US 11,752,324 B2
Monitoring of a cardiac assist device
Per Steinar Halvorsen, Oslo (NO); Andreas Espinoza, Hovik (NO); and Erik Fosse, Oslo (NO)
Assigned to CARDIACCS AS, Oslo (NO)
Appl. No. 14/901,023
Filed by OSLO UNIVERSITETSSYKEHUS HF, Oslo (NO)
PCT Filed Jun. 27, 2014, PCT No. PCT/EP2014/063746
§ 371(c)(1), (2) Date Dec. 27, 2015,
PCT Pub. No. WO2014/207225, PCT Pub. Date Dec. 31, 2014.
Claims priority of application No. 1311494 (GB), filed on Jun. 27, 2013.
Prior Publication US 2017/0049945 A1, Feb. 23, 2017
Int. Cl. A61M 60/538 (2021.01); A61M 60/515 (2021.01); A61M 60/585 (2021.01); A61M 60/178 (2021.01); A61M 60/216 (2021.01); A61M 60/531 (2021.01); A61M 60/88 (2021.01); A61M 60/562 (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)] 6 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 a graft, and the control system including a sensor implanted in the body at the heart or at the implanted pump or the graft of the cardiac assist device, wherein the sensor is a motion sensor, the method further including the steps of:
detecting, with the 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 an 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, the processing further comprising determining a presence or absence of a third harmonic in the acceleration signal;
providing an indication of a thromboembolism when the third harmonic in the acceleration signal is determined to be present; and
guiding medical treatment of the patient in an acute phase or a follow-up phase based on the indication of the thromboembolism.