Minimally invasive valve replacement system
First Claim
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1. A valve assembly comprising:
- a replacement valve having a scalloped inflow annulus having a scalloped edge, an outflow annulus, and a plurality of leaflets between said scalloped inflow annulus and said outflow annulus; and
an expandable and collapsible stent anchoring structure composed of a shape memory metal alloy material having an undulating inflow rim having a curvature that coextends with the scalloped edge of the inflow annulus and an outflow rim connected by support posts and adopted to support the replacement valve and the outflow rim being longitudinally displaced from the replacement valve leaflets, the anchoring structure inflow rim having an undulating configuration to support the scalloped inflow annulus of the replacement valve;
said anchoring structure being dimensioned to extend longitudinally from an attachment location near the inflow annulus of a native valve sinus to an attachment location near the outflow annulus of a native valve sinus.
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Abstract
Methods and systems for minimally invasive replacement of a valve. The system includes a collapsible valve and anchoring structure, devices and methods for expanding the valve anchoring structure, adhesive means to seal the valve to the surrounding tissue, a catheter-based valve sizing and delivery system, native valve removal means, and a temporary valve and filter assembly to facilitate removal of debris material. The valve assembly comprises a valve and anchoring structure for the valve, dimensioned to fit substantially within the valve sinus.
650 Citations
17 Claims
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1. A valve assembly comprising:
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a replacement valve having a scalloped inflow annulus having a scalloped edge, an outflow annulus, and a plurality of leaflets between said scalloped inflow annulus and said outflow annulus; and an expandable and collapsible stent anchoring structure composed of a shape memory metal alloy material having an undulating inflow rim having a curvature that coextends with the scalloped edge of the inflow annulus and an outflow rim connected by support posts and adopted to support the replacement valve and the outflow rim being longitudinally displaced from the replacement valve leaflets, the anchoring structure inflow rim having an undulating configuration to support the scalloped inflow annulus of the replacement valve; said anchoring structure being dimensioned to extend longitudinally from an attachment location near the inflow annulus of a native valve sinus to an attachment location near the outflow annulus of a native valve sinus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A valve assembly comprising:
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a replacement valve having a scalloped inflow annulus, an outflow annulus, and a plurality of leaflets between said scalloped inflow annulus and said outflow annulus; and an expandable and collapsible stent anchoring structure composed of a shape memory metal alloy material having an inflow rim and an outflow rim connected by support posts and adopted to support the replacement valve and the outflow rim being longitudinally displaced from the replacement valve leaflets, the anchoring structure inflow rim having an undulating configuration to support the scalloped inflow annulus of the replacement valve; said anchoring structure being dimensioned to extend longitudinally from an attachment location near the inflow annulus of a native valve sinus to an attachment location near the outflow annulus of a native valve sinus wherein said support posts are configured to coincide longitudinally with a native valve sinus commissural posts and wherein said support posts comprise axially extending slots toward the outflow rim for the attachment of a valve'"'"'s commissural tabs. - View Dependent Claims (16, 17)
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Specification