TREATMENT TOOL FOR ENDOSCOPE, TREATMENT TOOL UNIT AND TREATMENT SYSTEM

摘要

A treatment tool for an endoscope has a guide pipe and a guide sheath. The guide pipe allows an insertion part to be inserted therein such that the front end side of a distal end of the insertion part and the front end side of a first distal end are observable through the first distal end by using an observation optical system of the endoscope, or the front end side of the distal end of the insertion part is observable by using the observation optical system of the endoscope in a state in which the distal end of the insertion part protrudes from the first distal end. The guide sheath has an inner diameter which allows the insertion part to be inserted therein such that the distal end of the insertion part is protrudable from a second distal end thereof, and is inserted into the guide pipe such that the second distal end of the guide pipe is protrudable from the first distal end.