An implantable cardiac electrode for use in defibrillation. The electrode comprises a plurality of layers of porous conductive screens and backed by an insulation layer. When implanted on or about the heart surface, body fluids can flow through the screens thus increasing the effective surface area of...http://www.google.de/patents/US5020544?utm_source=gb-gplus-sharePatent US5020544 - Low energy defibrillation electrode
