Devices for retaining vaso-occlussive devices within an...

A - Human Necessities – 61 – F

Patent

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A61F 2/06 (2006.01) A61B 17/12 (2006.01)

Patent

CA 2481224

The present invention is directed to devices for occluding an aneurysm having an aneurysmal neck and an aneurysmal inner wall. Generally, a device in accordance with the present invention includes a mesh-like structure that is integrally composed of a shape-memory alloy such as NiTi. The device is deployed within the aneurysm through the aneurysmal neck. The device is configured to be in a deployed state and an undeployed state, and is configured to transition from the undeployed state to the deployed state by exposure to a higher temperature and/or by being unconstrained. The device may function to retain finer vaso-occlusive devices such as vaso-occlusive coils and/or embolic liquids. Furthermore, the device itself may function as a vaso- occlusive device.

L'invention concerne des dispositifs permettant de fermer un anévrysme présentant un collet anévrismal et une paroi interne anévrismale. Généralement, un dispositif selon l'invention comprend une structure en forme de maille qui est entièrement constituée d'un alliage de mémoire de forme tel qu'un alliage de nickel-titanium. Ce dispositif est déployé à l'intérieur de l'anévrysme par le collet anévrismal. Ce dispositif est configuré de façon à être en état déployé ou en état plié, et de façon à passer de l'état plié à l'état déployé lorsqu'il est exposé à une température plus élevée et/ou lorsqu'il est non contraint. Ce dispositif peut fonctionner de façon à retenir des dispositifs pour l'occlusion vasculaire plus fins tels que des spires pour l'occlusion vasculaire et/ou des liquides pour l'embolisation. En outre, ce dispositif peut, à lui tout seul, fonctionner en tant que dispositif pour l'occlusion vasculaire.

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