Wearable cardioverter defibrillator (WCD) system evaluating its ECG signals for noise according to tall peak counts
US10960220B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Feb 22, 2018 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | May 25, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3987
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wearable cardioverter defibrillator system includes a support structure that a patient can wear. The system also includes electrodes that contact the patient, and define two or more channels from which ECG signals are sensed. A processor may evaluate the channels by analyzing their respective ECG signals, to determine which contains less noise than the other(s). The analysis can be by extracting statistics from the ECG signals, optionally after first processing them, and then by comparing these statistics. These statistics may include tall peak counts, amplitudes of peaks compared to historical peak amplitudes, signal baseline shift, dwell time near a baseline, narrow peak counts, zero crossings counts, determined heart rates, and so on. Once the less noisy signal is identified, its channel can be followed preferentially or to the exclusion of other channels, for continuing monitoring and/or determining whether to shock the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.