Cardima Surgical Ablation System: a novel tool for cardiac ablation in the treatment of atrial fibrillation

Atrial fibrillation is a pervasive and difficult heart rhythm problem for more than 3 million Americans. Patients are plagued by myriad symptoms and are exposed to the risk of stroke. Attempts to restore normal rhythm with drug therapy have been largely unsuccessful and the complications associated with long-term anticoagulation to reduce stroke risk are appreciable. Much interest has therefore developed in nonpharmacological treatments, such as ablation. At present, the optimal ablation device and technique have yet to be found. The Cardima Surgical Ablation System is a newly developed apparatus delivering radiofrequency energy to the outside of the beating heart within a shielded, lighted, irrigated, suction sheath. It advances the field of surgical ablation by addressing many of the shortcomings of older ablating devices, such as target fixation, controlled energy delivery, prevention of collateral tissue damage and device conformability. In this publication we present the specific advantages and disadvantages of the system, discuss its possible role in atrial fibrillation treatment and compare its characteristics with other currently available devices.