New balloon materials
AssigneeSciMed Life Systems, Inc.
InventorsJan Weber, John Chen
Life of this patent
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Abstract
A medical device, such as a catheter, catheter balloon, stent, blood filter, endoscope or portion thereof, comprises a segmented polymer, having a plurality of hard segments and a plurality of soft segments. The polymer hard segments have a substantially uniform molecular weight distribution. The molecular weight distribution ratio, Mw/Mn, may be 1.5 or less.
Claims27
A medical device comprising a polymer, the polymer having a plurality of hard segments and a plurality of soft segments, wherein the polymer hard segments have a substantially uniform molecular weight distribution.
A polymer having a plurality of hard segments and a plurality of soft segments, wherein the hard segments have a molecular weight distribution ratio, Mw/Mn, of 1.5 or less, the hard segments comprise aromatic residues linked by amide, ester, ether, imide and/or urethane linkages, the hard segment content is 45-85% by weight of the polymer, the hard segments have a molecular weight distribution ratio, Mw/Mn, of 1.5 or less and the soft segments are polyether, polyester ether, polyester, polyolefin or diene polymer blocks, or mixtures thereof, having number average molecular weights of from of 500 to 1500.
An implantable medical device having a polymer coating of block copolymer thereon, the coating having a surface forming islands of phase separated first blocks surrounded by a matrix of second blocks, the first blocks characterized by having cell adhesion compatibility for a targeted cell type and the second blocks being hydrophilic and characterized by a lower cell adhesion compatibility for said targeted cell type than said first blocks.
Dependencies are inferred from the claim text.