System and method for femto-fragmentation of a crystalline lens

US9592157B2 · kind B2 · utility

Assignees

• BAUSCH & LOMB INCORPORATED · US
• TECHNOLAS PERFECT VISION GMBH · DE

Inventors

• Toh Seng Goh · Wildwood, US
• Brian D. McCary · Clayton, US
• David H. Mordaunt · Los Gatos, US
• Frieder Loesel · Mannheim, DE
• Jochen Kandulla · Munich, DE
• Gerhard Youssefi · Landshut, DE
• Werner Banghard · Weilheim, DE

Key dates

• Filing date: Mar 12, 2013
• Grant date: Mar 14, 2017
• Expiry date: Dec 16, 2033

Classification

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

Abstract

A system and method for performing a femto-fragmentation procedure on tissue in the crystalline lens of an eye requires that a laser beam be directed and focused to a focal point in the crystalline lens of the eye. The focal point is then guided, relative to an axis defined by the eye, to create a segment cluster by causing Laser Induced Optical Breakdown (LIOB) of tissue in the crystalline lens. The resultant segment cluster includes a plurality of contiguous, elongated segments in the crystalline lens that are individually tapered from an anterior end-area to a posterior end-area. Specifically, this is done to facilitate the removal of individual segments from the segment cluster in the crystalline lens.