Endovascular guidewire filter and methods of use

Details Endovascular guidewire filter and methods of use Endovascular guidewire filter and methods of use

A - Human Necessities

61

F

A61F 2/01 (2006.01)

Patent

CA 2436707

A filter device for temporary placement of a filter in an artery or vein is disclosed. The devices include (1) an elongate tubular member having a single or double side-wire loop, (2) an elongate member having a filter bonded to a circular rim joined by a plurality of tethers and an independently moveable tether, and (3) an elongate member having a parachute filter joined by a plurality of flexible struts. The filter conforms to the interior of a vessel wall when expanded and contracts to a consistent diameter without bunching when stowed. The filter devices may act as guidewires for guiding a therapeutic catheter to a region of interest within a vessel. Methods of using the filter device to entrap and remove embolic material from a vessel during endovascular procedures are also disclosed.

L'invention concerne un dispositif filtre permettant de placer un filtre dans une artère ou une veine. Le dispositif comprend (1) un élément tubulaire allongé doté d'une boucle à fil latéral simple ou double, (2) un élément allongé ayant un filtre lié à une bordure circulaire fixée par plusieurs attaches et une attache mobile de manière indépendante, (3) un élément allongé ayant un filtre parachute fixé par plusieurs entretoises souples. Le filtre se conforme à l'intérieur de la paroi d'un vaisseau lorsqu'il se dilate et se contracte jusqu'à un diamètre constant sans se tasser lorsqu'il est escamoté. Les dispositifs filtres peuvent servir de fil-guide pour guider un cathéter thérapeutique vers une région d'intérêt à l'intérieur d'un vaisseau. L'invention concerne en outre des procédés d'utilisation du dispositif filtre destinés à piéger et évacuer le matériau embolique d'un vaisseau lors d'opérations endovasculaires.

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