A treating instrument for an endoscopic treatment has a pair of treating members at the distal end of a sheath. The treating members are opened or closed in a beaklike manner by a control wire axially movably inserted in the sheath. A pair of links of different lengths are integrally connected to the...http://www.google.com.au/patents/US6033424?utm_source=gb-gplus-sharePatent US6033424 - Treating instrument for endoscope
