Inverted embolic protection filter

Details Inverted embolic protection filter Inverted embolic protection filter

A - Human Necessities

61

F

A61F 2/01 (2006.01)

Patent

CA 2484867

An embolic protection filter (10) having an inverted membrane (44) with improved blood perfusion characteristics is disclosed. An embolic protection filter in accordance with the present invention comprises a filter frame disposable about a guidewire (14), a support hoop (26) coupled to a plurality of expandable struts, and an inverted membrane for filtering embolic debris. The inverted membrane has a tapered proximal section and an enlarged diameter distal section. Features of the present invention permit the perfusion of blood through the filter irrespective of embolic debris entrained therein.

L'invention concerne un filtre de protection contre l'embolie, présentant une membrane inversée à caractéristiques de perfusion sanguine améliorées. Un filtre de protection contre l'embolie selon la présente invention comprend une armature à disposer autour d'un fil-guide, un cercle support relié à une pluralité d'entretoises extensibles et une membrane inversée destinée à filtrer des débris emboliques. Cette membrane inversée présente une section proximale conique et une section distale de diamètre supérieur. Grâce à ses caractéristiques, la présente invention permet la perfusion de sang à travers le filtre indépendamment des débris emboliques entraînés.

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