PROBLEM TO BE SOLVED: To provide a raspatorium for a percutaneous endoscope, which can be inserted into a slender outer cylinder, the tip side of which is curved, and which has sufficient strength even against axial pressure applied to a tip of the raspatorium.SOLUTION: In an appliance of the present invention, since a bore is a straight slot in a cross-section in a curved part of an outer cylinder, a raspatorium body formed as a flat plate can be curved in a longitudinal direction. On the other hand, the bore is a curved slot in the cross-section at a tip part of the outer cylinder, and the raspatorium body is also curved in a lateral direction. Thus, strength against a deformation action caused by axial pressure applied to the tip of a raspatorium is obtained.COPYRIGHT: (C)2015,JPO&INPIT【課題】経皮的内視鏡用ラスパで、細長い外筒に挿入可能で先端側が湾曲し,ラスパ先端への軸圧に対しても十分な強度があることを目的とする。【解決手段】本発明の器具は外筒湾曲部では内腔が横断面において直線的な長孔であるため平板であるラスパ本体は長軸方向において弯曲することができ,一方で外筒先端部では内腔が横断面において弯曲した長孔でありラスパ本体も横方向に弯曲するためラスパの先にかかる軸圧による変形作用に抗する強度が得られる.【選択図】図3
