Process for producing contact lenses with durable lubricious coatings thereon

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United States of America Patent

PATENT NO 11385478
APP PUB NO 20180081197A1
SERIAL NO

15704233

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Abstract

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The invention is related to a method for producing soft contact lenses comprises a silicone hydrogel lens body and a composite coating thereon. The composite coating comprises: a plasma base coating which is chemically-attached directly onto the surface of the silicone hydrogel contact lens and functions as a fail-proof measure for ensuring the hydrophobic silicone hydrogel lens material to be shielded from any exposure to ocular environments even after at least 30 days of daily uses including daily waring and daily cleaning/disinfecting; and a relatively-durable lubricious hydrogel top coating for ensuring wearing comfort. A method of the invention comprises forming a plasma-reactive hydrophilic polymer hybrid base coating having reactive functional groups on a silicone hydrogel contact lens and heating the silicone hydrogel contact lens with the hybrid base coating in an aqueous solution of a water-soluble and thermally crosslinkable hydrophilic polymeric material to form a stable lubricious hydrogel coating thereon. This method has a minimized adverse impact on the mechanical properties of silicone hydrogel lens body.

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Patent Owner(s)

  • ALCON INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chiang, Chung-Yuan Johns Creek, US 19 97
Driver-Scott, Angela Atlanta, US 4 21
Pruitt, John Dallas Suwanee, US 63 1036
Qiu, Yongxing Suwanee, US 89 2371
Tallau, Kelly Kayi Johns Creek, US 5 39

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