Tachyarrhythmia is treated by applying anti-tachycardia pacing through at least one multi-site electrode set located on, in or around the heart. The electrode set is arranged and located such that an electrical activation pattern having a wave-front between substantially flat and concave is generated...http://www.google.de/patents/US7917216?utm_source=gb-gplus-sharePatent US7917216 - Multi-site pacing for atrial tachyarrhythmias
