System and method for locating a surface of ocular tissue for glaucoma surgery based on dual aiming beams

US11564567B2 · kind B2 · utility

Assignee

• ViaLase, Inc. · US

Inventors

• Tibor Juhasz · San Clemente, US
• Ferenc Raksi · Ann Arbor, US
• Manu Sharma · San Diego, US
• Hadi Srass · Yorba Linda, US
• Carlos G. Suarez · Tustin, US
• Guy Holland · San Clemente, US
• Wesley W. Lummis · Oceanside, US
• Eric R. Mikula · Aliso Viejo, US
• Virginia Qi Lin · Santa Ana, US

Key dates

• Filing date: Feb 4, 2020
• Grant date: Jan 31, 2023
• Expiry date: May 16, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2009/00891
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A target surface in an eye is located using a dual aiming beam apparatus that transmits a first aiming beam of light and a second aiming beam of light. An optics subsystem receives a laser beam from a laser source, the first aiming beam of light, and the second aiming beam of light, and directs the beams of light to be incident with the target surface and aligns the beams of light such that they intersect at a point corresponding to a focus of the laser beam. An imaging apparatus captures an image of the target surface including a first spot corresponding to the first aiming beam of light and a second spot corresponding to a second aiming beam of light. A separation between the spots indicates that the focus is away from the target surface, while overlapping spots indicate the focus is at or on the target surface.