Patent ID: 6013093
Filing Date: 2000-01-11
Classification: A61F

Abstract:
A filter sized and constructed to be compressed and passed through the vasculature of a patient to be anchored against an inner wall surface of a blood vessel for capturing blood clots in a blood stream passing therethrough, said filter comprising:an anchoring portion comprising a generally cylindrical self-expanding body formed from resilient material, said generally cylindrical body having proximal and distal ends and defining an axial direction and having a structure of variable diameter that is expandable from a low-profile compressed condition to a larger profile expanded condition, wherein said resilient material urges said generally cylindrical body to radially expand and to thereby apply anchoring radial force against the inner wall surface of the blood vessel; anda filtering portion aligned with said generally cylindrical body, and having an open proximal end supported near the distal end of said anchoring portion, wherein the filtering portion includes elongated strands structured to provide a capture cross-section that prevents large clots from passing therethrouqh.