Expandable stent using sliding members

A - Human Necessities – 61 – F

Patent

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A61F 2/06 (2006.01)

Patent

CA 2204771

The present invention provides a lumen support device (10), or stent, used to open or expand a body lumen. The stent (10) incorporates elongated parallel stent components (23) with circumferential members (20), fingers, which weave into paired slots (30) of an adjacent stent component. This weave-like interlocking configuration enables the stent (10) to expand radially without yielding or plastically deforming the material of which the stent is fabricated. The weave-like mechanism allows for uniform, smooth expansion without change in longitudinal dimensions for the complete assembly. Once assembled, the plurality of parallel elongated stent components form a cylindrical configuration.

La présente invention concerne une prothèse endovasculaire ou support (10) utilisée pour ouvrir ou dilater un vaisseau sanguin. La prothèse (10) comprend des composantes parallèles allongées (23) avec des doigts circonférentiels (20) qui viennent s'insérer dans des paires de fentes (30) d'une composante adjacente de la prothèse. Cette insertion avec verrouillage permet d'élargir radialement la prothèse (10) sans que le matériau constituant la prothèse ne cède ou ne subisse de déformation plastique. Le mécanisme d'insertion permet un élargissement progressif sans changement de la dimension longitudinale de l'ensemble. Lorsqu'elles sont assemblés, plusieurs composantes allongées juxtaposées forment un corps cylindrique.

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