An atrial defibrillation pulse generator and lead system particularly adapted to allow for implant via a single incision. The electrode system includes of a coronary sinus electrode and a subcutaneous electrode, which is preferably located on the housing of the implantable defibrillator. The coronary...http://www.google.de/patents/US5314430?utm_source=gb-gplus-sharePatent US5314430 - Atrial defibrillator employing transvenous and subcutaneous electrodes and method of use
