Balloon expandable crush-recoverable stent device

Details Balloon expandable crush-recoverable stent device Balloon expandable crush-recoverable stent device

A - Human Necessities

61

F

A61F 2/06 (2006.01)

Patent

CA 2573886

An intraluminal, balloon expandable stent (10) for implantation in a body lumen is disclosed. The present invention provides a lumen support stent with an unobstructed through-lumen for use in a blood vessel. A constraining mechanism (50, 80, 82) is provided for securely maintaining the stent in the collapsed condition during delivery. The stent is preferably formed with a series of interconnected slide and lock mechanisms (40, 60, 62, 66) for permitting movement from a collapsed condition to an expanded condition and inhibiting radial recoil from the expanded condition. The stent may be formed from a shape memory alloy for providing crush-recovery after deployment.

Ce stent expansible de ballon intraluminal (10) est destiné à une implantation dans un lumen. La présente invention fournit un stent de support de lumen avec un passage de lumen non obstrué à utiliser dans un vaisseau sanguin. Un mécanisme de contrainte (50, 80, 82) est fourni pour maintenir le stent en toute sécurité en état replié pendant l'insertion. De préférence, le stent est constitué d'une série de mécanismes de coulisses et de verrous interconnectés (40, 60, 62, 66) pour permettre de passer d'un état replié à un état déplié et d'interdire le recul radial à partir de l'état déplié. Le stent peut être formé à partir d'un alliage à mémoire de forme pour assurer la récupération après écrasement en cas de déploiement.

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