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US 2016/0250048 A1Published application
Layered medical appliances and methods
AssigneeMerit Medical Systems, Inc.
InventorsJohn Hall, Wayne Mower, Rachel Simmons, Bart Dolmatch
Life of this patent
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Abstract
Medical appliances may be formed of multilayered constructs. The layers of the constructs may be configured with various physical properties or characteristics. The disposition and arrangement of each layer may be configured to create an overall construct with a combination of the individual properties of the layers. Constructs may be used to create vascular prostheses or other medical devices.
Claims24
A multilayered vascular prosthesis, comprising:
- a serially deposited fiber layer disposed on a luminal surface of the prosthesis;
- a polytetrafluoroethylene (PTFE) layer coupled to the serially deposited fiber layer, the PTFE layer providing at least 80% of the tensile strength, measured in at least one direction, of a construct consisting of the serially deposited fiber layer and the PTFE layer.
A multilayered vascular prosthesis, comprising:
- a serially deposited fiber layer disposed on a luminal surface of the prosthesis;
- an expanded polytetrafluoroethylene (ePTFE) layer coupled to the serially deposited fiber layer, the ePTFE layer having an average pore size of less than 6 microns.
A method of constructing a multilayered vascular prosthesis, the method comprising:
- coupling an expanded polytetrafluoroethylene (ePTFE) layer with an internodal distance (IND) of 6 micron or less to a serially deposited layer, such that the serially deposited layer is disposed on a lumenal surface of the multilayered vascular prosthesis.
Dependencies are inferred from the claim text.