US 11,980,341 B2
Endoscope treatment tool
Yuya Hidaka, Tokyo (JP); and Chika Miyajima, Tokyo (JP)
Assigned to OLYMPUS CORPORATION, Tokyo (JP)
Filed by OLYMPUS CORPORATION, Tokyo (JP)
Filed on Mar. 10, 2021, as Appl. No. 17/197,285.
Application 17/197,285 is a continuation of application No. PCT/JP2018/033939, filed on Sep. 13, 2018.
Prior Publication US 2021/0196104 A1, Jul. 1, 2021
Int. Cl. A61B 1/00 (2006.01); A61B 17/00 (2006.01); A61B 17/29 (2006.01); A61B 18/14 (2006.01)
CPC A61B 1/00101 (2013.01) [A61B 1/00087 (2013.01); A61B 1/00089 (2013.01); A61B 1/00137 (2013.01); A61B 17/00234 (2013.01); A61B 17/29 (2013.01); A61B 18/1445 (2013.01); A61B 2017/00296 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An endoscope treatment tool comprising:
a cylindrical distal-end member configured to be attached to a distal end of an endoscope;
a grasping tool provided at a first side of the distal-end member relative to a longitudinal axis of the endoscope and extending on an outer side surface of the endoscope along the longitudinal axis of the endoscope, a distal portion of the grasping tool is configured to grasp biological tissue, and is movable in a first direction away from the first side and in a second direction toward from the first side;
an electrode protruding distally from a distal face of the distal-end member; and
an electrode driving portion configured to move the electrode in the first direction and in the second direction, the electrode driving portion comprising:
a tube, a distal end of the tube is fixed to a second side of the distal-end member, the second side is opposed to the first side relative to the longitudinal axis;
a wire movably disposed within the tube, the wire connected to the electrode for moving the electrode in one of the first direction and the second direction; and
an elastic member disposed at a distal end of the distal-end member between the first side and the second side, the elastic member biasing the electrode in an other of the first direction and the second direction.