Patent ID: 8500772
Filing Date: 2013-08-06
Classification: A61F

Abstract:
1. A distal protection device for capturing embolic debris, comprising: a shaft; a jacket, said shaft being rotatably received within said jacket; a coiled cone formed of wire having a proximal cone end, a distal cone end, and a cone interior extending between said proximal cone end and distal cone end, wherein said proximal cone end is attached to said jacket, said shaft includes a shaft portion extending coaxially within said cone through said cone interior from said proximal cone end to said distal cone end, wherein a distal end of said shaft portion is attached to said distal cone end, and wherein the wire that forms the coiled cone extends in a number of revolutions around said shaft; and a mesh filtration element constructed separately from said coiled cone and mounted on said cone, with portions of said wire woven through and movable through openings in the mesh filtration element, said shaft being rotatable in a first direction relative to said jacket to increase the number of revolutions of said wire around said shaft and collapse said cone to provide the mesh filtration element in a closed position for capturing embolic debris within said cone, said shaft also being rotatable in a second direction opposite said first direction to decrease the number of revolutions of said wire around said shaft and expand said cone to a condition wherein it tapers from a larger diameter at said proximal cone end to a smaller diameter at said distal cone end to provide the mesh filtration element in an open position, with said wire portions movable through said openings in the mesh filtration element as the shaft is rotated in said first direction and said second direction to collapse and expand said cone, respectively.