US 11,883,642 B2
Blood pump system
Gino F. Morello, Houston, TX (US)
Assigned to ReliantHeart, Inc., Houston, TX (US)
Filed by RELIANTHEART, INC., Houston, TX (US)
Filed on May 21, 2018, as Appl. No. 15/985,664.
Application 15/985,664 is a continuation of application No. 12/594,792, granted, now 9,974,894, previously published as PCT/US2008/059585, filed on Apr. 7, 2008.
Claims priority of provisional application 60/910,369, filed on Apr. 5, 2007.
Prior Publication US 2019/0374692 A1, Dec. 12, 2019
Int. Cl. A61M 60/422 (2021.01); A61M 60/216 (2021.01); A61M 60/178 (2021.01); A61M 60/546 (2021.01); A61M 60/523 (2021.01); A61M 60/148 (2021.01)
CPC A61M 60/422 (2021.01) [A61M 60/178 (2021.01); A61M 60/216 (2021.01); A61M 60/523 (2021.01); A61M 60/546 (2021.01); A61M 60/148 (2021.01); A61M 2205/3331 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/8212 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of operating a blood pump system, the method comprising:
energizing an implanted blood flow sensor at a first time for a first period;
measuring with the implanted blood flow sensor a flow rate of blood-pumped during the first period;
deenergizing the implanted blood flow sensor at the end of the first period;
determining an amount of power consumed by a blood pump motor during the first period;
determining a blood pump motor speed during the first period;
deriving a flow rate of blood through the blood pump during the first period as a function of the power consumed, and blood pump motor speed; and
delaying measuring a flow rate at a second time based on the magnitude of a difference between the measured blood flow rate during the first period and the derived blood flow rate during the first period.