An ablation catheter apparatus with a monopole antenna that is arranged to provide a relatively uniform electric field and a method for using such an ablation catheter apparatus are disclosed. According to one aspect of the present invention, an ablation catheter includes an elongated flexible tubular...http://www.google.de/patents/US7346399?utm_source=gb-gplus-sharePatent US7346399 - Monopole tip for ablation catheter
