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:
Jul. 05, 1994
Filed:
Nov. 03, 1992
Francis W Price, Jr, Indianapolis, IN (US);
Other;
Abstract
A technique and device for relieving intraocular pressure with a reduced risk of inflammation that may be caused by retrograde flow back into the eye. A unidirectional drainage device is implanted which allows fluid to flow away from the eye with a minimal pressure gradient (5 mm Hg. or less), and includes means to prevent retrograde flow. When implanted, the drainage passageway is initially restricted by a flow restrictor. After fibrosis has occurred to prevent excessive drainage that might cause hypotony, the flow restrictor is severed to allow the free flow of fluid away from the eye, with inflammatory debris being prevented from reentering the eye. In one embodiment, the flow restrictor includes barbs which hold it to the device after it has been severed, thereby preventing the flow restrictor from floating freely within the eye after it has been cut.