Method for ablating tissue with multiple ablation probes

摘要

A tissue ablation system comprises an ablation source, such as an RF ablation source, configured for generating a common power signal, and a power multiplexor configured for splitting the power signal into first and second power signals, substantially attenuating the second power signal relative to the first power signal to create nominal and attenuated power signals, and sequentially delivering the nominal power signal to each tissue ablation probe, while delivering the attenuated power signal to the remaining ablation probes to which the nominal power signal is currently not delivered.

主权项

1. A method of treating tissue within a patient, comprising:
introducing a plurality of probes into the patient; sequentially delivering nominal ablation energy to each of a plurality of probes, while delivering attenuated ablation energy to a remainder of the plurality of probes; and ablating the tissue with the nominal ablation energy and attenuated ablation energy, wherein a difference between the nominal ablation energy and the attenuated ablation energy is determined based at least in part on a pre-existing characteristic of the tissue.