Medical devices having polymeric regions based on styrene-isobutylene copolymers
AssigneeBoston Scientific Scimed, Inc.
InventorsJeffrey S. Lindquist, Frederick H. Strickler, Mark Boden, Jan Seppala, Paul J. Miller
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Abstract
According to an aspect of the present invention, implantable or insertable medical devices are provided, which contain one or more polymeric regions. These polymeric regions, in turn, contain one or more polymers, at least one of which is a copolymer that includes a styrene monomer and an isobutylene monomer. Moreover, the styrene monomer content of the copolymer typically ranges from 25 to 50 mol %.
Claims17
An implantable or insertable medical device comprising a polymeric region, wherein said polymeric region is a coating disposed over a medical device substrate, said polymeric region comprising a copolymer that comprises a styrene monomer and an isobutylene monomer, wherein the styrene monomer content of the copolymer ranges from 30 to 40 mol %.
An implantable or insertable medical device comprising a coating disposed over a metallic stent, said coating comprising a block copolymer that comprises a polystyrene block and a polyisobutylene block, wherein the styrene monomer content of the copolymer ranges from 30 to 40 mol %.
Dependencies are inferred from the claim text.