Set of appliances for posterior lumbar interbody minimally invasive fusion

Abstract

The invention provides a set of appliances for posterior lumbar interbody minimally invasive fusion, comprising a front narrow-handle retractor and a rear narrow-handle retractor, wherein the front narrow-handle retractor comprises a front pointed end, a front head part, a front body part and a front anti-skid handle; the rear narrow-handle retractor comprises a rear pointed end, a rear head part, a rear body part and a rear anti-skid handle; the front pointed part and a front arc tail end are bent in the same direction; and the rear pointed part and a rear arc tail end are bent in reverse directions. The set of appliances of the invention has the advantages of reasonable design, simple and convenient making process, low cost and convenience for use. By using the invention, the surgical incision can be reduced, the damage of the surgery to paravertebral muscles is reduced, the surgery cost is reduced and the surgery time is also shortened. The invention provides a set of simple and easily learnt teaching appliances for posterior lumbar minimally invasive fusion for training the clinical surgery physicians.

Description

technical field [0001] The invention belongs to surgical instruments, and relates to surgical instruments for spine surgery, and mainly relates to a set of instruments for minimally invasive posterior lumbar intervertebral fusion surgery. Background technique [0002] 1. Posterior lumbar interbody fusion is an irreplaceable surgical method [0003] Since Cloward et al first reported the application of posterior lumbar interbody fusion (PLIF) in the treatment of lumbar disc herniation in 1953, lumbar interbody fusion has been widely used and has become the current treatment for various degenerative diseases. It is a very effective method for lower lumbar diseases and failed revision after lumbar surgery. It has shown incomparable advantages in restoring the height of the intervertebral space, maintaining the stability of the spine, and increasing the area of ​​bone graft fusion. Lider Z et al. followed up 55 patients with PLIF for more than 2 years and concluded that PLIF s...

AI Technical Summary

Problems solved by technology

However, there are still some problems in minimally invasive fusion technology, which hinder the development and application of this technology.

First of all, almost all minimally invasive devices currently used in clinical practice are imported products, such as intervertebral disc mirror equipment, METRx X-Tube expansion channel tube system, internal fixation system (SEXTANT system) specially developed for minimally invasive, etc. The cost is very expensive; secondly, these devices rely on the endoscope system to observe the surgical field of view, and it is difficult to grasp the correct spatial stereoscopic sensation

For spinal surgery in which internal fixation materials are implanted, it is necessary to have a better three-dimensional understanding of the spinal bony structure to prevent internal fixation materials from damaging nerves or implanting in poor positions, and it is difficult to obtain such information solely by endoscopic systems; Or, the learning curve of these technologies is very long, and it is difficult for medical institutions with few surgical cases to master these technologies proficiently.

In addition, unlike laparoscopy and thoracoscopic surgery, which have a large operating space, the operating space of minimally invasive spinal surgery is narrow, and there are many instruments used in the operation. These instruments can easily blur the bloodstains of the endoscope during use, making it necessary to repeatedly insert Pull out the endoscope to keep the field of vision clear; at the same time, when the suction device is used, it is often necessary to stop other operations, which greatly wastes the operation time and increases the bleeding during the operation

Moreover, the direction of the channel tube system is relatively fixed, which limits the adjustment of the direction when the pedicle screw is implanted.

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