Treating device for endoscopes

摘要

A treating device is inserted into the body cavity of a subject through a sheath by freely moving an operation wire in a forward/backward direction. A treating unit is connected to the forward end of the operation wire and includes a plurality of elastic wires extending from the forward end to the back end, a tip cap for holding the forward ends of the elastic wires, and a holding member for holding the back ends of the elastic wires. The respective elastic wires have first to fifth bent points in a position from the forward end to the back end thereof. The first and fifth bent points are projected inwardly relative to the center of the treating unit and second to fourth bent points are projected outwardly away from the center of the treating unit. All sections or sides each defined between the adjacent corresponding bent points of elastic wires are inclined at given angles to the center axis of the treating unit when they are spread out from the distal end of the sheath.