3D printing self-stabilizing cervical interbody fusion cage
A novel 3D (three-dimensional) printing self-stabilizing cervical interbody fusion cage is provided, including a fusion cage body, circular-arc notches arranged at four corners of a front side surface of the fusion cage body, and threaded openings are formed in interiors of the circular arc notches and screws are correspondingly mounted in the threaded openings. An inner wall of the fusion cage body is of a circular arc structure, and a reserved circular opening is formed in the middle position of the front side surface. Each of the circular arc notches is positioned to form an angle of 45° with a horizontal plane of each of the four corners of the fusion cage body. Screw are self-tapping screws with threads, and the threads of the screws are in fit with threads of the inner walls of the circular arc notches.
1 . A three dimensional (3D) printed self-stabilizing interbody fusion cage, comprising:
a fusion cage body, comprising
a front side surface with four corners, wherein first concave-convex groove plates are mounted at upper and lower positions of the front side surface of the fusion cage body,
wherein circular arc notches are formed in each of the four corners, and wherein interiors of each of the circular arc notches comprise threaded openings, and
wherein a reserved circular opening formed in a middle portion of the front side surface of the fusion cage body, wherein the fusion cage body comprises an inner wall of a circular arc structure, and
a side surface, wherein said side surface comprises a square opening; and
screws mounted in the threaded openings of the fusion cage body, wherein the screws are self-tapping screws with threads, and the threads of the screws are in fit with threads of inner walls of the circular arc notches,
wherein the fusion cage body and the screws are integrally formed by 3D printing.
2 . The novel 3D printing self-stabilizing cervical interbody fusion cage according to claim 1 , wherein each of the circular arc notches is positioned to form an angle of 45° with a horizontal plane of each of four corners of the fusion cage body.
3 . The novel 3D printing self-stabilizing cervical interbody fusion cage according to claim 1 , wherein square grooves are mounted on both sides of the reserved circular opening, and a plurality of triangular grooves are mounted at upper and lower positions of a back surface of the fusion cage body.
4 . The novel 3D printing self-stabilizing cervical interbody fusion cage according to claim 1 , wherein second concave-convex groove plates are mounted at an outer side of a back surface of the fusion cage body.
5 . The novel 3D printing self-stabilizing cervical interbody fusion cage according to claim 1 , wherein a diameter of each of the screws is 2.5 mm, and a length of each of the screws is capable of being selected as required.