An implantable lead includes a distal portion carrying a tissue stimulating electrode, at least a portion of its outer surface being adapted to stimulate cardiac tissue, wherein the electrode is covered by a pliable, electrically conductive sheath. The sheath is made of an electrically conductive material...http://www.google.fr/patents/US7756589?utm_source=gb-gplus-shareBrevet US7756589 - Conductive polymer sheath on defibrillator shocking coils
Conductive polymer sheath on defibrillator shocking coils