Apparatus for detection of and discrimination between tachycardia and fibrillation and for treatment of both
US5257621A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1993 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Jan 29, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/39622
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implantable cardioverter/defibrillator provided with method and apparatus for discrimination between ventricular tachycardia and ventricular fibrillation. The device is provided with two pairs of electrodes, each pair of electrodes coupled to processing circuitry for identifying a predetermined fiducal point in the electrical signal associated with a ventricular depolarization. The cumulative beat to beat variability of the intervals separating the two identified fiducal points, over a series of detected depolarizations is analyzed. The result of this analysis is used to distinguish between ventricular tachycardia and ventricular fibrillation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.