The affected device was examined onsite by biomed and a pneumatic controller board was identified which was not plugged in correctly.Furthermore, it was confirmed that the device had generated a device error.The investigation at the manufacturer¿s site was based on the provided description of event as only available information.Considering the device error, it could be verified that the device very like performed a warm start.In the event of a warm start, audible alarms and visual messages are generated in order to alert the user of this situation.The device briefly powers off and then back on.A single successful warm start lasts approximately 8 seconds.The emergency-breathing valve would open allowing for spontaneous breathing; however, manual ventilation with an alternate device may be considered necessary.Reportedly re-plugging in the pneumatic controller board correctly remedied the issue.A one-day test run was performed as well without further deviations.The number of similar cases, related to the same root cause, is within the expected range of the respective risk assessment and thus accepted.
|