Patent ID: 7402162
Filing Date: 2008-07-22
Classification: A61B,B26D

Abstract:
1. A high frequency treatment instrument for an endoscope, comprising: an insulative flexible sheath; an operation wire inserted in the flexible sheath so as to be movable along an axial direction of the operation wire in the flexible sheath; and a hook-like electrode attached to a tip of the operation wire, wherein the hook-like electrode includes: a rod-like part that extends parallel to the axial direction of the operation wire and is spaced from an axis of the operation wire; and a slanting part that extends from a tip of the rod-like part in a slanting direction to cross the axis of the operation wire; and a hook part that extends from the slanting part in a direction to cross the axis of the operation wire; and wherein the hook part extends straight from a tip of the slanting part and then bends in a lateral direction to cross the axis of the operation wire, and the rod-like part, the slanting part and the hook part lie in one plane; and wherein the hook-like electrode is retractable into the flexible sheath to an extent that the entire rod-like part is within the flexible sheath.