C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 7/04 (2006.01) A61L 27/34 (2006.01) C08J 7/16 (2006.01) G02B 1/04 (2006.01)
Patent
CA 2373556
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 reaction in a hydrocarbon atmosphere to form a carbon layer, and then graft polymerizing a mixture of monomers comprising hydrophilic monomers onto the carbon layer. The invention is especially useful for forming a biocompatible coating on silicone hydrogel contact lenses.
La présente invention concerne l'application d'un revêtement hydrophile optiquement transparent sur la surface d'un dispositif médical en silicone. Ce traitement consiste à soumettre séquentiellement la surface d'une lentille de contact à une réaction de polymérisation au plasma dans une atmosphère d'hydrocarbures pour former une couche de carbone, puis à polymériser avec greffage un mélange de monomères comportant des monomères hydrophiles sur la couche de carbone. La présente invention est particulièrement utile pour former un revêtement biocompatible sur des lentilles de contact constituées d'hydrogel de silicone.
Ammon Daniel M. Jr.
Grobe George L. III
Mcgee Joseph A.
Valint Paul L. Jr.
Bausch & Lomb Incorporated
Osler Hoskin & Harcourt Llp
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