Variable thickness stent and method of manufacture thereof

Details Variable thickness stent and method of manufacture thereof Variable thickness stent and method of manufacture thereof

A - Human Necessities

61

F

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

Patent

CA 2376069

The invention is directed to a stent having varying thickness, with the thickness selected based at least in part on the flexing characteristics of the particular portion of the stent. The stent is formed with a pattern having flexing and stable portions, with the flexing portions contributing to stent flexibility during stent positioning and deployment. One or more flexing portions are provided with a nominal thickness, and at least some stable portions are provided with a greater-than-nominal thickness. The resulting stent has excellent flexibility, strength, and radiopacity characteristics. The stent may be formed using various approaches, including using a tubular member, flat sheet, or wire.

L'invention concerne un stent présentant une épaisseur variable, cette épaisseur étant choisie en fonction, au moins en partie, des caractéristiques de flexion d'une partie particulière dudit stent. Ce stent est formé d'un motif présentant des parties stables et des parties de flexion, lesdites parties de flexion contribuant à la flexibilité du stent pendant son positionnement et son déploiement. Au moins une partie de flexion possède une épaisseur nominale, et au moins certaines parties stables possèdent une épaisseur plus grande que l'épaisseur nominale. Le stent résultant possède d'excellentes caractéristiques de flexibilité, de résistance, et de radiopacité. Il peut être formé à l'aide de différentes approches, notamment par utilisation d'un élément tubulaire, d'une feuille plate, ou d'un fil.

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