Abstract: An ultrasonic revasculizer for creating holes or openings in the heart to revasculize infarcted or blocked areas to create collateral blood flow to the damaged area of the heart is described which includes an elongated handle having an elongated flexible tubular neck extending from one end thereof. An enlarged depth guard is provided at the distal end of the neck and has an ultrasonic needle selectively longitudinally movably extending therethrough. A manual control in the form of a slide button is movably mounted in the handle and is operatively connected to the needle for controlling the longitudinal movement of the needle with respect to the depth guard. A depth gauge is provided on the handle adjacent the slide button which indicates the longitudinal position of the needle with respect to the depth guard. The needle is operatively connected to a source of ultrasonic power for ultrasonically driving the needle.