Medical instruments that exhibit surface lubricity when wetted
AssigneeTerumo Kabushiki Kaisha
InventorsMakoto Onishi, Kenichi Shimura, Naoki Ishii
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Abstract
This invention provides a medical instrument having on a surface a layer (surface lubricating layer) that forms a hydrogel when wetted and that is composed of an insolubilized water-soluble or water-swellable polymer having a reactive functional group in the molecule. The surface having outstanding surface lubricity and, optionally, the ability to prevent the formation of thrombi.
Claims7
A medical instrument exhibiting surface lubricity when wetted, comprising a surface coated with a surface lubricating layer, said surface lubricating layer comprising a block or graft copolymer having a hydrophilic domain and a reactive domain, said reactive domain having a reactive functional group selected from the group consisting of epoxy and isocyanate, and wherein said functional group is cross-linked with another functional group.
A medical instrument exhibiting surface lubricity when wetted, comprising a matrix material surfaced with a surface lubricating layer comprising a block or graft copolymer having a hydrophilic domain and a reactive domain, said reactive domain having a reactive functional group selected from the group consisting of an epoxy group and an isocyanate group, wherein said surface lubricating layer is formed by dipping the matrix material in a solution of said block or graft copolymer;
- and wherein said functional group is cross-linked with another functional group to form an interpenetrating network structure between the matrix material and the copolymer.
Dependencies are inferred from the claim text.