A proposed segmented circular dispersive electrode with concentric annular zones and series resistors theoretically achieves a more uniform current density, potentially reducing perimetrical burns.
Theoretical modeling suggests that segmenting electrosurgical dispersive electrodes and using current-leveling resistors can prevent perimetrical burns by ensuring uniform current distribution.
An idealized model for a circular electrosurgical dispersive electrode is analyzed by solving Laplace's equation for the potential distribution. The resulting analytical solution shows the origin of the perimetrical burn problem, and, simultaneously, points the way toward improved electrode designs. One possible improved electrode design, a segmented circular electrode in which the annular segments are connected to the RF generator through a series of current-leveling resistors, is proposed and discussed. Extensions of this concept and future areas for research are also discussed.
Wiley et al. (Sat,) conducted a other in Electrosurgical burns. Segmented circular dispersive electrode vs. Continuous circular disk electrode was evaluated on Current density distribution. A proposed segmented circular dispersive electrode with concentric annular zones and series resistors theoretically achieves a more uniform current density, potentially reducing perimetrical burns.
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