Method and apparatus for correcting non-physiological variations in ECG signals
US5690118A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1996 |
| Grant date | Nov 25, 1997 |
| Priority date | — |
| Expiry date | Aug 28, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/366
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a method for correcting for non-physiological variations in ECG signals, signals recorded during a heartbeat, or a characteristic part of a heartbeat, are conditioned and digitized. Signal samples are stored in the form of an m.times.p matrix, where m is the number of samples and p is the number of leads used from measuring electrodes applied to the patient. The difference between this measuring matrix and a reference matrix is minimized by performing one or more of the operations translation, time synchronization, rotation and scaling of the measuring matrix. An apparatus for correcting for non-physiological variations in ECG signals includes a stage for conditioning signals, picked up by measuring electrodes applied to the patient, an A/D converter for digitizing the signals and a calculation unit. The calculation unit includes a storage unit for storing signal samples in the form of a m.times.p matrix, where m is the number of samples and p is the number of leads used from measuring electrodes applied to the patient, and for storing a reference matrix. The calculation unit is arranged to minimize the difference between the measuring matrix, formed from signal samples, and the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.