ICD with VF prevention

Details ICD with VF prevention ICD with VF prevention

2007-01-09

2007-01-09

Evanisko, George R. (Department: 3762)

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

Reexamination Certificate

active

10163591

ABSTRACT:
A cardiac stimulation device includes a sensing unit for monitoring the electrical activity of a heart and a controller configured to predict the onset of an arrhythmia of the heart. The controller calculates a statistical indicia relating to the immediate past four R—R intervals in the form of a sliding average thereof. Upon the prediction that the risk of the onset of an arrhythmia is high, the controller compares the current value of the R—R interval to the indicia. If the current value of the R—R interval exceeds the indicia by a predetermined amount, the controller causes a high amplitude pacing pulse to be delivered to a selected cardiac site in an attempt to forestall the initiation of ventricular fibrillation.

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