Combination Dilator-Embolic Protection Device

A combination dilator-embolic protection device [113] for simultaneously dilating a stenosis in a body vessel and providing protection from embolic debris, the device comprising:

• an elongate shaft component [115] defining a lumen [111] that extends between a proximal end and a distal end thereof;
• an expandable dilator-filtration component [114] having a proximal end [119] attached to the distal end of the elongate shaft portion, the dilator-filtration component having a first filtration segment [116], a second filtration segment [120] and an interior volume, wherein the first filtration segment has at least one opening [118] of a first size that permits passage of embolic debris into the interior volume and the second filtration segment has openings [122] of a second size that is smaller than the first size, such that the second filtration segment retains the embolic debris within the interior volume;
• and
• an inner shaft component [108] slidably extending through the lumen of the elongate shaft component and the interior volume of the dilator-filtration component, the dilator-filtration component having a distal end [117] attached to the inner shaft component proximate a distal end thereof, wherein relative movement between the inner shaft component relative to the elongate shaft component that reduces the distance between the proximal and distal ends of the dilator-filtration component expands the dilator-filtration component into apposition with the stenosis in the body vessel and provides a radial force to dilate the stenosis.