An ablation catheter 10 includes an elongate carrier 12. A first loop 14.1 is arranged at, or adjacent, a distal end of the carrier 12. At least one sensing electrode 40 is carried on the first loop 14.1 for sensing irregular electrical activity in a patient's body. At least one further loop 14.2 is...http://www.google.co.uk/patents/US20070270794?utm_source=gb-gplus-sharePatent US20070270794 - Ablation catheter