A clip device for holding a living tissue, wherein a clip operating force adjustment portion is provided with a hold member placed in a state of relatively increasing a ratio of a clip closing force to close clip hands to a clip opening force to expand the clip hands of a clip when operating the cli...http://www.google.fr/patents/US7108699?utm_source=gb-gplus-shareBrevet US7108699 - Clip device for holding a living tissue
