An intravascular catheter for providing access to distal vascular sites. The intravascular catheter comprises an elongate shaft with a lumen extending therethrough. The elongate shaft is comprised of a composite construction and has a proximal relatively stiff section, a distal section relatively more...http://www.google.com/patents/US5358493?utm_source=gb-gplus-sharePatent US5358493 - Vascular access catheter and methods for manufacture thereof
