A minimally invasive internal fixation system for lumbosacral vertebrae with locking axial fusion

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 lock axial fusion internal fixation system. Background technique: [0002] Lumbosacral fusion is a common surgical method for the clinical treatment of lumbosacral degenerative and unstable diseases. At present, conventional clinical anterior surgery is easy to damage viscera, blood vessels and nerves, while posterior surgery greatly interferes with the physiological functions of the spine and does not conform to the biomechanical structure of the spine. Over the past ten years, with the development of minimally invasive concepts and science and technology, the new minimally invasive anterior lumbar surgery represented by laparoscopic anterior keyhole, minimally invasive small incision, percutaneous internal fixation and fusion has made great progress. . [0003] At present, the internal fixation of lumbosacral intervertebral fusion is performed externally, which involves large trau...

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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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