A medical device for removing an object within a living body lumen includes a rotatable tubular driven shaft having a leading-out hole opening in a proximal portion of the driven shaft, a cutting unit disposed on a distal side of the driven shaft, the cutting unit cutting an object while rotating together with the driven shaft, and a suction tubular body having a distal portion and a proximal portion, the distal portion of the suction tubular body being located within the driven shaft, the proximal portion of the suction tubular body being located outside the driven shaft and extending in a direction of separating from the driven shaft outward in a radial direction of the driven shaft.
