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Stent for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient

  • US 9,987,133 B2
  • Filed: 07/28/2016
  • Issued: 06/05/2018
  • Est. Priority Date: 02/26/2008
  • Status: Active Grant
First Claim
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1. A stent for implantation at a native heart valve, the stent comprising:

  • an expandable body having a first open end and second open end opposite the first open end, a longitudinal axis of the expandable body extending between the first open end and the second open end; and

    a plurality of positioning arches positioned around an outer perimeter of the expandable body, each positioning arch terminating in an apex facing in a direction toward the first open end of the expandable body,wherein the stent has an implanted configuration when in an implanted position at the native heart valve, the implanted configuration comprising;

    the expandable body being in an expanded configuration and oriented such that the first open end is upstream the second open end relative to a direction of blood flow through the native heart valve,the apex of each of the positioning arches being positioned within a respective one of a plurality of pockets of the native heart valve, the pockets being defined by the native leaflets and a heart structure from which the native leaflets extend, andthe first open end of the expandable body extending past each of the apexes of the positioning arches by a distance such that the first open end of the expandable body is positioned upstream of an annulus of the heart valve and out of contact with nerve bundles of the heart valve.

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