Endoluminal device having enhanced affixation characteristics
First Claim
1. A self-expanding endoluminal device having a compressed configuration and a self-expanded configuration, the device in the self-expanded configuration comprising a first neck, a bulbous portion defining a convex exterior surface, a second neck, a first shoulder portion located between the first neck and the bulbous portion and defining a concave exterior surface therebetween, and a second shoulder portion located between the second neck and the bulbous portion and defining a concave exterior surface therebetween, the first neck having a first diameter, the bulbous portion having a geometry characterized by a diverging and converging diameter greater than the first diameter, the diverging and converging diameter forming the first and second shoulder portions, respectively, wherein the first neck is configured in a polygonally wound stent architecture to exert a first radial self-expansion force applied to a lumen wall and the bulbous portion is configured in a braided stent architecture to exert a second radial self-expansion force applied to the lumen wall in a shoulder region that is less than the first radial expansion force.
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Accused Products
Abstract
An endoluminal device for affixation to a wall of a body lumen having a neck region defined by a relatively narrow width and a shoulder region that diverges from the neck region to a relatively wider width. The device comprises a bulbous portion having a shoulder portion with a diameter profile that conforms to the shoulder region of the lumen, and a converging diameter portion sized not to conform to the body lumen diameter profile. In some embodiments, a plurality of affixation members in an area of the device that typically extends from a distal end of the device through the shoulder portion. In one embodiment, the device comprises an endograft for repair of an aneurysm, such as an abdominal aortic aneurysm (AAA).
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Citations
29 Claims
- 1. A self-expanding endoluminal device having a compressed configuration and a self-expanded configuration, the device in the self-expanded configuration comprising a first neck, a bulbous portion defining a convex exterior surface, a second neck, a first shoulder portion located between the first neck and the bulbous portion and defining a concave exterior surface therebetween, and a second shoulder portion located between the second neck and the bulbous portion and defining a concave exterior surface therebetween, the first neck having a first diameter, the bulbous portion having a geometry characterized by a diverging and converging diameter greater than the first diameter, the diverging and converging diameter forming the first and second shoulder portions, respectively, wherein the first neck is configured in a polygonally wound stent architecture to exert a first radial self-expansion force applied to a lumen wall and the bulbous portion is configured in a braided stent architecture to exert a second radial self-expansion force applied to the lumen wall in a shoulder region that is less than the first radial expansion force.
- 17. A self-expanding endoluminal device having a compressed configuration and a self-expanded configuration and having a distal end, the device in the self-expanded configuration comprising a distal first neck, a first bulbous portion defining a convex exterior surface, a distal second neck, a first shoulder portion located between the distal first neck and the first bulbous portion and defining a concave exterior surface therebetween, and a second shoulder portion located between the distal second neck and the first bulbous portion and defining a concave exterior surface therebetween, the distal first neck having a first diameter, the first bulbous portion having geometry characterized by a diverging and converging diameter greater than the first diameter, the diverging and converging diameter forming the first and second shoulder portions, respectively, at least the distal first neck and part of the first bulbous portion comprising a plurality of affixation members that project radially outward for affixation to a lumen wall of an abdominal aortic aneurysm, wherein the distal first neck is configured in a polygonally wound stent architecture to exert a first radial self-expansion force applied to the lumen wall and the bulbous portion is configured in a braided stent architecture to exert a second radial self-expansion force applied to the lumen wall in a shoulder region that is less than the first radial expansion force.
Specification