Electrosurgical system employing multiple electrodes and...

Details Electrosurgical system employing multiple electrodes and... Electrosurgical system employing multiple electrodes and...

A - Human Necessities

61

B

A61B 18/12 (2006.01)

Patent

CA 2522415

A system and method for heat ablation of tissue in which energy is sequentially applied to at least two electrodes inserted into tissue. The system is comprised of a radiofrequency (RF) source for supplying RF energy, at least two electrodes configured to apply RF energy to tissue, at least one return electrode for returning the RF energy to the RF source, and a controller configured to sequentially apply the RF energy to each of the at least two electrodes. The sequential delivery of energy is determined by the measured current and voltage, the calculated impedance at each of the electrodes and the timing for each electrode. An internal load may be activated with the previously activated channel and remain on until the next channel is activated to avoid the generator from having an open circuit.

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