Surface treatment of silicone medical devices

Details Surface treatment of silicone medical devices Surface treatment of silicone medical devices

Category

C - Chemistry, Metallurgy

Subcategory

08

Subsubcategory

J

IPC codes

C08J 7/04 (2006.01) A61L 27/34 (2006.01) G02B 1/04 (2006.01)

Type

Patent

Patent number

CA 2403982

Description

The present invention is directed toward the renewable surface treatment of medical devices such as contact lenses and medical implants. In particular, the present invention is directed to a method of modifying the surface of a medical device to increase its biocompatibility or hydrophilicity by coating the device with a removable hydrophilic polymer by means of reaction between reactive functionalities on the hydrophilic polymer which functionalities are complementary to reactive functionalities on or near the surface of the medical device. The present invention is also directed to a contact lens or other medical device having such a surface coating.

La présente invention concerne le traitement de surface renouvelable de dispositifs médicaux tels que des lentilles de contact et des implants chirurgicaux. En particulier, l'invention concerne un procédé permettant de modifier la surface d'un dispositif médical afin d'en améliorer la biocompatibilité ou le pouvoir hydrophile, par revêtement dudit dispositif avec un polymère hydrophile renouvelable grâce à la réaction entre des groupes fonctionnels réactifs du polymère hydrophile, lesdits groupes fonctionnels étant complémentaires de groupes fonctionnels réactifs se trouvant sur ou à proximité de la surface du dispositif médical. Cette invention concerne également une lentille de contact ou un autre dispositif médical présentant un revêtement de surface de ce type.

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