One embodiment comprises an apparatus for applying energy to a hollow anatomical structure having an inner wall. The apparatus comprises an elongate shaft having a distal end and a proximal end opposite the distal end; and a capacitive treatment element located near the distal end. The capacitive treatment...http://www.google.com.tw/patents/US20060085054?utm_source=gb-gplus-share專利 US20060085054 - Methods and apparatus for treatment of hollow anatomical structures
