Rat vertebral plate bone scissors and rat vertebral plate cut-out method adopting same

Abstract

The invention relates to rat vertebral plate bone scissors and a rat vertebral plate cut-out method adopting the same. The rat vertebral plate bone scissors comprise a handheld part and a cutting part. The handheld part comprises a left handheld handle, a right handheld handle, a screw for connecting the left handheld handle with the right handheld handle and an elastic sheet for connecting the tail of the left handheld handle with the tail of the right handheld handle. The cutting part comprises a tongue-shaped edge and an annular edge. The tongue-shaped edge and the left handheld handle are of an integrated structure. The annular edge and the right handheld handle are of an integrated structure. The two integrated structures are hinged through a screw. A certain included angle is formed by the front end of the tongue-shaped edge and the front end of the annular edge on the rat vertebral plate bone scissors. Blunt faces are arranged on the outer side of the tongue-shaped edge and the inner side of the annular edge, and the contact faces of the annular edge and the tongue-shaped edge are matched, so that the tongue-shaped edge and the annular edge are matched in the cutting process. According to the rat vertebral plate cut-out method adopting the rat vertebral plate bone scissors, the force, direction and force bearing point of cutting can be effectively controlled, locating is accurate, marrow is not prone to be infected, and the cutting process is fast and easy.

Description

technical field [0001] The invention relates to a rat vertebral lamina scissors, which can be used to bite off the peripheral lamina of the rat spinal cord, so as to make a rat model of spinal cord trauma. [0002] The invention also relates to a rat laminectomy method using the above-mentioned rat laminar bone scissors. Background technique [0003] At present, spinal cord injury is still a difficult problem in international medical treatment. The treatment of spinal cord injury has become a hot research field, and a large number of scientific researchers have devoted themselves to a series of researches on spinal cord injury. The animal spinal cord injury model is an important tool for studying spinal cord injury. At present, the most widely used animal spinal cord injury model is the rat blow injury model, because it can more effectively simulate the compression of the spine caused by falling from heights in human diseases and the spinal cord injury after burst fracture....

AI Technical Summary

Problems solved by technology

[0006] (1) The shearing force is difficult to control

In the occlusal scissors, when the two shearing parts move with each other, there is no external force balance except the human force, so in the case of human operation, it is very easy to use too much force and cause spinal cord injury

[0007] (2) The shearing direction is difficult to control

When the bone scissors are cutting, the first cutting part extends into the intervertebral space, and then the two cutting parts act on the lamina at the same time. Due to the reason of human operation, it is very easy to cause the total force direction to be inward at this time ( that is, the direction of the spinal cord), which immediately damages the fragile spinal cord

[0008] (3) It is difficult to control the shear force point

In this occlusal scissors, since the two cutting parts are elongated, there is no effective stress point or support point that is not easy to cause spinal cord injury during cutting or even before cutting, which is inconvenient to cut and easy to cause spinal cord injury. Spinal cord injury

[0009] (4) prone to spinal cord infection

Because the two cutting parts of the bone scissors are slender and there are no effective precautions, the lamina debris produced during the cutting process may fall into the lamina and infect the spinal cord

[0010] (5) Inaccurate positioning

During the shearing process of the rat lamina, it is difficult to observe the shearing site and control the shearing process, resulting in inaccurate positioning because the general external light is difficult to illuminate the shearing site.

[0011] The above defects make it inevitable that even relatively skilled researchers will damage the spinal cord and even related blood vessels, leading to early damage to the spinal cord and rupture of the dura mater, which has a crucial impact on the stability of experimental data , which directly caused the inhomogeneity of the degree of spinal cord injury in the experimental group, which led to the deviation of the experimental data and failed to obtain satisfactory expected results.

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