Prosthetic heart valves
Prosthetic heart valves may be delivered to a targeted native heart valve site via one or more delivery catheters. In some embodiments, the prosthetic heart valve includes structural features that securely anchor the prosthetic heart valve to the anatomy at the site of the native heart valve. Such structural features can provide robust migration resistance. In addition, the prosthetic heart valves can include structural features that improve sealing between the prosthetic valve and native valve anatomy to mitigate paravalvular leakage. In particular implementations, the prosthetic heart valves occupy a small delivery profile, thereby facilitating a smaller delivery catheter system for advancement to the heart. Some delivery catheter systems can include a curved inner catheter to facilitate deployment of the prosthetic heart valve to a native tricuspid valve site via a superior vena cava or inferior vena cava.
1. A method of deploying a prosthetic heart valve, the method comprising:
engaging the prosthetic heart valve with anatomical structures of a native tricuspid valve, wherein the prosthetic heart valve comprises:
a main body comprising an inflow end portion and an outflow end portion;
an occluder extending between the inflow end and outflow end portions and comprising valve leaflets attached to the main body in an arrangement that: (i) allows blood flow through the occluder in a direction from the inflow end portion toward the outflow end portion along a central axis of the occluder and (ii) prevents blood flow through the occluder in a direction from the outflow end portion toward the inflow end portion; and
a lateral anterior flap extending from the outflow end portion in a first direction that is transverse to the central axis,
wherein the lateral anterior flap extends into a right ventricular outflow tract (RVOT), and
wherein an edge portion of the lateral anterior flap extends along and abuts against a lateral wall of the RVOT such that there is lateral wall tissue present both superior to and inferior to the edge portion of the lateral anterior flap to provide anchoring.
2. The method of claim 1 , wherein the prosthetic heart valve further comprises a septal anterior flap extending in the first direction.
3. The method of claim 2 , wherein a cross-sectional shape of the lateral anterior flap and the septal anterior flap taken perpendicularly to the first direction is arcuate from an outer edge of the lateral anterior flap to an outer edge of the septal anterior flap.
4. The method of claim 3 , wherein the lateral anterior flap and the septal anterior flap each include frame portions extending from the outer edges of the lateral anterior flap and the septal anterior flap that are arranged at a non-zero angle in relation to the central axis so as to define at least a portion of the arcuate cross-sectional shape.
5. The method of claim 4 , wherein each of the frame portions comprise:
two elongate members extending in the first direction: and
multiple members extending between the two elongate members.