Patent ID: 9731051
Date: 2017-08-15
CPC Classifications: A61B,A61L,A61N,C08L

Claim:
1. An implantable medical device for electrical stimulation or sensing, the medical device comprising: a body supporting at least one flexible elongate conductor element, wherein the body includes an insulating structure that protects the conductor element, wherein the insulating structure includes at least a first polymer layer, a second polymer layer and a third polymer layer; wherein the second polymer layer is disposed between the first polymer layer and the third polymer layer and covers the first polymer layer and interfaces to both the first polymer layer and the third polymer layer; wherein the third polymer layer covers and interfaces to the second polymer layer; wherein the first polymer layer is formed from a thermoplastic polyurethane material; wherein the third polymer layer is formed from an isobutylene block copolymer; and wherein the second polymer layer is formed from a polymer blend of the thermoplastic polyurethane material of the first polymer layer and the isobutylene block copolymer of the third polymer layer.