Vascular filter having articulation region and methods of...

Details Vascular filter having articulation region and methods of... Vascular filter having articulation region and methods of...

A - Human Necessities

61

F

A61F 2/01 (2006.01) A61B 17/22 (2006.01) A61L 31/02 (2006.01) A61L 31/04 (2006.01) A61L 31/18 (2006.01)

Patent

CA 2379414

Apparatus (20) is provided for use in filtering emboli from a vessel (17) such as the ascending aorta, wherein a vascular device comprises a support hoop (24) having an articulation region (26) connected near a distal end (23) of an elongated member, a blood permeable sac (28) affixed to the support hoop so that the support hoop forms a mouth of the blood permeable sac, a guide wire (22), and a delivery sheath. The articulation region comprises a reduced thickness region of the support hoop that prevents kinks from forming in the support hoop when the apparatus is contracted to its delivery state, and curved regions that close the mouth of the sac to prevent material escaping from the sac when the apparatus is collapsed for removal.

L'invention concerne un appareil (20) conçu pour filtrer des emboles à partir d'un vaisseau (17) tel que l'aorte ascendante. Cet appareil comprend un cercle de support (24) doté d'une zone articulée (26) reliée à proximité d'une extrémité distale (23) d'un élément de forme allongée, un sac perméable au sang (28) fixé sur le cercle de support, de manière que ce cercle forme une embouchure du sac, un fil métallique de guidage (22), ainsi qu'une gaine d'apport. La zone articulée comprend une région d'épaisseur réduite du cercle de support, qui empêche le cercle de se couder lorsque le dispositif est contracté pour être introduit, et elle comprend des régions courbes qui ferment l'embouchure du sac, afin d'empêcher les matières piégées de s'échapper du sac lorsque l'appareil est à l'état affaissé pour être retiré du vaisseau.

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