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Prosthetic heart valve with retention elements

  • US 10,342,659 B2
  • Filed: 10/24/2017
  • Issued: 07/09/2019
  • Est. Priority Date: 09/15/2014
  • Status: Active Grant
First Claim
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1. A method of making a prosthetic valve, the method comprising:

  • cutting a leaflet construct from a tube of material such that the leaflet construct includes a plurality of leaflets each separated by a bridge region and having fold-over apertures in fold-over portions of each leaflet and bridge apertures in the bridge region;

    folding each of the bridge regions into a bridge loop, each bridge loop of the plurality of leaflets defining coaptation necks between the bridge loop and two adjacent leaflets of the plurality of leaflets;

    locating a retention element in each of the bridge loops;

    suturing each retention element to the respective bridge loop by passing suture through the bridge apertures and respective retention element apertures that are aligned therewith;

    disposing each coaptation neck in a respective post slot of a leaflet frame that is a tube defining leaflet frame windows and a plurality of commissure posts therebetween, where each of the plurality of commissure posts defines a post slot dimensioned to receive a double thickness of the tube at the bridge region and the leaflet frame has leaflet window frame apertures in the leaflet window frame and post apertures in the commissure posts;

    positioning the retention elements adjacent an outer side of a respective one of the commissure posts and disposing the leaflets in the leaflet frame;

    aligning the retention element apertures with the post apertures;

    suturing each retention element to the respective commissure post passing suture through the retention element apertures and the post apertures that are aligned therewith;

    folding the fold-over portions of each leaflet along a leaflet frame inflow edge and against a leaflet frame outer side aligning the fold-over apertures with the leaflet window frame apertures; and

    suturing each fold-over portion to the respective leaflet window frame passing suture through the fold-over apertures and the leaflet window frame apertures that are aligned therewith.

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