| US 7,463,922 B1 | ||
| Circuit and method for analyzing a patient's heart function using overlapping analysis windows | ||
| David E Snyder, Bainbridge Island, Wash. (US); and Thomas D Lyster, Bothell, Wash. (US) | ||
| Assigned to Koninklijke Philips Electronics, N.V., Eindhoven (Netherlands) | ||
| Filed on Jul. 13, 2000, as Appl. No. 9/615,280. | ||
| Int. Cl. A61N 1/39 (2006.01) | ||
| U.S. Cl. 607—5 | 9 Claims |
| 1. An external defibrillator which analyzes an ECG signal for an indication of ventricular fibrillation (VF), comprising:
a sensor operable to sense an ECG segment; and
a processor unit coupled to the sensor and operable to analyze a plurality of ECG sections of the ECG segment for an indication
of VF, each ECG section comprising digital samples of a continuous ECG heart waveform sensed during a window of time, wherein
a window of one ECG waveform overlaps a portion of the window of at least one other ECG waveform and the processor is operable
to analyze said window of the ECG waveform and said overlapping window of said ECG waveform to determine the indication of
said VF; and
a shock delivery circuit responsive to the indication of VF to deliver a shock.
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