Minimally invasive valve replacement system
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.
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.
2. The valve assembly of claim 1 , wherein said valve has three leaflets.
3. The valve assembly of claim 1 , wherein said support posts are configured to coincide longitudinally with a native valve sinus commissural posts.
4. The valve assembly of claim 1 , wherein said outflow rim comprises a plurality of rings.
5. The valve assembly of claim 4 , wherein said plurality of rings are configured in an undulating pattern.
6. The valve assembly of claim 5 , wherein said plurality of rings are substantially parallel to each other.
7. The valve assembly of claim 6 , wherein said plurality of rings are connected by a vertical element.
8. The valve assembly of claim 1 , wherein said inflow rim comprises a plurality of rings.
9. The valve assembly of claim 8 , wherein said plurality of rings are configured in an undulating pattern.
10. The valve assembly of claim 9 , wherein said plurality of rings are substantially parallel to each other.
11. The valve assembly of claim 10 , wherein said plurality of rings are connected by a vertical element.
12. The valve assembly of claim 1 , wherein said inflow rim comprises one ring.
13. The valve assembly of claim 12 , wherein said ring is configured in an undulating pattern.
14. The valve assembly of claim 1 , wherein said anchoring structure is collapsible to at least 50% of its expanded diameter.
15. A valve assembly comprising:
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.
16. The valve assembly of claim 15 , wherein said support posts comprise triangular shaped elements at the inflow rim.
17. The valve assembly of claim 16 , wherein said support posts further comprise a plurality of bores on either side of said slots to facilitate attachment of the commissural tabs.