Valve sealing tissue and mesh structure
A prosthetic valve device that includes multiple layers and liners attached to various locations on the layers to prevent paravalvular leakage.
1. A prosthetic valve comprising:
a support structure having a delivery configuration and a delivered configuration, wherein in the delivery configuration the support structure takes the form of an elongated tube, and in the delivered configuration, the support structure folds to take on a form that includes:
an outer layer;
a middle layer; and
an inner layer;
a valve assembly including:
a wireform including commissural points that extend beyond a proximal end of the support structure, and including a distal end that connects the valve assembly to the inner layer of the support structure;
valve material attached to the wireform to create valve leaflets, said valve material extending from the commissural points of the wireform beyond a first fold of the support structure to form a valve skirt;
wherein the valve skirt is attached to the middle layer of the support structure;
an outer liner attached to an inside surface of the outer layer of the support structure; and
a tissue ring attached to the middle layer of the support structure.
2. The prosthetic valve of claim 1 wherein said valve skirt is attached to an inside surface of the middle layer of the support structure.
3. The prosthetic valve of claim 1 wherein said support structure comprises a mesh tube.
4. The prosthetic valve of claim 1 wherein said outer layer comprises a flared section, an upright section extending from the flared section, a tapered section extending from the upright section, and a first folded section.
5. The valve prosthesis of claim 4 wherein the outer liner is attached to the flared section, the upright section and the tapered section of the outer layer.