Patent ID: 7344532
Filing Date: 2008-03-18
Classification: A61B

Abstract:
1. An electrosurgical generator system for generating radio frequency power, comprising: (i) a radio frequency output stage having three or more output connections, (ii) one or more sources of radio frequency output power coupled to the output stage, (iii) a controller operable to cause the system to supply a first cutting RF waveform to the output connections or a second coagulating RF waveform to the output connections, and, in a combined mode, to deliver both first and second RF waveforms, the controller including means for feeding the waveforms to the output connections such that the first RF waveform is delivered between a first pair of the output connections, and the second RF waveform is delivered between a second pair of the output connections, the arrangement of the system being such that the combined mode is adjustable between various settings, each setting having a different proportion of the first and second RF waveforms, and that, in response to an operator-actuated input signal, the controller causes the system to supply an output waveform sequence starting at a predetermined start setting, ending at a predetermined end setting, and changing between the start and end settings according to a predetermined progression.