HYDROGEL AND SILICONE HYDROGEL DEVICES INCLUDING POLYMERIZED SURFACTANTS
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United States of America Patent
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Issued Date -
Feb 26, 2015
app pub date -
Aug 22, 2014
filing date -
Aug 23, 2013
priority date (Note) -
Abandoned
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Abstract
A wettable hydrogel or a silicone hydrogel device includes a polymerized surfactant incorporated into the gel by addition to a gel, on average, of a single ethylenic functionality of the precursor polymerizable surfactant in the polymerization mixture. The attached polymerized surfactant provides improved lubricity to the hydrogel or silicone hydrogel device. Alternately, a wettable hydrogel or a silicone hydrogel device can be formed by soaking a preformed hydrogel or a silicone hydrogel device in a solution of the polymerizable surfactant and a radical initiator and promoting the polymerization of the polymerizable surfactant and available polymerizable groups on or in the device. The wettable hydrogel or a silicone hydrogel device can be a contact lens.
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