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US 12,691,672 B2Granted
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.
Claims17
A covered stent, comprising:
- a frame comprising a midbody and a flare zone on opposing ends of the frame;
- and
- a cover coupled to the frame,
- wherein the cover comprises a rotational spun polytetrafluoroethylene (PTFE) material,
- and
- wherein the frame and the cover are configured to promote biocompatibility of the stent.
3 more elements
A covered stent, comprising:
- a frame;
- and
- a cover coupled to the frame,
- wherein the cover comprises a rotational spun PTFE material deposited in the absence of an applied electric field, and
- wherein an inner layer and an outer layer of the cover are each configured to be cell permeable.
2 more elements
Dependencies are inferred from the claim text.