US 11,980,379 B2
Clot retrieval system for removing occlusive clot from a blood vessel
Brendan Casey, Barna (IE); David Vale, Barna (IE); Maeve Holian, Galway (IE); David Hardiman, Dublin (IE); and Grainne O'Connor, Galway (IE)
Assigned to NEURAVI LIMITED, Galway (IE)
Filed by NEURAVI LIMITED, Galway (IE)
Filed on Dec. 30, 2021, as Appl. No. 17/566,003.
Application 17/566,003 is a continuation of application No. 16/021,505, filed on Jun. 28, 2018, granted, now 11,253,278.
Application 16/021,505 is a continuation in part of application No. 15/359,943, filed on Nov. 23, 2016, granted, now 10,617,435, issued on Apr. 14, 2020.
Application 15/359,943 is a continuation in part of application No. 14/952,202, filed on Nov. 25, 2015, granted, now 10,363,054, issued on Jul. 30, 2019.
Claims priority of provisional application 62/526,005, filed on Jun. 28, 2017.
Claims priority of provisional application 62/342,012, filed on May 26, 2016.
Claims priority of provisional application 62/259,976, filed on Nov. 25, 2015.
Claims priority of provisional application 62/084,960, filed on Nov. 26, 2014.
Prior Publication US 2022/0117615 A1, Apr. 21, 2022
Int. Cl. A61B 17/22 (2006.01); A61B 17/221 (2006.01); A61B 17/00 (2006.01); A61B 17/12 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/22031 (2013.01) [A61B 17/221 (2013.01); A61B 2017/00477 (2013.01); A61B 2017/00526 (2013.01); A61B 2017/00778 (2013.01); A61B 17/12109 (2013.01); A61B 2017/22034 (2013.01); A61B 2017/2212 (2013.01); A61B 2017/2215 (2013.01); A61B 2090/3966 (2016.02)] 18 Claims
OG exemplary drawing
 
1. A clot removal device for removing a clot from a body vessel, comprising:
an expandable structure comprising a network of interconnected struts configured to engage with the clot and comprising a constrained delivery configuration, an expanded clot engaging deployed configuration, the network of interconnected struts being configured in the expanded clot engaging deployed configuration so at least a portion of the network interpenetrates the clot, the expandable structure comprising:
a distal section comprising an open distal end; and
a non-cylindrical proximal pinch section proximal of the distal section and comprising a diameter less than a diameter of the distal section, the proximal pinch section configured to pinch the clot on movement from the expanded clot engaging deployed configuration to the at least partially constrained clot pinching configuration,
the proximal pinch section being further configured such that when the network of interconnected struts is collapsed while in a state of interpenetration with the clot that at least a portion of the proximal pinch section pinches at least a portion of the clot; and an elongate member comprising a proximal end and a distal end connected to the proximal pinch section; and
at least a first cell and at least one second cell formed by the network of interconnected struts, each comprising a collapsed delivery configuration;
a clot engaging element configured to exert an outward radial force when deployed within the blood vessel having an inner diameter which is lower than that of the expanded deployed configuration,
the clot engaging element being configured to exert an outward radial force varying in a generally sinusoidal pattern along a length of the clot engaging element; and
a deployed expanded configuration with each cell further comprising an orifice, the orifice of at least some of the cells being configured to allow at least a portion of the clot body to interpenetrate the structure,
the expandable structure being configured to interpenetrate the clot defined by an extrusion of at least a portion of the clot through at least one of the first cells.