A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 18/12 (2006.01) A61B 18/08 (2006.01) A61B 18/14 (2006.01) A61B 18/18 (2006.01) H05B 1/00 (2006.01) H05B 3/02 (2006.01) A61B 17/00 (2006.01)
Patent
CA 2179144
An electrosurgical system including an electrode assembly having two electrodes for use immersed in an electrically conductive fluid has a generator with control circuitry for rapidly reducing the delivered radio frequency output power by at least 50% within at most a few cycles of the peak radio frequency output voltage reaching a predetermined threshold limit. In this way, tissue coagulation can be performed in, for example, saline without significant steam generation. The same peak voltage limitation technique is used in a tissue vaporisation or cutting mode to limit the size of the steam pocket at the electrodes and to avoid electrode burning.
Goble Colin Charles Owen
Goble Nigel Mark
Gyrus Medical Limited
Riches Mckenzie & Herbert Llp
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