PLUG FOR BLOCKAGE OF THE CANALICULUS
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United States of America Patent
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app pub date -
Jan 3, 2013
filing date -
Nov 4, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A cylindrical plug for insertion through the punctum and into the canaliculus to block the flow of tears therethrough comprises an insert of a material which when hydrated expands and changes shape, conforming at least to a portion of the canaliculus crossection and contacting the walls of the canaliculus, thus blocking flow. The plug can be inserted in a dry state and hydrating in situ or hydrated, either partially or fully, prior to insertion.
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