Artificial bionic spine joint structure for artificial cervical intervertebral disc replacement

Abstract

The utility model relates to the technical field of artificial bionic spine joints, and provides an artificial bionic spine joint structure for artificial cervical intervertebral disc replacement, which comprises a first movable plate and a support structure, a second movable plate is mounted on one side of the first movable plate, and mounting structures are mounted on one side of the first movable plate and one side of the second movable plate. A supporting structure is fixed to the bottom end of the first movable plate and the top end of the second movable plate. By arranging the supporting structure, after the first movable plate and the second movable plate are installed, the joint ball is installed in the acetabular opening groove, then the joint ball can rotate in the acetabular opening groove conveniently, and therefore multi-direction movement such as rotation, forward bending and backward stretching between vertebral bodies is allowed to be achieved; and the elastic piece is an elastic supporting piece made of medical memory alloy, so that the buffering and supporting effects are achieved, the stability of the cervical vertebra is kept, and it is guaranteed that the spine joint has the certain motion range and elasticity.

Description

TECHNICAL FIELD

[0001] The utility model relates to artificial bionic spine joint technical field, especially artificial cervical intervertebral disc replacement artificial bionic spine joint structure. BACKGROUND

[0002] Artificial bionic spine joint, as the name implies, is an artificial joint designed to simulate the structure and function of human spine joint. It uses the principle of biomechanics to accurately simulate the motion trajectory and mechanical properties of human spine joint, aiming to provide more natural and flexible joint function for patients. Artificial bionic spine joint is an innovative product combining biomechanical principles and advanced manufacturing technology. Artificial cervical intervertebral disc replacement artificial bionic spine joint structure is a high-precision medical implant device designed to replace diseased cervical intervertebral discs and restore normal function and stability of the cervical spine.

[0003] To this end, the patent with publication number CN211271425U discloses a bionic artificial spine joint, which includes a plurality of fixed units fixed on the vertebral body. At least two fixed units on one side of the spine are arranged along the extension direction of the spine and are sequentially connected. The adjacent two fixed units can bear a large enough force. The overall micro-motion joint structure composed of adjacent two fixed units can support and bend. This application simulates the function of human intervertebral joint, so that the spine installed with the bionic artificial spine joint can bend within a certain angle range while maintaining the height of the intervertebral space, thereby avoiding the problem of spinal rigidity after traditional spinal surgery pedicle internal fixation. The dorsal side of the device arranged between the fixed units symmetrically installed on both sides of the spine is also provided with an outwardly convex fish scale-shaped or overlapping tile-shaped hard protective net to protect the spinal cord in the middle from impact from the dorsal side.

[0004] The bionic artificial spine joint in the above cannot support and buffer the spine during spine movement, making it inconvenient to disperse pressure when the spine joint bears pressure, thereby unable to effectively relieve the patient's pain, improve nerve function, and thus easily cause complications. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a kind of artificial cervical intervertebral disc replacement artificial bionic spine joint structure, to solve the defect that the artificial cervical intervertebral disc replacement artificial bionic spine joint structure of prior art is not convenient for buffering.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: a kind of artificial cervical intervertebral disc replacement artificial bionic spine joint structure, including first movable plate and support structure.

[0007] The first movable plate is provided with a second movable plate on one side, and the first movable plate and the second movable plate are provided with mounting structures on one side;

[0008] The bottom end of the first movable plate is fixed with a support structure at the top end of the second movable plate, the support structure comprises a fixed seat fixed to the bottom end of the first movable plate, the inside of the top end of the second movable plate is fixed with a base plate, the top end of the base plate is fixed with an elastic element, the top end of the elastic element is fixed with a joint ball, and the outside of the joint ball is fixed with a mortise slot in the inside of the fixed seat.

[0009] Preferably, the side view of the first movable plate and the second movable plate is in the shape of "L", the first movable plate and the second movable plate are symmetrically distributed, and the first movable plate and the second movable plate are titanium alloy plates.

[0010] Through the above structure, the first movable plate and the second movable plate are respectively installed between adjacent cones during use, and the first movable plate and the second movable plate are titanium alloy plates, which have high strength, wear resistance and good mechanical properties, can provide stable support and movement function.

[0011] Preferably, the mounting structure comprises a first inclined slot provided on one side of the first movable plate, the second movable plate is provided with a second inclined slot on one side, the inside of the first inclined slot is provided with a first fixed screw, and the inside of the second inclined slot is provided with a second fixed screw.

[0012] Preferably, the first inclined slot and the second inclined slot are inclined, the inclination angle of the first inclined slot and the second inclined slot is 20°, and the first fixed screw and the second fixed screw are made of alumina ceramic material.

[0013] Through the above structure, the inclination angle of the first fixed screw and the second fixed screw is 20° during use, which helps to disperse pressure, enhance stability and flexibility, thereby reducing the risk of wear and damage, and the first fixed screw and the second fixed screw have ultra-high hardness, excellent wear resistance and corrosion resistance, thereby ensuring the strength of the installation of the first movable plate and the second movable plate.

[0014] Preferably, the elastic element is an elastic support made of medical memory alloy, and the joint ball is made of ultra-high molecular weight polyethylene material.

[0015] Through the above structure, the elastic element plays a buffering and supporting role during use, so that the artificial spinal joint can restore to its original state when subjected to external force, maintain the stability of the cervical spine, and the joint ball also has a certain elasticity and buffering effect, which can reduce the friction and impact between the joint surfaces, improve the comfort and service life of the joint.

[0016] Preferably, the socket groove matches with the joint ball, and the joint ball and the fixing base constitute a rotating structure through the socket groove.

[0017] Through the above structure, the joint ball is further facilitated to rotate in the interior of the socket groove in use, so that the intervertebral body is allowed to realize multidirectional movement, such as rotation, forward bending, backward stretching, etc., so that the implanted spinal joint can maintain a certain degree of activity, avoiding the problem of cervical spine stiffness caused by traditional fusion.

[0018] The artificial bionic spinal joint structure for artificial cervical intervertebral disc replacement has the advantages that:

[0019] By setting the mounting structure, the first movable plate and the second movable plate are mounted between adjacent cones, and then the first fixing screw is screwed into the interior of the upper cone through the first oblique slot, and the second fixing screw is screwed into the interior of the lower cone through the second oblique slot, and the first oblique slot and the second oblique slot are both obliquely arranged, and the inclination angle is 20°, which is helpful to disperse pressure, enhance stability and flexibility, thereby reducing the risk of wear and damage.

[0020] By setting the supporting structure, after the first movable plate and the second movable plate are mounted, the joint ball is mounted in the interior of the socket groove, and then the joint ball is facilitated to rotate in the interior of the socket groove, so that the intervertebral body is allowed to realize multidirectional movement, such as rotation, forward bending, backward stretching, etc., and then a certain degree of activity can be maintained, and the elastic support member made of medical memory alloy plays a role of buffering and supporting, maintains the stability of the cervical spine, and ensures that the spinal joint has a certain degree of activity and elasticity. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0022] Figure 2 It is a side view sectional structure schematic view of the utility model;

[0023] Figure 3 It is a Figure 2 It is an enlarged structure schematic view of A in the middle;

[0024] Figure 4 It is a front view sectional structure schematic view of the utility model;

[0025] Figure 5 It is a three-dimensional structure schematic view of the supporting structure of the utility model.

[0026] The reference signs in the drawing are explained as follows: 1, first movable plate; 2, second movable plate; 3, mounting structure; 301, first beveled slot; 302, second beveled slot; 303, first fixing screw; 304, second fixing screw; 4, supporting structure; 401, fixing seat; 402, base plate; 403, elastic member; 404, joint ball; 405, cup-shaped slot. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] Please refer to Figures 1-5 The artificial bionic spinal joint structure for artificial cervical intervertebral disc replacement provided by the present application comprises a first movable plate 1 and a supporting structure 4.

[0029] As shown in Figures 1-3 The first movable plate 1 is provided with a second movable plate 2 on one side thereof. The side view profiles of the first movable plate 1 and the second movable plate 2 are both arranged in an "L" shape. The first movable plate 1 and the second movable plate 2 are symmetrically distributed. The first movable plate 1 and the second movable plate 2 are both made of titanium alloy plate. The first movable plate 1 and the second movable plate 2 are both provided with a mounting structure 3 on one side thereof. The mounting structure 3 comprises a first beveled slot 301 arranged on one side of the first movable plate 1. The second movable plate 2 is provided with a second beveled slot 302 on one side thereof. The first beveled slot 301 is internally provided with a first fixing screw 303. The second beveled slot 302 is internally provided with a second fixing screw 304. The first beveled slot 301 and the second beveled slot 302 are both arranged in an oblique manner. The inclination angle of the first beveled slot 301 and the second beveled slot 302 is 20°. The first fixing screw 303 and the second fixing screw 304 are both made of aluminum oxide ceramic material.

[0030] By installing the first movable plate 1 and the second movable plate 2 between adjacent cones, then making the first fixed screw 303 screw into the inside of the upper cone through the first inclined slot 301, and making the second fixed screw 304 screw into the inside of the lower cone through the second inclined slot 302, the first inclined slot 301 and the second inclined slot 302 are both arranged obliquely, and the inclination angle is 20°, based on the bionics principle, simulating the angle of natural spinal joint, to achieve better biomechanical effect, thereby helping to disperse pressure, enhance stability and flexibility, thereby reducing the risk of wear and damage, and the first fixed screw 303 and the second fixed screw 304 are made of aluminum oxide material, which not only has good biocompatibility, but also has ultra-high hardness, excellent wear resistance and corrosion resistance, thereby ensuring the strength of the installation of the first movable plate 1 and the second movable plate 2.

[0031] Referring to Figure 2 , Figure 4 and Figure 5 , the first movable plate 1 and the second movable plate 2 are fixed with a support structure 4 at the bottom end of the first movable plate 1 and the top end of the second movable plate 2, the support structure 4 includes a fixed seat 401 fixed to the bottom end of the first movable plate 1, a base plate 402 fixed inside the top end of the second movable plate 2, an elastic member 403 fixed to the top end of the base plate 402, an articulating ball 404 fixed to the top end of the elastic member 403, an inner side of the fixed seat 401 is provided with a socket groove 405 outside the articulating ball 404, the elastic member 403 is an elastic support member made of medical memory alloy, the articulating ball 404 is made of ultra-high molecular weight polyethylene material, the socket groove 405 matches the articulating ball 404, and the articulating ball 404 and the fixed seat 401 form a rotating structure through the socket groove 405.

[0032] After the installation of the first movable plate 1 and the second movable plate 2 is completed, the articulating ball 404 is installed inside the socket groove 405, and then the articulating ball 404 is rotated inside the socket groove 405, thereby allowing the intervertebral body to realize multi-directional movement, such as rotation, forward bending, backward stretching, etc., so that the implanted spinal joint can maintain a certain degree of activity, avoiding the problem of cervical spine stiffness caused by traditional fusion surgery, and the bottom end of the articulating ball 404 is provided with an elastic member 403, which is an elastic support member made of medical memory alloy, which plays a buffering and supporting role, so that the artificial spinal joint can restore to its original state when subjected to external force, maintain the stability of the cervical spine, ensure that the spinal joint has a certain degree of activity and elasticity, also has good biocompatibility, can reduce the rejection reaction, and the articulating ball 404 is made of ultra-high molecular weight polyethylene material, has a certain elasticity and buffering effect, can reduce the friction and impact between the joint surfaces, improve the comfort and service life of the joint.

[0033] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An artificial cervical intervertebral disc replacement artificial bionic spinal joint structure, comprising a first movable plate (1) and a support structure (4); Characterized in that: One side of the first movable plate (1) is provided with a second movable plate (2), and one side of the first movable plate (1) and the second movable plate (2) is provided with a mounting structure (3); The bottom end of the first movable plate (1) is fixed with the top end of the second movable plate (2), and the support structure (4) comprises a fixed seat (401) fixed to the bottom end of the first movable plate (1), the inside of the top end of the second movable plate (2) is fixed with a base plate (402), the top end of the base plate (402) is fixed with an elastic member (403), the top end of the elastic member (403) is fixed with a joint ball (404), and the inside of the outside of the joint ball (404) is provided with a socket groove (405).

2. The artificial cervical disc replacement artificial bionic spinal joint structure according to claim 1, characterized in that: The side view of the first movable plate (1) and the second movable plate (2) is in the shape of "L", the first movable plate (1) and the second movable plate (2) are symmetrically distributed, and the first movable plate (1) and the second movable plate (2) are titanium alloy plates.

3. The artificial cervical disc replacement artificial bionic spinal joint structure according to claim 1, characterized in that: The mounting structure (3) comprises a first inclined slot (301) provided on one side of the first movable plate (1), one side of the second movable plate (2) is provided with a second inclined slot (302), the inside of the first inclined slot (301) is provided with a first fixed screw (303), and the inside of the second inclined slot (302) is provided with a second fixed screw (304).

4. The artificial cervical disc replacement artificial bionic spinal joint structure according to claim 3, characterized in that: The first inclined slot (301) and the second inclined slot (302) are inclined, the inclination angle of the first inclined slot (301) and the second inclined slot (302) is 20°, and the first fixed screw (303) and the second fixed screw (304) are made of alumina ceramic material.

5. The artificial cervical disc replacement artificial bionic spinal joint structure according to claim 1, characterized in that: The elastic member (403) is a medical memory alloy elastic support, and the joint ball (404) is made of ultra-high molecular weight polyethylene material.

6. The artificial cervical disc replacement artificial bionic spinal joint structure according to claim 1, characterized in that: The socket groove (405) matches the joint ball (404), and the joint ball (404) and the fixed seat (401) form a rotating structure through the socket groove (405).

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