US 11,872,384 B2
Method of operating a blood pump having a magnetically levitated impeller
Christopher J. Cotter, Newburyport, MA (US)
Assigned to TC1 LLC, St. Paul, MN (US)
Filed by TC1 LLC, St. Paul, MN (US)
Filed on Jun. 3, 2021, as Appl. No. 17/338,287.
Application 17/338,287 is a continuation of application No. 16/382,686, filed on Apr. 12, 2019, granted, now 11,040,188.
Application 16/382,686 is a continuation of application No. 15/873,427, filed on Jan. 17, 2018, granted, now 10,300,184, issued on May 28, 2019.
Application 15/873,427 is a continuation of application No. 15/214,099, filed on Jul. 19, 2016, granted, now 9,901,666, issued on Feb. 27, 2018.
Claims priority of provisional application 62/194,608, filed on Jul. 20, 2015.
Prior Publication US 2021/0290936 A1, Sep. 23, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 60/538 (2021.01); A61M 60/422 (2021.01); A61M 60/546 (2021.01); A61M 60/857 (2021.01); A61M 60/178 (2021.01); A61M 60/863 (2021.01); A61M 60/88 (2021.01); A61M 60/232 (2021.01); A61M 60/822 (2021.01); A61M 60/148 (2021.01)
CPC A61M 60/538 (2021.01) [A61M 60/178 (2021.01); A61M 60/232 (2021.01); A61M 60/422 (2021.01); A61M 60/546 (2021.01); A61M 60/822 (2021.01); A61M 60/857 (2021.01); A61M 60/863 (2021.01); A61M 60/88 (2021.01); A61M 60/148 (2021.01); A61M 2205/3317 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/3365 (2013.01); A61M 2205/8212 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of operating a blood pump, the method comprising:
controlling, via a controller, supply of drive currents to drive coils of the blood pump to magnetically rotate an impeller around an impeller axis of rotation within a blood flow channel of a blood pump, wherein rotation of the impeller pumps a flow of blood through the blood pump; and
controlling, via the controller, supply of a bearing current to a levitation coil of the blood pump to magnetically levitate the impeller in a direction transverse to the impeller axis of rotation so as to minimize power consumption of the blood pump during operation of the blood pump.