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Filter, particularly for trapping blood clots

  • US 4,688,553 A
  • Filed: 11/14/1985
  • Issued: 08/25/1987
  • Est. Priority Date: 11/29/1984
  • Status: Expired due to Term
First Claim
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1. A filter to be positioned within a blood vessel to trap blood clots, said filter comprising:

  • a plurality of legs arranged to extend from a head in a substantially conical corolla configuration, each of said legs having a free end; and

    at least some of said legs having respective appendices connected thereto in the region of said free ends thereof, each appendix including a portion extending in the general direction of said head;

    whereby said appendices extend substantially parallel with a wall of the vessel when said filter is inserted within the same.

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