US 12,329,501 B2
Determination of cardiac parameters for modulation of blood pump support
Christian Moyer, Danvers, MA (US); Scott C. Corbett, Danvers, MA (US); Ahmad El Katerji, Danvers, MA (US); and David Weber, Danvers, MA (US)
Assigned to ABIOMED, INC., Danvers, MA (US)
Filed by ABIOMED, Inc., Danvers, MA (US)
Filed on Nov. 2, 2022, as Appl. No. 17/979,021.
Application 17/979,021 is a continuation of application No. 16/936,534, filed on Jul. 23, 2020, granted, now 11,529,062.
Application 16/936,534 is a continuation of application No. 16/003,669, filed on Jun. 8, 2018, granted, now 10,765,791, issued on Sep. 8, 2020.
Claims priority of provisional application 62/635,662, filed on Feb. 27, 2018.
Claims priority of provisional application 62/517,668, filed on Jun. 9, 2017.
Prior Publication US 2023/0157557 A1, May 25, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 5/0215 (2006.01); A61B 5/029 (2006.01); A61M 60/13 (2021.01); A61M 60/216 (2021.01); A61M 60/422 (2021.01); A61M 60/531 (2021.01); A61M 60/538 (2021.01); A61M 60/546 (2021.01); A61M 60/585 (2021.01); A61M 60/857 (2021.01)
CPC A61B 5/0215 (2013.01) [A61B 5/029 (2013.01); A61M 60/13 (2021.01); A61M 60/216 (2021.01); A61M 60/422 (2021.01); A61M 60/531 (2021.01); A61M 60/538 (2021.01); A61M 60/546 (2021.01); A61M 60/585 (2021.01); A61M 60/857 (2021.01); A61M 2205/18 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/3344 (2013.01); A61M 2205/3365 (2013.01); A61M 2205/502 (2013.01); A61M 2205/52 (2013.01); A61M 2210/125 (2013.01); A61M 2210/127 (2013.01); A61M 2230/30 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A system for providing cardiac support to a heart, the system comprising:
a blood pump configured to be positioned in a heart, the blood pump comprising:
a cannula; and
a motor operable at a motor speed and configured to draw a variable motor current to provide a level of cardiac support to the heart; and
a controller configured to:
measure an aortic pressure;
measure the motor current;
determine a pressure gradient across the cannula associated with the motor current;
calculate, from the aortic pressure and the pressure gradient across the cannula associated with the motor current, a cardiac parameter;
record, in a memory, the calculated cardiac parameter;
determine, based on the calculated cardiac parameter, a heart function parameter;
determine, based on the calculated cardiac parameter and the heart function parameter, a problem with a positioning of the blood pump; and
display a warning.