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Stent graft device for treating abdominal aortic aneurysms

  • US 6,238,432 B1
  • Filed: 08/25/1998
  • Issued: 05/29/2001
  • Est. Priority Date: 08/25/1998
  • Status: Expired due to Fees
First Claim
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1. A stent graft device for deployment within an aorta having a restricted section with an inner diameter and a bifurcation into iliac arteries each having an inner diameter measured at a first location, the inner diameter of said restricted section being smaller than a sum of the iliac inner diameters, the graft comprising a proximal main tubular portion to be retained within an upper portion of the aorta and having a first diameter and two tubular limbs depending from the proximal main tubular portion, each limb having a second diameter and a distal end portion for deployment inside an associated iliac artery against an inner surface of the iliac artery at the first location, the distal end portion defining a third diameter larger than the second diameter, wherein the sum of the two second diameters is less than the inner diameter of said restricted section and each tubular limb comprises a concave transition portion extending from the second diameter to the third diameter.

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