A catheter includes a steering tendon and a longitudinally adjustable core having a curved shape in the distal portion thereof. The steering tendon is attached to the distal-end region of the catheter sheath. The proximal end of the core is coupled to a positioning mechanism within the catheter handle...http://www.google.fr/patents/US6616628?utm_source=gb-gplus-shareBrevet US6616628 - Steerable catheter with a longitudinally adjustable curved core
Steerable catheter with a longitudinally adjustable curved core