An endoscopic high-frequency treatment tool includes an insulating flexible sheath; a conductive stranded wire made of metal; and a cover sheath which is fitted on a portion of the conductive stranded wire in the vicinity of a end thereof. The conductive stranded wire is inserted into the insulating...http://www.google.se/patents/US7601151?utm_source=gb-gplus-sharePatent US7601151 - Endoscopic high-frequency treatment tool
