Bone trabecular fusion cage
A bone trabecular fusion cage for implanting into an intervertebral disc is disclosed. The fusion cage includes a bone trabecular housing made of titanium alloy powder material with trabecular housing accommodation space therein. A side wall of the bone trabecular housing is provided with a plurality of pores, and sclerotin can grow into the bone trabecular housing through the pores to securely fix the bone trabecular fusion cage in the intervertebral disc; and a liner made of polyether-ether-ketone material and fixed in the accommodating space of the bone trabecular housing, wherein the polyether-ether-ketone liner gpores can provide good elastic modulus of bone. With the product of the present disclosure, bone implantation is not required, the patient recovers fast, and excellent fusion effect can be obtained.
1. A bone trabecular fusion cage for implanting into an intervertebral disc, comprising:
a bone trabecular housing ( 1 ) made of titanium alloy powder material with trabecular housing accommodation space therein, wherein two opposite side walls of the bone trabecular housing each form a hollow mesh structure by a plurality of pores of uniform size, the plurality of pores do not penetrate the two opposite side walls and are configured to allow sclerotin to grow into the bone trabecular housing ( 1 ) through the plurality of pores to securely fix the bone trabecular fusion cage in the intervertebral disc; and
a liner ( 2 ) made of polyether-ether-ketone material, wherein the liner ( 2 ) is fixed in the trabecular housing accommodation space of the bone trabecular housing ( 1 ) and can be fused with the sclerotin grown into the plurality of pores of the bone trabecular housing;
wherein at least one protrusion ( 11 ) is provided on an inner wall of the bone trabecular housing ( 1 ), an outer wall of the liner ( 2 ) is provided with at least one recess matching with the protrusion, and the protrusion of the bone trabecular housing ( 1 ) is embedded in the recess of the liner ( 2 ) to securely connect the bone trabecular housing ( 1 ) and the liner ( 2 ); an upper periphery of the liner ( 2 ) is blanketed by the bone trabecular housing ( 1 ), the protrusion ( 11 ) in the bone trabecular housing ( 1 ) is of beam-shape, and the recess of the liner ( 2 ) has an interference fit with the beam-shaped protrusion of the bone trabecular housing ( 1 ); an appearance of the bone trabecular housing is a smooth transitional curvature, which gradually tapers from middle to both ends; the curvature of an outer contour of the bone trabecular housing ( 1 ) configured to coincide with a cross-sectional curvature of a spinal vertebral body of a patient.
2. The bone trabecular fusion cage of claim 1 , wherein an implantation hole ( 12 ) and an implantation groove ( 13 ) are disposed at one end of the bone trabecular housing, the implantation groove ( 13 ) is disposed on an end face of the bone trabecular housing ( 1 ), the implantation hole ( 12 ) is located in the implantation groove ( 13 ), wherein the bone trabecular fusion cage is configured to be inserted into the intervertebral disc through the intervertebral space for fixation by connection of an implantation surgical tool matching with the implantation hole ( 12 ) and the implantation groove ( 13 ) to the bone trabecular housing ( 1 ).
3. The bone trabecular fusion cage of claim 2 , wherein the bone trabecular housing ( 1 ) has a convex end at one end and a flat end at the other end, and the implantation hole ( 12 ) and the implantation groove ( 13 ) are disposed on the flat end.
4. The bone trabecular fusion cage of claim 2 , wherein the implantation hole ( 12 ) is a threaded hole.
5. The bone trabecular fusion cage of claim 1 , wherein the plurality of pores on the side wall of the bone trabecular housing ( 1 ) form a hollow mesh structure.