Expandable medical device with differential hinge performance

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/06 (2006.01)

Patent

CA 2598164

The stent (1 ) described herein is configured with expandable rings (20, 20a) at either end of the stent having increased radial strength compared to the expandable middle rings (20) This difference between the configuration of the stent at the middle and he ends of the stent (10) results in more even expansion properties for the stent, better crimping properties of the stent and uniform diameter post deployment The expandable rings 20, 20a) are formed by a plurality of struts (22) and a plurality of ductile hinges (24) arranged such that upon expansion, the ductile hinges are deformed while the struts are not deformed

Le stent décrit est configuré par des anneaux extensibles sur une extrémité du stent ayant une résistance radiale accrue par rapport aux anneaux extensibles du milieu. Cette différence entre la configuration du stent au milieu et aux extrémités de celui-ci se traduit par une augmentation de propriétés d'expansion du stent, un meilleur sertissage de celui-ci et un déploiement des barres à diamètre uniforme. Les anneaux extensibles sont formés par une pluralité de plaquettes et une pluralité d'articulations dilatables disposées de manière à se déformer, après extension, sans pour autant déformer les plaquettes.

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