US 12,485,001 B2
Covered stent
Shuang Li, SIP Suzhou (CN); Liyou Guo, SIP Suzhou (CN); and Jie Xia, SIP Suzhou (CN)
Assigned to SUZHOU ZENITH VASCULAR SCITECH LIMITED, SIP Suzhou (CN)
Appl. No. 17/914,154
Filed by SUZHOU ZENITH VASCULAR SCITECH LIMITED, SIP Suzhou (CN)
PCT Filed Apr. 6, 2021, PCT No. PCT/CN2021/085636
§ 371(c)(1), (2) Date Sep. 23, 2022,
PCT Pub. No. WO2022/068167, PCT Pub. Date Apr. 7, 2022.
Claims priority of application No. 202011052730.8 (CN), filed on Sep. 29, 2020.
Prior Publication US 2023/0125526 A1, Apr. 27, 2023
Int. Cl. A61F 2/06 (2013.01); A61F 2/07 (2013.01); A61F 2/82 (2013.01); A61F 2/88 (2006.01)
CPC A61F 2/07 (2013.01) [A61F 2002/077 (2013.01); A61F 2230/0067 (2013.01); A61F 2250/0039 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A covered stent, comprising:
a stent body, having a proximal end and a distal end, wherein the proximal end is configured to be arranged upstream in a blood vessel with respect to the distal end; and
a filter membrane, having a mounting portion and a free portion, wherein the mounting portion is connected with the stent body, and the free portion is connected with the mounting portion and free from the stent body;
wherein the filter membrane comprises at least two annular partial bodies distributed along an axial direction of the stent body, wherein a first end of each of the at least two partial bodies is connected with the stent body, a first end of each of the at least two partial bodies form the mounting portion which is annular, and a second end of each of the at least two partial bodies forms the free portion which is annular;
wherein among the at least two annular partial bodies, the free portion of one partial body is configured to cover the mounting portion of another annular partial body adjacent to one of the at least two annular partial bodies; and
wherein the free portion is provided with an incision extending in the axial direction of the stent body, wherein the incision is configured to open to allow blood to pass through the free portion when the free portion is impacted by the blood.