Guided filter with support wire and methods of use

Details Guided filter with support wire and methods of use Guided filter with support wire and methods of use

A - Human Necessities

61

F

A61F 2/01 (2006.01) A61F 2/84 (2006.01)

Patent

CA 2345654

A guided filter system for temporary placement of a filter in an artery or vein is disclosed. The system includes a guidewire slideable through a wire guide included in a distal region of a support wire. The support wire has an expandable filter, which is operable between a collapsed or enlarged condition. A variety of endovascular devices, including angioplasty, atherectomy, and stent-deployment catheters, are insertable over the guidewire and/or the support wire. Methods of using the guided filter system to direct and exchange endovascular devices to a region of interest, and to entrap and remove embolic material from the vessel are also disclosed.

L'invention concerne un système de filtre guidé pour la mise en place temporaire d'un filtre dans une artère ou une veine. Ce système comprend un fil-guide pouvant coulisser à travers un guide compris dans une région distale d'un fil de support. Ce dernier présente un filtre expansible qui passe d'un état replié à un état dilaté. Une grande variété de dispositifs endovasculaires, notamment des cathéters d'angioplastie, d'athérectomie et de déploiement de stent, peuvent être adaptés sur le fil-guide et/ou le fil support. L'invention concerne aussi des procédés d'utilisation du système de filtre guidé pour diriger et échanger les dispositifs endovasculaires vers une région d'intérêt et pour piéger et supprimer la matière embolique du vaisseau.

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