Method and apparatus for providing hexaxial ECG display
US3983867A · kind A · utility
Inventor
Key dates
| Filing date | Sep 29, 1975 |
| Grant date | Oct 5, 1976 |
| Priority date | — |
| Expiry date | Sep 29, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/308
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A 360.degree. hexaxial reference system orthogonal display of voltage versus time generated in response to heart activity is directly provided with the display having 30.degree. angular separation between adjacent electrode pair potential difference electrocardiographic sampled voltages. Both Einthoven bipolar leads and augmented V unipolar leads, each of which comprise an electrode pair, are disposed at predetermined locations with respect to the arms and legs of the body of a patient whose heart activity is to be diagnosed. Sequential selection of the electrode pairs one-by-one, from the plurality of bipolar and unipolar electrode pairs together with selective polarity reversal of the potential differences associated with the various leads for the electrode pairs is accomplished to provide the 30.degree. angular separation between adjacent electrode pair potential differences for directly providing the 360.degree. hexaxial reference system orthogonal display. The display which respectively comprises lead I, lead AVR with the polarity reversed, lead II, lead AVF, lead III, lead AVL with the polarity reversed, lead I with the polarity reversed, lead AVR, lead II with the polarity r…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.