Prosthetic heart valves, support structures and systems and methods for implanting same
Described herein are systems and methods for operation of a prosthetic valve support structure ( 32 ) having additional reinforcement coupled with panels ( 36 ). Multiple support members ( 620 ) are distributed across the inner surface of the valve support structure ( 32 ) at regular intervals. Each support member ( 620 ) can include a looped portion ( 621 ) to act as a hinge ( 52 ). Each looped portion ( 621 ) is in a location coincidental with the interlace between adjacent panels ( 36 ).
1. A prosthetic valve device, comprising:
a valve support structure comprising three deflectable panels arranged to form the periphery of the valve support structure, the valve support structure being transitionable from an undeployed configuration to a deployed configuration, wherein the valve support structure is generally tubular in the deployed configuration and wherein each panel is concave in the undeployed configuration and convex in the deployed configuration;
a plurality of valve leaflets coupled to an inner lumen of the valve support structure; and
a shape retensive panel expansion member comprising a first arm member and a second arm member and biased to deflect the arm members away from each other, the first arm member being coupled to a surface of a first panel and the second arm member being coupled to a surface of an adjacent, second panel such that deflection of the arm members away from each other causes the first and second panels to expand into the generally tubular configuration.
2. The prosthetic valve device of claim 1 , wherein the expansion member is a first expansion member, the device further comprising a second expansion member and a third expansion member.
3. The prosthetic valve device of claim 1 ,wherein the panel expansion member comprises a central portion located between the two arm portions, the central portion being biased to deflect the two arm portions away from each other.
4. The prosthetic valve device of claim 3 , wherein the central portion is coiled.
5. The prosthetic valve device of claim 4 , wherein the panel expansion member is a wire.
6. The prosthetic valve device of claim 3 , wherein the central portion is a band.
7. The prosthetic valve device of claim 3 , wherein each arm portion is a band.
8. The prosthetic valve device of claim 6 , wherein the panel expansion member is coupled to a surface of the first and second deflectable panels that is outside of the inner lumen of the valve support structure.
9. The prosthetic valve device of claim 8 , wherein the central portion has a radius of curvature greater than that of an underlying interface between the first and second adjacent panels.
10. The prosthetic valve device of claim 1 , wherein the valve support structure comprises no more than three deflectable panels.
11. The prosthetic valve device of claim 1 , wherein the panel expansion member is one of a plurality of panel expansion members.
12. The prosthetic valve device of claim 11 , comprising two panel expansion members coupled to the valve support structure at the interface between each adjacent pair of panels.
13. The prosthetic valve device of claim 11 , comprising three panel expansion members coupled to the valve support structure at the interface between each adjacent pair of panels.