Fail safe detector in a cardiac monitor
US4115864A · kind A · utility
16Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 1977 |
| Grant date | Sep 19, 1978 |
| Priority date | — |
| Expiry date | Apr 27, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/28
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A fail safe detector in a cardiac monitoring system provides an alarm to indicate failure of the system to respond to cardiac waveforms supplied thereto from cardiac waveform sources. A time out circuit will produce the alarm if not periodically reset by pulses produced in response to measurement of cardiac waveforms. Means are provided for sensing whether cardiac waveforms are received from the sources to provide an alternate means of triggering periodic reset signals when no waveforms are received from the sources to prevent false alarms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.