Ophthalmologic operation needle

By incorporating a needle hole and a smooth coating at the tip of the ophthalmic surgical needle, the trauma problem caused by multiple suture passes through tissue in existing technologies is solved, achieving the effects of reducing trauma, improving efficiency, and lowering the risk of infection. It is suitable for a variety of ophthalmic surgeries.

CN224251629UActive Publication Date: 2026-05-19PEKING UNIVERSITY THIRD HOSPITAL (THE THIRD CLINICAL MEDICAL SCHOOL OF PEKING UNIVERSITY)
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Patent Information

Application Number
CN202520625389.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-03
Publication Date
2026-05-19
Estimated Expiration
2035-04-03

AI Technical Summary

Technical Problem

The use of needle-based surgical sutures in current ophthalmic microsurgery increases tissue trauma, especially in intraocular lens repositioning surgery where sutures pass through the tissue multiple times, leading to increased trauma.

Method used

Design an ophthalmic surgical needle with a needle tip featuring an eyelet diameter of 0.01–0.08 mm, suitable for passing through 10-0 or 8-0 polypropylene sutures. After the suture is secured at the needle tip, a longer needle is withdrawn, reducing the number of times the needle passes through the eyeball. The needle tip can be a spatula type, coated with a smoothing coating to reduce friction, and has connection holes on the sidewall for ventilation or medication administration.

Benefits of technology

It reduces tissue trauma, improves surgical efficiency, lowers the risk of infection, and adapts to the operational needs of different surgical sites, especially offering greater flexibility in suturing confined spaces or thin tissues.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an ophthalmologic operation needle which comprises a needle body, and a needle tip is arranged at one end of the needle body. A needle hole is formed in the needle tip and penetrates through the needle body in the length direction of the needle body, and the diameter of the needle hole ranges from 0.01 mm to 0.08 mm. According to the ophthalmologic operation needle, the central needle hole is formed in the needle point, and a 10-0 or 8-0 polypropylene suture can penetrate through the needle hole in the diameter range, so that after the needle point penetrates into an eye, the suture can penetrate through an IOL bag to be knotted and fixed with an IOL loop, and the long needle can exit in situ without penetrating through the eyeball wall on the other side. For a patient with IOL deviation, IOL bag complex deviation or only need to perform IOL unilateral loop ciliary sulcus fixation, a needle hole is formed in the tip end of the long needle, and after threading, the IOL is introduced into the eye through a needle tip. According to the three-piece type IOL, a suture line can be knotted and fixed to an IOL loop, and a long needle retreats along the original path. For a one-piece IOL, a long needle with an 8-0 suture can penetrate through the loop of the IOL, the polypropylene suture is left on the loop of the IOL, and the broken end is subjected to electrocoagulation knotting, so that operation steps are reduced, and wounds are reduced.
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