An ultrasound catheter is configured to be positioned at a treatment site within a patient's vasculature. The catheter comprises an elongate tubular body forming a utility lumen. The catheter further comprises an ultrasound assembly configured to be movably positioned within the utility lumen. The ultrasound...http://www.google.com/patents/US20050209578?utm_source=gb-gplus-sharePatent US20050209578 - Ultrasonic catheter with segmented fluid delivery
