×

Vein filter

  • US 8,864,793 B2
  • Filed: 07/05/2013
  • Issued: 10/21/2014
  • Est. Priority Date: 01/22/2004
  • Status: Active Grant
First Claim
Patent Images

1. A vessel filter comprising a first cranial region terminating at a first end and a second caudal 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 cranial region having a filter portion having a converging region to direct particles toward a center of the filter, the converging region converging into a tubular portion, the second caudal region forming a mounting region and being flared in the expanded position to have a transverse dimension increasing toward a second end portion opposite the filter portion, the second caudal region including a vessel engaging portion at the second end portion, the first region having a retrieval hook and a spacer, wherein in the collapsed position the spacer extends from the tubular portion in a cranial direction cranially beyond the retrieval hook and along an axis substantially parallel to a longitudinal axis of the filter in the collapsed position of the filter, the spacer being a single elongated strut and in the expanded position forms a loop extending radially from the tubular portion, wherein the spacer in the expanded position has a maximum transverse dimension less than a maximum transverse dimension of the filter in the expanded position.

View all claims
  • 15 Assignments
Timeline View
Assignment View
    ×
    ×