Electronic pacemaker testing device

Details Electronic pacemaker testing device Electronic pacemaker testing device

1990-10-26

1993-05-11

Kamm, William E.

Surgery

Truss

Pad

A61N 137

Patent

active

052092283

ABSTRACT:
An electronic test instrument for rapid comprehensive verification of correct operation of medical pacers. This portable microprocessor-based test instrument includes a device for measuring and displaying pacer characteristics including pacing rate, pulse duration, pulse amplitude, sensitivity, sensed refractory interval, stimulus refractory interval, atrio-ventricular delay, D.C. leakage, susceptibility to A.C. interference, frequency response and battery drain. The test instrument includes a device for selecting each test and entering associated parameters, a device to convert the analog pacer pulses to digital values for detection and measurement, a device to generate variable amplitude test waveforms and apply them to a medical pacer at a specified rate or at a specified delay from a previous pacer pulse or with a specified delay between two test waveforms and a device for displaying test results. Sensed and stimulus refractory intervals are determined in minimal time using a unique binary search strategy which continually halves the range of possible refractory intervals until the desired interval is determined.

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