US 10,893,904 B2 · Temperature controlled short duration ablation

Abstract

A method, including selecting a first maximum radiofrequency (RF) power to be delivered by an electrode within a range of 70 W-100 W, and selecting a second maximum RF power to be delivered by the electrode within a range of 20 W-60 W. The method also includes selecting an allowable force on the electrode within a range of 5g-50g, selecting a maximum allowable temperature, of tissue to be ablated, within a range of 55° C.-65° C., and selecting an irrigation rate for providing irrigation fluid to the electrode within a range of 8-45 ml/min. The method further includes performing an ablation of tissue using the selected values by initially using the first power, switching to the second power after a predefined time between 3 s and 6 s, and terminating the ablation after a total time for the ablation between 10 s and 20 s.

Claims16

Dependent claims

A method, comprising:

selecting a first maximum radiofrequency (RF) power of 90 W to be delivered to biological tissue by an electrode;
selecting a second maximum RF power of 50 W to be delivered to the biological tissue by the electrode;
defining a preset impedance value I;
performing an ablation procedure on the biological tissue using radiofrequency (RF) power at the first maximum RF power;
measuring an impedance IT-1 to the first maximum RF power during the ablation procedure at time (T-1);
measuring an impedance IT to the first maximum RF power during the ablation procedure at time (T);
and
when a difference between IT and IT-1 exceeds the preset impedance value I, halting supply of the first maximum RF power to the biological tissue.

5 more elements

Dependencies are inferred from the claim text.

Temperature controlled short duration ablation

Life of this patent

Temperature controlled short duration ablation

Life of this patent

Abstract

Claims16