Patent ID: 11883228
Assignee: CAMBRIDGE ENTERPRISE LIMITED
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 20:
21. An electronic stethoscope system, the system comprising:
an acoustic signal capture device to capture time series acoustic heart signal data from a patient;
a neural network to classify the time series acoustic heart signal data into a plurality of heart sound categories to provide time series sound category data, wherein the time series sound category data comprises, for each of a succession of time intervals, category probability data representing a probability of the acoustic heart signal for the time interval falling into each of the heart sound categories;
one or more heart state models each having a sequence of heart states;
a system to fit the time series sound category data to the one or more heart state models and determine timing data for the sequence of heart states and a confidence value for the model fit; and
an output to output one or both of a model fit indication dependent upon the confidence value and an indication of the timing data.