Intervertebral fusion cage

Abstract

The invention discloses an intervertebral fusion cage. The problem is solved that the existing intervertebral fusion cage needs to be forcefully driven in in the placing process, and filled broken bones are shaken out of the surface of an indwelling window to cause grafted bone leakage. The intervertebral fusion cage comprises an intervertebral fusion cage main body, wherein the intervertebral fusion cage main body comprises an advancing end, a push-in end and a bone grafting cavity penetrating through the fusion cage main body in the vertical direction, an upper bone grafting window and a lower bone grafting window of the bone grafting cavity are fixedly provided with a closed layer of a mesh structure, one side of the bone grafting cavity is sealed, the other side of the bone grafting cavity is provided with a broken bone implantation opening, the broken bone implantation opening is sealed by the push-in end, a space for accommodating broken bones is formed by a sealing layer of theupper bone grafting window, a sealing layer of the lower bone grafting window and the bone grafting cavity, the push-in end and the middle of the intervertebral fusion cage body are connected in an inserted mode and are locked in an inserted mode through a one-way locking structure. By adopting the structure, the broken bones are sealed in the intervertebral fusion cage after the broken bones areimplanted, the integrity of the broken bones can be guaranteed, and the broken bones are not shaken out during the implantation of the intervertebral fusion cage.

Description

technical field [0001] The invention belongs to the technical field of medical instruments, and in particular relates to an intervertebral fusion device. Background technique [0002] The intervertebral fusion device is mainly used for decompression and fixation of intervertebral body bone graft fusion after discectomy. The intervertebral fusion device is filled with decompressed bone and autogenous bone can increase the fusion rate, so autogenous bone is required to contact the decompressed vertebral body. On the body bone surface, a large window should be left in the fusion cage to meet the needs of bone grafting. [0003] At present, the retention window of the intervertebral fusion device is not closed to allow the filled autologous bone to contact the bone surfaces of the upper and lower vertebral bodies to ensure the fusion effect. However, when the intervertebral fusion cage is implanted between the vertebral bodies, it needs to be driven in hard. It is precisely bec...

AI Technical Summary

Problems solved by technology

[0004] The invention discloses an intervertebral fusion device, which solves the problem that the existing intervertebral fusion device needs to be driven in forcefully, and the filled broken bones will shake off accordingly, resulting in missing bone grafts.

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