| abstract |
This invention involves method and apparatus for guiding ablative therapy of abnormal biological electrical excitation. In particular, it is designed for treatment of cardiac arrhythmias. In the method of this invention electrical signals are acquired from passive electrodes (1), and an inverse dipole method is used to identify the site of origin of an arrhythmia (8). The location of the tip of the ablation catheter (9) is similarly localized from signals acquired from the passive electrodes while electrical energy is delivered to the tip of the catheter. The catheter tip is then guided to the side of origin of the arrhythmia, and ablative radio frequency energy is delivered to its tip to ablate the site. |