Patent ID: 11931562
Assignee: DUKE UNIVERSITY
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 10:
11. An apparatus comprising:
a left ventricular assist device (LVAD) comprising a pump;
at least one memory;
at least one transducer; and
at least one processor coupled to the at least one memory and the at least one transducer, the at least one processor configured to:
obtain, via the at least one transducer, a precordial sound recording including at least a first sound component corresponding to a heart and a second sound component corresponding to the LVAD;
filter at least a portion of the second sound component corresponding to the LVAD from the precordial sound recording to yield a filtered precordial sound recording;
determine, based on the filtered precordial sound recording, a presence or absence of at least one acoustic biomarker, the at least one acoustic biomarker comprising a pulse synchronized sound (PSS) acoustic biomarker associated with the LVAD during one or more periodic rotational speed oscillations of the pump;
adjust a rotational speed of the pump in response to the at least one acoustic biomarker being absent; and
repeat the steps of obtaining, filtering, determining, and adjusting until the at least one acoustic biomarker is present.