Apparatus and methods for delivery of multiple distributed...

A - Human Necessities – 61 – F

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A61F 2/84 (2006.01) A61M 25/10 (2006.01) A61F 2/02 (2006.01) A61F 2/06 (2006.01)

Patent

CA 2521671

Delivery catheters and systems are adapted for delivering multiple discreet prostheses in body lumens. An exemplary delivery catheter comprises a sheath, a pusher for moving the prostheses relative to the sheath, and a valve member for selectively retaining the prostheses in the sheath. For balloon expandable stents, an elongated shaft and an expandable member are slidably disposed in the sheath, and the prostheses are positionable on the expandable member for deployment in the body lumen. The valve member allows a selected number of prostheses to be deployed from the sheath while retaining other prostheses within the sheath.

L'invention concerne des systèmes et des cathéters de pose conçus pour mettre en place des prothèses discrètes multiples dans des lumières corporelles. Un mode de réalisation concerne un cathéter de pose comprenant une gaine, un élément d'expulsion servant à déplacer les prothèses par rapport à la gaine, ainsi qu'un élément soupape servant à retenir sélectivement les prothèses dans la gaine. Pour les stents expansibles à ballonnet, une tige allongée et un élément expansible sont disposés de façon coulissante dans la gaine et les prothèses peuvent être positionnées sur l'élément expansible en vue d'être déployées dans la lumière corporelle. L'élément soupape permet de déployer un nombre déterminé de prothèses à partir de la gaine tout en retenant sélectivement d'autres prothèses à l'intérieur de ladite gaine.

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