CONDUCTION SYSTEM ABLATION USING FERRITE ROD FOR CARDIAC-ARRHYTHMIA

A disorder of conduction system causes cardiac arrhythmia. At present, electromagnetic waves such as radiofrequency waves are generally used for the ablation. However, the radiofrequency ablation often accompan ies fatal side effects. We developed the new method of catheter ablati on using temperature-sensitive ferrite rod land a nonmagnetic metal ri ng as a heating device. The device generates heat in an impressed magn etic field that does not generate heat in body itself. The maximum tem perature is determined by the Curie temperature of the ferrite rod, Th e clinical application of the method was discussed experimentally. The results suggest that the usefulness of this method for conduction sys tem ablation in the treatment of ventricular arrhythmia.