Problem to be solved: to provide an insertion device capable of restraining insensitivity to the subject when an operation for insertion and removal is carried out using an auxiliary tool which can be rotated in the inserted portion.Insert equipmentInsert bodyThe cover body 90 is covered with a covering member 90 corresponding to the outer skin of the insert bodyA first rotary member 93 which rotates around a longitudinal axis of an insert body in response to a driving force supplied from a drive unitProvided on the inner peripheral surface of tube 111 which is mounted to cover a part of the outer peripheral surface of the insert bodyA second rotor 114 which rotates around the longitudinal axis of the insert body by force generated in accordance with the rotational motion of the first rotary body 93 contacting the cover member with the cover memberA first member 35C provided at a position to be covered with the tube 111 of the outer peripheral surface of the insertion part bodyHaving thermal conductivity lower than the first memberA second member 35A provided at a position including a portion not covered by the tube of the outer peripheral surface of the insertion part body.Diagram【課題】挿入部に装着された状態で回転可能な補助具を用いて挿入及び抜去に係る操作を行う際に被検者に対して与える違和感を抑制することが可能な挿入機器を提供する。【解決手段】挿入機器は、挿入部本体と、挿入部本体の外皮に相当する被覆部材90に覆われた状態で設けられ、駆動ユニットから供給される駆動力に応じて挿入部本体の長手軸周りに回転する第1の回転体93と、挿入部本体の外周面のうちの一部を覆うように装着されるチューブ111の内周面に設けられ、被覆部材を挟んで接触する第1の回転体93の回転運動に応じて生じた力により挿入部本体の長手軸周りに回転する第2の回転体114と、挿入部本体の外周面のうちのチューブ111により覆われる位置に設けられた第1の部材35cと、第1の部材35cよりも低い熱伝導性を有し、挿入部本体の外周面のうちのチューブにより覆われない部分を含む位置に設けられた第2の部材35aと、を有する。【選択図】図2