A bipolar, plasma-generating electrosurgical apparatus and system wherein the return electrode is enclosed within an electrosurgical shaft, and the active electrode is located on the outside surface of the shaft such that in treating the tissue, the tissue is exposed to plasma generated on the active...http://www.google.ca/patents/US7879034?utm_source=gb-gplus-sharePatent US7879034 - Internally located return electrode electrosurgical apparatus, system and method
