A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 9/00 (2006.01) A61F 9/007 (2006.01) A61K 31/352 (2006.01) A61L 27/00 (2006.01) A61P 27/14 (2006.01) G02C 7/04 (2006.01)
Patent
CA 2753106
Disclosed is a sustainedly drug-releasing hydrogel contact lens which can sustainedly release an anionic medicament such as an allergy-treating agent in a mildly irritating and effective manner while achieving vision correction. Specifically disclosed is a hydrogel comprising ionic monomers composed of at least a cationic monomer and an anionic monomer, wherein the component ratio of the ionic monomers is 5 to 20 mol% inclusive relative to the total amount of monomers that constitute the gel, and the content of the anionic monomer is 15 to 25 mol% inclusive relative to the content of the cationic monomer.
La présente invention concerne une lentille de contact en hydrogel à libération prolongée de médicament apte à libérer de manière prolongée un médicament anionique, tel un agent traitant les allergies, et ce, de manière modérément irritante et efficace tout en corrigeant la vue. L'invention porte plus particulièrement sur un hydrogel comprenant des monomères ioniques composé d'au moins un monomère cationique et un monomère anionique. Le rapport des composants en ce qui concerne les monomères ioniques est compris entre 5 et 20 % en moles y compris par rapport à la quantité totale de monomères composant le gel, et la teneur en monomères anioniques est comprise entre 15 et 25 % en moles y compris par rapport à la teneur en monomères cationiques.
Ichinokawa Aya
Matsunaga Toru
Sakai Osamu
Sato Takao
Seed Co. Ltd.
Senju Pharmaceutical Co. Ltd.
Smart & Biggar
LandOfFree
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