Patent ID: 11896381
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 7:
8. An invasive electrocardiography (ECG) system for displaying subwaveforms of the ST segment of an ECG waveform during measurement of the ECG waveform, comprising:
two or more electrodes placed directly on the surface of a beating heart of a patient that receive electrical impulses from the beating heart;
a detector that detects the electrical impulses from at least one pair of electrodes of the two or more electrodes and converts the electrical impulses to an ECG waveform for each heartbeat of the beating heart;
a processor that
receives the ECG waveform for at least one heartbeat from the detector, converts the ECG waveform to a frequency domain waveform, separates the frequency domain waveform into two or more different frequency domain waveforms, and converts the two or more different frequency domain waveforms into a plurality of time domain cardiac electrophysiological subwaveforms and discontinuity points between these subwaveforms of the ECG waveform,
compares the plurality of subwaveforms and discontinuity points to a database of subwaveforms and discontinuity points for cardiac electrophysiological signals of ECG waveforms for a plurality of known and normal and abnormal patients or to a set of rules developed from the database,
calculates a count of the one or more ST subwaveforms (STw), and
identifies an ST segment and one or more ST subwaveforms within the ST segment from the comparison; and

a display device that displays the ECG waveform with the one or more ST subwaveforms within the ST segment and displays the STw count for the at least one heartbeat of the beating heart.