Transcatheter Pulmonary Ball Valve Assembly
A heart valve assembly has a frame comprising an anchoring section, a generally cylindrical leaflet support section, and a neck section that transitions between the anchoring section and the valve support section. The anchoring section has a ball-shaped configuration defined by a plurality of wires that extend from the leaflet support section, with each wire extending radially outwardly to a vertex area where the diameter of the anchoring section is at its greatest, and then extending radially inwardly to a hub. A plurality of leaflets are stitched to the leaflet support section. The heart valve assembly is delivered to the location of a native pulmonary trunk, the vertex area of the anchoring section is deployed into the native pulmonary arteries such that the vertex area is retained in the pulmonary arteries, and then the leaflet support section is deployed in the pulmonary trunk.
1 . A heart valve assembly, comprising:
a frame comprising an anchoring section, a generally cylindrical leaflet support section, and a neck section that transitions between the anchoring section and the valve support section, the anchoring section having a ball-shaped configuration defined by a plurality of wires that extend from the leaflet support section, with each wire extending radially outwardly to a vertex area where the diameter of the anchoring section is at its greatest, and then extending radially inwardly to a hub; and
a leaflet assembly having a plurality of leaflets that are stitched to the leaflet support section.
2 . The assembly of claim 1 , wherein the leaflet support section has an inflow end that is configured with an annular zig-zag arrangement that defines peaks and valleys.
3 . The assembly of claim 2 , wherein the leaflet support section includes a plurality of ears that are provided at its inflow end.
4 . The assembly of claim 1 , wherein all portions of the anchoring section have a wider diameter than any portion of the neck section and the leaflet support section.
5 . The assembly of claim 1 , wherein the anchoring section, the neck section and the leaflet support section are all provided in a single piece.
6 . The assembly of claim 1 , wherein the plurality of leaflets comprises three or four leaflets.
7 . The assembly of claim 1 , further including a plurality of skirts connected to the anchoring section and the leaflet support section.
8 . A method for securing a heart valve assembly in the pulmonary trunk of a human heart, comprising the steps of:
providing a heart valve assembly comprising:
a frame comprising an anchoring section, a generally cylindrical leaflet support section, and a neck section that transitions between the anchoring section and the valve support section, the anchoring section having a ball-shaped configuration defined by a plurality of wires that extend from the leaflet support section, with each wire extending radially outwardly to a vertex area where the diameter of the anchoring section is at its greatest, and then extending radially inwardly to a hub; and
a leaflet assembly having a plurality of leaflets that are stitched to the leaflet support section;
delivering the heart valve assembly to the location of a native pulmonary trunk;
deploying the vertex area of the anchoring section into the native pulmonary arteries such that the vertex area is retained in the pulmonary arteries; and
deploying the leaflet support section in the pulmonary trunk.