Method for manufacturing lenses

B - Operations – Transporting – 29 – D

Patent

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B29D 11/00 (2006.01) B29D 11/02 (2006.01)

Patent

CA 2511638

A method of manufacturing an ophthalmic lens, involves contacting the lens with an aqueous solution comprising a surfactant to remove debris from the lens, prior to inspecting and packaging the lens. The aqueous solution may further comprise a buffering agent and/or sodium chloride. Preferred surfactants include polyoxyethylene-polyoxypropylene block copolymer, nonionic surfactants, such as a poloxamer or a poloxamine. The methods may also be employed for additional biomedical devices, such as ophthalmic implants.

La présente invention se rapporte à un procédé de production d'une lentille oculaire, qui consiste à mettre la lentille en contact avec une solution aqueuse contenant un tensio-actif afin d'éliminer les impuretés de la lentille, avant que cette dernière ne soit examinée et conditionnée. La solution aqueuse peut également contenir un agent tampon et/ou du chlorure de sodium. Les tensioactifs préférés sont des tensioactifs non ioniques à base d'un copolymère à blocs, tels que le poloxamère ou la poloxamine. Les procédés selon l'invention peuvent également être utilisés pour d'autres dispositifs biomédicaux, comme des implants oculaires.

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