A stent (10) formed from cannula and having flexible segments (11) and high hoop strength segments (12) alternating therealong. Axial tie bars (21,22) interconnect the segments; minimal length reduction would occur upon expansion. In the high hoop strength segment (12), struts (16) are initially parallel...http://www.google.fr/patents/US6743252?utm_source=gb-gplus-shareBrevet US6743252 - Cannula stent
