Ophthalmic device containing anionic reagent

• Main Authors: MATSUNAGA, TORU, KODA, SHO, WATANABE, YASUKA, ITO, YUKI, SATO, TAKAO
• Format: Patent
• Language: Chinese; English
• Published: 21.03.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; CONTACT LENSES; DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MEDICAL OR VETERINARY SCIENCE; METALLURGY; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS; SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES; THEIR PREPARATION OR CHEMICAL WORKING-UP

The objective of the present invention is to provide a hydrogel having a favorable shape stability not only after releasing an anionic drug contained but also in the process of releasing such an anionic drug, compared with the conventional techniques; and an anionic drug-containing ophthalmic device obtained by applying the hydrogel. The objective can be achieved by an anionic drug-containing ophthalmic device comprising: (1) an anionic drug; and (2) a copolymer which comprises a cationic monomer and a monomer capable of copolymerizing with the cationic monomer, wherein the cationic monomer comprises, as a structural component, a condensation product of (meth)acrylic acid with an aminoalkyl quaternary ammonium compound having a substituted or unsubstituted aralkyl group, or a salt of the condensation product; and the like.