Surface treatment for silicone hydrogel contact lenses...

Stock material or miscellaneous articles – Composite – Including interfacial reaction product of adjacent layers

Reexamination Certificate

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C428S411100, C428S447000, C623S006620

Reexamination Certificate

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06902812

ABSTRACT:
The present invention provides an optically clear, hydrophilic coating upon the surface of a silicone medical device by sequentially subjecting the surface of the lens to plasma polymerization in a hydrocarbon-containing atmosphere and then covalently attaching a preformed hydrophilic polymer to the surface of the carbon coating. The invention is especially useful for forming a biocompatible coating on a silicone contact lens.

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Patent Abstract of Japan, Koujiyundo Kaagaku Kenkyusho:KK, Futaki Takehiko, Formation of Plasma Polymerized Film, Publication No.: 01230777, Publication Date: Sep. 14, 1989, Application Date: Mar. 9, 1988, Application No.: 63055597.

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