Implantable prosthesis with displaceabe skirt
First Claim
1. An implantable prosthesis comprising:
- at least one radially-expandable tubular body; and
at least one skirt extending from, and at least partially overlapping, said tubular body, said skirt terminating in a peripheral edge that is spaced from a juncture between said skirt and said tubular body, at least portions of said peripheral edge being free and displaceable to a greater diameter than said tubular body.
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Accused Products
Abstract
An implantable prosthesis is provided having a radially-expandable tubular body and at least one skirt extending therefrom. The skirt terminates in a peripheral edge, wherein at least portions of the peripheral edge are free and displaceable to a greater diameter of the tubular body. Thus, with the implantable prosthesis being a stent-graft used to treat an aortic aneurysm (e.g., abdominal aortic aneurysm (“AAA”)), the skirt may be used to inhibit Type I endoleaks upon its selective displacement in response to irregular aortic shaping and/or aneurysm neck expansion. The skirt may actively inhibit Type I endoleaks by forming a physical barrier against flow between the tubular body and the aortic wall. In addition, the skirt may passively inhibit endoleak formation by sufficiently restricting blood flow to allow coagulation and clot formation, which would act as a barrier against endoleakage.
183 Citations
22 Claims
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1. An implantable prosthesis comprising:
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at least one radially-expandable tubular body; and
at least one skirt extending from, and at least partially overlapping, said tubular body, said skirt terminating in a peripheral edge that is spaced from a juncture between said skirt and said tubular body, at least portions of said peripheral edge being free and displaceable to a greater diameter than said tubular body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of treating an aneurysm formed in a blood vessel comprising implanting a prosthesis in the blood vessel to at least partially pass through the aneurysm, said prosthesis including at least one radially-expandable tubular body, and at least one skirt extending from, and at least partially overlapping, said tubular body, said skirt terminating in a peripheral edge that is spaced from a juncture between said skirt and said tubular body, at least portions of said peripheral edge being free and displaceable to a greater diameter than said tubular body.
Specification