Crystalline polymeric compositions for ophthalmic devices

Details Crystalline polymeric compositions for ophthalmic devices Crystalline polymeric compositions for ophthalmic devices

A - Human Necessities

61

L

A61L 27/16 (2006.01) A61F 2/16 (2006.01) B29C 61/06 (2006.01) B29D 11/02 (2006.01)

Patent

CA 2407958

Ophthalmic devices suitable for implantation into the eye through small incisions are disclosed. These devices are made from a composition comprising crystalline or semi-crystalline polymeric materials which have a glass transition temperature (Tg) of from about -100 ~C to about 20 ~C, a melting point temperature (Tm) of from about 0 ~C to about 37 ~C, and wherein Tg for the material is lower than Tm for the composition. Disclosed devices include intraocular lenses, corneal inlays, ocular drug delivery devices and implants for reducing intraocular pressure in glaucoma patients; intraocular lenses are preferred.

L'invention porte sur des matériels ophtalmologiques destinés à être implantés dans l'oeil à travers de petites incisions. Ces dispositifs sont fabriqués à partir d'une composition comprenant des matières polymériques cristallines ou semi-cristallines présentant une température de transition vitreuse (T¿g?) comprise entre environ -100 ·C et 20 ·C, une température de point de fusion (T¿m?) comprise entre environ 0 ·C et 37 ·C (T¿g? pour la matière étant inférieure à T¿m? pour la composition). L'invention porte en outre sur des lentilles intraoculaires, des implants cornéens, des dispositifs d'administration de médicaments oculaires et des implants destinés à réduire la pression intraoculaire chez des patients atteints de glaucome. Des dispositifs perférés sont de lentilles intraoculaires.

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