a vertebral body fusion

Abstract

The invention provides a technical scheme of threaded fusion cage. The threaded fusion cage comprises a fusion body and a push rod which is arranged in the fusion body and is axially connected with the fusion body in a threaded manner. The threaded fusion cage is characterized in that the vertical projection of the fusion body is a chamfered rectangle, the upper portion of the fusion body is a base portion while the lower portion is a head portion, and an integral structure of an inverted-tooth portion is arranged between the base portion and the head portion; the inverted-tooth portion is provided with a front inverted-tooth wall and a back inverted-tooth wall, two side walls are lacked, and corresponding inverted-tooth wall holes are formed in the two inverted-tooth walls; the head portion is an inverted trapezoidal platform, parallel head openings of the two inverted-tooth walls are formed in the bottom surface of the head portion, and both sides of the head opening in the inner wall of the head portion are inclined planes; a push rod transverse hole penetrating the push rod is formed vertical to the axis of the push rod in the middle lower portion of the push rod, and a push rod axle hole which is connected with the push rod transverse hole is formed along the axis of the push rod in the top end of the push rod.

Description

technical field [0001] The invention relates to a medical operation instrument, in particular to a vertebral fusion device used for thoracolumbar posterior operation. Background technique [0002] Vertebral body fusion devices are widely used in spinal surgery, and are mainly used for intervertebral space reconstruction in discectomy hands. In the prior art, the technical solution closest to this application is authorized by the Patent Office of the State Intellectual Property Office Application number is 201120350285.3, title: utility model patent of expansion type vertebral body fusion device, lacks bone grafting window in the technical scheme of this patent, it is difficult to inject bone particles into bone grafting during operation, so fusion device and vertebral body after operation Fusion is difficult, it is easy to become a foreign body in the body, and there is a certain risk of surgery, which is the deficiency of the existing technology. Contents of the invention...

AI Technical Summary

Problems solved by technology

[0002] Vertebral body fusion devices are widely used in spinal surgery, and are mainly used for intervertebral space reconstruction in discectomy hands. In the prior art, the technical solution closest to this application is authorized by the Patent Office of the State Intellectual Property Office Application number is 201120350285.3, title: utility model patent of expansion type vertebral body fusion device, lacks bone grafting window in the technical scheme of this patent, it is difficult to inject bone particles into bone grafting during operation, so fusion device and vertebral body after operation Fusion is difficult, it is easy to become a foreign body in the body, and there is a certain risk of surgery, which is the deficiency of the existing technology

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