Patent ID: 7282049
Filing Date: 2007-10-16
Classification: A61B

Abstract:
1. A system for heat ablation of tissue in a patient comprising: a plurality of electrodes operatively connected to a source of radiofrequency energy and configured to apply RF energy to tissue at a patient site; a plurality of RF current restricting circuits, each circuit coupled between one of said plurality of electrodes and said source of radiofrequency energy, and configured to restrict RF energy to said electrode when said current restricting circuit is enabled and not restrict RF energy to flow to said electrode when said current restricting circuit is disabled; at least one return electrode adapted to contact the patient and configured to return RF energy to the RF source; and a switching mechanism configured to selectively enable each of said plurality of RF current restricting circuits, in one of a sequential and non sequential fashion, wherein said switching mechanism is isolated from each of said current restricting circuits.