| CPC A61F 2/2442 (2013.01) [A61B 5/0215 (2013.01); A61B 17/00234 (2013.01); A61M 27/002 (2013.01); A61B 2017/00243 (2013.01); A61B 2017/00252 (2013.01); A61B 2017/00575 (2013.01); A61B 2017/00592 (2013.01); A61B 2017/00606 (2013.01); A61F 2/24 (2013.01); A61F 2/2493 (2013.01)] | 30 Claims |

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1. A device for implantation in an opening in a septal wall in a heart of a patient, the device comprising:
a core segment defining a passage, after implantation of the device, that enables flow to traverse from one side of the septal wall to another side of the septal wall, the core segment having a first diameter when deployed;
a first annular structure contiguous with the core segment; and
a second annular structure contiguous with the core segment,
wherein the device is collapsible, so that the core segment has a second diameter less than the first diameter to enable percutaneous delivery of the device to the heart of the patient, and
wherein the core segment comprises a tube that extends beyond the first annular structure or the second annular structure into an atrial chamber.
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