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Blood clot filtering

DC
  • US 5,709,704 A
  • Filed: 11/30/1994
  • Issued: 01/20/1998
  • Est. Priority Date: 11/30/1994
  • Status: Expired due to Term
First Claim
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1. 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 comprisingan 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 size diameter 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 generally conical filtering portion, axially aligned with said generally cylindrical body having an open proximal end coupled near the distal end of said anchoring portion and having an apical distal end.

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