PROBLEM TO BE SOLVED: To provide a sheath set and an endoscope system which can reduce the number of types of tools to be used and can reduce an X-ray exposure dose.SOLUTION: A sheath set 10 having a predefined flexibility includes: an outer-layer sheath 20 having a thin and long through hole 23 along a sheath center axis a21 and an inner-layer sheath component 30 divided into a plurality of parts and configured to be less likely to curve compared to the outer-layer sheath 20, the inner-layer sheath component 30 increasing a rigidity of the outer-layer sheath 20 by assembling all parts thereof into the through hole 23 of the outer-layer sheath 20 so as to be insertable into and removable from the through hole 23 of the outer-layer sheath 20.SELECTED DRAWING: Figure 3BCOPYRIGHT: (C)2019,JPO&INPIT【課題】使用器具の種類を減少させ、X線の被曝量の低減を図れるシースセット及び内視鏡システムを提供する。【解決手段】シースセット10は、予め定めた可撓性を有し、シース中心軸a21に沿って細長な貫通孔23を有する外層シース20と、複数に分割されていて外層シース20に比べて曲がり難く構成されていて、外層シース20の貫通孔23に対して挿抜が可能で外層シース20の貫通孔23内に全て組み付け配置することによって外層シース20を硬性にする内層シース構成部材30と、を備えている【選択図】図3B
