A body section 2 is formed with a capsule insertion hole 6. A movable section 3 includes a capsule puncture needle 9 arranged to be moved into or out of the capsule insertion hole 6. The body section 2 and the movable section 3 are connected to be relatively pivoted at least between a posture in which the capsule insertion hole 6 is exposed, and a posture in which the capsule insertion hole 6 is hid by the body section 2. The body section 2 (a side wall 6e of a protrusion 6a) is arranged to restrict the advancing movement of the capsule puncture needle 9 in the state in which the body section 2 and the movable section 3 are in the posture in which the capsule insertion hole 6 is exposed.
