Estimation and mapping of ablation volume
AssigneeBiosense Webster (Israel) Ltd.
InventorsAssaf Govari, Andres Claudio Altmann, Yaron Ephrath
Life of this patent
Estimating the term…
Abstract
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.
Claims9
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.
9-23. (canceled)
Dependencies are inferred from the claim text.