Patent ID: 8211140
Filing Date: 2012-07-03
Classification: A61F

Abstract:
1. A vessel filter comprising a first region and a second region and a midpoint defined on a longitudinal axis of the filter and defined as a point equidistant from a proximalmost end of the filter and a distalmost end of the filter, the filter movable between a collapsed position for delivery to a vessel and an expanded position for placement within the vessel, the first region having a filter portion having a converging region at a first end portion to direct particles toward a center of the filter, the first region including a plurality of struts extending longitudinally through the first region and being unconnected proximal of the midpoint such that the struts are unconnected between the converging region and the midpoint, the second region being flared in the expanded position to have a transverse dimension increasing toward a second end portion opposite the first end portion, the second region including a vessel engaging portion at the second end portion and including a plurality of spaced apart struts with adjacent struts being joined distal of the midpoint, the adjacent struts joined at a terminal end of the second end portion to thereby join a distal end of the struts, wherein the struts in the second region distal of the center divide widthwise at an end portion to form two connecting struts which extend away from each other, each connecting strut extending toward a connecting strut of an adjacent strut, and vessel engaging hooks at the terminal end of the second end portion to secure the filter within the vessel.