The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 1990
Filed:
Nov. 12, 1987
George E Waters, Jr, Westsfield, IN (US);
Robert L Thommen, Indianapolis, IN (US);
Other;
Abstract
An intraocular pressure sensor utilizes a small sensitive piezo-resistance strain gauge cell mounted in a curved semi-rigid holder which serves to position the planar pressure sensitive surface of the strain gauge cell in contact with the eyeball surface. Deformation of the strain gauge cell due to contact with the eyeball produces an output signal corresponding to the intraocular pressure. The sensor is small and can be worn in the eye like a contact lens for extended periods of time permitting the intraocular pressures to be accurately monitored under normal living conditions, including during sleep. Fine wires are led from the sensor out over the eyelid for connection to an external recording/monitoring apparatus.