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US 11,129,704 B2Granted
Single layer ePTFE and discrete bio-resorbable rings
AssigneeC. R. Bard, Inc.
InventorJohn D. McDermott
Life of this patent
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Abstract
A stent-graft, including a generally tubular vascular graft of biocompatible material, and a plurality of bio-resorbable discrete annular members spaced apart along a longitudinal axis of the vascular graft and attached thereto.
Claims12
A stent-graft, comprising:
- a tubular expanded polytetrafluoroethylene (ePTFE) vascular graft;
- a plurality of individual annular members capable of being radially expanded by a balloon, wherein the annular members are:
- formed from a bio-resorbable material coated with a polyurethane material;
- and further comprise a layer of amorphous fluoropolymer including tetrafluoroethylene (TEF) and 4,5-difluoro-2,2-bis(trifluoromethyl)-1,3-dioxole with said annular members being,
- positioned in a consecutive adjacent, spaced apart relation over a longitudinal axis of the vascular graft such that adjacent members of the annular members avoid one another upon radial compression of the stent-graft;
- and
- a solvent disposed between the annular members and the vascular graft.
4 more elements
Dependencies are inferred from the claim text.