A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/82 (2006.01) A61L 31/10 (2006.01) A61F 2/06 (2006.01)
Patent
CA 2318829
Shape memory alloy and elastically self-expanding endoluminal stents which are at least partially encapsulated in a substantially monolithic expanded polytetrafluoroethylene ("ePTFE") covering. An endoluminal stent, which has a reduced diametric dimension for endoluminal delivery and a larger in vivo final diametric diameter, is encapsulated in an ePTFE covering which circumferentially covers both the luminal and abluminal walls along at least a portion of the longitudinal extent of the endoluminal stent. The shape memory endoluminal stent is fabricated from a shape memory alloy which exhibits either shape memory or pseudoelastic properties or from an elastic material having an inherent spring tension.
Stents endoluminaux constitués d'un alliage à mémoire de forme, à auto-expansion élastique, qui sont au moins partiellement encapsulés dans une enveloppe en polytétrafluoroéthylène expansé (PTFEe) sensiblement monolithique. Un stent endoluminal, ayant un diamètre réduit lors de son introduction dans la lumière vasculaire et un diamètre final in vivo plus important, est encapsulé dans une enveloppe en PTFEe, qui recouvre circonférentiellement aussi bien sa paroi luminale que sa paroi abluminale sur au moins une partie de sa longueur. Ce stent endoluminal à mémoire de forme est constitué d'un alliage à mémoire de forme possédant soit une mémoire de forme, soit des propriétés pseudo-élastiques, ou bien d'un matériau élastique possédant une tension de ressort propre.
Banas Christopher E.
Edwin Tarun J.
Mccrea Brendan J.
Bard Peripheral Vascular Inc.
Impra Inc.
Mccarthy Tetrault Llp
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