Sectional crimped graft

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/06 (2006.01) A61F 2/04 (2006.01) A61L 27/18 (2006.01) D01D 5/22 (2006.01) D01D 5/24 (2006.01) D01D 10/02 (2006.01) D02J 13/00 (2006.01)

Patent

CA 2498162

The present invention provides a sectional crimped graft that allows graft flexibility where required and limits the overall longitudinal extension. The present invention overcomes the disadvantage of fully crimped grafts by controlling the number of crimps per unit length, crimp height, crimp geometry and their location along the graft wall, dependent on the particular end-use application. In so doing, flexibility and elongation can be controllably tailored only in areas where significant anatomical angulation is present. It may also be useful in applications other than stent grafts such as surgical grafts for aortic and peripheral areas. Limiting the overall graft longitudinal extension also facilitates the deployment of the stent-graft into the blood vessel.

La présente invention concerne un greffon à sections pliées offrant, si nécessaire, une certaine flexibilité de greffon et limitant l'extension longitudinale totale. Ladite invention pallie aux inconvénients de greffons entièrement pliés en contrôlant le nombre de plis par longueur d'unité, la hauteur de pli, la géométrie de pli et l'emplacement des plis le long de la paroi du greffon, en fonction de l'application finale particulière desdits greffons. La flexibilité et l'allongement peuvent être ainsi contrôlés sur mesure dans des zones présentant une angulation anatomique significative. Ladite invention peut être également utilisée dans des applications autres que des endoprothèses, telles que des greffons chirurgicaux pour régions aortiques et périphériques. La limitation de l'extension longitudinale totale du greffon facilite également le déploiement de l'endoprothèse à l'intérieur du vaisseau sanguin.

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