EMBOLIC PROTECTION DEVICE

摘要

An embolic protection device (10)includes a catheter body (14) having a central longitudinal lumen, a guidewire (12) positioned within the central longitudinal lumen, and a graft member (16) that is generally tubular in shape in an undeployed state and generally frustroconical in shape in a deployed state. A plurality of openings (30) are formed in the graft member (16) and a plurality of arm members (18) interconnect a proximal end of the graft member with the catheter body. 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.