Automatic external cardioverter/defibrillator with cardiac rate detector and method of operating the same
US6246907A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1999 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Dec 1, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3925
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An external defibrillator includes a detector used to detect a life threatening condition of a patient, a controller operating the defibrillator automatically and a therapy delivery circuit that delivers appropriate therapy. The defibrillator is attached to a patient and is adapted to monitor the patient and when a life threatening condition is detected, to apply therapy automatically. An averaging scheme is used to determine a current cardiac rate by taking a first average of the intervals between a preset number of successive cardiac events, establishing a differential between this average and the intervals, dropping the interval corresponding to the largest differential. In this manner, the effects of over- and undersensing are eliminated or at least reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.