External defibrillator
US9950182B2 · kind B2 · utility
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Key dates
| Filing date | Feb 18, 2016 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Feb 18, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2218/10
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An external defibrillator estimates the phase of ventricular defibrillation (VF) by deriving, from an ECG exhibiting VF, at least one quality marker representing the morphology of the ECG and, therefore, the duration of the VF. The duration of the VF is calculated as a function of the value (s) of the quality marker (s). The quality marker (s) may comprise any one or more of the median slope of the ECG, the average slope of the ECG, the ratio of the power in relatively high and low frequency bands of the ECG, and a measure of the density and amplitude of peaks in the ECG, over a predetermined period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.