Electronic pacemaker testing device
US5209228A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1990 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Oct 26, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3706
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.