Methods and systems for heart valve therapy
First Claim
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1. A mitral valve replacement system for a heart, the mitral valve including commissural clefts, an anterior leaflet, a posterior leaflet, an annulus and a sub-annular gutter, comprising:
- an anchor assembly configured for placement within the heart, the anchor assembly including a retention structure and a plurality of projections, wherein the anchor assembly is movable between a compressed configuration and an expanded configuration, in which the retention structure is configured for placement at or proximate the mitral valve annulus, while the plurality of projections are placed into contact with the sub-annular gutter, andan artificial valve comprising an expandable frame having a generally D-shaped outer peripheral region configured for engagement within the retention structure of the anchor assembly, and a circular valve orifice located radially inward from the generally D-shaped outer peripheral region and carrying valve leaflets directly attached to the circular valve orifice, wherein the expandable frame of the artificial valve is expandable from a collapsed configuration, while the anchor assembly remains in the expanded configuration, to a deployed configuration to selectively contact and mate with the retention structure of the anchor assembly;
wherein the anchor assembly leaves the leaflets of the mitral valve unaffected and the anchor assembly does not interrupt leaflet, chordae, or native valve function of the mitral valve prior to placement of the artificial valve.
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Abstract
Systems and methods for medical interventional procedures, including approaches to valve implantation. In one aspect, the methods and systems involve a modular approach to mitral valve therapy.
281 Citations
28 Claims
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1. A mitral valve replacement system for a heart, the mitral valve including commissural clefts, an anterior leaflet, a posterior leaflet, an annulus and a sub-annular gutter, comprising:
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an anchor assembly configured for placement within the heart, the anchor assembly including a retention structure and a plurality of projections, wherein the anchor assembly is movable between a compressed configuration and an expanded configuration, in which the retention structure is configured for placement at or proximate the mitral valve annulus, while the plurality of projections are placed into contact with the sub-annular gutter, and an artificial valve comprising an expandable frame having a generally D-shaped outer peripheral region configured for engagement within the retention structure of the anchor assembly, and a circular valve orifice located radially inward from the generally D-shaped outer peripheral region and carrying valve leaflets directly attached to the circular valve orifice, wherein the expandable frame of the artificial valve is expandable from a collapsed configuration, while the anchor assembly remains in the expanded configuration, to a deployed configuration to selectively contact and mate with the retention structure of the anchor assembly; wherein the anchor assembly leaves the leaflets of the mitral valve unaffected and the anchor assembly does not interrupt leaflet, chordae, or native valve function of the mitral valve prior to placement of the artificial valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mitral valve replacement system for a heart having an inflow end and an outflow end, the mitral valve including commissural clefts, an anterior leaflet, a posterior leaflet, an annulus and a sub-annular gutter, comprising:
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an anchor assembly configured for placement within the heart, the anchor assembly including a first expandable frame movable between a compressed configuration and an expanded configuration, a retention structure closer to the inflow end than the outflow end and a plurality of sub-annular projections, two of the plurality of sub-annular projections in the expanded configuration being configured to be in contact with the sub-annular gutter proximate the commissural cleft and another two of the plurality of sub-annular projections in the expanded configuration being configured to be in contact with the sub-annular gutter behind the posterior leaflet in the sub-annular gutter, wherein in the expanded configuration each of the plurality of sub-annular projections has one of its two ends attached to a portion of the anchor assembly that is radially inward of and below the retention structure and closer to the outflow end than the inflow end; and an artificial valve comprising;
a second expandable frame and valve leaflets attached to the second expandable frame, wherein the second expandable frame of the artificial valve is expandable from a collapsed configuration, while the anchor assembly remains in the expanded configuration, to a deployed configuration to selectively contact and mate with the retention structure of the anchor assembly;wherein the anchor assembly leaves the leaflets of the mitral valve unaffected and the anchor assembly does not interrupt leaflet, chordae, or native valve function of the mitral valve prior to placement of the artificial valve. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A mitral valve replacement system for a heart, the mitral valve including commissural clefts, an anterior leaflet, a posterior leaflet, an annulus and a sub-annular gutter, comprising:
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an anchor assembly configured for placement within the heart; an artificial valve configured to contact and mate with a retention structure of the anchor assembly; the anchor assembly being movable to an anchoring configuration in which the artificial valve is deployed within the anchor assembly, the anchor assembly in the anchoring configuration includes;
the retention structure, a plurality of sub-annular projections positioned lower than the retention structure, and a generally central hub positioned entirely below the retention structure, positioned entirely below the plurality of sub-annular projections, and positioned radially inward from the retention structure and the plurality of sub annular-projections, at least one of the plurality of sub-annular projections being configured to engage with the sub-annular gutter; andwherein the anchor assembly leaves the leaflets of the mitral valve unaffected and the anchor assembly does not interrupt leaflet, chordae, or native valve function of the mitral valve, while said at least one of the plurality of sub-annular projections is configured to engage with the sub-annular gutter. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification