Patent ID: 11938334
Assignee: WEST AFFUM HOLDINGS DAC
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A

Claim 0:
1. A wearable cardioverter defibrillator (WCD) system for an ambulatory patient, comprising:
an energy storage module configured to store an electrical charge;
electrodes;
a support structure configured to be worn by the ambulatory patient so as to maintain at least some of the electrodes on a body of the ambulatory patient, at least three distinct channels being defined by distinct respective pairs of at least some of the electrodes;
a measurement circuit configured to sense three electrocardiogram (ECG) signals of the patient from the three channels respectively, and to render values therefrom; and
a processor configured to:
receive the values of the ECG signals,
isolate segments of the received ECG signals,
measure heart rate values of the ECG signal segments,
calculate differences of the heart rate values among themselves,
compute heart rate agreement statistics of the ECG signal segments, the heart rate agreement statistic of a particular one of the ECG signal segments computed from the calculated differences of the heart rate value of the particular ECG signal segment from heart rate values of others of the ECG signal segments,

determine that the heart rate agreement statistic of a first one of the ECG signal segments that was sensed from a first one of the channels, is larger than the heart rate agreement statistic of a second one of the ECG signal segments that was sensed from a second one of the channels,
and responsive to the heart rate agreement determination, determine whether or not a shock criterion is met, the determination made from an ECG signal segment received from the first channel preferentially than from an ECG signal segment received from the second channel, and
cause, responsive to the shock criterion being met, at least some of the stored electrical charge to be discharged via at least one of the electrodes through the ambulatory patient so as to deliver a shock to the ambulatory patient.