Advanced endovascular graft
First Claim
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1. An endovascular graft comprising:
- a bifurcated graft comprising a main body portion having a proximal open end and an opposed distal portion having first and second bifurcated portions having open ends to define a first distal leg and a second distal leg;
a proximal stent securably disposed at the proximal open end of the main body portion;
wherein the first distal leg has a first longitudinal length and the second distal leg has a second longitudinal length;
wherein the first longitudinal length is different from the second longitudinal length;
wherein the proximal stent comprises at least one barb integrally formed on a portion of the stent; and
wherein the barb has an elevation angle with respect to a longitudinal axis of a strut from which the barb extends of about 10 degrees to about 45 degrees; and
wherein the proximal apices are curved apices having an outer surface with a circular radius of curvature of between about 0.030 inch to about 0.070 inch.
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Abstract
This invention is a system for the treatment of body passageways; in particular, vessels with vascular disease. The system includes an endovascular graft with a low-profile delivery configuration and a deployed configuration in which it conforms to the morphology of the vessel or body passageway to be treated as well as various connector members and stents. The graft is made from an inflatable graft body section and may be bifurcated. One or more inflatable cuffs may be disposed at either end of the graft body section. At least one inflatable channel is disposed between and in fluid communication with the inflatable cuffs.
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Citations
32 Claims
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1. An endovascular graft comprising:
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a bifurcated graft comprising a main body portion having a proximal open end and an opposed distal portion having first and second bifurcated portions having open ends to define a first distal leg and a second distal leg; a proximal stent securably disposed at the proximal open end of the main body portion; wherein the first distal leg has a first longitudinal length and the second distal leg has a second longitudinal length; wherein the first longitudinal length is different from the second longitudinal length; wherein the proximal stent comprises at least one barb integrally formed on a portion of the stent; and wherein the barb has an elevation angle with respect to a longitudinal axis of a strut from which the barb extends of about 10 degrees to about 45 degrees; and
wherein the proximal apices are curved apices having an outer surface with a circular radius of curvature of between about 0.030 inch to about 0.070 inch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17)
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15. An endovascular graft comprising:
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a bifurcated graft comprising a main body portion having a proximal open end and an opposed distal portion having first and second bifurcated portions having open ends to define a first distal leg and a second distal leg; a proximal stent securably disposed at the proximal open end of the main body portion; wherein the first distal leg has a first longitudinal length and the second distal leg has a second longitudinal length; wherein the first longitudinal length is different from the second longitudinal length; wherein the proximal stent comprises at least one barb integrally formed on a portion of the stent; wherein the proximal stent comprises a serpentine configuration having a plurality of struts and having a plurality of proximal and distal apices; wherein the at least one integrally formed barb is formed as an extension of at least one of the plurality of struts and extending outwardly from a position on said at least one of the plurality of struts; and wherein the proximal apices have an inner surface with a circular radius of curvature of between about 0.005 inch to about 0.020 inch.
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18. A system for the endovascular treatment of body passageways comprising:
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a bifurcated graft comprising a main body portion having a proximal open end and an opposed distal portion having first and second bifurcated portions having open ends to define a first distal leg and a second distal leg; a proximal stent securably disposed at the proximal open end of the main body portion; wherein the first distal leg has a first longitudinal length and the second distal leg has a second longitudinal length; wherein the first longitudinal length is different from the second longitudinal length; wherein the proximal stent comprises a plurality of struts connected by curved proximal and distal apices and having a barb on each strut, each strut and each barb comprising a barb/strut interface in which there is no mechanical connection in the form of a welded or bronzed joint to join the barb to the strut; wherein each barb has an elevation angle with respect to a longitudinal axis of a strut from which each barb extends of about 10 degrees to about 45 degrees; and wherein the curved proximal apices having have outer surface with a circular radius of curvature of between about 0.030 inch to about 0.070 inch. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32)
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30. A system for the endovascular treatment of body passageways comprising:
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a bifurcated graft comprising a main body portion having a proximal open end and an opposed distal portion having first and second bifurcated portions having open ends to define a first distal leg and a second distal leg; a proximal stent securably disposed at the proximal open end of the main body portion; wherein the first distal leg has a first longitudinal length and the second distal leg has a second longitudinal length; wherein the first longitudinal length is different from the second longitudinal length; and wherein the proximal stent comprises a plurality of struts connected by curved proximal and distal apices and having a barb on each strut, each strut and each barb comprising a barb/strut interface in which there is no mechanical connection in the form of a welded or bronzed joint to join the barb to the strut; and wherein the proximal apices have an inner surface with a circular radius of curvature of between about 0.005 inch to about 0.020 inch.
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Specification