Prosthetic device including electrostatically spun fibrous layer and method for making the same
First Claim
1. A composite structure comprising a tubular frame and comprising a tubular polymeric inner surface and a tubular polymeric outer surface, wherein at least one of the tubular polymeric inner surface and tubular polymeric outer surface comprises a plurality of electrospun poly(tetrafluoroethylene) (PTFE) nanofibers, and wherein the PTFE nanofibers have a density such that there is a range of distances of about 0.1μ
- to about 50μ
between points of contact of the nanofibers.
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Abstract
In accordance with certain embodiments of the present disclosure, a process of forming a prosthetic device is provided. The process includes forming a dispersion of polymeric nanofibers, a fiberizing polymer, and a solvent, the dispersion having a viscosity of at least about 50,000 cPs. A tubular frame is positioned over a tubular polymeric structure. Nanofibers from the dispersion are electrospun onto the tubular frame to form a prosthetic device. The prosthetic device is heated.
235 Citations
37 Claims
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1. A composite structure comprising a tubular frame and comprising a tubular polymeric inner surface and a tubular polymeric outer surface, wherein at least one of the tubular polymeric inner surface and tubular polymeric outer surface comprises a plurality of electrospun poly(tetrafluoroethylene) (PTFE) nanofibers, and wherein the PTFE nanofibers have a density such that there is a range of distances of about 0.1μ
- to about 50μ
between points of contact of the nanofibers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- to about 50μ
-
21. A composite structure comprising a tubular frame and comprising at least three tubular polymeric layers associated therewith, wherein one tubular polymeric layer is positioned to form the inner surface of the composite structure and one tubular polymeric layer is positioned to form the outer surface of the composite structure, wherein at least one of the three tubular polymeric layers comprises a plurality of electrospun poly(tetrafluoroethylene) (PTFE) nanofibers, and wherein the nanofibers have a density such that there is a range of distances of about 0.1μ
- to about 50μ
between points of contact of the nanofibers. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
- to about 50μ
Specification