US 12,064,612 B2
Systems and methods for inertial sensing for VAD diagnostics and closed loop control
John Freddy Hansen, Livermore, CA (US); John Donald Hill, San Francisco, CA (US); Peter Andriola, Dublin, CA (US); Daniel I. Harjes, Carlisle, MA (US); Eric Lee, Oakland, CA (US); Gionata Valchera, Zurich (CH); Nichole Mercier, Pelham, NH (US); and Urim Salltakaj, Spreitenbach (CH)
Assigned to TC1 LLC, St. Paul, MN (US)
Filed by TC1 LLC, St. Paul, MN (US)
Filed on Jan. 13, 2022, as Appl. No. 17/574,905.
Application 17/574,905 is a continuation of application No. 16/511,641, filed on Jul. 15, 2019, granted, now 11,241,570.
Claims priority of provisional application 62/699,500, filed on Jul. 17, 2018.
Prior Publication US 2022/0161016 A1, May 26, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 60/50 (2021.01); A61M 60/148 (2021.01); A61M 60/165 (2021.01); A61M 60/178 (2021.01); A61M 60/216 (2021.01); A61M 60/422 (2021.01); A61M 60/515 (2021.01); A61M 60/538 (2021.01); A61M 60/816 (2021.01)
CPC A61M 60/148 (2021.01) [A61M 60/165 (2021.01); A61M 60/178 (2021.01); A61M 60/216 (2021.01); A61M 60/422 (2021.01); A61M 60/515 (2021.01); A61M 60/538 (2021.01); A61M 60/816 (2021.01); A61M 2205/3334 (2013.01); A61M 2205/50 (2013.01); A61M 2210/125 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of controlling operation of a ventricular assist device (VAD) implanted within a patient having a heart, the method comprising:
maintaining attachment of a housing of the VAD to a ventricular heart wall of the heart so that motion of the ventricular heart wall is transferred to the housing;
processing, by a controller, output of an accelerometer supported by the housing to measure accelerations of the VAD, wherein the VAD comprises the accelerometer;
processing, by the controller, the accelerations of the VAD to measure at least one of a respiratory activity of the patient or a cardiac cycle timing of the patient; and
controlling, by the controller, operation of the VAD based on at least one of the respiratory activity or the cardiac cycle timing.