A sphincter tissue region is treated using a support structure sized for advancement into the anal canal. At least one electrode is carried by the structure. A mechanism is coupled to the electrode to move the electrode between a first position retracted in the support structure and a second position...http://www.google.se/patents/US7056320?utm_source=gb-gplus-sharePatent US7056320 - Systems and methods for treating dysfunctions in the intestines and rectum
