An ultrasound system has a catheter including an elongate flexible catheter body having at least one lumen extending longitudinally therethrough. The catheter further includes an ultrasound transmission member extending longitudinally through the lumen of the catheter body, the ultrasound transmission...http://www.google.ca/patents/US7393338?utm_source=gb-gplus-sharePatent US7393338 - Therapeutic ultrasound system
