Patent ID: 8500774
Filing Date: 2013-08-06
Classification: A61B,A61F

Abstract:
1. A vessel filter comprising a first distal region terminating at a first end and a second proximal region terminating at a second 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 distal region having a filter portion having a converging region to direct particles toward a center of the filter, the second proximal region being flared in the expanded position to have a transverse dimension increasing toward a second end portion opposite the filter portion, the second proximal region including a vessel engaging portion at the second end portion, the first distal region having a tubular portion and having a retrieval hook and a spacer, wherein in the collapsed position the spacer extends axially in an elongated position distal of the retrieval hook and in the expanded position forms a looped region extending radially from the first distal region and looping around the tubular portion, wherein the looped region is an open loop.