US 12,279,949 B2
Controlled expression of expandable heart valve
Zachary R. Vidlund, Robbinsdale, MN (US)
Assigned to Cephea Valve Technologies, Inc., Abbott Park, IL (US)
Filed by Cephea Valve Technologies, Inc., Santa Clara, CA (US)
Filed on Aug. 12, 2021, as Appl. No. 17/400,184.
Claims priority of provisional application 63/082,493, filed on Sep. 24, 2020.
Prior Publication US 2022/0087814 A1, Mar. 24, 2022
Int. Cl. A61F 2/24 (2006.01)
CPC A61F 2/2409 (2013.01) [A61F 2/2436 (2013.01); A61F 2210/0014 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A prosthetic heart valve comprising:
a collapsible and self-expandable outer frame configured to engage tissue of a native heart valve, the outer frame having an atrial portion adapted to be positioned on an atrial side of the native heart valve, a ventricle portion adapted to be positioned on a ventricle side of the native heart valve, and a narrowed waist portion between the atrial portion and the ventricle portion;
a collapsible and self-expandable inner frame having an inflow end and an outflow end and being fixedly coupled to the outer frame by a plurality of coupling members so that, prior to expression of the prosthetic heart valve from a delivery device, the inner frame is positioned radially inward of the outer frame, and a constraining band directly coupled to the inner frame and extending around a circumference of the inner frame, wherein the constraining band is positioned at the outflow end of the inner frame; and
a prosthetic valve assembly coupled to, and positioned radially inward of, the inner frame and being configured to allow unidirectional flow of blood through the prosthetic valve assembly from the inflow end to the outflow end, the prosthetic valve assembly including a plurality of prosthetic leaflets having first ends attached to the inner frame and second free ends, the second free ends configured to coapt with each other to provide the unidirectional flow of blood through the prosthetic heart valve,
wherein the inner frame has a first diameter in the absence of applied forces, the constraining band configured to limit the inner frame from expanding to a second diameter greater than the first diameter, wherein limiting the inner frame from expanding to the second diameter greater than the first diameter during expression of the prosthetic heart valve from a delivery device limits stretching of the plurality of prosthetic leaflets,
wherein the outer frame includes a first plurality of coupling arms, and the inner frame includes a second plurality of coupling arms, wherein the first plurality of coupling arms are coupled to the second plurality of coupling arms, prior to expression of the prosthetic heart valve from a delivery device, via the plurality of coupling members,
wherein, in an expanded condition of the prosthetic heart valve, the first plurality of coupling arms extend radially inward toward the second plurality of coupling arms and the second plurality of coupling arms extend radially outward toward the first plurality of coupling arms.