Patent ID: 7988705

Claim:
An embolism protection device comprising a tube with a lumen, a corewire that extends from the distal end to the proximal end of the tube through the lumen of the tube, and a bundle of at least 50 fibers having a first end and a second end, wherein the first end of the fibers are collectively attached to move with the tube, the second end of the fibers are collectively attached to move with the corewire at a location distal to the distal end of the tube, wherein the device has a first narrow profile configuration with a bundle of fibers being generally aligned and the respective ends of the fiber bundle being generally twisted relative to each other about an axis aligned along the corewire, wherein the device has an extended second configuration with the unattached portion of the fibers flare outward with respect to the first narrow profile configuration to form a three dimensional porous filtration matrix to fill the lumen of a vessel, wherein the transition between the first and second configurations of the device are achieved through longitudinal movement of the corewire relative to the tube, and wherein the device has structure that limits the longitudinal motion of the corewire relative to the tube.