Stent having adjacent elements connected by flexible webs

Details Stent having adjacent elements connected by flexible webs Stent having adjacent elements connected by flexible webs

A - Human Necessities

61

F

A61F 2/06 (2006.01) A61F 2/86 (2006.01) A61F 2/88 (2006.01) A61F 2/90 (2006.01)

Patent

CA 2711831

A stent (60) incorporating flexible, preferably polymeric, connecting elements (32) into the stent wherein these elements connect adjacent, spaced-apart stent elements (62). Preferably the spaced-apart adjacent stent elements are the result of forming the stent from a helically wound serpentine wire having space provided between adjacent windings. Other stent forms such as multiple, individual spaced-apart ring-shaped or interconnected stent elements may also be used. The connecting elements are typically web-shaped and result from creating slits or apertures in a covering of graft material applied to the stent and then, for example, applying heat to cause the slits or apertures to enlarge. The remaining graft material forms the interconnecting webs between the adjacent stent elements.

L'invention concerne un stent (60) qui comprend des éléments de connexion (32) flexibles, de préférence polymères. Selon l'invention, ces éléments connectent des éléments de stent (62) adjacents espacés. De préférence, les éléments de stent adjacents espacés sont le résultat de la formation du stent à partir d'un serpentin enroulé hélicoïdalement qui présente des espaces entre des enroulements adjacents. D'autres formes de stent, telles que de multiples éléments de stent interconnectés ou annulaires espacés individuels, peuvent également être utilisées. Les éléments de connexion sont typiquement en forme de réseau et résultent de la création de fentes ou d'ouvertures dans un revêtement de matériau greffé appliqué sur le stent, puis de l'application de chaleur pour provoquer l'élargissement des fentes ou ouvertures. Le matériau greffé restant forme les réseaux d'interconnexion entre les éléments de stent adjacents.

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