US 12,274,834 B2
Apparatuses and method for determining if a catheter is engaged with a blood clot
Vahid Saadat, Atherton, CA (US); William Jason Fox, San Mateo, CA (US); Neekon Saadat, Atherton, CA (US); Mojgan Saadat, Atherton, CA (US); Mahyar Z. Kermani, San Ramon, CA (US); and Michael Pare, Menlo Park, CA (US)
Assigned to Inquis Medical, Inc., Menlo Park, CA (US)
Filed by Inquis Medical, Inc., Menlo Park, CA (US)
Filed on Jun. 5, 2023, as Appl. No. 18/329,532.
Application 18/329,532 is a continuation of application No. 17/866,462, filed on Jul. 15, 2022, granted, now 11,730,925.
Application 17/866,462 is a continuation of application No. PCT/US2022/035392, filed on Jun. 28, 2022.
Claims priority of provisional application 63/345,028, filed on May 23, 2022.
Claims priority of provisional application 63/310,989, filed on Feb. 16, 2022.
Claims priority of provisional application 63/287,049, filed on Dec. 7, 2021.
Claims priority of provisional application 63/203,672, filed on Jul. 27, 2021.
Claims priority of provisional application 63/202,880, filed on Jun. 28, 2021.
Prior Publication US 2023/0405273 A1, Dec. 21, 2023
Int. Cl. A61M 25/01 (2006.01); A61B 17/22 (2006.01); A61B 17/3207 (2006.01); A61B 17/00 (2006.01)
CPC A61M 25/01 (2013.01) [A61B 17/22 (2013.01); A61B 17/3207 (2013.01); A61B 17/320783 (2013.01); A61B 2017/00026 (2013.01); A61B 2017/00039 (2013.01); A61B 2017/00119 (2013.01); A61B 2017/22079 (2013.01); A61B 2217/005 (2013.01)] 32 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a flexible elongate body having a suction lumen extending therethrough;
an aspiration opening into the suction lumen at a distal end region of the flexible elongate body;
an aspiration opening sensor comprising at least two electrodes that are each positioned on a rim of the aspiration opening and extend at least partially around the rim and into the suction lumen; and
a controller coupled to the aspiration opening sensor and configured to distinguish between clot and blood based on an impedance signal between the at least two electrodes.