Patent ID: 8496697
Filing Date: 2013-07-30
Classification: A61F

Abstract:
1. A stent-graft comprising: an inner stent having a wall structure including juxtaposed strut-patterns with interconnected struts and connectors connecting the strut-patterns, the wall structure of the inner stent having a predetermined length; an outer stent coaxially arranged around the inner stent and having a wall structure including juxtaposed strut-patterns with interconnected struts and connectors connecting the strut-patterns, the wall structure of the outer stent having a predetermined length; and a flexible stretchable material layer arranged between the inner stent and the outer stent, the wall structure of the inner stent having a design differing from the design of the wall structure of the outer stent , and the length of the inner stent being equal to the length of the outer stent; wherein the struts of the inner stent are shorter than the struts of the outer stent and wherein straight connectors of the inner stent are provided between strut patterns at both ends of the inner stent, the connectors being shorter than straight connectors of the outer stent between strut patterns at both ends of the outer stent; and wherein s-shaped connectors connect all the remaining strut patterns of the inner and outer stents except the two strut patterns at the ends of the inner and outer stent.