Patent ID: 9451936
Filing Date: 2016-09-27
CPC Classification: A61B

Claim Text:
1. An endoscopic surgical tool which is inserted into a body endoscopically, the endoscopic surgical tool comprising: an endoscope that has a channel, the channel extending from a proximal end to a distal end along a longitudinal direction of the endoscope, the endoscope being configured to observe from the distal end; a wire having flexibility, the wire being configured to be inserted into the channel from an opening disposed at the proximal end, the wire having a first end configured to protrude from the distal end and a second end configured to protrude from the opening to outside of the body; a surgical section disposed on the first end of the wire, the surgical section being configured to perform treatment on living tissue in the body; a handle fixed to the second end of the wire, the second end of the wire protruding from the opening to the outside of the body, the handle being configured to operate the wire and to be rotated around the longitudinal direction; and a brittle section disposed on the wire between the handle and the opening, the brittle section being configured to, when a torsional load that is applied on the wire and causes the wire to rotate around the longitudinal direction is less than or equal to a predetermined torsional load, rotate the wire depending on rotation of the handle in the same direction as the handle rotating, and when the torsional load applied on the wire is greater than the predetermined torsional load, prevent the rotation of the handle from being transmitted to the wire.