Embolic filtering method and apparatus

Details Embolic filtering method and apparatus Embolic filtering method and apparatus

B - Operations, Transporting

01

D

B01D 69/04 (2006.01)

Patent

CA 2609800

The present invention relates generally to a device and method for preventing the undesired passage of emboli from a venous blood pool to an arterial blood pool. The invention relates especially to a device and method for treating certain cardiac defects, especially patent foramen ovales and other septal defects, through the use of an embolic filtering device capable of instantaneously deterring the passage of emboli from the moment of implantation. The device consists of a frame, and a braided mesh of sufficient dimensions to prevent passage of emboli through the mesh. The device is preferably composed of shape memory allow, such as nitinol, which conforms to the shape and dimension of the defect to be treated.

La présente invention concerne d'une manière générale un dispositif et un procédé permettant d'empêcher un passage indésirable d'embole d'un pool de sang veineux dans un pool de sang artériel. Cette invention concerne en particulier un dispositif et un procédé de traitement de certains défauts cardiaques, en particulier un ovales foramen chez un patient et d'autres défauts septaux via l'utilisation d'un dispositif de filtrage embolique capable de repousser le passage d'embole à partir du moment d'implantation. Ce dispositif est constitué d'un cadre et d'une maille en natte d'une dimension suffisante pour empêcher le passage d'une embole à travers cette maille. Ce dispositif est de préférence composé d'un alliage à mémoire de forme, tel que du nitinol, qui se conforme à la forme et à la dimension du défaut à traiter.

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