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US 2021/0260252 A1Published application
Puncturable and resealable graft
AssigneeW. L. Gore & Associates, Inc.
InventorsEdward H. Cully, Jeffrey B. Duncan, Paul D. Gassler
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AssigneeW. L. Gore & Associates, Inc.
InventorsEdward H. Cully, Jeffrey B. Duncan, Paul D. Gassler
Estimating the term…
Implantable grafts, particularly for arteriovenous access that may be punctured by an object such as a needle and, following removal of the object, will reseal the resulting hole to the extent of reducing fluid leakage through the graft at the puncture site to an amount less than would be typical for a conventional graft. More particularly, the grafts comprise three layers; an inner layer of implantable graft material such as ePTFE, a middle layer of self sealing elastomeric material such as silicone, and an outer layer of implantable graft material such as ePTFE. Following manufacture, the tubular form of the three-layer graft is everted to put substantially the entire wall thickness of the elastomeric material layer under circumferential compression.
An implantable device comprising a tubular structure including a first layer, a second layer, and an elastomeric layer between the first and second layers, an entire thickness of which is under circumferential compression following eversion of the tubular structure, the tubular structure having a first outside diameter prior to eversion, wherein when everted the tubular structure has a second outside diameter that is larger than the first outside diameter, and wherein the tubular structure has a wall thickness and the second outside diameter is larger than the first outside diameter by an amount that is equal to or greater than the wall thickness.
An implantable vascular graft comprising a tubular structure having a first outside diameter wherein, when everted, has a second outside diameter that is larger than the first outside diameter, the tubular structure including inner and outer layers of a graft material and an intermediate layer of an elastomeric material, where substantially the entire thickness of the elastomeric layer is under circumferential compression from the graft material prior to eversion of the implantable tubular vascular graft.
Dependencies are inferred from the claim text.