Provided is a manipulator (1) equipped with a movable part (3), a drive part (4) that generates power to be supplied to the movable part (3), an elongated, flexible long guide member (2) in which the movable part (3) is attached to one end and the drive part (4) is attached to the other end, an elongated tension transmitting member (5) through which a lumen inside the long guide member (2) passes and which transmits the power of the drive part (4) to the movable part (3) by means of tension, a tension adjusting mechanism (6) that adjusts the tension of the tension transmitting member (5), and a holding part to which the drive part (4) can be detachably attached, wherein: the tension adjusting mechanism (6) is equipped with a tensioner (14) which is movably provided in the direction orthogonal to the longitudinal direction of the tension transmitting member (5) and pulls the tension transmitting member (5), and a pressing member that is provided to the holding part and causes the tensioner (14) to move when the drive part (4) is attached to the holding part.Linvention fournit un manipulateur (1) qui est équipé : dune partie mobile (3) dune partie entraînement (4) qui génère une force motrice alimentant la partie mobile (3) dun élément de guidage allongé (2) souple et fin sur lequel est installée la partie mobile (3) à une extrémité et la partie entraînement (4) à lautre extrémité dun élément de transmission à force de traction (5) fin qui passe au travers dune lumière dune partie interne de lélément de guidage allongé (2), et qui transmet la force motrice de la partie entraînement (4) à la partie mobile (3) au moyen dune force de traction dun mécanisme dajustement de force de traction (6) ajustant la force de traction de lélément de transmission à force de traction (5) et dune partie soutien qui est installée de manière à permettre lattachement et le détachement de la partie entraînement (4). Le mécanisme dajustement de force de traction (6) est équipé : dun ten
