News Column

Patent Issued for Endoluminal Prosthesis Comprising a Valve Replacement and at Least One Fenestration

July 22, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- According to news reporting originating from Alexandria, Virginia, by VerticalNews journalists, a patent by the inventor Roeder, Blayne A. (Lafayette, IN), filed on December 22, 2011, was published online on July 8, 2014.

The assignee for this patent, patent number 8771336, is Cook Medical Technologies LLC (Bloomington, IN).

Reporters obtained the following quote from the background information supplied by the inventors: "The functional vessels of human and animal bodies, such as blood vessels and ducts, occasionally weaken or even rupture. For example, the aortic wall can weaken, resulting in an aneurysm, or it may develop a tear in one of the layers of the aortic wall resulting in an aortic dissection.

"One common surgical intervention for weakened, aneurysmal or ruptured passageways or ducts involves the use of an endoluminal prosthesis to provide some or all of the functionality of the original, healthy passageway or duct and/or preserve any remaining vascular integrity by replacing a length of the existing passageway or duct wall that spans the site of failure or defect. Endoluminal prostheses may be of a unitary construction or may be comprised of multiple prosthetic modules. They also may be a single tubular device or a bifurcated branching device depending on the desired application.

"In many cases, however, the damaged or defected portion of the vasculature may include a branch vessel branching from the main vessel. For example, in the case of the abdominal aorta, there are at least three major branch vessels, including the celiac, mesenteric, and renal arteries, as well as other others, leading to various other body organs. Thus, when the damaged portion of the vessel includes one or more of these branch vessels, some accommodation must be made to ensure that the prosthesis does not block or hinder blood flow through the branch vessel. In many instances, there may in insufficient healthy tissue in the aorta near the branching vessels adequately seal a prosthesis without partially or completely blocking one or more of the branching vessels."

In addition to obtaining background information on this patent, VerticalNews editors also obtained the inventor's summary information for this patent: "An endoluminal prosthesis comprises a graft having a tubular body comprising proximal and distal ends, and a valve replacement disposed between the proximal and distal ends of the graft. At least one stent is coupled to the graft and has a contracted delivery state and an expanded state for maintaining patency within a portion of the graft. At least one fenestration is disposed in a sidewall of the graft at a location distal to the valve replacement.

"In one embodiment, the at least one fenestration is pivotable in any direction away from an axis perpendicular to a longitudinal axis of the prosthesis. There may be a first perimeter having a first diameter and surrounding the at least one fenestration, a band of flexible material attached to and surrounding the first perimeter and having a flexible frame, and a second perimeter attached to and surrounding the band of flexible material and having a second diameter greater than the first perimeter diameter. The band of material has a first diameter substantially the same as the first perimeter diameter and a second diameter substantially the same as the diameter of the second perimeter. The diameter of the band of material decreases in a direction away from the surface of the graft from the second perimeter to the first perimeter.

"In exemplary embodiments, the band of material has a concave or convex orientation relative to the surface of the graft. The band of material may be configured to independently move between an interior surface of the graft and an exterior surface of the graft.

"In one embodiment, first and second fenestrations may be disposed in the graft at locations between about 90 and about 270 degrees apart. A first branch vessel prosthesis may extend between the first fenestration and a right coronary artery in a deployed state, and a second branch vessel prosthesis may extend between the second fenestration and a left coronary artery in the deployed state.

"The valve replacement may comprise an artificial valve having a tricuspid shape. The valve replacement may be located at the proximal end of the graft, and one or more barbs extend radially outward from the proximal end of the graft.

"Other systems, methods, features and advantages of the invention will be, or will become, apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features and advantages be within the scope of the invention, and be encompassed by the following claims."

For more information, see this patent: Roeder, Blayne A.. Endoluminal Prosthesis Comprising a Valve Replacement and at Least One Fenestration. U.S. Patent Number 8771336, filed December 22, 2011, and published online on July 8, 2014. Patent URL:

Keywords for this news article include: Technology.

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Source: Journal of Technology

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