US 12,446,908 B2
Floating clot retrieval device for removing clots from a blood vessel
Anushree Dwivedi, Galway (IE); and Patrick Connolly, Galway (IE)
Assigned to NEURAVI LIMITED, Galway (IE)
Filed by Neuravi Limited, Galway (IE)
Filed on Jul. 3, 2023, as Appl. No. 18/217,647.
Application 18/217,647 is a continuation of application No. 16/852,093, filed on Apr. 17, 2020, granted, now 11,730,501.
Prior Publication US 2023/0346403 A1, Nov. 2, 2023
Int. Cl. A61B 17/221 (2006.01); A61B 17/00 (2006.01); A61B 17/22 (2006.01)
CPC A61B 17/221 (2013.01) [A61B 2017/00336 (2013.01); A61B 2017/22001 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for retrieving a clot, the method comprising the steps of:
deploying an expandable frame into a deployed configuration from a delivery configuration within a blood vessel and proximate a clot, the expandable frame comprising:
a proximal end,
a distal end, and
two or more frame members joined at the proximal end and the distal end of the expandable frame, the two or more frame members each comprising one or more pinching cells located on each of the one or more frame members, each pinching cell of the one or more pinching cells comprising a collapsed state within a microcatheter and an expanded state distal of the microcatheter configured to pinch at least a portion of the clot, the expandable frame deployed such that at least one pinching cell of the one or more pinching cells are in contact with the at least a portion of the clot, wherein each pinching cell of the one or more pinching cells is positioned between a respective proximal collar and a respective distal collar;
advancing a lumen of the microcatheter over the expandable frame such that a portion of the expandable frame at least partially collapses into the lumen of the microcatheter, at least one pinching cell of the one or more pinching cells at least partially collapse into the lumen of the microcatheter, and at least one pinching cell of the one or more pinching cells are in contact with the at least a portion of the clot;
pinching the at least one pinching cell of the one or more pinching cells in contact with the at least a portion of the clot on movement from the collapsed state to a clot pinching state of the expanded state until the at least a portion of the clot is compressed between at least a pair of strut members of the one or more pinching cells; and
withdrawing the microcatheter, the expandable frame, and the at least a portion of
the clot while pinching the one or more pinching cells,
wherein each pinching cell of the one or more pinching cells is slidably and rotatably placed on the two or more frame members.