Embolic protection device

摘要

An embolic protection device includes a catheter body having a central longitudinal lumen, a guidewire positioned within the central longitudinal lumen, and a graft member that is generally tubular in shape in an undeployed state and generally frustroconical in shape in a deployed state. A plurality of openings are formed in the graft member and a plurality of arm members interconnect a proximal end of the graft member with the catheter body. A distal end of the graft member is connected to the guidewire or the atraumatic tip. The graft member may be fabricated of superelastic materials, plastically deformable materials or self-expanding materials and the plurality of openings are capable of diametric expansion and reduction proportionate to the degree of diametric expansion and reduction of a corresponding transverse cross-sectional region of the graft member when in the deployed state to capture emboli or particulate matter and minimize extrusion of the captured material through the openings in the graft member when the graft member is collapsed.