Prosthetic stent graft for treatment of abdominal aortic aneurysm
First Claim
1. A prosthetic stent graft comprising:
- a trunk section having a bifurcated vascular graft having a first inlet and first and second flow channels in fluid communication with first and second outlets, the vascular graft supported by first one or more stent sections;
each of the first and second flow channels having a first taper angle, whereby the respective flow channel decreases in cross-sectional area along its length between a bifurcation point in the trunk section to an outlet of the flow channel;
a leg section having a tubular vascular graft having a second inlet with a deployed diameter at least as large or larger than a deployed diameter of the first or second outlet of the first or second flow channel, respectively, and a third flow channel in fluid communication with a third outlet, the vascular graft supported by second one or more stent sections; and
the leg section having a second taper angle, whereby the third flow channel decreases in cross-sectional area along its length between the second inlet and a location along the length of the leg section.
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Accused Products
Abstract
A prosthetic stent graft including a trunk with a vascular graft bifurcated into two flow channels. The flow channels have a first taper angle, decreasing area along its length between the bifurcation point and an outlet. A leg section of the stent graft includes a tubular vascular graft. An inlet of the leg section has a deployed diameter at least about the same size or larger than a deployed diameter of the outlet of the flow channels. The leg section has its own taper angle, preferably less than or about equal to, and more preferably about equal to the taper angle of the flow channel. The deployed diameter of the leg section inlet is preferably about the same size or larger than the deployed diameter of the flow channels adjacent the bifurcation point of the trunk section, and the deployed diameter of flow channel outlets are preferably about the same size or smaller than the deployed diameter of the leg section at an equal distance from the leg section inlet as the outlet is from bifurcation point. Also provided according to the present invention is a method of in situ stent graft sizing for the treatment of abdominal aortic aneurysm.
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Citations
11 Claims
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1. A prosthetic stent graft comprising:
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a trunk section having a bifurcated vascular graft having a first inlet and first and second flow channels in fluid communication with first and second outlets, the vascular graft supported by first one or more stent sections; each of the first and second flow channels having a first taper angle, whereby the respective flow channel decreases in cross-sectional area along its length between a bifurcation point in the trunk section to an outlet of the flow channel; a leg section having a tubular vascular graft having a second inlet with a deployed diameter at least as large or larger than a deployed diameter of the first or second outlet of the first or second flow channel, respectively, and a third flow channel in fluid communication with a third outlet, the vascular graft supported by second one or more stent sections; and the leg section having a second taper angle, whereby the third flow channel decreases in cross-sectional area along its length between the second inlet and a location along the length of the leg section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of in situ stent graft sizing for the treatment of abdominal aortic aneurysm, the method comprising:
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(a) deploying a trunk section of a stent graft in the abdominal aorta of a patient, the trunk section having a bifurcated vascular graft having a first inlet and first and second flow channels in fluid communication with first and second outlets, the vascular graft supported by first one or more stent sections, each of the first and second flow channels having a first taper angle, whereby the respective flow channel decreases in cross-sectional area along its length between a bifurcation point in the trunk section to an outlet of the flow channel; (b) providing a leg section having a tubular vascular graft having a second inlet with a deployed diameter at least as large or larger than a deployed diameter of the first or second outlet of the first or second flow channel, respectively, and a third flow channel in fluid communication with a third outlet, the vascular graft supported by second one or more stent sections, the leg section having a second taper angle, whereby the third flow channel decreases in cross-sectional area along its length between the inlet of the leg section and a location along the length of the leg section. (c) deploying the leg section while the second inlet is within one of the first or second flow channels and the third outlet extending into the iliac artery. - View Dependent Claims (11)
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Specification