Prosthetic mitral valve
First Claim
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1. A prosthetic mitral valve comprising:
- an inflow end, an outflow end, and a central flow axis extending from the inflow end to the outflow end;
a cloth-covered ring disposed at the inflow end of the prosthetic mitral valve, the ring comprising a plurality of cells, the ring configured for positioning on an atrial side of the native mitral valve annulus and for holding the prosthetic mitral valve in place;
a compressible and expandable base extending from the ring towards the outflow end of the prosthetic mitral valve, the base structure when expanded, being circumferentially D-shaped with a major axis longer than a minor axis thereof, the base structure dimensioned for placement within the native mitral valve annulus, the base structure having a larger diameter towards the inflow end of the prosthetic mitral valve and a smaller diameter towards the outflow end of the prosthetic mitral valve, the base structure comprising a primary member and a secondary member surrounding the primary member and coupled thereto, the primary member having a closed shape comprising an inflow edge, an outflow edge, and three commissure sections alternating three cusp sections, the secondary member having a closed shape with an inflow edge and an outflow edge;
a cloth cover disposed over the base structure; and
three flexible tissue leaflets in a tri-foil configuration, the leaflets projecting towards the flow axis, the leaflets secured to the stent along the cusp and commissure sections of the primary member.
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Abstract
A prosthetic mitral valve with a compressible and expandable base structure that, when expanded, is circumferentially oval, elliptical, or D-shaped, with a major axis and a minor axis ratio of from about 3:4 to about 4:5. Embodiments of the base structure comprise a primary member and a secondary member surrounding the primary member and coupled thereto. Three flexible leaflets are attached to commissure sections of the primary member in a tri-foil configuration. Embodiments of the prosthetic mitral valve include an atrial ring disposed at the inflow end of the stent.
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Citations
17 Claims
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1. A prosthetic mitral valve comprising:
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an inflow end, an outflow end, and a central flow axis extending from the inflow end to the outflow end; a cloth-covered ring disposed at the inflow end of the prosthetic mitral valve, the ring comprising a plurality of cells, the ring configured for positioning on an atrial side of the native mitral valve annulus and for holding the prosthetic mitral valve in place; a compressible and expandable base extending from the ring towards the outflow end of the prosthetic mitral valve, the base structure when expanded, being circumferentially D-shaped with a major axis longer than a minor axis thereof, the base structure dimensioned for placement within the native mitral valve annulus, the base structure having a larger diameter towards the inflow end of the prosthetic mitral valve and a smaller diameter towards the outflow end of the prosthetic mitral valve, the base structure comprising a primary member and a secondary member surrounding the primary member and coupled thereto, the primary member having a closed shape comprising an inflow edge, an outflow edge, and three commissure sections alternating three cusp sections, the secondary member having a closed shape with an inflow edge and an outflow edge; a cloth cover disposed over the base structure; and three flexible tissue leaflets in a tri-foil configuration, the leaflets projecting towards the flow axis, the leaflets secured to the stent along the cusp and commissure sections of the primary member. - View Dependent Claims (2, 3, 4, 5)
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6. A prosthetic mitral valve comprising:
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an inflow end, an outflow end, and a central flow axis extending from the inflow end to the outflow end; a ring disposed at the inflow end of the prosthetic mitral valve, the ring configured for positioning on an atrial side of a native mitral valve annulus and for holding the prosthetic mitral valve in place; a compressible and expandable base structure extending from the ring towards the outflow end of the prosthetic mitral valve, the base structure when expanded, being circumferentially oval, elliptical, or D-shaped with a major axis longer than a minor axis thereof, the base structure dimensioned for placement within the native mitral valve annulus, the base structure having a larger diameter towards the inflow end of the prosthetic mitral valve and a smaller diameter towards the outflow end of the prosthetic mitral valve, the base structure comprising a primary member and a secondary member surrounding the primary member and coupled thereto, the primary member having a closed shape comprising an inflow edge, an outflow edge, and three commissure sections alternating three cusp sections, the secondary member having a closed shape with an inflow edge and an outflow edge; and three flexible leaflets in a tri-foil configuration, the leaflets projecting towards the flow axis, the leaflets secured to the primary member along the cusp and commissure sections thereof. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification