An ablation electrode system includes a handle assembly; a needle electrode assembly supported in and extending from the handle assembly. The needle electrode assembly includes an outer tube having at least a conductive distal tip and defining a cavity therein; and an inner tube disposed at least partially...http://www.google.es/patents/US7763018?utm_source=gb-gplus-sharePatente US7763018 - Cool-tip thermocouple including two-piece hub
