Problem to be solved: to provide an endoscope insertion assist device capable of being applied to the insertion into a small subject by a simple constitution.Solution: a base member 6 having an insertion hole 10A through which an insertion portion of an endoscope can be inserted, a plurality of roller shafts 25 which extend in a direction perpendicular to the central axis O of the insertion hole 10a and are rotated symmetrically with respect to the central axis O and are supported on the base member 6, and on the projection surface of the insertion hole A plurality of rollers 26, which are provided on each of the roller shafts 25 at least in the overlapped condition, and engaged with the insertion portion inserted in the insertion hole 10a to abut by the abutment and transmit the rotation of the roller shaft 25, and central axisA drive shaft 27 extends in the direction along the O, and is capable of transmitting a driving force to each of the roller shafts 25, a ring gear 28 for simultaneously transmitting a driving force to each drive shaft 27, and a motor 9 for driving the ring gear 28.Selection diagram【課題】簡単な構成により、狭い被検体内への挿入にも適用することができる内視鏡挿入補助装置を提供する。【解決手段】内視鏡の挿入部を挿通可能な挿通孔10aを備えたベース部材6と、挿通孔10aの中心軸Oに対して直角方向に延在し、且つ、中心軸Oに対して回転対称となるようベース部材6に支持された複数のローラ軸25と、挿通孔10aの投影面上に少なくとも一部が重なる状態にて各ローラ軸25にそれぞれ設けられ、挿通孔10aに挿通された挿入部を当接により把持してローラ軸25の回動を伝達する複数のローラ26と、中心軸Oに沿う方向に延在し、各ローラ軸25にそれぞれ駆動力を伝達可能に接続された駆動軸27と、各駆動軸27に対して同時に駆動力を伝達するリングギヤ28と、リングギヤ28を駆動するモータ9と、を有する。【選択図】図15
