Intraocular pressure recording system

US7137952B2 · kind B2 · utility

Assignee

• Ecole Polytechnique Federale de Lausanne/Service des Relations Industrielles · CH

Inventors

• Matteo Leonardi · Pully, CH
• Stefan Metz · Lausanne, CH
• Daniel Bertrand · Coon Rapids, US
• Peter Leuenberger · Veyrier, CH

Key dates

• Filing date: Jun 29, 2001
• Grant date: Nov 21, 2006
• Expiry date: Sep 23, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G02C7/04
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A new noninvasive approach for intraocular pressure (IOP) measurement allowing continuous monitoring over prolonged periods, regardless of patient's position and activities. The key element of this measurement method is a soft contact lens (1) including at least one strain gage (2) longitudinally arranged around the center of the contact lens and capable of measuring precisely spherical deformations of the eyeball induced by the changes in IOP. This information is transmitted with wires or (preferably) wirelessly in real time to an external recording system (14). The system is placed in the same way as a normal corrective contact lens, no anesthesia is required and patient vision remains almost completely unimpaired.