US 2022/0023028 A1 · ENDOVASCULAR STENT GRAFT

Abstract

A stent for endovascular repair in a subject having an aortic dissection or aneurysm in the ascending aorta and methods of using the same are described herein. The stent comprises an inner covered stent having an inner lumen and one or more fenestrations, and an expandable outer shell coupled to the inner covered stent to form a fluid-tight chamber surrounding the inner covered stent. The one or more fenestrations provide fluid communication between the inner lumen and the fluid-tight chamber. The method of using the stent comprises deploying the endovascular stent in a constricted configuration in which the inner covered stent has a reduced diameter. The method further comprises expanding the outer shell to conform to the shape of the ascending aorta and cover an intimal tear of the aortic dissection, and moving the inner covered stent from the constricted configuration to an expanded configuration having an enlarged diameter.

Claims22

Dependent claims

A method of stabilizing an aortic dissection defining an intimal tear in an aorta of a patient, the method comprising:

providing an endovascular stent including:
an inner stent comprising a circumferential wall defining a central lumen and one or more radial fenestrations extending through the circumferential wall, each radial fenestration configured to permit passage of blood therethrough;
and
an expandable outer shell having a first end and a second end and forming a liquid-tight seal with the circumferential wall of the inner stent at each of the first end and the second end to define an outer chamber;
and
deploying the endovascular stent into the ascending aorta in a collapsed configuration, whereby the expandable outer shell expands from the collapsed configuration to a deployed configuration responsive to the passage of blood through the one or more radial fenestrations and into the outer chamber, wherein the expandable outer shell applies an outwardly biasing force against the ascending aorta in the deployed configuration.

3 more elements

Dependencies are inferred from the claim text.

Endovascular stent graft

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Endovascular stent graft

Life of this patent

Abstract

Claims22