SERF VT Ablation Early Feasibility Study (EFS)

The purpose of this study is to gather information on the technical feasiability and safety of a needle ablation catheter called the Durablate™ Saline Enhanced Radiofrequency (SERF) catheter. This catheter is being studied to treat ventricular tachycardia (VT) in patients who have already been treated with medicine, have an Implantable Cardioverter Defibrillator (ICD) and had an ablation procedure to treat their VT but continue to experience VT despite these treatments. A VT ablation procedure is done by finding the abnormal heart tissue that's causing the VT and applying energy with the tip of an ablation catheter to the area to create a scar or destroy the tissue that causes the VT. The SERF catheter being used in this study uses a needle to deliver heated saline (salt water) and radiofrequency energy deeper into the heart tissue that is causing the VT than a standard ablation catheter.