Steerable catheters are provided including an elongated flexible member having a proximal end, a distal end and a lumen extending therebetween (i.e., between the proximal end and the distal end). A plurality of electrical cables is bundled together and positioned within the lumen of the flexible member....http://www.google.se/patents/US7507205?utm_source=gb-gplus-sharePatent US7507205 - Steerable ultrasound catheter
