Estimation of lesion size
AssigneesBiosense Webster (Israel) Ltd., University of Oklahoma Health Sciences Center
InventorsMeir Bar-Tal, Erez Silberschein, Assaf Rubissa, Garth Francis Constantine, Hiroshi Nakagawa
Life of this patent
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Abstract
A method, consisting of ablating tissue for a time period, measuring a contact force applied during the time period, and measuring a power used during the time period. The method further includes ceasing ablating the tissue when a desired size of a lesion produced in the tissue, as estimated using an integral over the time period of a product of the contact force raised to a first non-unity exponent and the power raised to a second non-unity exponent, is reached.
Claims14
Apparatus, comprising:
- a probe configured to ablate tissue for a time period;
- and
- a processor configured to:
- measure an instantaneous contact force applied by the probe during the time period,
- measure an instantaneous power used for ablating the tissue during the time period, and
- cease ablating the tissue when a desired size of a lesion produced in the tissue, as estimated using an integral over the time period of a product of the instantaneous contact force raised to a first non-unity exponent and the instantaneous power raised to a second non-unity exponent, is reached, wherein the first non-unity exponent and the second non-unity exponent are determined through linear regression.
A method, comprising:
- ablating tissue for a time period with a probe;
- measuring an instantaneous contact force applied by the probe during the time period;
- measuring an instantaneous power used for ablating the tissue during the time period;
- and
- ceasing ablating the tissue when a desired size of a lesion produced in the tissue, as estimated using an integral over the time period of a product of the instantaneous contact force raised to a first non-unity exponent and the instantaneous power raised to a second non-unity exponent, is reached, wherein the first non-unity exponent and the second non-unity exponent are determined through linear regression.
Dependencies are inferred from the claim text.