Twin bifurcated stent graft
First Claim
1. A stent graft comprising a tubular body of a biocompatible graft material defining a main lumen therethrough, a bifurcation in the tubular body at one end thereof and a first leg and a second leg extending from the bifurcation, the first leg being a long leg and the second leg being a short leg, the first and second legs having respective first and second lumens therethrough and the first and second lumens being in fluid communication with the main lumen, characterised by the first long leg comprising a side arm with a side arm lumen therethrough and the side arm lumen being in fluid communication with the first leg lumen, whereby the stent graft can be deployed into the vasculature of a patient with the tubular body being in an aorta of the patient, the first leg extending down a common iliac artery, the second leg being directed towards a contralateral common iliac artery and the side arm on the first leg directed to an internal iliac artery of the iliac artery.
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Accused Products
Abstract
A stent graft (40) has a tubular body with a first bifurcation (54) with first and second legs (50, 52) extending from the bifurcation. One of the legs (52) has a further bifurcation (62) to define a side arm. The stent graft can be deployed into the vasculature of a patient with the tubular body being in an aorta of the patient, a first leg extending down an iliac artery, a second leg being directed towards a contralateral iliac artery and the side arm directed to an internal artery of one of the iliac arteries. One of the legs can include a valved aperture to enable the placement of an indwelling catheter therethrough
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Citations
18 Claims
- 1. A stent graft comprising a tubular body of a biocompatible graft material defining a main lumen therethrough, a bifurcation in the tubular body at one end thereof and a first leg and a second leg extending from the bifurcation, the first leg being a long leg and the second leg being a short leg, the first and second legs having respective first and second lumens therethrough and the first and second lumens being in fluid communication with the main lumen, characterised by the first long leg comprising a side arm with a side arm lumen therethrough and the side arm lumen being in fluid communication with the first leg lumen, whereby the stent graft can be deployed into the vasculature of a patient with the tubular body being in an aorta of the patient, the first leg extending down a common iliac artery, the second leg being directed towards a contralateral common iliac artery and the side arm on the first leg directed to an internal iliac artery of the iliac artery.
- 11. A stent graft comprising a tubular body of a biocompatible graft material defining a main lumen therethrough an aperture defining a fenestration in the tubular body and a valve arrangement to prevent fluid flow through the aperture from inside of the leg to outside of the leg.
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18. A stent graft comprising a tubular body of a biocompatible graft material defining a main lumen therethrough, a bifurcation in the tubular body at one end thereof and a first leg and a second leg extending from the bifurcation, the first leg being a long leg and the second leg being a short leg, the first and second legs having respective first and second lumens therethrough and the first and second lumens being in fluid communication with the main lumen, characterised by the first long leg comprising a side arm with a side arm lumen therethrough and the side arm lumen being in fluid communication with the first leg lumen, whereby the stent graft can be deployed into the vasculature of a patient with the tubular body being in an aorta of the patient, the first leg extending down a common iliac artery, the second leg being directed towards a contralateral common iliac artery and the side arm on the first leg directed to an internal iliac artery of the iliac artery, wherein the side arm comprises a tube of corrugated biocompatible graft material and the tube extends part helically around the first leg stent graft and the valve arrangement comprises a sleeve of a biocompatible graft material within the first leg and a self expanding stent within the sleeve, the sleeve being fastened at its proximal end to the first leg proximal of the aperture and the self expanding stent being fastened to the sleeve, whereby the self expanding stent forces the sleeve against the inner surface of the first leg around the aperture to prevent fluid flow through the aperture.
Specification