Expandable intravascular tubular stents

Details Expandable intravascular tubular stents Expandable intravascular tubular stents

A - Human Necessities

61

F

A61F 2/06 (2006.01)

Patent

CA 2358449

An expandable intravascular medical tubular stent (140) is a supporting device intended to maintain the walls of anatomical body channels or vessels, the stent being expandable within the vessel by an angioplasty balloon associated with a catheter thereby dilating and expanding the lumen of a vessel. The stent (140) comprises an arrangement of a plurality of radially expandable, serpentine members (16) arranged in interconnected rings. Upon inflation of the balloon, the stent expands in both radial and longitudinal directions in relation to the amount of radially-outwardly directed force by the balloon. The stent is designed such that during expansion, the longitudinal length of the stent is not substantially affected.

Un extenseur médical intravasculaire tubulaire expansible (140) est un dispositif de soutien destiné à maintenir les parois d'un canal anatomique ou de vaisseaux, et expansible à l'intérieur du vaisseau au moyen d'un ballonnet d'angioplastie associé à un cathéter, dilatant et élargissant la lumière d'un vaisseau. Ledit extenseur (140) comporte un ensemble d'éléments en serpentin (16), expansibles radialement, disposés en anneaux reliés entre eux. Lorsqu'on gonfle le ballonnet, l'extenseur se déploie dans les sens radial et longitudinal, selon la force dirigée vers l'extérieur et radialement, induite par le ballonnet. Ledit extenseur est conçu pour que, lors de son déploiement, sa longueur longitudinale ne soit pas sensiblement modifiée.

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