Method and apparatus for signal averaging and analyzing high resolution P wave signals from an electrocardiogram
US5840038A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1997 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | May 29, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/353
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for signal averaging and analyzing high resolution P wave signals from an electrocardiogram. The method and apparatus for averaging the P wave portion of ECG signals includes sensing human ECG signals having at least a QRS portion and a P wave portion, detecting the QRS portion of the ECG signals, suppressing the QRS portion of the ECG signals, generating a P wave detection function from the wave portion of the ECG signals, cross correlating the P wave portions of the ECG signals and averaging the cross correlated P wave signals. The method and apparatus for analyzing high resolution P wave signals includes averaging at least a portion of the ECG signals, filtering the averaged signals, deriving the vector magnitude (VM) of the filtered averaged signals, determining the base noise level, and setting the P onset and P offset of the VM signals above the noise level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.