Prosthetic valve with aligned inner and outer frames
Prosthetic heart valves and methods of use of prosthetic heart valves may be provided. In one implementation, a prosthetic heart valve configured to transition between radially compressed and radially expanded configurations may be provided. The prosthetic heart valve may include an outer frame, an inner frame, and at least one tissue anchor extending from at least one of the frames. The prosthetic heart valve may be configured to maintain a first distance between the downstream ends of the inner and outer frames when the prosthetic heart valve is in the radially compressed configuration and a second distance between the downstream ends of the inner and outer frames when the prosthetic heart valve is in the radially expanded configuration, the first distance being greater than the second distance.
1. A prosthetic heart valve configured to transition between a radially compressed configuration and a radially expanded configuration, the prosthetic heart valve comprising:
an annular outer frame having a lumen extending between an upstream end of the outer frame and a downstream end of the outer frame;
an inner frame situated at least partially within the lumen of the annular outer frame, the inner frame having an upstream end and a downstream end; and
at least one tissue anchor configured to extend radially outward from at least one of the annular outer frame or the inner frame, wherein
the prosthetic heart valve is configured to maintain a first distance between the downstream ends of the annular outer frame and inner frame when the prosthetic heart valve is in the radially compressed configuration and a second distance between the downstream ends of the annular outer frame and inner frame when the prosthetic heart valve is in the radially expanded configuration, the first distance being greater than the second distance.
2. The prosthetic heart valve of claim 1 , further comprising:
at least one connector configured to secure the annular outer frame to the inner frame, the at least one connector being spaced apart from at least one of the downstream end of the annular outer frame or the downstream end of the inner frame.
3. The prosthetic heart valve of claim 2 , wherein the at least one connector comprises a plurality of connectors that are spaced apart with respect to a circumference of the prosthetic heart valve.
4. The prosthetic heart valve of claim 2 , wherein the at least one connector is configured to secure the annular outer frame and inner frame against relative axial movement and comprises at least one of:
a mechanical connector extending between the annular outer frame and the inner frame, solder, or a weld.
5. The prosthetic heart valve of claim 2 , wherein the at least one connector is situated:
between the at least one tissue anchor and the downstream ends of the annular outer frame and inner frame, and
at the same circumferential position around the prosthetic heart valve as the at least one tissue anchor.
6. The prosthetic heart valve of claim 2 , wherein expansion of the prosthetic heart valve decreases a distance between the at least one connector and the at least one tissue anchor.
7. The prosthetic heart valve of claim 1 , wherein each of the annular outer frame and inner frame includes a plurality of struts intersecting at junctions to form closed cells, the annular outer frame having closed cells of a first shape and the inner frame having closed cells of a second shape different than the first shape.
8. The prosthetic heart valve of claim 1 , further comprising:
a plurality of ventricular tissue anchors extending from the annular outer frame; and
a plurality of atrial tissue anchors extending from the inner frame.
9. The prosthetic heart valve of claim 1 , wherein an axial length of the inner frame is greater than an axial length of the annular outer frame.
10. The prosthetic heart valve of claim 9 , wherein the inner frame is configured to extend beyond the downstream end of the annular outer frame in a downstream direction and beyond the upstream end of the annular outer frame in an upstream direction.
11. The prosthetic heart valve of claim 1 , wherein a distance between the upstream end of the annular outer frame and the upstream end of the inner frame is greater than at least one of the first distance or second distance between the downstream ends of the annular outer frame and inner frame.
12. A prosthetic heart valve configured to transition between a radially compressed configuration and a radially expanded configuration, the prosthetic heart valve comprising:
an annular outer frame having a lumen extending between an upstream end of the outer frame and a downstream end of the outer frame;
an inner frame situated at least partially within the lumen of the annular outer frame, the inner frame having an upstream end and a downstream end; and
at least one tissue anchor configured to extend radially outward from at least one of the annular outer frame or the inner frame, wherein
the prosthetic heart valve is configured to maintain a first distance between the upstream ends of the annular outer frame and inner frame when the prosthetic heart valve is in the radially compressed configuration and a second distance between the upstream ends of the annular outer frame and inner frame when the prosthetic heart valve is in the radially expanded configuration, the first distance being greater than the second distance.
13. The prosthetic heart valve of claim 12 , wherein the annular outer frame includes a frame body formed from a plurality of struts intersecting at junctions to form frame body cells, the at least one tissue anchor extending from a junction of the frame body, wherein an upstream end of the frame body forms the upstream end of the annular outer frame.
14. The prosthetic heart valve of claim 12 , wherein the inner frame includes a frame body formed from a plurality of struts intersecting at junctions to form frame body cells, the at least one tissue anchor extending from a junction of the frame body, wherein an upstream end of the frame body forms the upstream end of the inner frame.
15. The prosthetic heart valve of claim 12 , further comprising:
at least one connector configured to secure the annular outer frame and inner frame against relative axial movement, the at least one connector being spaced apart from at least one of the downstream end of the annular outer frame or the downstream end of the inner frame.
16. The prosthetic heart valve of claim 15 , wherein the at least one connector is situated:
between the at least one tissue anchor and the downstream ends of the annular outer frame and inner frame, and
at the same circumferential position around the prosthetic heart valve as the at least one tissue anchor.
17. The prosthetic heart valve of claim 15 , wherein expansion of the prosthetic heart valve decreases a distance between the at least one connector and the at least one tissue anchor.
18. The prosthetic heart valve of claim 12 , wherein each of the annular outer frame and inner frame includes a plurality of struts intersecting at junctions to form closed cells, the annular outer frame having closed cells of a first shape and the inner frame having closed cells of a second shape different than the first shape.
19. The prosthetic heart valve of claim 12 , wherein the plurality of tissue anchors comprises:
a plurality of ventricular tissue anchors extending from the annular outer frame; and
a plurality of atrial tissue anchors extending from the inner frame.
20. The prosthetic heart valve of claim 12 , wherein an axial length of the inner frame is greater than an axial length of the annular outer frame.