US 12,465,747 B2
Monitoring of a cardiac assist device
Per Steinar Halvorsen, Oslo (NO); Andreas Espinoza, Hovik (NO); and Erik Fosse, Oslo (NO)
Assigned to OSLO UNIVERSITETSSYKEHUS HF, Oslo (NO)
Filed by OSLO UNIVERSITETSSYKEHUS HF, Oslo (NO)
Filed on Sep. 6, 2023, as Appl. No. 18/462,135.
Application 18/462,135 is a continuation of application No. 14/901,023, granted, now 11,752,324, previously published as PCT/EP2014/063746, filed on Jun. 27, 2014.
Claims priority of application No. 1311494 (GB), filed on Jun. 27, 2013.
Prior Publication US 2023/0405304 A1, Dec. 21, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 60/538 (2021.01); A61M 60/178 (2021.01); A61M 60/216 (2021.01); A61M 60/515 (2021.01); A61M 60/531 (2021.01); A61M 60/562 (2021.01); A61M 60/585 (2021.01); A61M 60/88 (2021.01); A61M 60/148 (2021.01)
CPC A61M 60/585 (2021.01) [A61M 60/178 (2021.01); A61M 60/216 (2021.01); A61M 60/515 (2021.01); A61M 60/531 (2021.01); A61M 60/538 (2021.01); A61M 60/562 (2021.01); A61M 60/88 (2021.01); A61M 60/148 (2021.01); A61M 2205/18 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/3365 (2013.01); A61M 2205/3375 (2013.01); A61M 2205/50 (2013.01); A61M 2205/702 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for cardiac assistance of a patient, the method comprising using a control system with a cardiac assist device, the cardiac assist device comprising an implanted pump and an implanted graft, the pump having an impeller for providing blood flow through the pump, and the control system comprising one or more sensors implanted in the body at the heart or at the implanted pump or the graft of the cardiac assist device, wherein at least one of the one or more sensors is a motion sensor, the method including the steps of:
detecting, with the motion sensor, a motion of the pump within the body and thereby monitoring the motion of the pump relative to the body;
receiving signals by the control system from the motion sensor, the signals providing information on the motion of the pump relative to the body;
determining information about pump function, including vibrations caused by the impeller and blood flow patterns through the pump, using the signals from the sensor;
processing the signals received from the motion sensor in order to determine an acceleration signal associated with the cardiac assist device, in order to identify a pump malfunction or to identify complications to cardiac assist treatment;
identifying the pump malfunction or the complication based on the acceleration signal;
determining, based on an analysis of the acceleration signal, when the pump malfunction or the complication occurs; and providing, by the control system, an alert to a user or operator when the pump malfunction or the complication is identified.