US 12,295,838 B2
Systems, devices and methods for folded unibody heart valve stents
Spencer C. Noe, San Miguel, CA (US); Jeremy J. Boyette, Woodside, CA (US); Peter W. Gregg, Santa Cruz, CA (US); Evelyn N. Haynes, Los Gatos, CA (US); and Daniel T. Wallace, Santa Cruz, CA (US)
Assigned to Capstan Medical Inc., Santa Cruz, CA (US)
Filed by Capstan Medical Inc., Santa Cruz, CA (US)
Filed on Sep. 18, 2023, as Appl. No. 18/469,097.
Application 18/469,097 is a continuation of application No. 17/549,690, filed on Dec. 13, 2021, granted, now 11,759,319, issued on Sep. 19, 2023.
Application 17/549,690 is a continuation of application No. 17/083,266, filed on Oct. 28, 2020, granted, now 11,197,755, issued on Dec. 14, 2021.
Prior Publication US 2024/0000566 A1, Jan. 4, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/24 (2006.01)
CPC A61F 2/2418 (2013.01) [A61F 2/2436 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A replacement heart valve, comprising:
a unibody stent frame with a folded double-wall, the stent frame comprising:
a collapsed configuration and an expanded configuration;
an outer wall comprising a downstream open enlarged diameter region, a middle reduced diameter region, and an upstream closed enlarged diameter region;
a tubular inner wall with a central lumen;
a transition wall between the upstream closed enlarged diameter region of the outer wall and inner wall;
a first radius of curvature R1 between the inner wall and the transition wall, a second radius of curvature R2 between the transition wall and the outer wall, and a third radius of curvature R3 at the middle reduced diameter region, wherein R1<R2≤R3; and
a replacement leaflet valve located in the central lumen of the inner wall;
wherein the unibody stent frame further comprises a plurality of longitudinal struts, wherein each longitudinal strut is contiguously located along the inner wall, transition wall and outer wall; and
wherein the plurality of longitudinal struts are integrally formed with a plurality of circumferential struts.