An expandable intervertebral fusion device used in minimally invasive spinal surgery

Abstract

The embodiment of the present invention discloses an expandable intervertebral fusion device used in spinal minimally invasive surgery, specifically relates to the technical field of intervertebral fusion devices, including an upper panel and a lower panel, and the opposite surfaces of the upper panel and the lower panel are opened There are grooves and nuts are fixed inside the grooves; the outer surfaces of the upper panel and the lower panel are provided with through grooves, and the inner walls of the grooves on both sides of the upper and lower panels along the radial direction are provided with slides. There are three circular grooves evenly distributed on the two chutes, and the interiors of the circular grooves at both ends of the two chutes along the horizontal direction are fixed with aprons, and the interiors of the aprons are embedded There are discs. The present invention has high interface stability, does not need to add more screws for fixation, simplifies the operation steps of vertebral body fusion, is beneficial to the fusion of vertebral bodies, and does not cause damage to the original structure of the patient's own vertebral body. Recovery is faster.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of intervertebral fusion devices, in particular to an expanded intervertebral fusion device applied thereto. Background technique [0002] With the intensification of population aging, spinal degenerative diseases with neck and shoulder pain and low back pain as the main symptoms are seriously affecting people's work and life. Vertebral fusion between vertebrae is the current treatment for spinal degenerative diseases. One of the main treatment methods, intervertebral fusion devices are used in vertebral body fusion surgery. According to the raw materials of fusion devices, they can be divided into metals and non-metals. Among them, metals are mainly titanium mesh fusions and non-metal fusions. There are many types of fusion devices, mainly including bio-type fusion devices, composite material fusion devices (such as carbon fiber, polyether ether ketone), absorbable fusion devices, ...

AI Technical Summary

Problems solved by technology

[0005] To this end, the embodiment of the present invention provides an expandable intervertebral fusion device used in minimally invasive spinal surgery. Through the set side frame, buffer groove and spring, the vertical plate is installed inside the circular groove on the upper panel, and the vertical There is a buffer groove inside the board, and the other end of the spring fixed inside the buffer groove is connected to the buffer groove on the vertical plate in the circular groove on the lower panel corresponding to the upper panel, so that the upper panel corresponds to the lower panel. The position is relatively fixed, and when the expansion block adjusts the distance between the two, the spring in the buffer tank can be stretched to ensure the structural unity between the two, which has high interface stability and does not need to add more screws. Fixation makes the operation steps of vertebral body fusion more simplified, which is beneficial to the fusion of the vertebral body, does not cause damage to the original structure of the patient's own vertebral body, and recovers faster after the operation, so as to solve the commonly used cylindrical thread fusion in the prior art The structural contact area between the attached hole and the endplate in the organ structure is small, and the stability of the interface itself is poor, which may easily lead to failure and displacement of the intervertebral fusion, and affect the success rate of the actual minimally invasive spinal surgery.

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