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Coherent single layer high strength synthetic polymer composites for prosthetic valves

  • US 9,801,712 B2
  • Filed: 02/13/2015
  • Issued: 10/31/2017
  • Est. Priority Date: 04/01/2011
  • Status: Active Grant
First Claim
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1. A prosthetic valve comprising:

  • a frame; and

    a leaflet coupled to the frame and movable between open and closed positions, the leaflet including at least one coherent single layer and an elastomer, each coherent single layer having pores and is a synthetic polymer, the elastomer present in the pores such that each coherent single layer is impermeable, wherein the at least one coherent single layer is a single ply of porous synthetic polymer membrane, wherein the at least one coherent single layer comprises fibers that define space therebetween, wherein a diameter of a majority of the fibers is less than 1.0 μ

    m, the space between the fibers defining the pores that have a pore size that is less than about 5 μ

    m, wherein the leaflet has a tensile strength in at least two orthogonal directions greater than about 35 MPa.

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