Patent ID: 8211097
Filing Date: 2012-07-03
Classification: A61B

Abstract:
1. An electro-surgical system for treating a patient, the system comprising: an electrode assembly that includes at least one electrode for contacting a target region of the skin of a patient, wherein each of the at least one electrodes includes at least one edge temperature sensor at an edge region of the electrode and configured to generate a corresponding edge temperature signal and at least one center temperature sensor at a center region of the electrode and configured to generate a corresponding center temperature signal; a power generator configured to provide RF power to the electrode assembly at an operating frequency; and a control unit adapted to receive the edge temperature signal and the center temperature signal, the control unit configured to provide a frequency control signal to the power generator such that, in the event that the edge temperature of the electrode is high compared to the center temperature of the electrode, then the frequency control signal causes the power generator to increase the operating frequency thereby driving heat to the center region of the electrode, and in the event that the center temperature of the electrode is high compared to the edge temperature of the electrode, then the frequency control signal causes the power generator to decrease the operating frequency thereby driving heat to the edge region of the electrode.