US 12,102,328 B2
Left atrial appendage occluder and left atrial appendage occlusion system
Yi Zhou, Shanghai (CN); Haiyong Huang, Shanghai (CN); Shaoyang Liu, Shanghai (CN); Yao Yao, Shanghai (CN); and Junfei Li, Shanghai (CN)
Assigned to SHANGHAI MICROPORT CARDIOADVENT CO., LTD., Shanghai (CN)
Appl. No. 17/277,527
Filed by SHANGHAI MICROPORT CARDIOADVENT CO., LTD., Shanghai (CN)
PCT Filed Sep. 11, 2019, PCT No. PCT/CN2019/105322
§ 371(c)(1), (2) Date Mar. 18, 2021,
PCT Pub. No. WO2020/063348, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 201811150646.2 (CN), filed on Sep. 29, 2018.
Prior Publication US 2022/0031333 A1, Feb. 3, 2022
Int. Cl. A61B 17/12 (2006.01)
CPC A61B 17/12122 (2013.01) [A61B 17/12172 (2013.01); A61B 2017/1205 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A left atrial appendage occluder, comprising an occluding stent,
a proximal securing member and a distal securing member,
the occluding stent comprising an occlusion structure and a traction structure, the occlusion structure having a first proximal end and a first distal end opposing the first proximal end, the proximal securing member disposed at the first proximal end and configured to form a closed configuration at the first proximal end, the first distal end configured in an open configuration, the traction structure attached to the occlusion structure and at least partially overlapped with the occlusion structure along an axial direction, the traction structure comprising a plurality of traction elements each having a first end connected to the distal securing member and a second end connected to the occlusion structure, wherein movement of the distal securing member toward the proximal securing member is able to cause the occluding stent to transition from an expanded configuration to a collapsed configuration,
wherein the occlusion structure is divided into a first portion and a second portion with a connection point of the traction structure to the occlusion structure serving as a boundary, the first portion is located on one side of the boundary, and the second portion is located on the other side of the boundary, the connection point is disposed between the first portion and the second portion along the axial direction,
wherein the occlusion structure comprises a plurality of mesh cells, at least one of the plurality of mesh cells distal to the connection point,
wherein a length of the second portion is equal to 3% to 30% of a total length of the occlusion structure.