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Esophageal valve

  • US 8,029,557 B2
  • Filed: 06/19/2009
  • Issued: 10/04/2011
  • Est. Priority Date: 06/20/2008
  • Status: Active Grant
First Claim
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1. An esophageal valve comprising a polymeric valve body having an outer support region, at least three valve leaflets, and a main body region extending between the support region and the valve leaflets, the valve having:

  • a normally closed configuration in which the valve is closed;

    an antegrade open configuration in which the valve leaflets are opened in response to an antegrade force to allow flow through the valve;

    a retrograde open configuration in response to a retrograde force which is substantially larger than the antegrade force;

    wherein the valve leaflets have a region of co-aption,wherein;

    (a) the valve body is reinforced at the region of co-aption;

    or(b) wherein the valve body is thickened at the region of co-aption; and

    wherein(c) the region of co-aption extends for an axial length of at least 1 mm.

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