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Vena cava filter formed from a sheet

  • US 10,188,496 B2
  • Filed: 04/16/2007
  • Issued: 01/29/2019
  • Est. Priority Date: 05/02/2006
  • Status: Active Grant
First Claim
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1. A blood filter for use in a patient'"'"'s blood vessel having a vessel wall surrounding a vessel lumen, comprising:

  • a) a longitudinally extending filter body including a proximal section extending a first fixed distance from a proximal terminal end of the longitudinal filter body to a first intermediate endpoint, said proximal section having a first cross-sectional area;

    b) a distal section having a distal terminal end and a second cross-sectional area;

    c) a joining section positioned between the proximal and distal sections and having a third cross-sectional area less than both the first and second cross-sectional areas;

    d) said joining section spaced away from each of said terminal ends and extending a fixed second distance;

    e) a first hub on said joining section that is slidable a fixed distance along a length of said joining section and in between said proximal and distal sections while in use in the blood vessel;

    f) a plurality of appendages, each attached to said hub at an inner appendage end portion, each appendage having an outer appendage end portion providing unattached distal-most ends extending radially outward of said hub;

    g) wherein said appendages are bendable in both a proximal and distal direction, thus enabling insertion of said filter body with hub and appendages using either a jugular access site or a femoral access site; and

    h) wherein said filter body, said hub and said appendages are configured to occupy a vessel of a patient.

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