Minimally-invasive lumbosacral vertebrae axial fusion inner fixing system with lock

Abstract

The invention discloses a minimally-invasive lumbosacral vertebrae axial fusion inner fixing system with a lock. The system is characterized in that a multi-hole connecting block is included, a locating aiming device and a screw implanting device are arranged on the multi-hole connecting block respectively, a locating aiming mechanism is arranged on the locating aiming device, and a fixing device is arranged between the multi-hole connecting block and the screw implanting device. As an improvement, through holes are evenly formed in the multi-hole connecting block, and the locating arming aiming device and the screw implanting device are arranged on the through holes of the multi-hole connecting block respectively. Fastening holes corresponding to the through holes are formed in the multi-hole connecting block. The fastening holes are connected with the fastening bolts in a thread mode. The system is simple in structure, the number of adjustable parts is small during using, operation is easy and convenient, the fact that displacement errors are small can be guaranteed, and implantation accuracy is improved.

Description

Technical field: [0001] The invention relates to a minimally invasive lumbosacral vertebral locking axial fusion internal fixation system. Background technique: [0002] Lumbosacral fusion is a common surgical method for clinical treatment of lumbosacral degeneration and instability. At present, the conventional anterior surgery is easy to damage the internal organs, blood vessels and nerves, and the posterior surgery interferes greatly with the physiological function of the spine, which does not conform to the biomechanical structure of the spine. In the past ten years, with the development of minimally invasive concepts and science and technology, new anterior lumbar minimally invasive surgery represented by laparoscopic anterior keyholes, minimally invasive small incisions, percutaneous internal fixation and fusion, etc. have made great progress. . [0003] At present, external radiotherapy is used for lumbosacral intervertebral fusion and internal fixation at home and abroad....

AI Technical Summary

Problems solved by technology

[0004] However, in clinical studies, it has been found that although the internal fixation of lumbosacral axial fusion has better flexion and lateral stability, it has poor rotational stability.

In order to improve the stability against rotation, it is often necessary to supplement the internal fixation of the lumbosacral spine with the screw-rod system. In this way, the axial fusion internal fixation and the posterior screw-rod internal fixation are expensive and difficult for many Chinese to afford. The operation is cumbersome, the operation time is long, the trauma increases, and the bleeding also increases

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