Articulated commissure valve stents and methods
A frame for a prosthetic valve includes pivoting struts and outer bow struts. A first end of each pivoting strut is pivotably coupled to a first pivoting strut, a second end of each pivoting strut is pivotably coupled to a second pivoting strut, and an intermediate portion of each pivoting strut, which is disposed between the first end and the second end, is pivotably coupled to a third pivoting strut. The outer bow struts are disposed outwardly from the pivoting struts. An inflow end of each outer bow strut is connected to the first end of a respective pivoting strut, and an outflow end of each outer bow strut is connected to the second end of a respective pivoting strut. The outer bow struts deflect outwardly relative to the intermediate portions of the pivoting struts when the frame is moved from a radially compressed configuration to a radially expanded configuration.
1. A prosthetic heart valve comprising:
a frame movable between a radially compressed configuration and a radially expanded configuration, wherein the frame comprises:
a first end section;
a second end section;
a plurality of inner struts extending from the first end section to the second end section;
a plurality of outer struts disposed radially outwardly from the plurality of inner struts, wherein a first end portion of each outer strut of the plurality of outer struts is pivotably connected to a first end portion of a respective inner strut of the plurality of inner struts, wherein a second end portion of each outer strut of the plurality of outer struts is pivotably connected to a second end portion of a different inner strut of the plurality of inner struts, and wherein an intermediate portion of each outer strut of the plurality of outer struts is pivotably connected to an intermediate portion of yet another inner strut of the plurality of inner struts; and
a plurality of inner bow struts disposed radially inwardly from the plurality of inner struts, wherein a first end portion of each inner bow strut of the plurality of inner bow struts is connected to the first end portion of a respective inner strut of the plurality of inner struts, wherein a second end portion of each inner bow strut of the plurality of bow struts is connected to the second end portion of a respective inner strut of the plurality of inner struts, and wherein the plurality of inner bow struts are spaced radially inwardly away from the intermediate portions of the plurality of inner struts when the frame is in the radially expanded configuration
a plurality of outer bow struts disposed radially outward from the plurality of outer struts, wherein a first end portion of each outer bow strut of the plurality of outer bow struts is connected to the first end portion of a respective outer strut of the plurality of outer struts, wherein a second end portion of each outer bow strut of the plurality of outer bow struts is connected to the second end portion of a respective outer strut of the plurality of outer struts, and wherein the plurality of bow struts are spaced radially outward away from the intermediate portions of the plurality of outer struts when the frame is in the radially expanded configuration.
2. The prosthetic heart valve of claim 1 , wherein the plurality of inner bow struts contact the intermediate portions of the plurality of inner struts when the frame is in the radially compressed configuration.
3. The prosthetic heart valve of claim 1 , further comprising a seal disposed radially between the plurality of inner struts and the plurality of bow struts.
4. The prosthetic heart valve of claim 1 , further comprising a skirt disposed radially between the plurality of inner struts and the plurality of bow struts.
5. The prosthetic heart valve of claim 1 , wherein the plurality of inner struts and the plurality of outer struts are pivotably connected via rivets.
6. The prosthetic heart valve of claim 1 , wherein the plurality of inner struts and the plurality of outer struts are pivotably connected via capped pins.
7. The prosthetic heart valve of claim 1 , further comprises a plurality of leaflets disposed within and connected to the frame.
8. The prosthetic heart valve of claim 1 , wherein the plurality of bow struts is pivotably connected to the plurality of inner struts.