Linear knife for optic nerves

Abstract

The invention discloses a linear knife for optic nerves. The linear knife comprises a cylindrical pipe; two catch levers, wherein the two catch levers are fixedly arranged at the front and rear ends of one side of the internal cavity of the cylindrical pipe; a steel wire, wherein the steel wire is in socket joint with the internal cavity of the cylindrical pipe and bypasses single sides of the twocatch levers; a draw ring, wherein one side of the steel wire stretches out of the internal cavity of the cylindrical pipe and is fixedly provided with the draw ring; and a cylindrical cap, wherein the cylindrical cap is in adaptive sleeve joint with one side of the cylindrical pipe. According to the linear knife for the optic nerves, cut-off of the optic nerves of a sufferer is facilitated, thecylindrical pipe easily extends into an eye socket of the sufferer, and thus, secondary injury to eye regions of the sufferer is difficult.

Description

technical field [0001] The invention relates to the technical field of ophthalmology, in particular to an optic nerve linear knife. Background technique [0002] The optic nerve refers to the section of nerve from the optic disc to the anterior horn of the optic chiasm, with a total length of about 42-47 mm, and is divided into four parts: the intraocular segment, 1 mm long; the intraorbital segment, 25-30 mm long; the inner canal segment, long 4-10mm; intracranial section, 10mm long, the optic nerve is a special somatosensory nerve that conducts visual impulses, its fibers originate from the ganglion cells of the retina, and the axons of the ganglion cells merge into the optic disc at the back of the retina and pass through the sclera to form optic nerve; [0003] When the patient's eyeball is removed, the optic nerve behind the eyeball needs to be cut off. At present, surgical scissors are usually used for cutting, but the surgical scissors are inconvenient to enter the p...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a linear optic nerve knife to at least solve the problem that the prior art surgical scissors are inconvenient to enter the patient's eye socket for optic nerve cutting operation, thus easily causing secondary damage to the patient's eyes

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