Corneal lenticular incisions with transition zones in laser-assisted ophthalmic procedures

US12005001B2 · kind B2 · utility

Assignee

• AMO Development, LLC · US

Inventors

• Andrew Voorhees · Sunnyvale, US
• Alireza Malek Tabrizi · Fremont, US
• Hong Fu · Pleasanton, US
• Cynthia Villanueva · San Jose, US
• Nima Khatibzadeh · San Jose, US
• Deepali Mehta-Hurt · Newark, US
• James E. Hill · Waddell, US
• Li-Yu Chen · Hsinchu, TW
• Li Bing · San Jose, US

Key dates

• Filing date: Aug 17, 2021
• Grant date: Jun 11, 2024
• Expiry date: May 10, 2042

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2009/00897
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In laser-assisted corneal lenticule extraction procedures, the lenticule incision profile includes anterior and posterior lenticule incisions, with one or more of the following features: plano transition zone outside the optical zone, to improve mating of anterior and posterior incision surfaces after lenticule extraction; shallow arcuate incisions above the anterior incision and near the lenticule edge, to improve surface mating; separate ring cut intersecting the anterior and posterior incisions in the transition zone, to reduce tissue bridges and minimize tear at the lenticule edges and facilitate easy lenticule extraction; larger posterior incision, which includes a pocket zone outside the lenticule edge, for better surface mating and bubble management during cutting; and a separate ring shaped pocket cut intersecting the pocket zone of the posterior incision, for bubble management. An entry cut can intersect either the pocket zone of the posterior incision or an entry extension zone of the anterior incision.