Volume-variable interbody fusion cage and implanting device thereof

Abstract

The invention relates to a volume-variable interbody fusion cage and an implanting device thereof. The interbody fusion cage comprises a fusion cage body, a middle body and an adjusting bolt, whereinpawls are arranged on the upper surface and the lower surface of the fusion cage body, a first penetrating hole is formed in the fusion cage body, two end faces of the first penetrating hole respectively penetrate through the upper surface and the lower surface of the fusion cage body, an up-down retractable structure is arranged at the front end of the fusion cage body, an integrated structure isarranged at the rear end of the fusion cage body, the middle body is arranged between the up-down retractable structure of the fusion cage body, a second penetrating hole is formed in the middle body, two end faces of the second penetrating holes respectively penetrate through the upper surface and the lower surface of the middle body, a tool clamping groove matched with an implanting tool is arranged on a rear end face of the fusion cage body, a first through hole is formed in the center of the rear end face of the fusion cage body, the front end of the adjusting bole is connected with the rear end of the middle body, and the rear end of the adjusting bolt is movably arranged in the first through hole. The volume-variable interbody fusion cage disclosed by the invention has the advantages of convenience, practicability, ability in more meeting clinical requirements and ability in improving a fusion rate.

Description

technical field [0001] The application belongs to the technical field of medical devices, and in particular relates to a volume-variable intervertebral fusion device and an implantation device thereof. Background technique [0002] Intervertebral discs are located between adjacent vertebral bodies in the spine. Intervertebral discs help stabilize the spine and help distribute forces between the vertebrae. The intervertebral disc consists of an outer fibrous annulus surrounding the inner nucleus pulposus. The annulus fibrosus is a concentric layered structure of collagen fibers and fibrocartilage that resists torsional and bending forces. The nucleus pulposus includes a colloidal material that absorbs stress on the intervertebral disc. Intervertebral discs are prone to dislodgement or damage as they age due to trauma, disease, or other degenerative processes. [0003] At present, intervertebral fusion is an effective method for the treatment of spinal degenerative disease...

AI Technical Summary

Problems solved by technology

However, due to the use of fixed-size intervertebral fusion cages in clinical practice, problems such as fusion cage slippage, spinal instability, and low fusion rate are prone to occur.

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