Bowed runners and corresponding valve assemblies for paravalvular leak protection
A prosthetic heart valve for replacing a native valve includes a stent extending between a proximal end and a distal end and including a plurality of struts forming cells, the stent having a collapsed condition and an expanded condition. At least one runner is coupled a cell, the at least one runner being configured to transition from a first configuration to a second configuration when the stent moves from the collapsed condition to the expanded condition, the at least one runner projecting radially outwardly from the cell in the second configuration. A valve assembly is disposed within the stent, the valve assembly including a plurality of leaflets, a cuff at least partially disposed on a luminal surface of the stent, and a covering material disposed on an abluminal surface of the stent and covering the at least one runner in the second configuration.
1. A prosthetic heart valve for replacing a native valve, comprising: a stent extending between a proximal end and a distal end and including a plurality of struts forming cells, the stent having a collapsed condition and an expanded condition; at least one runner coupled to and extending within a cell, the at least one runner being configured to transition from a first configuration to a second configuration when the stent moves from the collapsed condition to the expanded condition, the at least one runner projecting radially outwardly from the cell in the second configuration; and a valve assembly disposed within the stent, the valve assembly including a plurality of leaflets, a cuff at least partially disposed on a luminal surface of the stent, and a covering material disposed on an abluminal surface of the stent and covering the at least one runner in the second configuration, the covering material including at least one individual panel configured to cover one cell of the stent, each of the at least one individual panel being disposed over only one of the at least one runner.
2. The prosthetic heart valve of claim 1 , wherein the at least one runner is substantially linear in the first configuration.
3. The prosthetic heart valve of claim 1 , wherein the at least one runner is bowed or curved in the second configuration.
4. The prosthetic heart valve of claim 1 , wherein the covering material includes at least one diamond-shaped panel disposed over at least one cell, the covering material further including at least one flap integrally formed with the cuff and configured to fold from the luminal surface to the abluminal surface of the stent.
5. The prosthetic heart valve of claim 1 , wherein the stent further includes commissure features, and wherein the at least one runner is coupled to selected cells in a first row of cells proximal of the commissure features.
6. The prosthetic heart valve of claim 1 , wherein the stent further includes commissure features, and wherein the at least one runner is coupled to selected cells in a second row of cells proximal of the commissure features.
7. The prosthetic heart valve of claim 1 , further comprising a plurality of runners coupled to proximal-most struts of the stent and extending proximally of the proximal end of the stent.
8. The prosthetic heart valve of claim 7 , wherein each of the plurality of runners extends from a first end joined to a strut to a free end.
9. The prosthetic heart valve of claim 8 , wherein each free end has a horseshoe shape, the covering material being sutured to the horseshoe shape.
10. A prosthetic heart valve for replacing a native valve, comprising: a stent extending between a proximal end and a distal end and including a plurality of struts forming cells and a plurality of runners, at least one of the plurality of runners extending within one of the cells, the stent having a collapsed condition and an expanded condition, the struts, in the expanded condition of the stent, defining a first diameter and the runners, in the expanded condition of the stent, defining a second diameter, the second diameter being greater than the first diameter; and
a valve assembly disposed within the stent, the valve assembly including a plurality of leaflets, a cuff at least partially disposed on a luminal surface of the stent and a covering material disposed on an abluminal surface of the stent and configured to cover at least one of the cell and at least one of the plurality of runners.