Vaso-occlusive devices with in-situ stiffening elements

Details Vaso-occlusive devices with in-situ stiffening elements Vaso-occlusive devices with in-situ stiffening elements

A - Human Necessities

61

B

A61B 17/12 (2006.01)

Patent

CA 2543840

Vaso-occlusive devices for occluding a body cavity include an internal element located within a lumen of the device. The internal element may include an active element (214) configured to stiffen the coil in-situ made from a material that can expand to a desired size, thereby inducing a radial stress to the coil to stiffen the occlusive device. Alternatively, the active element is secured to two points on the occlusive device, and is made from a material that contracts, thereby inducing a compression to stiffen the device.

La présente invention a trait à des dispositifs pour occlusion vasculaire permettant l'occlusion d'une cavité corporelle comportant un élément interne disposé dans une lumière du dispositif. L'élément interne peut comporter un élément actif (214) conformé pour le raidissement in situ réalisé en un matériau pouvant se dilater à une taille souhaitée, induisant ainsi une contrainte radiale à la spirale pour le raidissement du dispositif d'occlusion. En variante, l'élément actif est fixé à deux points sur le dispositif d'occlusion, et est réalisé en un matériau qui se contracte, induisant ainsi une compression pour le raidissement du dispositif.

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