Process and device for signaling malfunctions of a respirator
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United States of America Patent
Stats
-
Aug 30, 1988
Grant Date -
N/A
app pub date -
Apr 13, 1987
filing date -
Apr 15, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This invention relates to the monitoring of the correct operation of a respirator with single source of energy constituted by a cylinder of pressurized oxygen, to which is annexed a device for connection to a patient. Such monitoring is effected with the aid of a pneumatically operating device which comprises a comparator with adjustable threshold, connected to the mask for connecting to the patient and followed by an amplifier whose output signal takes the binary logic level 1 during the time when the insufflation pressure in the mask is greater than said threshold, and takes the other binary logic level 0 in the opposite case, and a circuit for processing this signal, which triggers off an alarm device if the duration of the time intervals when this latter is at level 1 is too long or too short with respect to a predetermined normal value.
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