Ablation Frontiers, a medical device company based in Carlsbad, Calif., focuses on treating supraventricular arrhythmias and atrioventricular node ablation. They have received CE Mark for their catheter system and RF Generator in the European Union. In the United States, they are conducting a clinical trial to gain FDA approval for treating permanent/long-standing persistent/chronic AF. Currently, their products are not approved for marketing or sales in the United States.