Defibrillator ECG interpreter
US4919144A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1988 |
| Grant date | Apr 24, 1990 |
| Priority date | — |
| Expiry date | Feb 26, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/903
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A defibrillator electrocardiogram (ECG) interpreter for indicating whether to treat a patient with a defibrillator. A sequence of digitized samples from a patient's ECG is periodically tested to identify asystole, noise, no-treat and treat conditions. A single result then is stored for each period. The treat result occurs when a patient is experiencing ventricular fibrillation or high rate ventricular tachycardia. The current result and up to two of the results corresponding to immediately previous ECG sample periods are then compared to derive a system output. In an automatic defibrillator embodiment, the system output causes defibrillation automatically for a treat output. In a semiautomatic defibrillator embodiment, the system output causes a message to be presented to an operator. The operator then makes the decision whether to defibrillate based upon the system output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.