Removable thrombus filter

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/01 (2006.01)

Patent

CA 2382829

A thrombus filter configured for placement within a blood vessel lumen defined by a blood vessel wall. The thrombus filter includes a body member, and a plurality of wires. Each wire has a joined end and a free end. The joined end of each wire is fixedly attached to the distal portion of the body member. Each wire radiates away from the body member along a generally helical path of expanding diameter. The shape of each wire may be generally described as a spiral, or a helix of expanding diameter. The wires radiate away from the body member to form a generally conical filtering portion which includes a plurality of open cells. The thrombus filter may be removed using minimally invasive methods when such removal becomes desirable. A method of removing the thrombus filter is disclosed.

Cette invention concerne un filtre à thrombus destiné à être implanté dans la lumière d'un vaisseau sanguin. Ce filtre à thrombus comprend un élément principal et une pluralité de fils. Chaque fil comporte un extrémité prisonnière et une extrémité libre. L'extrémité prisonnière est rattachée à la partie distale de l'élément principal. L'ensemble des fils rayonne à partir de l'élément principal selon un trajet de forme généralement hélicoïdale et selon un diamètre grandissant. La forme de chacun des fils peut être qualifiée généralement de spirale, ou hélicoïdale, avec un diamètre croissant. Les fils rayonnent à partir de l'élément principal et forment une partie filtrante généralement conique renfermant une pluralité de cellules ouvertes. Le filtre à thrombus peut être retiré au besoin par des techniques peu invasives. Est également décrite une méthode de dépose du filtre.

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