Prosthetic valve for avoiding obstruction of outflow
A prosthetic mitral valve may be anchored in a native mitral valve. The prosthetic mitral valve preferably has a large anterior prosthetic leaflet that spans the entire width of the native anterior leaflet and the anterior prosthetic leaflet moves away from left ventricular outflow tract during systole to create a clear unobstructed outflow path.
1. A prosthetic heart valve for implantation in a native heart valve of a patient, said prosthetic heart valve comprising:
a radially expandable frame having an expanded configuration, a collapsed configuration, an upstream end, and a downstream end;
a commissure post having a free end and an opposite end coupled to the frame;
an anterior anchoring tab coupled to an anterior portion of the expandable frame adjacent the downstream end,
wherein the anchoring tab extends radially outward from the expandable frame and the anchoring tab is configured to anchor the expandable frame to an anterior portion of the native heart valve, and
wherein the anchoring tab is nested within the commissure post when the expandable frame is in the collapsed configuration; and
a plurality of prosthetic valve leaflets each having a free end and a fixed end,
wherein the fixed end is coupled to the expandable frame, and
wherein the commissure post is coupled to at least one of the prosthetic valve leaflets.
2. The prosthetic valve of claim 1 , wherein the free ends of the plurality of prosthetic valve leaflets have an open configuration and a closed configuration, wherein in the open configuration the free ends are disposed away from one another to allow antegrade flow therepast, and in the closed configuration the free ends are disposed adjacent one another to substantially prevent retrograde flow therepast.
3. The prosthetic valve of claim 1 , wherein the plurality of prosthetic valve leaflets comprise an anterior prosthetic leaflet sized to span a width of a native anterior valve leaflet from a first fibrous trigone to a second fibrous trigone, and
wherein in systole the anterior prosthetic leaflet is configured to deflect away from a left ventricular outflow tract (LVOT) of the native heart to provide a clear unobstructed outflow path.
4. The prosthetic valve of claim 1 , further comprising a second anterior anchoring tab coupled to an anterior portion of the expandable frame adjacent the downstream end, and
wherein second anchoring tab extends radially outward from the expandable frame in the expanded configuration, and the second anchoring tab is configured to anchor the frame to a second anterior portion of the native heart valve.
5. The prosthetic valve of claim 1 , wherein the expandable frame comprises a D-shaped cross-section in the expanded configuration, wherein the anterior portion of the expandable frame is substantially flat to prevent impingement of the anterior portion against the left ventricular outflow tract (LVOT), and a posterior portion of the expandable frame is partially cylindrically shaped to conform with a posterior portion of the native valve.
6. The prosthetic valve of claim 1 , wherein the native valve is a native mitral valve.
7. The prosthetic valve of claim 1 , wherein the anterior anchoring tab comprises a fixed end and a free end, and wherein the fixed end originates from a downstream portion of the commissure post.
8. The prosthetic valve of claim 1 , wherein the anterior anchoring tab originates from a circumferential position on a circumference of the expandable frame, and wherein the commissure post originates from the circumferential position.
9. The prosthetic valve of claim 1 , wherein the commissure post comprises an anchoring element adjacent the free end thereof, the anchoring element configured to engage a delivery system.