 2 is installed on the top of the operating bed frame 1 through the connecting plate 4 and the clamping plate 20, and is close to the required surgical position. It can be moved along the surface of the operating bed frame 1 and is easy to disassemble and install.

[0028] The bottom plate 2 is horizontally arranged, the connecting plate 4 and the clamping plate 20 are both rectangular structures and are vertically arranged, and the guide rod 3 and the threaded fastening rod 5 are horizontally arranged at the bottom end of the operating bed frame 1.

[0029] In detail, the smooth lifting mechanism includes a lifting cylinder 9, a lifting column 17 and a stabilizing mechanism. The lifting cylinder 9 is fixedly installed on the top of the base plate 2, and a mounting plate 11 is fixedly installed on the top of the base plate 2. The lifting column 17 is fixedly installed on the bottom ends of both ends of the mounting plate 11. Guide cylinders 18 are fixed at both ends of the base plate 2. The lifting column 17 slides through the guide cylinders 18, and the stabilizing mechanism is installed on one side of the two guide cylinders 18.

[0030] The lifting cylinder 9 and the guide cylinder 18 are both arranged vertically, and the mounting plate 11 is a rectangular plate structure and is arranged horizontally.

[0031] The stabilizing mechanism includes a stabilizing rod 6 and a gear 8. A support plate 7 is fixed to the top of the base plate 2. The stabilizing rod 6 rotates horizontally through the top of the support plate 7. The gear 8 is fixedly installed at both ends of the stabilizing rod 6. A meshing groove 19 is provided on the side of the guide cylinder 18 near the gear 8. A toothed bar 10 is provided on the surface of the lifting column 17. The side of the gear 8 passes through the meshing groove 19 and is meshed and driven to be connected with the toothed bar 10.

[0032] The support plate 7 is vertically arranged on one side of the lifting cylinder 9, the meshing groove 19 is a rectangular groove structure, and the toothed bar 10 is vertically arranged.

[0033] The mounting plate 11, the hip joint femoral prosthesis moving mechanism and the acetabulum clamping and fixing frame 15 are driven to rise and move to the acetabulum through the smooth lifting mechanism. In the smooth lifting mechanism, the lifting cylinder 9 drives the mounting plate 11 to rise and fall during the process. The gear 8 in the smooth mechanism is meshed and connected with the toothed bar 10 on the surface of the lifting column 17, and the gear 8 is limited by the smooth rod 6 to rotate horizontally and stably, so that the mounting plate 11 can be kept relatively stable during the lifting process, and the heights of the two ends are relatively consistent, with high horizontal accuracy, thereby maintaining accurate alignment between the hip joint femoral prosthesis and the acetabulum, which is beneficial to the safe and stable resetting of the prosthetic joint during artificial hip replacement.

[0034] Finally, the hip joint femoral prosthesis moving mechanism includes a hip joint femoral prosthesis clamping frame 13, a moving plate 14 and an adjusting rod 12. By rotating the adjusting rod 12, the moving plate 14 and the hip joint femoral prosthesis clamping frame 13 are driven to move horizontally and linearly toward the acetabulum clamping fixing frame 15.

[0035] A movable groove 16 is opened in the middle of the mounting plate 11, and the movable plate 14 is fixedly mounted on the bottom end of the hip joint femoral prosthesis clamping frame 13, and its bottom end is slidably inserted into the movable groove 16. The adjusting rod 12 is threaded through the threaded hole reserved at one end of the mounting plate 11 and inserted into the movable groove 16. Its inner end is rotatably mounted and connected with the bottom end of the movable plate 14, and the hip joint femoral prosthesis clamping frame 13 moves along the movable groove 16 toward the acetabulum clamping frame 15.

[0036] The acetabulum clamping fixture 15 is installed at one end of the mounting plate 11 and is close to the position requiring surgery. At the same time, the hip-joint femoral prosthesis is clamped at the top of the hip-joint femoral prosthesis clamping fixture 13. By rotating the adjusting rod 12, the movable plate 14 and the hip-joint femoral prosthesis clamping fixture 13 are driven to move along the horizontal straight line of the movable groove 16 toward the acetabulum clamping fixture 15, thereby keeping the hip-joint femoral prosthesis moving and accurately aligning with the acetabulum, accurately resetting the artificial hip replacement, reducing bumps and friction, and reducing the patient's pain.

[0037] The hip joint femoral prosthesis clamping frame 13 and the acetabulum clamping and fixing frame 15 are both vertically mounted on the top of the mounting plate 11 and horizontally aligned with each other.

[0038] The cross-sections of the moving groove 16 and the moving plate 14 are both T-shaped structures, and are slidably connected to each other. The moving plate 14 is vertically arranged, and the adjusting rod 12 is a threaded rod structure and is horizontally arranged.

[0039] Working method: The base plate 2 is installed on the top of the operating bed frame 1 through the connecting plate 4 and the clamping plate 20, and is close to the surgical position. The mounting plate 11, the hip joint femoral prosthesis moving mechanism and the acetabulum clamping and fixing frame 15 are driven to rise and move to the acetabulum through the smooth lifting mechanism. In the smooth lifting mechanism, the lifting cylinder 9 drives the mounting plate 11 to rise and fall, and the gear 8 in the smooth mechanism is meshed and connected with the toothed bar 10 on the surface of the lifting column 17, and the gear 8 is limited by the smooth rod 6 to rotate horizontally and stably, so that the mounting plate 11 can be kept relatively stable during the lifting process, and the heights of the two ends are relatively consistent, with high horizontal accuracy, so as to keep the hip joint femoral prosthesis and the acetabulum accurately aligned, which is beneficial to the safe and stable resetting of the prosthetic joint in artificial hip replacement.

[0040] The acetabulum clamping fixture 15 is installed at one end of the mounting plate 11 and is close to the position requiring surgery. At the same time, the hip-joint femoral prosthesis is clamped at the top of the hip-joint femoral prosthesis clamping fixture 13. By rotating the adjusting rod 12, the movable plate 14 and the hip-joint femoral prosthesis clamping fixture 13 are driven to move along the horizontal straight line of the movable groove 16 toward the acetabulum clamping fixture 15, thereby keeping the hip-joint femoral prosthesis moving and accurately aligning with the acetabulum, accurately resetting the artificial hip replacement, reducing bumps and friction, and reducing the patient's pain.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A prosthetic joint reducer for artificial hip replacement, comprising an operating table frame (1) and a bottom plate (2) mounted on the top thereof, characterized in that: The base plate (2) is detachably fastened and slidably mounted on the top of the operating bed frame (1); a clamping and mounting mechanism is mounted on the bottom end of the base plate (2); a smooth lifting mechanism is mounted on the top end of the base plate (2); a hip joint femoral prosthesis moving mechanism and an acetabulum clamping and fixing frame (15) are mounted on the top end of the smooth lifting mechanism; The clamping and mounting mechanism comprises a connecting plate (4) and a clamping plate (20), which are respectively fixedly mounted on two sides of the operating bed frame (1); the connecting plate (4) is fixedly mounted on the bottom end of the base plate (2); The smooth lifting mechanism comprises a lifting cylinder (9), a lifting column (17) and a stabilizing mechanism, wherein the lifting cylinder (9) is fixedly mounted on the top of the base plate (2), a mounting plate (11) is fixedly mounted on the top of the lifting cylinder (9), the lifting column (17) is fixedly mounted on the bottom ends of both ends of the mounting plate (11), guide cylinders (18) are fixed on both ends of the base plate (2), the lifting column (17) slides through the guide cylinders (18), and the stabilizing mechanism is mounted on one side of the two guide cylinders (18); The stabilizing mechanism comprises a stabilizing rod (6) and a gear (8); a support plate (7) is fixed to the top of the base plate (2); the stabilizing rod (6) rotates horizontally and passes through the top of the support plate (7); the gear (8) is fixedly mounted on both ends of the stabilizing rod (6); a meshing groove (19) is provided on the side of the guide cylinder (18) and close to the gear (8); a toothed bar (10) is provided on the surface of the lifting column (17); the side of the gear (8) passes through the meshing groove (19) and is meshed and drivenly connected with the toothed bar (10); The hip joint femoral prosthesis moving mechanism comprises a hip joint femoral prosthesis clamping frame (13), a moving plate (14) and an adjusting rod (12), and the moving plate (14) and the hip joint femoral prosthesis clamping frame (13) are driven to move horizontally and linearly toward the acetabulum clamping fixing frame (15) by rotating the adjusting rod (12).

2. A prosthetic joint reducer for artificial hip replacement according to claim 1, characterized in that: A movable groove (16) is provided in the middle of the mounting plate (11); the movable plate (14) is fixedly mounted on the bottom end of the hip joint femoral prosthesis clamping frame (13); the bottom end thereof is slidably inserted into the movable groove (16); the adjusting rod (12) is threadedly passed through a threaded hole reserved at one end of the mounting plate (11) and inserted into the movable groove (16); the inner end thereof is rotatably mounted and connected to the bottom end of the movable plate (14); the hip joint femoral prosthesis clamping frame (13) moves along the movable groove (16) toward the acetabulum clamping frame (15).

3. The prosthetic joint reducer for artificial hip replacement according to claim 1, characterized in that: A guide rod (3) is fixed on the inner side of the clamping plate (20), and the guide rod (3) passes through a through hole reserved on the side of the connecting plate (4). A threaded fastening rod (5) passes through the middle rotation of the connecting plate (4), and the inner end of the threaded fastening rod (5) is connected to the middle rotation installation of the clamping plate (20).

4. A prosthetic joint reducer for artificial hip replacement according to claim 3, characterized in that: The base plate (2) is arranged horizontally, the connecting plate (4) and the clamping plate (20) are both rectangular structures and are arranged vertically, and the guide rod (3) and the threaded fastening rod (5) are both arranged horizontally at the bottom end of the operating bed frame (1).

5. The prosthetic joint reducer for artificial hip replacement according to claim 1, characterized in that: The lifting cylinder (9) and the guide cylinder (18) are both arranged vertically, and the mounting plate (11) is a rectangular plate structure and is arranged horizontally.

6. The prosthetic joint reducer for artificial hip replacement according to claim 1, characterized in that: The support plate (7) is vertically arranged on one side of the lifting cylinder (9), the meshing groove (19) is a rectangular groove structure, and the toothed bar (10) is vertically arranged.

7. The prosthetic joint reducer for artificial hip replacement according to claim 1, characterized in that: The hip joint femoral prosthesis clamping frame (13) and the acetabulum clamping and fixing frame (15) are both vertically mounted on the top of the mounting plate (11) and are horizontally aligned with each other.

8. The prosthetic joint reducer for artificial hip replacement according to claim 2, characterized in that: The cross-sections of the movable groove (16) and the movable plate (14) are both T-shaped structures and are slidably connected to each other by snapping. The movable plate (14) is vertically arranged, and the adjustment rod (12) is a threaded rod structure and is horizontally arranged.

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