Prosthetic heart valve devices and associated systems and methods
Prosthetic heart valve devices for percutaneous replacement of native heart valves and associated systems and method are disclosed herein. A prosthetic heart valve device configured in accordance with a particular embodiment of the present technology can include an expandable support having an outer surface and configured for placement between leaflets of the native valve. The device can also include a plurality of asymmetrically arranged arms coupled to the expandable support and configured to receive the leaflets of the native valve between the arms and the outer surface. In some embodiments, the arms can include tip portions for engaging a subannular surface of the native valve.
1. A prosthetic heart valve device for treating a native heart valve having a native annulus and native leaflets, comprising:
an expandable frame comprising a first portion having a downstream region and an upstream region and a second portion extending outwardly from the downstream region of the first portion in an upstream direction, wherein the second portion is configured to exert force against the inner surface of the native heart valve leaflets when the frame is in an expanded configuration;
a valve member attached within an interior of the first portion;
and a skirt coupled to the downstream region of the first portion and flaring outwardly in the upstream direction such that an upstream region of the skirt is spaced outwardly from the first portion, wherein the skirt extends around the entire circumference of the second portion.
2. The device claim 1 , wherein the valve member comprises a tri-leaflet assembly configured to allow blood flow in the downstream direction and to block blood flow in the upstream direction.
3. The device of claim 1 , wherein the valve member comprises a bi-leaflet assembly configured to allow blood flow in the downstream direction and to block blood flow in the upstream direction.
4. The device of claim 1 , wherein the first portion of the frame is cylindrical.
5. The device of claim 1 , wherein the second portion of the frame comprises elongated members extending outwardly from the downstream region of the first portion of the frame in an upstream direction.
6. The device of claim 1 , wherein the second portion of the frame has sufficient flexibility to deflect inwardly or outwardly relative to the first portion of the frame to accommodate expansion or distortion of the native heart valve annulus.
7. The device of claim 1 , wherein the skirt extends in an upstream direction on an inner side of the second portion of the frame.
8. The device of claim 1 , wherein the skirt extends in an upstream direction on an outer side of the second portion of the frame.
9. The device of claim 1 , further comprising one or more wires coupled to the skirt to maintain the shape of the skirt.
10. The device of claim 1 , wherein the second portion of the frame is biased outwardly from the first portion of the frame.
11. The device of claim 1 , wherein the frame is expandable from a low-profile configuration for delivery to an expanded configuration for implantation at the native heart valve.
12. The device of claim 1 , wherein the skirt is configured to inhibit blood flow between the prosthetic heart valve device and the native heart valve upon implantation of the prosthetic heart valve device at the native heart valve.
13. The device of claim 1 , wherein the second portion of the frame comprises tissue penetrating elements.
14. The device of claim 1 , wherein the second portion of the frame comprises barbs.
15. The device of claim 1 , wherein at least a portion of the frame comprises a covering.
16. The device of claim 1 , wherein the frame comprises interconnected struts.
17. The device of claim 1 , wherein the frame comprises posts.
18. The device of claim 1 , wherein the first portion of the frame has a circular cross-section.
19. The device of claim 1 , wherein the first portion of the frame has an oval cross-section.
20. The device of claim 1 , wherein the frame is self-expandable.