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:
Dec. 12, 1989
Filed:
Aug. 04, 1988
Thomas C White, Sioux Falls, SD (US);
Other;
Abstract
A device and method for allowing fluid to flow from the interior of the eye into the nasolacrimal drainage system associated with the eye to relieve high intraocular pressure in the treatment of glaucoma. The method employs a flexible tube having one end extendable into the anterior chamber of the eye and having its other end in communication with the nasolacrimal drainage system of the eye. A one-way valve is provided within the tube to restrain liquid flow to a direction from the anterior chamber of the eye toward the lacrimal drainage system. The method includes the steps of inserting one end of the tube into the anterior chamber of the eye and inserting the other end of the tube into a portion of the nasolacrimal drainage system; aqueous humor is permitted to escape into the tube at the anterior chamber end, and flows outwardly into the passages of the nasolacrimal system. One or more one-way valve within the tube permit fluid flow only away from the anterior chamber.