Ophthalmic surgical instruments

Abstract

The present invention discloses an ophthalmic surgical instrument. The instrument comprises a needle tube, one end of the needle tube is provided with a puncture needle, the interior of the needle tube is provided with a first telescopic groove, the connection between the needle tube and the puncture needle is provided with a rotating member, the interior of the needle tube is provided with a suction tube, and the inner surface of the puncture needle is fixedly connected with an adjustment wire; through the set adjustment wire, the opening and closing of the puncture needle can be realized, and when the four-valve puncture needle is completely closed, a needle tip can be formed by the combination to facilitate puncture, and the suction tube can easily pass through the puncture needle to avoid repeated needle punctures; through a set adjustment wire fixed ring, the adjustment wire can be fixed to prevent the adjustment wire from blocking the extension of the suction tube; through the puncture needle on the surface of the suction tube and the slope on the surface of the adjustment wire fixing ring, the adjustment wire can be fixed without blocking the penetration of the suction tube;and through the hollow structure set inside the suction tube, glass volume liquid can be conveniently extracted.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to ophthalmic surgical instruments. Background technique [0002] As the age gradually increases, the adhesion between the lens and the vitreous body gradually becomes worse, so it is easy to separate them during senile cataract surgery. There are no blood vessels in the vitreous body, and the nutrients it needs come from the aqueous humor and choroid, so the metabolism is slow , can not be regenerated, if there is a defect, its space will be filled by aqueous humor, when the vitreous body is clouded due to various reasons, when looking at things, you will feel like there are mosquitoes flying in front of you, in addition, with the increase of age, or due to height For reasons such as myopia, the semi-solid gel-like vitreous will gradually become liquid, which is called vitreous liquefaction. [0003] Vitrectomy is a high-tech that has been developed strictly and rapidl...

AI Technical Summary

Problems solved by technology

[0004] When the patient is not limited to vitrectomy, but still needs to remove the lesion inside the eyeball on the basis of vitrectomy, repeated perforation is required during the operation, and repeated perforation is likely to cause adverse effects on the eyeball, and the existing The needle of the puncture needle is not weakened enough, which is easy to cause inconvenience to the puncture

Images