Electrosurgical generator
AssigneeGyrus Medical Limited
InventorsMichael D. Newton, Richard J. Curtis
Life of this patent
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Abstract
An electrosurgical generator includes one or more radio frequency (RF) power sources and an output stage including at least two output lines for connection to an electrosurgical instrument. The generator includes means for measuring a parameter associated with the electrosurgical procedure, such as the impedance measured across two of the output lines. A controller controls the generator such that it delivers a first RF waveform (such as a cutting signal) or a second RF waveform (such as a coagulating signal) to the output lines, and, in a combined mode, both first and second waveforms. The controller automatically adjusts at least one aspect of one or both waveforms in the combined mode, in response to the measured parameter associated with the surgical procedure.
Claims18
An electrosurgical generator for generating radio frequency (RF) power for supply to an electrosurgical instrument, the generator comprising
- (i) at least one source of RF output power,
- (ii) an output stage including at least two output lines adapted to be connected to the electrosurgical instrument,
- (iii) means for measuring a parameter representative of the condition of the tissue encountered during the electrosurgical procedure, and
- (iv) a controller operable to control the generator system such that it is capable of delivering one of a first RF waveform to the output lines and a second RF waveform to the output lines, and, in a combined mode, delivering both first and second RF waveforms, the controller being such that, in the combined mode, the controller automatically adjusts a first proportion of an overall signal being the first RF waveform as compared to a second proportion of the overall signal being the second RF waveform in response to the measured parameter representative of the condition of the tissue during the surgical procedure.
Dependencies are inferred from the claim text.