Patent ID: 6076018
Filing Date: 2000-06-13
Classification: A61N,H02J

Abstract:
An apparatus for regulating the output in a battery powered electrotherapy device comprising:a control means which activates a switched inductor by connecting said switched inductor to a battery supply such that the battery supply outputs a charging pulse to the switched inductor;wherein said control means deactivates the switched inductor causing said switched inductor to deliver a charge from the switched inductor to a storage capacitor, said deactivating of the switched inductor causing voltage to build up on the storage capacitor;wherein said control means monitors the voltage built up on the storage capacitor using a voltage divider connected to a voltage comparator until the voltage on the storage capacitor reaches a predetermined voltage at which point it delivers a capacitor discharge pulse from the storage capacitor to an output stage;wherein said control means controls the width and frequency of the battery supply charging pulses so that battery discharge pulses are made at lower amperage than the capacitor discharge pulses; andthe output stage comprises electrodes adapted to transmit electrotherapy pulses to the body of a patient.