Methods for fragmenting atherosclerotic material within a zone of attention within a blood vessel are provided. An intravascular catheter device includes a balloon and a plurality of incising devices spaced apart about an outer surface of the balloon and extending parallel with a longitudinal axis of the balloon. The balloon is manipulated along a guide wire to a distal portion of the zone of attention. The balloon is inflated and retracted along the zone of attention to incise and fragment the atherosclerotic material. The balloon is deflated.
