US 12,226,306 B2
Aortic stent-graft
Hongwei Chen, Quanzhou (CN); Weiguo Fu, Shanghai (CN); and Lixin Wang, Shanghai (CN)
Assigned to Hongwei Chen, Quanzhou (CN)
Appl. No. 17/426,654
Filed by Hongwei Chen, Quanzhou (CN)
PCT Filed Jan. 17, 2020, PCT No. PCT/CN2020/072625
§ 371(c)(1), (2) Date Jul. 29, 2021,
PCT Pub. No. WO2020/156219, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 201920168771.X (CN), filed on Jan. 31, 2019.
Prior Publication US 2022/0047376 A1, Feb. 17, 2022
Int. Cl. A61F 2/07 (2013.01); A61F 2/06 (2013.01)
CPC A61F 2/07 (2013.01) [A61F 2002/061 (2013.01); A61F 2002/072 (2013.01); A61F 2002/075 (2013.01); A61F 2220/0075 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An aortic stent-graft, comprising
a main aortic stent-graft and a plurality of branch arterial stent-grafts, wherein the main aortic stent-graft comprises
a proximal segment,
a distal segment, and
a depressed segment connecting the proximal segment and the distal segment;
a first step and a second step sequentially from left to right are provided on a top surface of the depressed segment, wherein
a left side of the first step is fixedly connected to a middle-lower part of the right side wall of the proximal segment through a first covering membrane; and
a left side of the second step is fixedly connected to a middle-lower part of a right side wall of the first step through a second covering membrane;
a first orifice is formed on a middle-upper part of a right side wall of the proximal segment, one or two second orifices are formed on a right side wall of the first step, and one or two second orifices are formed on a right side wall of the second step;
a first inner chimney stent is fixed inside the first orifice and one or two second inner chimney stents are fixed inside each of the one or two second orifices;
the first inner chimney stent is sutured along an inner wall of the proximal segment, the one or two second inner chimney stents are sutured along an inner wall of the first step, and the one or two second inner chimney stents are sutured along an inner wall of the second step;
one of the plurality of branch arterial stent-grafts is placed inside each of the first inner chimney stent and the second inner chimney stent; and
no orifice is formed on a left side wall of the distal segment.