Patent ID: 7824407
Filing Date: 2010-11-02
Classification: A61B

Abstract:
1. A treatment tool for an endoscope which grasps an object of treatment, comprising: a flexible sheath; a forward-and-backward moving section disposed inside the sheath so as to be capable of freely moving forward and backward, and having a distal end; and elastic grippers having a pair of arms whose proximal ends are connected to the distal end of the forward-and-backward moving section, wherein each of the pair of arms includes: a connector connecting with the forward-and-backward moving section; a bent portion disposed closer to a distal end of the arm than the connector, and bent at a fixed angle relative to the forward and backward directions of the forward-and-backward moving section; a rectilinear portion maintaining the angle from the bent portion and extending linearly toward the distal end of the arm; and a distal clasp disposed at a distal end of the rectilinear portion, for engaging with the object of treatment, wherein in conjunction with the forward and backward movement operation of the forward-and-backward moving section, the distal ends of the pair of arms are deployed when the pair of arms are projected from a distal end of the sheath, and the distal ends of the pair of arms are closed by elastic deformation when the pair of arms are moved into the sheath, and wherein the rectilinear portions and the bent portions of each of the pair of arms form a first deployment plane and a second deployment plane respectively, the first deployment plane and the second deployment plane being parallel with each other, and the first and second deployment planes are distinct.