Patent ID: 6544223
Filing Date: 2003-04-08
Classification: A61L,A61M

Abstract:
A drug delivery device, comprising:an elongated shaft having a distal section and a proximal section; an inflation assembly coupled to said distal section of said elongated shaft, said inflation assembly including an inflatable balloon having a plurality of holes defined in a wall of said balloon; and a microporous precipitate coating, wherein a majority of the inner surface of said microporous precipitate coating is in intimate contact with a majority of the outer surface of said balloon wall so as not to include a gap between said microporous precipitate coating and said balloon wall, and wherein said microporous precipitate coating has micropores of a size that permit controlled delivery of a drug from said elongated shaft to said holes in said balloon and through said micropores of said microporous precipitate coating disposed on the outer surface of said balloon wall.