PROBLEM TO BE SOLVED: To provide a self-running type endoscope in which a quick movement is possible with a simple configuration.SOLUTION: A self-running type endoscope 3 comprises: a tip end part 11 a self-running mechanism unit 20 and an insertion part 12. The self-running mechanism unit 20 comprises a holding unit 30A that has: a front pipe 33A that has a foam fluorine tube body 33, which has a gap enabling ventilation of an interior surface side and an exterior surface side, is freely deformable and is set to a predetermined length, an expansion unit 31A that is slidably arranged on an outer peripheral surface of the foam fluorine tube body 33, and is formed to be freely expandable with a plurality of slits 31s provided along a center axis a bellows 32A that is arranged on the exterior surface of the foam fluorine tube body 33, foldable in a center axis direction and has an air leakage prevented and a holding space S1 to which air is supplied via a connection tube 61b. The self-running type endoscope has the holding part 30A on a tip end part 11 side and on an insertion part 12 side, respectively.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2019,JPO&INPIT【課題】簡単な構成で、管内において速やかな移動が可能な自走式内視鏡を提供する。【解決手段】自走式内視鏡3は、先端部11、自走機構部20、及び挿入部12を備え、自走機構部20には内面側と外面外方とを通気可能にする隙間を有する変形自在で予め定めた長さに設定された発泡フッ素チューブ体33を有する前方管33Aと、発泡フッ素チューブ体33の外周面上に摺動自在に配置される中心軸に沿って複数のスリット31sを設けて拡張自在に形成された拡張部31Aと、発泡フッ素チューブ体33の外周面上に配置される中心軸方向に折り畳み可能で空気漏れが防止されている蛇腹32Aと、連結チューブ61bを介して空気が供給される保持空間S1と、を有する保持部30Aを備え、保持部30Aを先端部11側と挿入部12側とにそれぞれ有する。【選択図】図2
