US 12,171,648 B2
Filter
Xiaole Jia, Shenzhen (CN); Huiqiang Tang, Shenzhen (CN); and Anning Li, Shenzhen (CN)
Assigned to LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD, Shenzhen (CN)
Appl. No. 16/956,782
Filed by LIFETECH SCIENTIFIC (SHENZHEN) CO., LTD, Shenzhen (CN)
PCT Filed Dec. 5, 2018, PCT No. PCT/CN2018/119275
§ 371(c)(1), (2) Date Jun. 22, 2020,
PCT Pub. No. WO2019/128652, PCT Pub. Date Jul. 4, 2019.
Claims priority of application No. 201711434036.0 (CN), filed on Dec. 26, 2017; and application No. 201711437874.3 (CN), filed on Dec. 26, 2017.
Prior Publication US 2020/0315769 A1, Oct. 8, 2020
Int. Cl. A61F 2/01 (2006.01)
CPC A61F 2/012 (2020.05) [A61F 2/0108 (2020.05); A61F 2/011 (2020.05); A61F 2002/016 (2013.01); A61F 2220/0008 (2013.01); A61F 2230/006 (2013.01); A61F 2250/0029 (2013.01); A61F 2250/0037 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A filter, comprising: a main body part, the main body part comprising a heart-proximal end, a plurality of connecting segments, and a first filter mesh connected between the heart-proximal end and the plurality of connecting segments,
wherein one end, connected to the first filter mesh, of the plurality of connecting segments is bent towards one side of a longitudinal center axis of the filter to form a bending part, and a vertical distance between the proximal end of the bending part and the longitudinal center axis of the filter is less than a vertical distance between the distal end of the bending part and the longitudinal center axis of the filter;
wherein the first filter mesh comprises a plurality of first branch segments, each of the plurality of first branch segments has a distal end away from the heart-proximal end, two adjacent distal ends of the plurality of first branch segments converge to form a distal end of the first filter mesh, and the distal end of the first filter mesh is directly connected to the bending part;
wherein the bending part further comprises a first bending segment and a second bending segment which are connected, the first bending segment is connected between the distal end of the first filter mesh and a proximal end of the second bending segment, the first bending segment comprises a straight segment parallel to the longitudinal center axis of the filter, and a vertical distance between the proximal end of the second bending segment and the longitudinal center axis of the filter is less than a vertical distance between a distal end of the second bending segment and the longitudinal center axis of the filter;
wherein a ratio of a distance between the proximal end of the bending part and the distal end of the bending part in the direction of the longitudinal center axis of the filter to a distance between both ends of each of the plurality of connecting segments in the direction of the longitudinal center axis of the filter is 1/20-⅗; and
wherein the main body part further comprises a heart-distal end and a second filter mesh connected between the heart-distal end and the plurality of the connecting segments.