The assignee for this patent, patent number 8795349, is
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 inventors' summary information for this patent: "The present disclosure relates to an endoluminal prosthesis, such as a stent graft that includes one or more fenestrations to accommodate endovascular disease, such as an aneurysm in cases where one or more side branches is involved. In one aspect, the prosthesis includes fenestrations that are pivotable to accommodate the dynamic geometry of the aortic branches. The use of pivotable fenestrations also allows the design of a family of standard stent grafts for 'off-the-shelf' use to accommodate a majority of aneurysm cases involving side branches and reducing the need for customization in many cases.
"In one aspect, a prosthesis includes one or more pivotable fenestrations that accommodate the variability associated with patient anatomy, both statically and dynamically. For example, one or more pivotable fenestrations provided on a prosthesis may lie outside the surface plane of the body of the prosthesis and will allow a branch vessel stent, graft or stent-graft that has been placed in the fenestration to pivot into any orientation required to meet and seal the branch vessel device in the branch vessel.
"The pivotable fenestrations may include an inner perimeter surrounding the fenestration (the hole) in the graft, a band of material surrounding the inner perimeter and extending radially outwardly of the surface plane of prosthesis, and an outer perimeter surrounding the band of material where the band joins the surface of the prosthesis. The band of material extending from the surface of the prosthesis is sufficiently flexible to permit the fenestration to move such that a branch stent disposed in the fenestration may be oriented upwardly, downwardly, laterally, diagonally and the like. In addition, the fenestration may be oriented inwardly or outwardly of the surface of the prosthesis. Hence, a device of a, single geometry may accommodate a variety of patient anatomies.
"The band of material may further include a flexible frame. The flexible frame may include a plurality of support units radiating from the inner perimeter surrounding the fenestration to the outer perimeter surrounding the band. The flexible frame supports the band of material in an outwardly or inwardly extended configuration, depending on whether the fenestration lies within the lumen of the prosthesis or extends away from the surface of the prosthesis.
"The foregoing paragraphs have been provided by way of general introduction, and are not intended to limit the scope of the following claims. The presently preferred embodiments, together with further advantages, will be best understood by reference to the following detailed description taken in conjunction with the accompanying drawings
BRIEF DESCRIPTION OF SEVERAL VIEWS OF THE DRAWINGS
"FIG. 1 shows a perspective view of a fenestrated prosthesis having pivotable fenestrations concave (internal) pivotable fenestrations.
"FIG. 2 is a partial and internal view of the prosthesis of FIG. 1.
"FIG. 3 shows a perspective view of a fenestrated prosthesis having pivotable fenestrations convex (external) pivotable fenestrations.
"FIG. 4 is a partial and internal view of the prosthesis of FIG. 3.
"FIG. 5 shows another fenestrated prosthesis having pivotable fenestrations concave (internal) pivotable fenestrations.
"FIG. 6 is an enlarged perspective view of the pivotable fenestration shown FIG. 5.
"FIG. 7 shows a fenestrated prosthesis having imageable markers and reinforcement frames.
"FIG. 8 is another partial and internal view of an internal pivotable fenestration.
"FIG. 9 is a partial, cross-sectional view of a portion of a prosthesis having a pivotable fenestration.
"FIG. 10 shows an interior view of a pivotable fenestration where the fenestration is disposed within the lumen of the prosthesis.
"FIG. 11 shows an exterior view of a pivotable fenestration where the fenestration is disposed within the lumen of the prosthesis.
"FIG. 12 is a prosthesis having a protrusion of graft material to form a fenestration and an extension.
"FIG. 13 is a fenestrated prosthesis that has been deployed within a diseased vessel, such as the aorta, where branch vessel prostheses are deployed within the branch vessels.
"FIG. 14 shows a branch vessel prosthesis deployed in a secondary branch vessel, where the branch vessel prosthesis is deployed in a right branch vessel positioned lower than its corresponding left branch vessel.
"FIG. 15 shows a branch vessel prosthesis deployed in a secondary branch vessel, where the branch vessel prosthesis is deployed in a right branch vessel positioned higher than its corresponding left branch vessel."
For more information, see this patent: Huser, Matthew S.; Roeder, Blayne A.; Hartley, David E.. Prosthesis Having Pivoting Fenestration. U.S. Patent Number 8795349, filed
Keywords for this news article include: Technology.
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