Four-way expanding interbody fusion cage

Abstract

The invention relates to the technical field of interbody fusion cage medical instruments, in particular to a four-way expanding interbody fusion cage. The interbody fusion cage is characterized by being composed of a four-way expanding fusion mechanism and a driving spreading mechanism, the four-way expanding fusion mechanism is composed of an upper front spreading plate, a lower front spreadingplate, an upper rear spreading plate and a lower rear spreading plate, the upper front spreading plate is composed of a front side plate and an upper side plate, the lower front spreading plate is composed of a front sliding plate and a lower sliding plate, the upper rear spreading plate is composed of a rear sliding plate and an upper sliding plate, and the lower rear spreading plate is composedof a rear side plate and a lower side plate. The four-way expanding interbody fusion cage has the advantages that by utilizing the spreading force of the interbody fusion cage, the height and tensionof the vertebral joints are restored, the compression is relieved, the physiological curvature of the spine is restored, and the stable four-way expansion of the spine is ensured through the bone fusion of the interbody fusion cage.

Description

technical field [0001] The invention relates to the technical field of intervertebral fusion device medical equipment, in particular to a method of utilizing the distraction force of the intervertebral fusion device to restore the height and tension of the vertebral joints, realize the release of compression, restore the physiological curvature of the spine, and intervertebral fusion Bone fusion, a four-way intervertebral fusion device that ensures spinal stability. Background technique [0002] As we all know, degeneration of the spine is more common in orthopedic clinics. Common degeneration of the intervertebral disc, spinal stenosis, spondylolisthesis, and compression of the spinal cord or nerve roots often require surgical treatment to completely relieve the compression, restore the physiological curvature of the spine, and protect the spine. Stablize. In addition, some patients with spinal deformity, trauma, tumor, revision surgery and infection sometimes need interve...

AI Technical Summary

Problems solved by technology

The intervertebral fusion device has a good curative effect on the above spinal diseases. It is easy to operate, easy to use, high fusion rate, and has no complications of bone graft fusion. It has been widely used and clinically, but the existing intervertebral fusion device still exists. Defects such as low stability

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