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Stent graft device

  • US 8,690,937 B2
  • Filed: 09/27/2012
  • Issued: 04/08/2014
  • Est. Priority Date: 03/15/2006
  • Status: Active Grant
First Claim
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1. A method of implanting a stent graft device comprising:

  • a) providing a delivery catheter;

    b) mounting said stent graft device onto said catheter, said stent graft device comprising a tubular stent having a first unexpanded diameter when mounted on the delivery catheter and a second expanded diameter once deployed and defining a longitudinal direction and a circumferential direction, the stent comprising a plurality of individual stent segments each having a zigzag shaped pattern formed into a tubular shape with a first open end and a second open end, wherein the first open end has a row of first apexes coming to a point and the second open end has a row of second apexes coming to a point, the apexes in the row of first apexes being aligned in the circumferential direction with one another and the apexes in the row of second apexes being aligned in the circumferential direction with one another but not with the apexes in the row of first apexes; and

    graft material affixed to the stent to create a fluid carrying conduit, the graft material being affixed to the stent by a plurality of sutures that are knotted, the suture knots being stitched to the graft material sufficiently close to the apexes in a staggered pattern relative to the circumferential direction such that each suture knot has an associated apex by virtue of its proximity to the sufficiently close apex, whereas the suture knots associated with circumferentially adjacent apexes in the same row of apexes are not circumferentially aligned, and wherein the circumferentially adjacent suture knots associated with the apexes in the same row do not touch one another when the stent segment is at its first unexpanded diameter;

    c) delivering said stent graft device percutaneously through a patient'"'"'s vasculature to a specific location in a body lumen;

    d) deploying said stent graft device into the body lumen; and

    e) withdrawing said catheter from said patient leaving said stent graft device deployed in the body lumen.

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