US 12,343,517 B2
Cardiac pump with speed adapted for ventricle unloading
Alexander Medvedev, Ann Arbor, MI (US); and Masamichi Yanai, Ann Arbor, MI (US)
Assigned to TC1 LLC, St. Paul, MN (US)
Filed by TC1 LLC, St. Paul, MN (US)
Filed on Jun. 30, 2023, as Appl. No. 18/216,925.
Application 18/216,925 is a continuation of application No. 17/205,511, filed on Mar. 18, 2021, granted, now 11,724,094.
Application 17/205,511 is a continuation of application No. 16/577,242, filed on Sep. 20, 2019, granted, now 10,980,928, issued on Apr. 20, 2021.
Application 16/577,242 is a continuation of application No. 15/640,001, filed on Jun. 30, 2017, granted, now 10,456,513, issued on Oct. 29, 2019.
Application 15/640,001 is a continuation of application No. 13/873,551, filed on Apr. 30, 2013, granted, now 9,713,663, issued on Jul. 25, 2017.
Prior Publication US 2023/0414923 A1, Dec. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 60/232 (2021.01); A61M 60/148 (2021.01); A61M 60/178 (2021.01); A61M 60/515 (2021.01); A61M 60/538 (2021.01)
CPC A61M 60/232 (2021.01) [A61M 60/178 (2021.01); A61M 60/515 (2021.01); A61M 60/538 (2021.01); A61M 60/148 (2021.01); A61M 2205/3334 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A blood pump device, comprising:
a pumping chamber having an inlet for receiving blood from a ventricle of a user;
an impeller received in the pumping chamber;
a motor coupled to the impeller for driving rotation of the impeller; and
controller that is configured to:
determine a timing of a cardiac cycle of the user; and
vary a speed of the motor based on the timing of the cardiac cycle of the user such that:
a speed of the motor begins ramping down during a systolic phase of a cardiac cycle; and
the speed of the motor begins ramping up during a diastolic phase of the cardiac cycle.