US 11,806,020 B2
Systems and methods for embolization of body structures
Brian E. Merritt, Aliso Viejo, CA (US); and Todd J. Hewitt, Aliso Viejo, CA (US)
Assigned to Sequent Medical, Inc., Aliso Viejo, CA (US)
Filed by MicroVention, Inc., Aliso Viejo, CA (US)
Filed on Dec. 2, 2020, as Appl. No. 17/110,212.
Application 17/110,212 is a continuation of application No. 15/923,266, filed on Mar. 16, 2018, granted, now 10,881,413.
Claims priority of provisional application 62/476,104, filed on Mar. 24, 2017.
Prior Publication US 2021/0169499 A1, Jun. 10, 2021
Int. Cl. A61B 17/12 (2006.01); A61B 17/00 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/12172 (2013.01) [A61B 17/12113 (2013.01); A61B 2017/00867 (2013.01); A61B 2017/1205 (2013.01); A61B 2017/12054 (2013.01); A61B 2090/3966 (2016.02)] 20 Claims
OG exemplary drawing
 
1. A device for treatment of a vascular defect, comprising:
a self-expanding permeable shell having a proximal end, a distal end, and a longitudinal axis; the shell comprising a mesh, wherein the permeable shell has a radially constrained elongated shape configured for delivery within a microcatheter and has an expanded shape with an axially shortened configuration relative to the radially constrained state;
the expanded shape of the permeable shell forming a first plurality of circumferentially-arrayed lobes and a second plurality of circumferentially-arrayed lobes, and,
a circumferentially-extending channel located between the first plurality of circumferentially-arrayed lobes and the second plurality of circumferentially-arrayed lobes;
wherein the circumferentially-extending channel, the first plurality of circumferentially-arrayed lobes, and the second plurality of circumferentially-arrayed lobes are each formed from a plurality of elongated resilient filaments of the mesh;
wherein the mesh has a memorized shape which self-expands to form the circumferentially-extending channel, the first plurality of circumferentially-arrayed lobes, and the second plurality of circumferentially-arrayed lobes;
wherein the first plurality of circumferentially-arrayed lobes extend between the proximal end of the shell and the circumferentially-extending channel; and,
wherein the second plurality of circumferentially-arrayed lobes extend between the distal end of the shell and the circumferentially-extending channel.