Automatic distraction system for jugular anterior pyramid

Abstract

The invention relates to a jugular anterior pyramid automatic distraction system which is convenient to operate and good in stability performance and enables view to be good after operating zone location. The automatic distraction system comprises a sliding rod, two distraction rods, pyramid puncture locating pins and two operation channel devices matched with the distraction rods. Each distraction rod comprises a sliding block and a connecting rod, wherein the end of a cross rod in the connecting rod is connected with the sliding block and a through hole is arranged in a vertical rod in the connecting rod. The pyramid puncture locating pins are arranged in the through holes, and the sliding blocks are sleeved on the sliding rod. Each operation channel device is formed by a limiting column and a baffle. Each limiting column is of a three-dimensional structure, wherein the side of the limiting column is provided with an open groove which penetrates through the upper end and the lower end to form a concave cross section. Contours of the open grooves of the limiting columns are in clasping matching with outer contours of the vertical rods in the connecting rods, the outer edges of two sides of the open grooves of the limiting columns are respectively connected with one baffle, and the operation channel devices form three-dimensional shapes with the cross sections in convex shapes without bottom edges after the limiting columns are connected with the baffles. The jugular anterior pyramid automatic distraction system has the advantages of being convenient to operate and good in stability performance and enabling the view to be good after operating zone location.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to an automatic expansion system for anterior cervical cones. Background technique [0002] During spinal surgery, in order to prevent the muscles, blood vessels, trachea, esophagus, thyroid and other tissues on both sides of the spine at the incision from affecting the surgical operation, it is necessary to peel off and stretch the tissues on both sides of the spine at the incision. When used, the spreader needs to be placed in the incisions on the left and right sides or the upper and lower ends of the surgical site. Depending on the operation of the operation, the tissue is separated to the two sides and the vertebral body is exposed to facilitate the operation. The strength of the blade is not high, the distal end of the blade has a tendency to cohere, and the method of expansion is single. Since at least two distractors are required to play a role, in addition, other instrume...

AI Technical Summary

Problems solved by technology

[0002] During spinal surgery, in order to prevent the muscles, blood vessels, trachea, esophagus, thyroid and other tissues on both sides of the spine at the incision from affecting the surgical operation, it is necessary to peel off and stretch the tissues on both sides of the spine at the incision. When used, the spreader needs to be placed in the incisions on the left and right sides or the upper and lower ends of the surgical site respectively. Depending on the operation of the operation, the tissue is separated to the two sides and the vertebral body is exposed to facilitate the operation. The strength of the blade is not high, the distal end of the blade has a tendency to cohere, and the method of expansion is single. Since at least two distractors are required to play a role, in addition, other instruments are needed to assist the distraction cone for intervertebral disc removal. The surgical incision needs to be long, which not only increases the pain of the patient, but also is not easy to heal after the operation. The effect of opening the operation area is not good, which affects the field of vision. The operation is complicated and increases the risk of operation. It does not conform to the concept of minimally invasive spinal surgery. The diameter of similar working channels is generally large, and the paravertebral muscles, especially the multifidus muscles, etc. are damaged after use, and the price is expensive, which increases the cost of surgery for patients

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