ESTIMATION AND MAPPING OF ABLATION VOLUME

摘要

Tissue ablation systems and methods are provided, wherein a cardiac catheter incorporates a pressure detector for sensing a mechanical force against the distal tip when engaging an ablation site. Responsively to the pressure detector, a controller computes an ablation volume according to relationships between the contact pressure against the site, the power output of an ablator, and the energy application time. A monitor displays a map of the heart which includes a visual indication of the computed ablation volume. The monitor may dynamically display the progress of the ablation by varying the visual indication.

主权项

1. A method of ablation, comprising the steps of:
inserting a probe into a body of a living subject; urging the probe into contact with a tissue in the body; determining a mechanical force that is exerted by the probe against the tissue; and applying a specified dosage of energy for an application time and at a power level to the tissue for ablation thereof, wherein at least one of the application time of the dosage and the power level depend on the mechanical force.