Rotary expansion type interbody fusion cage

Abstract

The invention belongs to the technical field of medical instruments and particularly relates to a rotary expansion type interbody fusion cage. The rotary expansion type interbody fusion cage comprisesan upper fusion cage body, a lower fusion cage body, a transmission body and a transmission screw, a first circular groove is formed in one end face, close to the lower fusion cage body, of the fusion cage, a second circular groove is formed in one end face, close to the upper fusion cage body, of the fusion cage, the upper fusion cage body and the lower fusion cage body are hinged in the shape of 'X' through 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 with the lower end of the transmission body, the upper fusion cage body is rotatably connected with the upper end of the transmission body, a threaded hole matched with the transmission screw is formed in the upper fusion cage body, and the free end of the transmission screw is clamped onto the transmission body. The rotary expansion type interbody fusion cage has the advantage that problems of great trauma, serious pain and long recovery time after implantation of the single fusion cage, or complicated operation, long operation time and insufficient stability after implantation of multiple fusion cages in the prior art are solved.

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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