Allograft cage capable of inducing DBM (demineralized bone matrix) compound lumbar interbody fusion and supporting tool thereof

Abstract

The invention relates to the field of medical biological implant materials and medical appliances, and particularly relates to an allograft cage capable of inducing DBM (demineralized bone matrix) compound lumbar interbody fusion and a supporting tool thereof. The allograft cage comprises a first allograft cage, a second allograft cage, a third allograft cage and a fourth allograft cage; and the supporting tool comprises a first test specimen block, a second test specimen block, a third test specimen block, a fourth test specimen block, a test specimen holder, an implant holder, a bone pusher and a bone presser. The allograft cage provided by the invention has the characteristics good mechanical strength and biocompatibility, has the shape characteristics meeting a lumbar interbody anatomical structure, and can grow new bones and promote healing.

Description

technical field [0001] The invention relates to the field of medical biological implant materials and medical devices, in particular to the same kind of bone pad and matching tools capable of inducing DBM combined with cervical intervertebral space fusion. Background technique [0002] Cervical spondylosis, cervical disc herniation, cervical spondylolisthesis or fractures are common clinical diseases, and they are also dangerous cases. In severe cases, paraplegia or partial paraplegia may occur. Whether it is cervical spondylosis or traumatic spondylolisthesis and other serious cervical problems, cervical intervertebral fusion surgery is required, that is, bone material is implanted in the cervical intervertebral space to heal the cervical intervertebral space, thereby restoring the stability of the cervical spine and preventing the aggravation of nerve and spinal cord compression. . However, the traditional implantation of the patient's autogenous bone in the intervertebra...

AI Technical Summary

Problems solved by technology

In addition, after the Cage is implanted, its central cavity structure (tubular bone cavity) is perpendicular to the longitudinal axis of the human body, and the thickness of the cortical bone of the Cage is limited, so that the Cage will crack and collapse during the crawling replacement process, which will easily lead to the collapse and narrowing of the intervertebral space. , nerve compression

The Cage was not designed to conform to the physiological curvature of the cervical spine. In addition, the Cage cut into the vertebral body, resulting in angular deformity of the cervical spine in some people.

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