Non-foreshortening intraluminal prosthesis

Details Non-foreshortening intraluminal prosthesis Non-foreshortening intraluminal prosthesis

A - Human Necessities

61

F

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

Patent

CA 2280131

An intraluminal prosthesis (40) is provided with a plurality of annular elements. Each annular element includes a plurality of struts (42, 44) and apices (46) connected to form an annular configuration. Each annular element has a compressed state and an expanded state, and has a longitudinal dimension which is smaller in the expanded state than in the compressed state. A plurality of connecting members (48) connect the apices of adjacent annular elements. The connecting members have a plurality of alternating segments that function to compensate for the smaller longitudinal dimension of each annular element in the expanded state. The stent may be provided with varying flexibility along its length and/or circumference, and may include segments that have different diameters.

L'invention concerne une prothèse intraluminale (40) comportant une pluralité d'éléments annulaires. Chaque élément annulaire, qui comprend une pluralité d'étais (42, 44) et de sommets (46) reliés de façon à donner une configuration annulaire, peut se présenter à l'état comprimé ou à l'état dilaté, et a une dimension longitudinale plus petite à l'état dilaté qu'à l'état comprimé. Une pluralité d'éléments de liaison (48) relient les sommets des éléments annulaires adjacents. Les éléments de liaison sont constitués d'une pluralité de segments disposés de manière alternée, destinés à compenser le fait que la dimension longitudinale de chaque élément annulaire est plus petite à l'état dilaté. L'endoprothèse peut avoir une flexibilité qui varie le long de sa longueur et/ou de sa circonférence, et comporter des segments ayant des diamètres différents.

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