Patent ID: 7627382
Filing Date: 2009-12-01
Classification: A61L,A61M,A61N

Abstract:
1. An implantable medical device, comprising: a lead body extending from a proximal end to a distal end; a plurality of conductors extending between the proximal end and the distal end of the lead body; and a single insulative layer positioned about each of the plurality of conductors, wherein the insulative layer is formed of an aromatic polyimide of the following structure: wherein R is a tetravalent aromatic radical, preferably containing at least one ring of six carbon atoms, said ring characterized by benzenoid unsaturation, the four carbonyl groups being attached directly to separate carbon atoms in a ring and each pair of carbonyl groups being attached to adjacent carbon atoms in a ring of the R radical; and wherein R″ is a divalent benzenoid radical selected from the group consisting of wherein R″ is selected from the group consisting of an alkylene chain having 1-3 carbon atoms, wherein R′″ and R″″ are selected from the group consisting of alkyl and aryl.