Patent ID: 7029470

Claim:
An ablation system, comprising: generating means for generating ablation energy; an ablation device comprising a plurality of ablation elements connectable to the generating elements and locatable adjacent a tissue site to be ablated, for applying the generated ablation energy to the tissue site; a plurality of electrogram measuring electrodes mounted to the ablation device so that at least one of the electrogram measuring electrode is adjacent the tissue site when at least one of the ablating elements is adjacent the tissue site; electrogram measurement circuitry connectable to the electrogram measuring electrodes; and control circuitry operably coupled to the generating means to initiate and terminate the application of ablating energy to each of the plurality of ablating elements, wherein the control circuitry is coupled to the electrogram measurement circuitry and selectively terminates application of ablation energy to the ablating elements, said selective termination of ablation energy occurring at at least one of the ablating elements adjacent the tissue site responsive to the electrogram measured by the electrogram measuring circuitry at an electrogram measuring electrode at the tissue site following initiation of application of ablating energy to the ablating element.