An insertion portion, an operation portion 5, a pull wire 10, a joy stick 15, and a guide roller 14 that is provided outside an action range of a frame body 11 that acts by being linked with tilt of an operation element 8 and a shaft 9 in the operation portion 5, and changes a travel direction of the pull wire 10 that is extended in a height direction Z from the frame body 11 so that the pull wire travels outside the action range of the frame body 11 to a front side in an insertion direction S.
