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Publication Number
US-11826271-B2
Publication Date
2023-11-28
Expiration Date
Abstract
The present invention relates to an intraluminal vascular prosthesis for implantation into a blood vessel, with a stent framework and a prosthesis material secured onto the stent framework, wherein the vascular prosthesis has a hollow-cylindrical body with a lumen passing there through and a circumferentially closed jacket, wherein at least one substantially U-shaped or V-shaped fenestration-cut in the prosthesis material of the vascular prosthesis is provided, which is dimensioned and formed, such, that via the fenestration-cut a flap-like access to the lumen of the vascular prosthesis for at least one side branch branching off from the hollow-cylindrical body can be formed.
Core Innovation
The invention relates to an intraluminal vascular prosthesis configured for implantation into a blood vessel. The vascular prosthesis includes a hollow-cylindrical body with a lumen passing therethrough and a circumferentially closed jacket secured on a stent framework. At least one substantially U-shaped or V-shaped fenestration-cut in the prosthesis material is provided as an outwardly opening flap that opens outwardly away from the lumen of the hollow-cylindrical body.
The outwardly opening flap is dimensioned and formed to receive at least one side branch for access to the lumen of the vascular prosthesis. Fenestration-cuts are dispersed on the vascular prosthesis as separate openings into the lumen, and the vascular prosthesis is configured to be placed in a blood vessel having fewer side vessels than a number of fenestration-cuts on the vascular prosthesis. The flap-like access allows side-branch access while the circumferentially closed jacket remains present.
The arrangement addresses endoleaks and material tearing by keeping flaps closed where no side vessel is present, compared with other fenestration approaches described in the document. The disclosed structure enables larger openings matched to side-branch size and can support additional side branches via opened flaps and/or by an inserted hollow-cylindrical side body formed by a second vascular prosthesis connectable through flap access. Radiopaque markers at fenestration-cut endpoints and/or along the fenestration cuts are also described for positioning.
Claims Coverage
Two independent claims are identified: clm-00001 and clm-00014. Each independent claim centers on outwardly opening U- or V-shaped fenestration-cuts that form flap-like access to the lumen, combined with a hollow-cylindrical body having a circumferentially closed jacket and distributed fenestrations as separate openings for use in blood vessels having fewer side vessels than the number of fenestrations.
Outwardly opening U-shaped or V-shaped fenestration-cut flap for side-branch access
An intraluminal vascular prosthesis with a hollow-cylindrical body with a lumen passing therethrough and a circumferentially closed jacket, where at least one substantially U-shaped or V-shaped fenestration-cut in the prosthesis material is provided as an outwardly opening flap that opens outwardly away from the lumen and is dimensioned and formed to receive at least one side branch for access to the lumen.
Distributed fenestration-cuts as separate openings configured for fewer side vessels than fenestrations
The vascular prosthesis includes fenestration-cuts dispersed on the vascular prosthesis as separate openings into the lumen and is configured to be placed in a blood vessel having fewer side vessels than a number of fenestration-cuts on the vascular prosthesis.
Outwardly opening flaps formed by one or more U-shaped or V-shaped fenestrations
An intraluminal vascular prosthesis with a hollow-cylindrical body with a lumen passing therethrough and a circumferentially closed jacket, where one or more substantially U-shaped or V-shaped fenestrations cut in the prosthesis material provide correspondingly shaped respective outwardly opening flaps that are dimensioned and formed to receive at least one side branch for access to the lumen.
Fenestrations dispersed as separate openings for blood vessel with fewer side vessels than fenestrations
The vascular prosthesis includes fenestrations dispersed on the vascular prosthesis as separate openings into the lumen and is configured to be placed in a blood vessel having fewer side vessels than the number of fenestrations on the vascular prosthesis.
Across both independent claims, the core claimed concept is a stent-framework vascular prosthesis with a hollow-cylindrical, circumferentially closed jacket, using U- or V-shaped fenestration-cuts/fenestrations to form outwardly opening flaps for side-branch access, with fenestrations dispersed as separate openings and configured for implantation in blood vessels that have fewer side vessels than the number of fenestrations.
Stated Advantages
Flaps remain closed where no side vessel is present to reduce endoleaks.
Flap closure reduces material tearing versus lattice/sieve fenestrations.
Allows larger openings matched to side-branch size.
Can support additional side branches via opened flaps and/or an inserted hollow-cylindrical side body.
Documented Applications
Implantation of the intraluminal vascular prosthesis into a blood vessel, including placement in blood vessels having fewer side vessels than the number of fenestration-cuts/fenestrations on the prosthesis.
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