Method and apparatus for deploying non-circular stents and graftstent complexes
First Claim
Patent Images
1. A stent having a non circular cross-section when expanded, comprising:
- a tubular wall defining a curved edge and an alignment edge; and
an orientation marker positioned on said tubular wall with a predetermined rotational relationship relative to said alignment edge.
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Accused Products
Abstract
Disclosed is a non-circular stent, as well as a graftstent complex, that may be used for isolating a pathological defect in the vicinity of a branching passageway. Also disclosed is an apparatus for expanding a stent and for aligning same relative to another stent. Further, a method for excluding a pathological defect such as an aortic aneurysm is disclosed.
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Citations
19 Claims
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1. A stent having a non circular cross-section when expanded, comprising:
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a tubular wall defining a curved edge and an alignment edge; and an orientation marker positioned on said tubular wall with a predetermined rotational relationship relative to said alignment edge. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for endoluminally excluding an aortic aneurysm in a patient'"'"'s vascular system, comprising the steps of:
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advancing through each branch of the patient'"'"'s femoral and iliac system a a respective graftstent complex, each graftstent complex comprising a first stent and a graft; aligning said first stents relative to each other in a common region of normal aortic tissue on one side of the aneurysm; and deploying each of said aligned first stents in the common region by applying a circumferentially non-uniform force from within each stent which expands it into a non-circular shape, said expanded stents being generally symmetric to one another, whereby blood in a patient'"'"'s vascular system flows through said respective graftstent complexes and thereby excludes the aneurysm. - View Dependent Claims (8)
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9. A system, comprising:
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a stent; an elongated catheter; and means, connected to the catheter which supports said stent thereabout, for expanding said stent to a non-circular shape in the absence of a force external to said stent.
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10. A system, comprising:
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an elongated catheter defining an inflation lumen therein; and an inflatable balloon affixed to said catheter, said balloon being preshaped to have a generally "D" shaped cross-section when inflated to the deployment size, a stent positioned over said balloon; whereby inflation of said balloon to the deployment size with the stent thereover causes the stent to expand from the delivery size to a non-circular shape. - View Dependent Claims (11, 12)
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13. A graftstent complex for hemostatically bypassing an aneurysm in the vicinity of a branching passageway, comprising:
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a first graft segment defining a first lumen; a first stent attached to said first graft segment; a second graft segment defining a second lumen; a second stent attached to said second graft segment; a plurality of barbs associated with at least a selected one of said first and second stents and extending from the surface of said selected stent to engage said graft attached to the other of said first and second stents. - View Dependent Claims (14)
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15. A graftstent complex, comprising:
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a stent having a non circular cross-section when expanded and including a tubular wall defining in at least the expanded state a curved edge and an alignment edge; a segment of graft material attached to the stent; an alignment marker positioned on said segment of graft material with a predetermined rotational relationship relative to said alignment edge of said stent. - View Dependent Claims (16, 17, 18, 19)
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Specification