| 主权项 |
1. An orifice valve device for attachment to a mitral valve, the device comprising:
an anchoring and manifold assembly coupleable to a delivery catheter, the anchoring and manifold assembly comprising means for anchoring the orifice valve device to the mitral valve or to a fixation device that is attached to the mitral valve, so as to anchor the orifice valve device to the fixation device or mitral valve during use; a peripheral ring anchoring system secured to the anchoring and manifold assembly, the peripheral ring anchoring system including:
at least one expandable anchoring ring that can be expanded within an orifice of the mitral valve so as to surround a perimeter of the orifice;a helical suture helically disposeable about the expandable anchoring ring that secures the expandable ring to leaflet tissue around the perimeter of the orifice of the mitral valve; and a trap door valve hingedly secured to the anchoring and manifold assembly, the peripheral ring anchoring system, or both, the trap door valve including:
a trap door body that selectively seals against the expandable anchoring ring extending around the perimeter of the orifice of the mitral valve during the systole portion of a cardiac cycle, the trap door body selectively unsealing relative to the expandable anchoring ring so as to open the orifice of the mitral valve during the diastole portion of the cardiac cycle. |
