MEDICAL DEVICE AND METHOD OF CONTROLLING SAME

A medical device configured to suppress a thrombus from being formed and a method for controlling the medical device are provided.The medical device (10) according to the present embodiment includes: the expansion body (21) configured to expand and contract in a radial direction; the elongated shaft portion (20) including the distal portion (30) including the proximal end fixing portion (31) to which a proximal portion of the expansion body (21) is fixed; the plurality of electrodes (22) disposed along the expansion body (21); and the current supply unit (101) that supplies a current to the electrodes (22), in which the expansion body (21) includes the recess portion (51) recessed radially inward and defining the reception space (51b) configured to receive a biological tissue when the expansion body (21) expands, the plurality of electrodes (22) are arranged along the recess portion (51) to face the reception space (51b), and the current supply unit (101) is controlled to repeat supply and stop of a current to the electrodes (22) at least twice.