Patent ID: 7824399
Filing Date: 2010-11-02
Classification: A61B,A61N

Abstract:
1. An ablation system, comprising: a generator for generating ablation energy; an ablation device comprising an ablation element operably coupled to the generator and locatable adjacent a tissue site to be ablated, for applying ablation energy to the tissue site; an electrogram measurement element mounted to the ablation device so that the electrogram measurement element is adjacent the tissue site when the ablation element is adjacent the tissue site; electrogram amplitude measurement circuitry operably coupled to the electrogram measurement element to measure electrogram amplitude at the tissue site, using the electrogram measurement element; and control circuitry operably coupled to the generator to initiate and terminate the application of ablation energy to the ablation element, wherein the control circuitry is operably coupled to the electrogram amplitude measurement circuit and terminates application of ablation energy to the ablation element responsive to occurrence of a plateau in the electrogram amplitude measured by the electrogram amplitude measurement circuitry following initiation of application of ablation energy to the ablating element.