Stent delivery system and method of use

A - Human Necessities – 61 – F

Patent

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A61F 2/84 (2006.01) A61F 2/06 (2006.01)

Patent

CA 2319133

A stent delivery system, and methods of use, are provided in which a stent is constrained in a contracted delivery state with binding straps that are electrolytically erodible to deploy the stent. The binding straps are attached to a power source and each have a small electrically uninsulated reduced thickness portion. A second electrode wire is disposed adjacent to the uninsulated areas or separately electrically coupled to an exterior surface of the patient's body. When an electric current is applied, the uninsulated areas of the binding straps are electrolytically eroded and rupture, thereby allowing the stent to at least partially deploy.

Système servant à appliquer un extenseur et procédés de mise en application consistant à contenir l'extenseur dans un état d'application contracté au moyen de bandes de fixation qui s'érodent sous l'effet d'une électrolyse afin de déployer l'extenseur. Ces bandes de fixation sont reliées à une source d'énergie et possèdent chacune une partie faiblement dimensionnée d'épaisseur réduite isolée électriquement. On dispose un deuxième fil d'électrode en position contiguë aux zone non isolées ou présentant un couplage électrique séparé avec une surface extérieure du corps du patient. Quand on applique un courant électrique, les zones non isolées des bandes de fixation subissent une érosion et une rupture sous l'effet de l'électrolyse, ce qui permet à l'extenseur de se déployer au moins partiellement.

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