Expandable stent and method for delivery of same

A - Human Necessities – 61 – F

Patent

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A61F 2/04 (2006.01) A61F 2/06 (2006.01) A61F 2/00 (2006.01)

Patent

CA 2175722

An expandable stent comprising a proximal end and a distal end in communication with one another. A tubular wall is disposed between the proximal end and the distal end. The tubular wall having a longitudinal axis and a poroussurface defined by a plurality intersecting members arranged to define a first repeating pattern comprised of a polygon. The polygon has a pair of side walls substantially parallel to the longitudinal axis, a concave-shaped first wall having a first apex and a convex-shaped second wall having a second apex, the first wall and the second wall connecting the side walls. At least one of the first apex and the second apex is substantially flat. The stent is expandable from a first, contracted position to a second, expanded position upon the application of a radially outward force on the stent. A bifurcated stent including the first repeating pattern is also described.

Stent extensible comprenant une extrémité proximale et une extrémité distale communiquant l'une avec l'autre. Une paroi tubulaire se trouve entre l'extrémité proximale et l'extrémité distale. La paroi tubulaire a un axe longitudinal et une surface poreuse délimitée par un certain nombre d'éléments entrecoisés disposés de manière à délimiter un premier motif répétitif composé d'un polygone. Le polygone compte deux parois latérales essentiellement parallèles à l'axe longitudinal, une première paroi concave comportant un premier sommet et une deuxième paroi convexe comportant un deuxième sommet, la première paroi et la deuxième paroi reliant les parois latérales. Au moins un des premier et deuxième sommets est essentiellement plat. Le stent est extensible d'une première position rétractée à une deuxième position déployée à l'application d'une force s'exerçant radialement vers l'extérieur. Un stent bifurqué comprenant le premier motif qui se répète est également décrit.

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