Prosthetic heart valve with retention elements
First Claim
Patent Images
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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Accused Products
Abstract
Described embodiments are directed toward centrally-opening leaflet prosthetic valve devices having a leaflet frame and a leaflet construct. The leaflet construct is at least partially coupled to a leaflet frame outer side of the leaflet frame and being coupled thereto by a retention element.
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Citations
11 Claims
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1. A method of making a prosthetic valve, the method comprising:
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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. - View Dependent Claims (2, 3, 4, 5)
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6. A method of making a prosthetic valve, the method comprising:
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forming a leaflet construct including a plurality of leaflets that are contiguous with one another and are interconnected by a plurality of bridge regions; folding each of the plurality of bridge regions into a plurality of bridge loops; passing each of the plurality of bridge loops through a plurality of post slots in a plurality of commissure posts of a leaflet frame; receiving a plurality of retention elements in the plurality of bridge loops such that each of the plurality of retention elements is abutted against an outer side of the plurality of commissure posts of the leaflet frame; securing the plurality of bridge loops to the plurality of retention elements, the plurality of retention elements to the plurality of commissure posts, and the plurality of bridge loops to the plurality of commissure posts; and folding portions of each of the plurality of leaflets over the leaflet frame to define a plurality of fold-over portions and securing the fold-over portions in a folded configuration to couple the fold-over portions to the leaflet frame. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification