This endoscope 1 comprises: a direction change section 42 provided at the distal end portion of an insertion section 5; a long member 41 connected to the direction change section 42 and pulled and loosened to move the direction change section; a guide tube 45 through which the long member 41 is inserted; a sliding member 51 provided with a first contact section 53 to which the long member 41 is connected and which is in contact with the inner surface of the guide tube 45, the sliding member 51 being also provided with a second contact section 54 provided closer to the proximal end side than the first contact section 53 and in contact with the inner surface of the guide tube 45; a flow passage 56a, 56b having an opening 55 provided so that fluid flows into the clearance between the inner surface of the guide tube 45 and the outer peripheral surface of the sliding member 51, the opening 55 being formed between the first contact section 53 and the second contact section 54 in a direction intersecting the longitudinal axis of the sliding member 51; and an operating member 21, 22 for moving the sliding member 51 forward and backward relative to the guide tube 45.L'endoscope 1 selon l'invention comprend : une section de changement de direction 42 disposée au niveau de la partie d'extrémité distale d'une section d'introduction 5; un élément long 41 relié à la section de changement de direction 42 et tiré et desserré pour déplacer la section de changement de direction; un tube de guidage 45 à travers lequel l'élément long 41 est introduit; un élément coulissant 51 pourvu d'une première section de contact 53 à laquelle l'élément long 41 est relié et qui est en contact avec la surface interne du tube de guidage 45, l'élément coulissant 51 étant également pourvu d'une deuxième section de contact 54 disposée plus près du côté d'extrémité proximale que la première section de contact 53 et en contact avec la surface interne du tube de guidage 45; un passage d'écoulement 56a, 56b