| abstract |
The endoscope treatment tool (1) has a distal end and a proximal end, a shaft (2) having a lumen along the longitudinal axis, and a blade provided between the distal end and the proximal end of the shaft (2). (8), a distal-side index (11) disposed on the blade (8), and a proximal-side index disposed on the proximal side of the shaft (2) on the blade (8) with respect to the distal-side index (12), and when the tip of the shaft (2) is located at a branch portion between the common bile duct and the gallbladder duct in a state where the shaft (2) is raised by the raising base of the endoscope, The distal-side index (11) is located in the observation field of view by the observation optical system of the endoscope, and the proximal side is located when the distal end of the shaft (2) is located at a branch portion between the right liver tube and the left liver tube. The index (12) is located in the observation field of view by the observation optical system of the endoscope. |