US 12,446,906 B2
Clot retrieval device for ischemic stroke treatment
Michael Losordo, San Juan Capistrano, CA (US); and Jianlu Ma, Irvine, CA (US)
Assigned to NeuroVasc Technologies, Inc., Irvine, CA (US)
Filed by NeuroVasc Technologies, Inc., Irvine, CA (US)
Filed on Sep. 30, 2022, as Appl. No. 17/958,018.
Application 17/958,018 is a continuation in part of application No. 16/943,231, filed on Jul. 30, 2020, granted, now 11,871,947.
Application 16/943,231 is a continuation of application No. 15/991,931, filed on May 29, 2018, granted, now 10,743,895, issued on Aug. 18, 2020.
Application 15/991,931 is a continuation of application No. 15/614,053, filed on Jun. 5, 2017, granted, now 9,993,257, issued on Jun. 12, 2018.
Prior Publication US 2023/0027756 A1, Jan. 26, 2023
Int. Cl. A61B 17/221 (2006.01); A61B 17/22 (2006.01)
CPC A61B 17/221 (2013.01) [A61B 2017/22081 (2013.01); A61B 2017/2215 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A clot removal device, comprising a plurality of segments that includes at least a first segment and a second segment, each segment having two main struts that serve as a supporting frame that is connected to a plurality of secondary struts, wherein:
the plurality of secondary struts form a lattice of cells for each segment;
the two main struts of the first segment having proximal ends that are connected to each other at a single proximal point of the first segment, and distal ends terminating at separate connecting points that are distal from the proximal point, with the connecting points being connected to each other to form a generally tubular structure defining an inner lumen for the first segment, and wherein the lattice of cells, when laid out in a two-dimensional plane, define a single distal point and are symmetrical across a line extending through the connecting points; and
the two main struts of the second segment each having a proximal end connected to the first segment at the connecting points of the two main struts of the first segment, and the two main struts of the second segment also having distal ends that are connected to each other in the second segment at a distal connecting point that is separate from the single distal point; and
wherein the clot removal device is configured to be delivered to a location at or adjacent to a clot or embolus in a blood vessel, and the plurality of segments are configured to be expanded at or adjacent the location of the clot or embolus.