Rinsing needle for operation of excimer laser photorefractive in-situ keratomileusis

Abstract

A rinsing needle for operation of excimer laser photorefractive in-situ keratomileusis comprises a needle handle, wherein the tail end of the needle handle is provided with a syringe connecting base; an upper needle and a lower needle are arranged at one side of the head end of the needle handle in a direction which has an included angle of 120 DEG with the needle handle; the needle handle is communicated with the upper needle and the lower needle; the front ends of the upper needle and the lower needle are sealed; the lower side of the upper needle is provided with two water outlets; the upper side of the lower needle is provided with three water outlets with diameter of 0.2 mm; the lower side of the lower needle is provided with five water outlets with diameter of 0.4 mm; and the distance between the upper needle and the lower needle is 0.3 mm. The front end of the rinsing needle is closed; the top end of the needle does to need to be moved between corneal layers, and the cellular damage to corneal stroma is reduced. When the needle slides forward and backward, the rinsing for the upper part and the lower part between the corneal layers and the moistening for the surfaces of the corneal layers can be finished; a plurality of operating procedures can be finished at one time and the operative time is saved; and the cellular damage to corneal stroma is reduced while the moistening protection to corneas is finished, so that the operation is safer and faster.

Description

technical field [0001] The invention relates to a medical device used in the field of excimer laser surgery, in particular to a flushing needle used in excimer laser refractive in situ keratomileusis (LASIK). Background technique [0002] Currently, the flushing needles used in excimer laser surgery are ordinary blunt flushing needles. The flushing liquid flows out directly from the front end of the needle. The flushing time during the operation is long, and it is difficult to completely flush the corneal debris. The movement of the needle between the layers can cause corneal damage. The stromal cells are damaged, and the corneal surface cannot be moistened while the interlayer cornea is flushed, so there are many surgical steps. Contents of the invention [0003] The purpose of the present invention is to provide a kind of excimer laser refraction that reduces the damage to corneal stromal cells, and when the needle slides back and forth, it can complete the upper and low...

AI Technical Summary

Problems solved by technology

[0002] Currently, the flushing needles used in excimer laser surgery are ordinary blunt flushing needles. The flushing liquid flows out directly from the front end of the needle. The flushing time during the operation is long, and it is difficult to completely flush the corneal debris. The movement of the needle between the layers can cause corneal damage. Stromal cells are damaged, and the corneal surface cannot be moistened while the interlayer cornea is flushed, and there are many surgical steps

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