Glaucoma drainage in the lacrimal system

Details Glaucoma drainage in the lacrimal system Glaucoma drainage in the lacrimal system

A - Human Necessities

61

M

128/127

A61M 25/01 (2006.01) A61F 9/007 (2006.01)

Patent

CA 1295907

ABSTRACT OF THE INVENTION 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 glau- coma. 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 naso- lacrimal drainage system; aqueous humor is permitted to escape into the tube at the anterior chamber end, and flows outwardly into the passages of the naso- lacrimal system. One or more one-way valves within the tube permit fluid flow only away from the anterior chamber.

574099

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