A Rotating Distraction Type Intervertebral Fusion Device

Abstract

The present invention relates to the technical field of medical devices, in particular, to a rotary expansion type interbody fusion cage, comprising an upper fusion cage body, a lower fusion cage body, a transmission body, and a transmission screw. A first circular groove is formed on the end surface of the upper fusion cage body close to the lower fusion cage body; a second circular groove is formed on the end surface of the lower fusion cage body close to the upper fusion cage body; the upper fusion cage body and the lower fusion cage body are hinged in an "X" shape by means of the transmission body; the first circular groove and the second circular groove are combined to form a cavity for accommodating the transmission body and the transmission screw; the lower fusion cage body is fixedly connected to the lower end of the transmission body; the upper fusion cage body is rotatably connected to the upper end of the transmission body; a threaded hole matching the transmission screw is formed on the upper fusion cage body; the free end of the transmission screw is fastened to the transmission body. The purpose is to overcome the disadvantages of great trauma, severe pain, and long recovery time after implantation of a single fusion cage, or the problems of complicated operation, long surgery time, and insufficient stability after implantation of multiple fusion cages in the prior art.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a rotary distraction type intervertebral fusion device. 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. Another part of spinal deformity, trauma, tumor, revision surgery and infection patients sometimes need intervertebral fusion to stabilize the lumbar segment. The intervertebral fusion device has 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. The intervertebral fusion c...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a rotating and distracting intervertebral fusion device, which overcomes the shortcomings of large trauma, severe pain, and long recovery time after implantation of a single fusion device in the prior art, or the implantation of multiple fusion devices When the operation is complicated, the operation time is long, and the stability is insufficient.

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