Set of appliances for posterior lumbar interbody minimally invasive fusion

An intervertebral and lumbar technology, which is applied in the field of instruments for minimally invasive posterior lumbar interbody fusion surgery, can solve the problems of increased intraoperative bleeding, difficulty in obtaining, and wasted operation time, and can reduce muscle damage and production technology. The effect of simplicity and reduction of surgical costs

Inactive Publication Date: 2011-08-31
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 s

Method used

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  • Set of appliances for posterior lumbar interbody minimally invasive fusion
  • Set of appliances for posterior lumbar interbody minimally invasive fusion
  • Set of appliances for posterior lumbar interbody minimally invasive fusion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] see figure 1 and figure 2 , a set of instruments for minimally invasive posterior lumbar interbody fusion surgery provided by the present invention is composed of front narrow handle retractor I and rear narrow handle retractor II, the front narrow handle retractor I is composed of front tip 1, front It consists of a head 2, a front body 3, a front anti-slip handle 4 and a front arc tail 5, and the rear narrow handle hook II consists of a rear tip 6, a rear head 7, a rear body 8, The rear anti-slip handle 9 and the rear arc-shaped tail end 10 are formed, the front tip 1 is bent in the same direction as the front arc-shaped tail end 5 , and the rear tip 6 is bent in the opposite direction to the rear arc-shaped tail end 10 . Anti-slip treatment is carried out on the surface of the front anti-slip handle 4 and the rear anti-slip handle 9, that is, fine lattice processing. The front tip 1 and the rear tip 6 are each bent at an angle of 45°.

[0025] The instrument provid...

Embodiment 2

[0029] The method of use of the present invention: after fluoroscopy determines the pathological lumbar segment, take this segment as the center, open about 2 cm lateral to the posterior midline of the lumbar spine, and make a surgical incision about 2.5 cm long on the left and right sides. Cut the skin, superficial fascia, and thoracolumbar fascia, and separate the longitudinal fissures of the multifidus muscle. Place the tip of the anterior narrow handle retractor on the lamina, apply a downward and outward pulling force, and Push away the soft tissue; place the rear retractor with narrow handle on the soft tissue inside the incision, apply a downward and inward pulling force and push the inner soft tissue away. Through the combined use of the set of minimally invasive retractors, minimally invasive lumbar fusion can be achieved within the range of two 2.5cm incisions.

[0030] The specific instructions are as follows:

[0031] 1. The fresh-frozen cadaver specimen is placed...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): A61B17/02A61B17/56
Inventor 范顺武方向前赵兴赵凤东
Owner ZHEJIANG UNIV
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