Contact glass for ophthalmic surgery

US8944601B2 · kind B2 · utility

Assignee

• Carl Zeiss Meditec AG · DE

Inventors

• Dirk Muehlhoff · Jena, DE
• Elke Ebert · Jena, DE
• Karsten Festag · Jena, DE
• Uwe Wolf · Magdala, DE
• Dirk Preuss · Jena, DE
• Mark Bischoff · Jena, DE
• Gregor Stobrawa · Jena, DE
• Dietmar Steinmetz · Bucha, DE
• Steffen Dubnack · Jena, DE

Key dates

• Filing date: Aug 25, 2006
• Grant date: Feb 3, 2015
• Expiry date: Mar 9, 2030

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2009/00872
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention relates to a contact glass for ophthalmic surgery. Said glass comprises a lens body that is held in a frame and a front lens surface that is designed to be placed against the eye. According to the invention, the front lens surface is concave and follows a surface curvature (K) and an annular gap is formed at the edge of the front lens surface between the lens body and the frame, said gap being used to apply a negative pressure in order to fix the contact glass to the eye. The frame is designed to follow the contour of an imaginary continuation of the surface curvature (K), or at least does not project beyond the latter.