An electrode system is provided for an implantable cardiac defibrillator. The electrode system includes a first endocardial lead having at least one electrode and a second epicardial or extrapericardial lead with an electrode that has a flexible configuration such that it is able to be straightened or...http://www.google.co.uk/patents/US5176135?utm_source=gb-gplus-sharePatent US5176135 - Implantable defibrillation electrode system
