Glaucoma drainage the lacrimal system and method
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United States of America Patent
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Dec 12, 1989
Issued Date -
N/A
app pub date -
Aug 4, 1988
filing date -
Aug 6, 1987
priority date (Note) -
Expired
status (Latency Note)
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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.
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