An artificial prosthetic assembly for ankle arthroplasty surgery

Abstract

The application provides an artificial prosthesis assembly for ankle replacement surgery, and belongs to the technical field of ankle prosthesis. The artificial prosthesis assembly comprises a talus arc plate, a circular arc guide rail is arranged on the top of the talus arc plate, a rivet is arranged in the interior of the talus arc plate, a joint soft plate is slidably connected to the top of the circular arc guide rail, and a tibial mounting plate is arranged above the joint soft plate; a rivet fixing assembly is arranged on the top of the tibial mounting plate. The elastic adjusting assembly and the sliding lubricating assembly are arranged, so that the contact area with the bone tissue is significantly increased, the initial stability of the prosthesis is enhanced, the risk of prosthesis separation is reduced, the prosthesis modulus is dynamically matched with the bone elasticity of the patient through the regulation of the elastic relaxation degree of the prosthesis, the risk of stress concentration of the prosthesis bone interface is reduced, the success rate of bone integration is improved, meanwhile, the prosthesis activity resistance is reduced through the ball lubrication, material fatigue and loss caused by dry friction between the prostheses are avoided, and the service life of the prosthesis is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of ankle joint prostheses, and in particular to an artificial prosthesis component used in ankle joint replacement surgery. Background Art

[0002] Artificial joint replacement refers to the use of metal, high-molecular polyethylene, ceramics and other materials to make artificial joint prostheses according to the shape, structure and function of human joints. They are implanted into the human body through surgical techniques to replace the function of diseased joints, thereby relieving joint pain and restoring joint function.

[0003] Ankle prosthesis is an artificial device used to replace a damaged ankle joint to restore joint function. It is usually used to treat diseases such as ankle fractures, osteoarthritis, rheumatoid arthritis, infections or tumors. The talus in the ankle joint is the hub connecting the leg and foot, shouldering the coupling of gravity transmission and movement, and is an important functional unit of the foot.

[0004] Existing ankle joint prosthesis replacement surgery uses trapezoidal osteotomy combined with pins to fix the talus and tibia. However, there is a high risk of pin loosening and insufficient bone contact area resulting in a low friction coefficient, which can easily cause prosthesis separation during foot flexion, extension and torsion movements. At the same time, the insufficient elastic modulus of the prosthesis exacerbates friction and buffering load on the talus, causing postoperative pain and hindering recovery. The elastic mismatch causes stress to concentrate on the prosthesis-bone interface, weakening bone integration ability and stability. In addition, due to the lack of a lubrication mechanism during long-term use, friction between prostheses increases, freedom of movement is restricted, wear resistance and durability decrease, and the service life is significantly shortened.

[0005] Therefore, the present application provides an artificial prosthesis assembly for ankle replacement surgery to meet the needs. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an artificial prosthesis component for ankle replacement surgery to solve the problems of high risk of loosening of the pins when connecting the talus and tibia, insufficient bone contact area, easy separation of the prosthesis, insufficient elastic modulus of the prosthesis, aggravated bone friction and buffering load, hindering recovery, and long-term lack of lubrication mechanism, limited freedom, reduced wear resistance and shortened prosthesis life.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] An artificial prosthesis component for ankle replacement surgery includes a talar arc plate, a circular arc guide rail is installed on the top of the talar arc plate, a rivet is installed inside the talar arc plate, the top of the circular arc guide rail is slidably connected to an articular soft plate, and a tibial mounting plate is installed above the articular soft plate; a rivet fixing component is installed on the top of the tibial mounting plate, and the rivet fixing component is used to be fixedly connected to the tibia and talus; an elastic adjustment component is installed on the top of the articular soft plate, and the elastic adjustment component is used to adjust the elasticity of the device according to the patient's bone condition; the inside of the talar arc plate is slidably connected to a sliding lubrication component, and the sliding lubrication component is used to realize the movement of articular cartilage in the talar arc plate; the rivet fixing component is installed on the top of the elastic adjustment component, and the elastic adjustment component is installed on the top of the sliding lubrication component; the tibial mounting plate is groove-shaped, and openings are provided at both ends of the tibial mounting plate.

[0009] Optionally, the rivet fixing assembly includes a perforated brim, which is installed at the bottom of the tibial mounting plate groove, and a perforated rivet body is installed on the top of the perforated brim, which passes through the interior of the tibial mounting plate, and a nail core is slidably connected to the interior of the perforated rivet body, and the nail core passes through the interior of the perforated brim.

[0010] Optionally, a nail core head is installed on the top of the nail core, a honeycomb cone is installed on the top of the tibial mounting plate, and a frame box is installed on the bottom of the tibial mounting plate.

[0011] Optionally, the elastic adjustment component includes a mounting seat, which is installed on the top of the joint soft plate. A spring is installed inside the mounting seat, and a connecting plate is installed on the top of the spring. The connecting plate and the mounting seat are respectively fixed to both ends of the spring.

[0012] Optionally, a plurality of slide groove frames are installed on the top of the connecting plate, a slideway is provided inside the slide groove frame, a first roller is slidably connected inside the slide groove frame, and one end of the first roller is sleeved with a double-head connecting plate.

[0013] Optionally, one end of the double-headed connecting plate is sleeved with a second roller, and one end of multiple second rollers is rotatably connected to a rotating shaft frame. One end of the rotating shaft frame is installed with a threaded rotating rod, and the bottom of the threaded rotating rod is fixedly connected to the rotating shaft frame. The surface of the threaded rotating rod is threadedly connected to a bolt knob, and an annular slide is opened inside the bolt knob, and the annular slide is limited to the rotating rod.

[0014] Optionally, the top of the threaded rotating rod is slidably installed inside the through-seat, the top of the through-seat is connected to the inner wall of the frame box, one end of the through-seat is installed with a bracket plate, the bottom of the bracket plate is installed with a rotating rod, and the bottom of the rotating rod is rotatably connected to the bolt knob.

[0015] Optionally, the sliding lubrication assembly includes a stretching rod, which is installed at the bottom of the joint soft plate. A sleeve is sleeved at the bottom of the stretching rod, and an opening is provided on the outer surface of the sleeve. A support rod is installed at the bottom of the stretching rod, and the support rod passes through the opening on the outer surface of the sleeve.

[0016] Optionally, a connecting buckle is installed at the bottom of the sleeve, a hole is provided at the top of the connecting buckle, a ball is slidably connected to the inner wall of the connecting buckle, and an oil storage blade box is installed at the top of the connecting buckle.

[0017] Optionally, a seal is installed on the top of the oil storage blade box, a piston cylinder is installed at one end of the seal, the top of the piston cylinder is slidably connected to an extrusion rod, and the top of the extrusion rod is connected to the bottom of the support rod.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] In the above scheme, by providing a rivet fixation component, the porous structure design of the rivet brim can significantly increase the contact area with bone tissue, reduce the pressure per unit area, and minimize the risk of bone resorption. This design forms an anchoring effect through mechanical interlocking with the trabeculae, enhancing the initial stability of the prosthesis and reducing the risk of micro-dissociation during movement. Stress distribution is improved, and the multi-point support formed by the brim perforations can transform the linear stress of traditional pins into a mesh distribution, reducing stress concentration on bone ingrowth in the distal tibia and talus. It promotes the interlocking of the microporous structure on the rivet surface with the bone tissue, providing channels for blood vessels and bone cells to grow, and promoting bone fixation. In addition, the perforation distribution pattern can be customized through 3D printing, and the perforation density can be differentiated for different bone density areas to achieve a reduction in osteotomy. The brim can reduce the scope of bone resection, preserve more host bone mass, and reserve bone reserves for long-term revision, resulting in a reduced risk of infection. The porous structure promotes local revascularization, and the antibiotic bone cement can form a sustained-release system through the perforations, further reducing the incidence of deep infection.

[0020] By setting up an elastic adjustment component and regulating the spring tension, the prosthesis modulus is dynamically matched to the patient's bone elasticity, reducing the risk of stress concentration at the prosthesis-bone interface, reducing stress, and improving the success rate of bone integration. The dynamic adjustment of the elastic modulus can more evenly distribute the load on the talus and reduce the risk of bone resorption caused by micro-motion at the interface.

[0021] At the same time, spring preload adjustment can adapt to different bone densities to promote bone integration and long-term stability. In addition, the cushioning of the elastic adjustment component can absorb the impact load during walking, significantly alleviating movement pain, and the relatively adaptive elastic adjustment also extends the service life of the prosthesis. By providing a sliding lubrication component, the interfacial friction coefficient is reduced. The ball structure converts sliding friction into rolling friction, reducing the resistance to prosthesis movement and reducing polyethylene gasket wear. At the same time, the oil storage vane box releases lubricant through squeezing, forming a continuous oil film on the inner wall of the prosthesis, avoiding material fatigue and loss caused by dry friction between the prostheses, and extending the service life of the prosthesis. In addition, the rolling lubrication mechanism enables the lubricant replenishment system to delay the release of metal ions, reduce the risk of osteolysis, and improve joint freedom of movement. At the same time, the multi-directional ball design increases the dorsiflexion / plantar flexion angles of the ankle joint, closer to the physiological range of motion. The dynamic lubrication system can also adapt to high-intensity activities, reduce abnormal stress concentration in the prosthesis, and improve the stability of the prosthesis-bone interface. The lubrication component shares shear force, reducing the risk of prosthesis loosening and the need for revision surgery, increasing the service life of the prosthesis and accelerating recovery time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0023] Figure 1 This is a schematic diagram of the main three-dimensional structure of an artificial prosthesis component used in ankle joint replacement surgery according to the present invention;

[0024] Figure 2 This is a schematic front view of the structure of an artificial prosthesis assembly for ankle replacement surgery according to the present invention;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the artificial prosthesis assembly used for ankle replacement surgery from another perspective of the present invention;

[0026] Figure 4 This is a three-dimensional structural diagram of the positional relationship between the joint soft plate and the arc-shaped guide rail of the present invention;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the rivet fixing assembly of the present invention;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the frame box of the present invention;

[0029] Figure 7 This is a schematic diagram of the internal three-dimensional structure of the frame box of the present invention;

[0030] Figure 8This is a schematic diagram of the three-dimensional structure of the elastic adjustment component of the present invention;

[0031] Figure 9 This is a schematic diagram of the three-dimensional structure of the first roller and the slide frame of the present invention;

[0032] Figure 10 This is a schematic diagram of the three-dimensional structure of the positional relationship between the ball and the talar arc plate of the present invention;

[0033] Figure 11 It is a schematic diagram of the three-dimensional structure of the sliding lubrication component of the present invention.

[0034] Reference numerals:

[0035] 1. Talus arc plate; 2. Arc guide rail; 3. Rivet; 4. Articular soft plate; 5. Tibial mounting plate;

[0036] 6. Rivet fixing assembly; 61. Perforated brim; 62. Perforated rivet body; 63. Nail core; 64. Nail core head; 65. Honeycomb cone; 66. Frame box;

[0037] 7. Elastic adjustment assembly; 71. Mounting seat; 72. Spring; 73. Connecting plate; 74. Slide frame; 75. First roller; 76. Double-end connecting plate; 77. Second roller; 78. Rotating shaft frame; 79. Threaded rotating rod; 710. Bolt knob; 711. Through seat; 712. Bracket plate; 713. Rotating rod;

[0038] 8. Sliding lubrication assembly; 81. Extension rod; 82. Sleeve; 83. Connecting buckle; 84. Ball; 85. Oil storage vane box; 86. Seal; 87. Support rod; 88. Extrusion rod; 89. Piston cylinder.

[0039] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0040] The following describes in detail an artificial prosthesis assembly for ankle replacement surgery provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known techniques. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0041] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0042] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0043] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0044] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0045] like Figures 1 to 11As shown, an embodiment of the present invention provides an artificial prosthesis component for ankle joint replacement surgery, including a talar arc plate 1, a circular arc guide rail 2 is installed on the top of the talar arc plate 1, a rivet 3 is installed inside the talar arc plate 1, an articular soft plate 4 is slidably connected to the top of the circular arc guide rail 2, and a tibial mounting plate 5 is installed above the articular soft plate 4; a rivet fixing component 6 is installed on the top of the tibial mounting plate 5, and the rivet fixing component 6 is used to be fixedly connected to the tibia and talus; an elastic adjustment component 7 is installed on the top of the articular soft plate 4, and the elastic adjustment component 7 is used to adjust the elasticity of the device according to the patient's bone condition; the inside of the talar arc plate 1 is slidably connected to the sliding lubrication component 8, and the sliding lubrication component 8 is used to realize the movement of the articular soft plate 4 in the talar arc plate 1; the rivet fixing component 6 is installed on the top of the elastic adjustment component 7, and the elastic adjustment component 7 is installed on the top of the sliding lubrication component 8, the tibial mounting plate 5 is groove-shaped, and openings are provided at both ends of the tibial mounting plate 5.

[0046] like Figures 3 to 6 As shown, the rivet fixing assembly 6 includes a perforated brim 61, which is installed at the bottom of the groove of the tibial mounting plate 5. A perforated rivet body 62 is installed on the top of the perforated brim 61. The perforated rivet body 62 passes through the interior of the tibial mounting plate 5. The interior of the perforated rivet body 62 is slidably connected with a nail core 63, which passes through the interior of the perforated brim 61. A nail core head 64 is installed on the top of the nail core 63, a honeycomb cone 65 is installed on the top of the tibial mounting plate 5, and a frame box 66 is installed on the bottom of the tibial mounting plate 5.

[0047] When the tibial mounting plate 5 is installed, the rivet fixing assembly 6 begins to fix the tibial mounting plate 5. At this time, the surface of the honeycomb cone 65 is coated with bone growth promoting material, and then the honeycomb cone 65 is inserted into the tibia through the hole drilled inside the tibia when the tibial mounting plate 5 is connected to the tibia. Then, the perforated rivet body 62 is inserted into the hole inside the tibia through the tibial mounting plate 5. At this time, the rivet core head 64 follows the perforated rivet body 62 into the bone. At this time, the perforated cap brim 61 is close to the inner wall of the tibial mounting plate 5.

[0048] Then, the medical staff uses a tool to pull the nail core 63. Since the nail core head 64 is larger than the caliber of the perforated rivet body 62, when the nail core 63 is pulled, the nail core head 64 begins to enter the interior of the perforated rivet body 62 from the end of the perforated rivet body 62. Then, the perforated rivet body 62 is filled and expanded by the nail core head 64, and fits tightly with the internal tissue of the bone. At the same time, the bone growth material applied on the surface of the perforated rivet body 62 also fits the surface of the internal bone. The honeycomb porous design of the perforated rivet body 62 increases the contact area with the bone tissue, reduces the single-point pressure, promotes the growth of bone tissue, and enhances the stability of the prosthesis. Then, after the tibial mounting plate 5 is installed, the frame box 66 is bolted to the bottom of the tibial mounting plate 5. After the two are fixedly connected, the elastic adjustment component 7 starts to operate.

[0049] like Figures 4 to 9 As shown, the elastic adjustment component 7 includes a mounting seat 71, which is mounted on the top of the joint soft plate 4, a spring 72 is installed inside the mounting seat 71, and a connecting plate 73 is installed on the top of the spring 72. The connecting plate 73 and the mounting seat 71 are respectively fixed to the two ends of the spring 72, and a plurality of slide frames 74 are installed on the top of the connecting plate 73. A slide is provided inside the slide frame 74, and a first roller 75 is slidably connected to the inside of the slide frame 74. One end of the first roller 75 is sleeved with a double-headed connecting plate 76, and one end of the double-headed connecting plate 76 is sleeved with a second roller 77. One end of the plurality of second rollers 77 are connected to rotate together There is a rotating shaft frame 78, and a threaded rotating rod 79 is installed at one end of the rotating shaft frame 78. The bottom of the threaded rotating rod 79 is fixedly connected to the rotating shaft frame 78. The surface of the threaded rotating rod 79 is threadedly connected with a bolt knob 710. An annular slide is provided inside the bolt knob 710, and the annular slide is limited to the rotating rod 713. The top of the threaded rotating rod 79 is slidably installed inside the through-base 711. The top of the through-base 711 is connected to the inner wall of the frame box 66. A bracket plate 712 is installed at one end of the through-base 711, and a rotating rod 713 is installed at the bottom of the bracket plate 712. The bottom of the rotating rod 713 is rotatably connected to the bolt knob 710.

[0050] After the frame box 66 is installed, the elastic adjustment component 7 is adjusted. First, the elasticity of the spring 72 installed on the top of the joint soft plate 4 is adjusted. According to the patient's own bone hardness, the cushioning force of the joint surface under the connection between the talus and the tibia is obtained in a good state. Then, the adjustment bolt knob 710 is rotated. When the bolt knob 710 is rotated, the threaded rotating rod 79 starts to move at the center of the bolt knob 710. At this time, the movement of the threaded rotating rod 79 will drive the rotating shaft frame 78 installed at the bottom to move together. The movement of the rotating shaft frame 78 causes the second roller 77 connected to the rotating shaft frame 78 to move synchronously with the threaded rotating rod 79, and at the same time, the second roller 77 inside the rotating shaft frame 78 moves synchronously with the threaded rotating rod 79. The second wheel 77 is rotated, and then the movement of the second roller 77 drives the double-headed connecting plate 76 to move along with the second roller 77. When the double-headed connecting plate 76 moves, the first roller 75 installed at the other end slides inside the slide frame 74, and the movement of the double-headed connecting plate 76 affects whether the spring 72 is stretched or contracted. Therefore, the rotation of the bolt knob 710 drives the threaded rotating rod 79 to move vertically inside the through-seat 711, and is affected by the bracket plate 712 installed at one end of the through-seat 711, so that the rotating rod 713 installed at the bottom of the bracket plate 712 rotates inside the bolt knob 710, so that the bolt knob 710 can only rotate on its own but cannot move.

[0051] At the same time, the movement of the double-headed connecting plate 76 drives the connecting plate 73 to move. When the connecting plate 73 is forced to move, the spring 72 installed at the bottom of the connecting plate 73 moves. Since the other end of the spring 72 is fixed in the mounting seat 71, and the mounting seat 71 is fixed on the top of the joint soft plate 4, the spring 72 is now adjusted by the movement of the threaded rotating rod 79 to adjust the elastic force. According to the stretching or contraction of the spring 72, it adjusts to the patient's own elastic stress situation, simulates the stress environment that best fits the patient himself, improves adaptability, accelerates the recovery process, and provides conditions for bone growth.

[0052] like Figures 6 to 11 As shown, the sliding lubrication assembly 8 includes a stretching rod 81, which is installed at the bottom of the joint soft plate 4. The bottom of the stretching rod 81 is sleeved with a sleeve 82, and the outer surface of the sleeve 82 is provided with an opening. The bottom of the stretching rod 81 is installed with a support rod 87, and the support rod 87 passes through the opening on the outer surface of the sleeve 82. The bottom of the sleeve 82 is installed with a connecting buckle 83, and the top of the connecting buckle 83 is provided with a hole. The inner wall of the connecting buckle 83 is slidably connected with a ball 84, and the top of the connecting buckle 83 is installed with an oil storage blade box 85. The top of the oil storage blade box 85 is installed with a seal 86, and one end of the seal 86 is installed with a piston cylinder 89. The top of the piston cylinder 89 is slidably connected with an extrusion rod 88, and the top of the extrusion rod 88 is connected to the bottom of the support rod 87.

[0053] When the elastic adjustment component 7 is adjusted, the sliding lubrication component 8 starts to operate. When the joint soft plate 4 is installed, the ball 84 is rollingly connected to the talar arc plate 1 and rolls inside the talar arc plate 1. Since the ball 84 is slidingly connected to the connecting buckle 83, when the ball 84 rolls under force, the connecting buckle 83 and the ball 84 cannot be separated. The connecting buckle 83 adjusts the twisting direction on the joint soft plate 4 according to the direction of force, and due to the characteristics of the ball 84's own structure, the flipping angle is large, so that when the patient moves the ankle joint, the free angle is more in line with the actual movement.

[0054] At the same time, the movement of the connecting buckle 83 drives the sleeve 82 to move together. When the talus is not squeezed, the stretching rod 81 extends out of the sleeve 82. Then, when the stretching rod 81 is outside the sleeve 82, the support rod 87 installed at the bottom of the stretching rod 81 drives the extrusion rod 88 to move upward together. At this time, the upward-moving extrusion rod 88 extends from the inside of the piston cylinder 89. When the tibia moves, it is squeezed. At the same time, the articular soft plate 4 squeezes the stretching rod 81. Then, the stretching rod 81 drives the support rod 87 installed at the bottom to move downward together. At this time, the extrusion rod 88 is squeezed into the inside of the piston cylinder 89, and then the oil stored in the oil storage vane box 85 through the seal 86 is squeezed out from the bottom of the oil storage vane box 85. Since the oil outlet opened at the bottom of the oil storage vane box 85 is at the same position as the hole opened on the surface of the connecting buckle 83, the outflowing oil flows through the hole opened on the surface of the connecting buckle 83 to the inner wall of the connecting buckle 83. At this time, the rotating ball 84 will contact the oil.

[0055] The workflow of the technical solution provided by the present invention is as follows:

[0056] During the operation, disinfection and cleaning are first carried out, and then the positioner is installed to ensure that the angle during the operation is correct. Then, a part of the tibia and talus is cut off to form a trapezoidal cross-section. Then, the tibia is processed and holes are drilled obliquely inside the bone to facilitate the fixation of the rivet fixing component 6 on the bone surface. Then, the talar surface is cut again, and then the surface of the tibial mounting plate 5 is coated with an artificial material that promotes bone growth, and then the tibial surface is installed. Subsequently, the surface of the talar arc plate 1 is coated with an artificial material that promotes bone growth, and then the talar surface is installed and fixed with rivets 3. Then the rivet fixing component 6 starts to operate.

[0057] When the tibial mounting plate 5 is installed, the rivet fixing assembly 6 starts to fix the tibial mounting plate 5. At this time, the surface of the honeycomb cone 65 is coated with bone growth promoting material, and then the honeycomb cone 65 is inserted into the inside of the tibia through the hole punched inside the tibia. When the tibial mounting plate 5 is connected to the tibia, the honeycomb cone 65 is inserted into the inside of the tibia together, and then the perforated rivet body 62 is penetrated into the hole inside the tibia through the tibial mounting plate 5. At this time, the core nail head 64 follows the perforated rivet body 62 to enter the bone together. At this time, the perforated cap 61 is close to the inner wall of the tibial mounting plate 5. Then the medical staff pulls the core nail 63 with a tool. Since the core nail head 64 is larger than the diameter of the perforated rivet body 62, when the nail is When the core 63 is pulled, the core head 64 begins to enter the interior of the perforated rivet body 62 from the end of the perforated rivet body 62. Then, the perforated rivet body 62 is filled and expanded by the core head 64, and fits tightly with the internal tissue of the bone. At the same time, the bone growth material coated on the surface of the perforated rivet body 62 also fits the surface of the internal bone. The honeycomb porous design of the perforated rivet body 62 increases the contact area with the bone tissue, reduces the single-point pressure, promotes the growth of bone tissue, and enhances the stability of the prosthesis. Then, after the tibial mounting plate 5 is installed, the frame box 66 is bolted to the bottom of the tibial mounting plate 5. After the two are fixedly connected, the elastic adjustment component 7 starts to operate.

[0058] When the screw threaded rod 710 is rotated, the threaded rotating rod 79 starts to move at the center of the screw threaded rotating rod 710. At this time, the movement of the threaded rotating rod 79 will drive the shaft frame 78 installed at the bottom to move together, and the movement of the shaft frame 78 causes the second roller 77 connected to the shaft frame 78 to move synchronously with the threaded rotating rod 79 and rotate inside the shaft frame 78. Then, the movement of the second roller 77 drives the double-headed connecting plate 76 to move together with the second roller 77. When the double-headed connecting plate 76 moves, the first roller 75 installed at the other end slides inside the slide frame 74, and the movement of the double-headed connecting plate 76 affects the spring 72 When the cam 712 is in the closed position, the cam 713 is rotated to rotate in the closed position, so that the cam 713 can not move, and the cam 713 can not move.

[0059] When the elastic adjustment component 7 is adjusted, the sliding lubrication component 8 starts to operate. When the joint soft plate 4 is installed, the ball 84 is rollingly connected to the talar arc plate 1 and rolls inside the talar arc plate 1. Since the ball 84 is slidingly connected to the connecting buckle 83, when the ball 84 rolls under force, the connecting buckle 83 and the ball 84 cannot be separated. The connecting buckle 83 adjusts the twisting direction on the joint soft plate 4 according to the direction of force, and due to the characteristics of the ball 84's own structure, the flipping angle is large, so that when the patient moves the ankle joint, the free angle is more in line with the actual movement.

[0060] At the same time, the movement of the connecting buckle 83 drives the sleeve 82 to move together. When the talus is not squeezed, the stretch rod 81 extends out of the sleeve 82, and then when the stretch rod 81 is outside the sleeve 82, the support rod 87 installed at the bottom of the stretch rod 81 drives the squeezing rod 88 to move upward together. At this time, the upward-moving squeezing rod 88 extends from the inside of the piston cylinder 89, and when the tibia moves, it is squeezed. At the same time, the joint soft plate 4 squeezes the stretch rod 81, and then the stretch rod 81 drives the support rod 87 installed at the bottom to move downward together. At this time, the extrusion rod 88 is squeezed into the piston cylinder 89, and then the oil stored in the oil storage blade box 85 is squeezed through the seal 86 and flows out from the bottom of the oil storage blade box 85. Since the oil outlet at the bottom of the oil storage blade box 85 is consistent with the position of the hole on the surface of the connecting buckle 83, the outflowing oil flows to the inner wall of the connecting buckle 83 through the hole on the surface of the connecting buckle 83. At this time, the rotating ball 84 will come into contact with the oil to improve lubrication, avoid excessive wear, increase the service life of the device, and complete the operation of the device.

[0061] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An artificial prosthesis assembly for ankle replacement surgery, characterized in that: The talar arc plate comprises a circular arc guide rail installed on the top of the talar arc plate, a rivet installed inside the talar arc plate, an articular soft plate slidably connected to the top of the circular arc guide rail, and a tibial mounting plate installed above the articular soft plate; A rivet fixing assembly is installed on the top of the tibial mounting plate, and the rivet fixing assembly is used to be fixedly connected to the tibia and the talus; An elasticity adjustment component is installed on the top of the joint soft plate, and the elasticity adjustment component is used to adjust the elasticity of the device according to the patient's bone condition; The interior of the talar arc plate is slidably connected to a sliding lubrication component, and the sliding lubrication component is used to realize the movement of articular cartilage in the talar arc plate; The rivet fixing assembly is installed on top of the elastic adjustment assembly, and the elastic adjustment assembly is installed on top of the sliding lubrication assembly; The tibial mounting plate is groove-shaped, and both ends of the tibial mounting plate are provided with openings; The rivet fixing assembly includes a perforated brim, which is mounted on the bottom of the groove of the tibial mounting plate. A perforated rivet body is mounted on the top of the perforated brim, which passes through the interior of the tibial mounting plate. A nail core is slidably connected to the interior of the perforated rivet body, and the nail core passes through the interior of the perforated brim. A nail core head is installed on the top of the nail core, a honeycomb cone is installed on the top of the tibial mounting plate, and a frame box is installed on the bottom of the tibial mounting plate; The elasticity adjustment component includes a mounting seat, which is mounted on the top of the joint soft plate. A spring is installed inside the mounting seat, and a connecting plate is installed on the top of the spring. The connecting plate and the mounting seat are respectively fixed to both ends of the spring; A plurality of slide frames are installed on the top of the connecting plate, a slideway is provided inside the slide frame, a first roller is slidably connected inside the slide frame, and one end of the first roller is sleeved with a double-head connecting plate; One end of the double-head connecting plate is sleeved with a second roller, and one end of a plurality of the second rollers is rotatably connected to a rotating shaft frame. One end of the rotating shaft frame is installed with a threaded rotating rod, and the bottom of the threaded rotating rod is fixedly connected to the rotating shaft frame. The surface of the threaded rotating rod is threadedly connected to a bolt knob, and an annular slide is opened inside the bolt knob, and the annular slide is limited to the rotating rod; The top of the threaded rotating rod is slidably installed inside the through-base, the top of the through-base is connected to the inner wall of the frame box, one end of the through-base is installed with a bracket plate, the bottom of the bracket plate is installed with a rotating rod, and the bottom of the rotating rod is rotatably connected to the bolt knob.

2. The artificial prosthesis assembly for ankle replacement surgery according to claim 1, characterized in that: The sliding lubrication assembly includes a stretching rod, which is installed at the bottom of the joint soft plate. A sleeve is sleeved at the bottom of the stretching rod, and an opening is provided on the outer surface of the sleeve. A support rod is installed at the bottom of the stretching rod, and the support rod passes through the opening on the outer surface of the sleeve.

3. The artificial prosthesis assembly for ankle joint replacement surgery according to claim 2, characterized in that: A connecting buckle is installed at the bottom of the sleeve, a hole is provided at the top of the connecting buckle, a ball is slidably connected to the inner wall of the connecting buckle, and an oil storage blade box is installed at the top of the connecting buckle.

4. The artificial prosthesis assembly for ankle joint replacement surgery according to claim 3, characterized in that: A seal is installed on the top of the oil storage blade box, a piston cylinder is installed on one end of the seal, an extrusion rod is slidably connected to the top of the piston cylinder, and the top of the extrusion rod is connected to the bottom of the support rod.

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