An electrosurgical probe including a metal cannula, partially provided with an electroinsulating coating, and filiform electrodes housed in the cannula in a stretched position. The filiform electrodes are provided with an elastic memory of an arched shape and as a result, come out from the cannula to...http://www.google.co.uk/patents/US6623481?utm_source=gb-gplus-sharePatent US6623481 - Electrosurgical probe for tumor treatment by radiofrequency
