Apparatus is disclosed for temporary treatment of atrial fibrillation of a patient's heart for limited periods of time. An external control unit generates electrical shock impulses; and is electrically connected to spaced-apart defibrillation electrodes of a flexible catheter adapted for temporary implantation...http://www.google.com.au/patents/US5928269?utm_source=gb-gplus-sharePatent US5928269 - Apparatus and method for temporary atrial defibrillation with external defibrillator and implanted transvenous catheter and electrodes