Rotational spun material covered medical appliances and methods of manufacture
AssigneeMerit Medical Systems, Inc.
InventorsJohn William Hall, Zeke Eller, Robert S. Kellar, Rachel Lynn Oberg, Bart Dolmatch, Wayne Mower, Robert J. Radford
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Abstract
A medical appliance or prosthesis may comprise one or more layers of rotational spun nanofibers, including rotational spun polymers. The rotational spun material may comprise layers including layers of polytetrafluoroethylene (PTFE). Rotational spun nanofiber mats of certain porosities may permit tissue ingrowth into or attachment to the prosthesis. Additionally, one or more cuffs may be configured to allow tissue ingrowth to anchor the prosthesis.
Claims26
A medical appliance, comprising:
- a first layer of rotational spun and serially deposited polytetrafluoroethylene (PTFE) fibers deposited in the absence of an electric field;
- a tie layer coupled to the first layer and impervious to cell migration into the tie layer;
- and
- a second layer of PTFE.
A medical appliance, comprising:
- a first layer of rotational spun polymeric fibers;
- a tie layer coupled to the first layer, wherein the tie layer is impervious to cellular migration into the tie layer;
- and
- a second layer of PTFE.
A medical appliance, comprising:
- a first layer of rotational spun PTFE fibers deposited in the absence of an electric field;
- a tie layer of FEP coupled to the first layer and impervious to cell migration into the tie layer;
- and
- a second layer of ePTFE.
A medical appliance, comprising:
- a first layer of serially deposited polytetrafluoroethylene (PTFE) fibers deposited in the absence of an electric field;
- a tie layer comprising FEP, the tie layer coupled to the first layer and impervious to cell migration into the tie layer;
- and
- a second layer of PTFE.
Dependencies are inferred from the claim text.