Patent ID: 7993332
Filing Date: 2011-08-09
Classification: A61B

Abstract:
1. An electrosurgical system comprising: a generator system for generating radio frequency (RF) power, and an electrosurgical instrument including an instrument shaft, at the distal end of which is an electrode assembly including three or more electrodes, the generator system comprising: (i) one or more sources of RF output power, and (ii) a controller operable to control the generator system such that it is capable of delivering a first RF waveform to the electrosurgical instrument or a second RF waveform to the electrosurgical instrument, and, in a combined mode, to deliver both first and second RF waveforms, the electrosurgical system further comprising means for feeding the RF waveforms to the three or more electrodes such that, in the combined mode, the first RF waveform is delivered between a first pair of the three or more electrodes, and the second RF waveform is delivered between a second pair of the three or more electrodes, and the controller is operable to cause the feeding means to switch constantly between delivering the first RF waveform between the first pair of electrodes and delivering the second RF waveform between the second pair of electrodes, the first and second RF waveforms being different one from the other.