It was reported that while in use on a patient, an 840 ventilator generated a severe occlusion alarm.The patient was removed from the ventilator and placed on an alternate ventilator.The patient was not harmed or injured as a result of the event.The customer indicated that the exhalation filter was wet and there was water in the vial.A technical support engineer (tse) recommended obtaining the alarm log before running self-testing on the device.Medtronic/covidien was not authorized to service the device.
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