Valve apparatus, system and method
A cardiac valve with a first anchor frame and a cover on the first anchor frame for unidirectional flow of a liquid through the valve.
1. A valve, comprising:
a first anchor frame having a first single contiguous frame member that forms a ring around a longitudinal axis of the valve to define an opening through the first anchor frame, the ring comprising apexes;
two or more leaflets coupled to the first anchor frame; and
one or more anchor members extending only from the apexes of the ring, the one or more anchor members movable from a first predetermined shape to a second predetermined shape, the second predetermined shape being different than the first predetermined shape.
2. The valve of claim 1 , wherein the one or more anchor members extend parallel with the longitudinal axis.
3. The valve of claim 1 , wherein the one or more anchor member extend at an acute angle relative to a common plane extending through the first anchor frame, the common plane being perpendicular to the longitudinal axis.
4. The valve of claim 1 , each anchor member having a free end, wherein the one or more anchor members are a plurality of anchor members arranged in anchor member pairs, wherein when the anchor member pairs are in the first predetermined shape the free ends are further away from each other than when the anchor member pairs are in the second predetermined shape.
5. The valve of claim 1 , each anchor member having a free end, wherein the free end has a linear configuration when the anchor is in the first predetermined shape and the free end has a curved configuration when the anchor is in the second predetermined shape.
6. The valve of claim 1 , the first anchor frame being expandable from a delivery diameter to an implanted diameter, wherein movement of the one or more anchor member from the first predetermined shape to the second predetermined shape is independent from the expansion of the first anchor frame to the implanted diameter.
7. The valve of claim 1 releasably joined to a catheter, the catheter comprising:
a sheath overlaying the first anchor frame in a contracted state; and
one or more deployment members, the one or more deployment members maintaining the one or more anchor members in the first predetermined shape.
8. The valve of claim 7 , wherein the sheath is independently retractable from the one or more deployment members.
9. The valve of claim 7 , including a sealing material positioned between the first anchor frame and the one or more deployment members;
where, upon retracting the one or more deployment members from the valve to anchor the valve to tissue, the sealing material prevents leakage outside of the opening of the valve.
10. A valve, comprising:
a first anchor frame having a first single contiguous frame member that forms a ring around a longitudinal axis of the valve to define an opening through the first anchor frame, the ring comprising turns;
two or more leaflets coupled to the first anchor frame; and
anchor members extending only from the turns of the ring, each anchor member having an end adapted to move from a first position to a second position for anchoring the valve to tissue, the end being in the first position only when the anchor member is releaseably coupled to a delivery catheter.
11. The valve of claim 10 , wherein the anchor members are arranged in pairs and the ends of a pair of anchor members are further away from each other in the first position than in the second position.