Stent graft with integrated valve device and method
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United States of America Patent
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Jan 13, 2004
Grant Date -
Oct 30, 2003
app pub date -
Apr 26, 2002
filing date -
Apr 26, 2002
priority date (Note) -
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Abstract
A bifurcated endoluminal prosthesis is provided that includes a valve or gate in one of the bifurcated branches. The valve or gate prevents flow of blood through the branch when it is closed and permits the flow of blood when it is open. In one variation, the valve comprises a spring member attached to a graft material substantially impermeable to the flow of blood. The spring member holds the graft material over the opening that forms a lumen in the bifurcated portion. The spring member may be flipped from a closed position in which it is initially deployed, to an open position whereby the graft material forms an opening continuous with lumen in the bifurcated portion permitting the flow of blood therethrough. The invention may be used in bifurcated or branched tubular grafts for endoluminal placement within a body lumen, including blood vessels, and for the treatment of abdominal and other aneurysms.
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