A - Human Necessities – 61 – L
Patent
A - Human Necessities
61
L
A61L 27/00 (2006.01) A61F 2/16 (2006.01) A61L 27/16 (2006.01) G02B 1/04 (2006.01)
Patent
CA 2279213
Molded-in type intraocular lenses consisting of an optical member and support members, wherein the optical member is made of a copolymer prepared by polymerizing 2-[2-(perfluorooctyl)ethoxy]-1-methylethyl (meth)acrylate, an alkyl (meth)acrylate and a cross-linkable monomer at a given ratio and each support member is made of polymethyl methacrylate; a process for producing the same; and soft intraocular lenses consisting of an optical member and support members each made of a soft material, wherein each support member is provided with a flexible part having a specified function. The molded-in type intraocular lenses can be inserted into eyes via a small incised wound while flexing the optical member. After being inserted into eyes, the soft intraocular lenses can prevent the soft optical member from being deformed by the capsular constriction.
L'invention porte sur des cristallins artificiels de type moulés comprenant un élément optique et des éléments de support. L'élément optique est fabriqué dans un copolymère préparé par polymérisation de 2-[2-(perfluorooctyl)éthoxyl]-1-méthyléthyl (méth)acrylate, un alkyle (méth)acrylate et un monomère réticulable selon un rapport donné, et chaque élément de support est fabriqué dans un polyméthyle méthacrylate. L'invention porte également sur un procédé de fabrication de ces cristallins, et sur des cristallins artificiels souples comprenant un élément optique et des éléments de support fabriqués dans un matériau souple, chaque élément de support étant pourvu d'une partie flexible à fonction spécifique. Le cristallins artificiels de type moulés peuvent être insérés dans les yeux en pratiquant une petite coupure et en pliant l'élément optique. Après leur insertion, les cristallins artificiels souples peuvent empêcher l'élément optique souple de se déformer sous l'effet de la constriction capsulaire.
Hamano Migio
Shibuya Akihiko
Yamaya Takuji
Goudreau Gage Dubuc
Hoya Healthcare Corporation
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