Inventors:
Gerald Dodd - San Antonio TX, US
Rex Boykin - San Antonio TX, US
Hayden Head - San Antonio TX, US
International Classification:
A61B 18/18
Abstract:
Apparatus and methods suitable for electromagnetic ablation of targeted tissue provide for improved control over ablation size and shape. In various embodiments, a plurality of dispersive electrodes may be arranged in a circumferential manner in close proximity to a targeted tissue region. The dispersive electrodes may be individually controlled to alternately enable/disable the electrodes to provide for different current paths between an active electrode and one or more of the dispersive electrodes. Other embodiments are described and claimed.