Patent ID: 6306114
Filing Date: 2001-10-23
Classification: A61F

Abstract:
A canalicular plug for insertion into or through a punctal opening of a nasal lacrimal duct to prevent the flow of tear fluid through the nasal lacrimal duct, said canalicular plug comprising:a) a proximal head portion;b) a distal body portion sized to be received within the punctal opening;c) a shaft portion provided between said head portion and said body portion,said head portion, said body portion, and said shaft portion defining an axial throughbore which extends completely through said head portion; andd) a valve which substantially prevents passage of the tear fluid through said throughbore in a first direction defined by said head portion to said body portion and which permits the passage of pressurized fluid through said axial throughbore in a second direction substantially opposite said first direction,said head portion, said body portion, said shaft portion, and said valve being made of a flexible material.