Annular interbody fusion system under spine total endoscope

Abstract

The invention discloses an annular interbody fusion system under a spine total endoscope. The fusion system comprises a foldable annular interbody fusion cage, and the annular interbody fusion cage comprises a balloon, a multi-cavity tube, a developing ring and a connecting ring. After the annular interbody fusion cage is coiled into a preset shape under action of a guide wire, bone cement is injected into the annular interbody fusion cage, and the bone cement stably supports the intervertebral space after being solidified. According to the annular interbody fusion system, whole-course visual surgical operation in a spine endoscope channel is achieved, the operation is safer, minimally invasive spine endoscopic operation is achieved, the operation is more minimally invasive, nerve traction and harassment are reduced, a risk of postoperative nerve complications is reduced, bleeding in the operation is reduced, a prognosis effect of a patient is improved, and operation time is shortened.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a circular intervertebral fusion system under total endoscope for the spine. Background technique [0002] Degenerative diseases of the spine and its structural damage are an important cause of neck, shoulder, waist, and leg pain, sensory and motor function impairment or even loss. In the 1950s, Cloward first proposed Posterior Lumbar Fusion (PLIF), which has developed into one of the basic procedures of spinal surgery today. In 1986, Badgy and Kuslich designed an intervertebral fusion device (Cage) suitable for the human body, namely the BAK system. Since then, intervertebral bone graft fusion technology has been greatly developed and has become a basic surgical method for the treatment of spinal degenerative diseases and structural injuries. [0003] The principle of the intervertebral fusion is that the diseased intervertebral space is the center. After the intervertebral ...

AI Technical Summary

Problems solved by technology

The defect of this design is: when using, the first filler with self-solidification is filled between the container and the mesh body, and the expanded shape of the mesh body is uncontrollable, resulting in an uncontrollable contact area with the upper and lower vertebral bodies , making the bone graft area too small to affect the fusion effect of the upper and lower vertebral bodies

The defect of this design fusion cage is that: after entering the intervertebral space, the core pin is withdrawn. During the bone grafting process, the head end of the mesh bag will inevitably retract with the expansion of the mesh bag, resulting in the position of the fusion cage after implantation being different from the preset position. The position does not match; after the bone graft is completed, the fusion device needs to be sealed with a mouth tie device, which increases the operation steps of the operation

The defect of this design fusion cage is that although the height of the mechanism can be raised, it is not scalable in the width direction. If it wants to pass through the slender working channel of the endoscope, the width must be narrow, and the length is limited by the size of the vertebral body. Eventually, the area in contact with the upper and lower endplates is relatively small, resulting in excessive local pressure of the vertebral body, which will cause the fusion cage to sink into the interior of the vertebral body for a long time

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