A medical treatment endoscope includes: a flexible sheath capable of a bending operation; a viewing unit for observing the vicinity of the tip relative to the sheath; an arm section protruding from the tip of the sheath and capable of bending operation; an operation section for operating the arm section;...http://www.google.fr/patents/US20080287737?utm_source=gb-gplus-shareBrevet US20080287737 - MEDICAL TREATMENT ENDOSCOPE
