An intravascular catheter comprises a length of flexible plastic tubing which, in turn, comprises an outer plastic layer and an inner plastic layer. The plastic materials of the outer and inner layers are different, and may be chemically bonded to each other. Advantages in catheter design are achiev...http://www.google.fr/patents/US5538510?utm_source=gb-gplus-shareBrevet US5538510 - Catheter having coextruded tubing
