Stented prosthetic heart valves
A surgical sutureless valve that is attached to a stent frame for delivery to a location in a patient using percutaneous implantation devices and methods.
1. A stented valve comprising:
a compressible and expandable stent structure comprising:
a generally tubular body portion having an interior area;
a longitudinal axis; and
at least two v-shaped commissure structures, each of which comprises a first commissure segment having a first end and a second end, and a second commissure segment having a first end and a second end, wherein the first and second commissure segments intersect at their second ends at an intersection point; and
a bioprosthetic valve positioned at least partially within the interior area of the tubular body portion of the stent structure and comprising:
an outer tubular portion comprising at least two commissure extensions and an inner wall from which a plurality of leaflets extend; and
at least one scalloped portion extending between adjacent commissure extensions;
wherein each commissure extension is directly secured to one of the v-shaped commissure structures with a plurality of suture loops extending along a length between the first and second ends of each of the first and second commissure segments, wherein each plurality of suture loops is slideable along one of the first and second commissure segments between its first and second ends to allow for free movement of each of the commissure extensions relative to the commissure segments of the stent structure along its longitudinal axis during compression and expansion of the stent structure.
2. The stented valve of claim 1 , wherein each of the at least one scalloped portions is secured to the stent structure.
3. The stented valve of claim 2 , wherein the scalloped portions are sutured to the stent structure so that they are slideable relative to the stent structure.
4. The stented valve of claim 1 , wherein the stent structure is self-expandable from a compressed condition to an expanded condition with the removal of an external compressive force.
5. The stented valve of claim 1 , wherein the stent structure is expandable from a compressed condition to an expanded condition with the application of an outward expansion force.
6. The stented valve of claim 1 , wherein the outer tubular portion of the bioprosthetic valve comprises three commissure extensions.
7. The stented valve of claim 6 , wherein the bioprosthetic valve comprises three leaflets.
8. The stented valve of claim 1 , wherein the first end of each of the first and second commissure segments of each of the v-shaped commissure structures is positioned between an inflow end of the stent structure and a bottom edge of one of the scalloped portions.
9. The stented valve of claim 8 , wherein the intersection point of each of the v-shaped commissure structures is positioned between the bottom edge of one of the scalloped portions and an outflow end of the stent structure.
10. The stented valve of claim 1 , further comprising a support wire extending between the intersection points of two adjacent v-shaped commissure structures.