The manufacturer received information alleging a patient required hospitalization while using a ventilator.The ventilator was returned to the manufacturer for evaluation.The device passed all testing and was found to operate and alarm as designed.The ventilator's downloaded event logs were reviewed by the manufacturer.The device maintains the event logs in non-volatile memory.An event, as logged by the device, includes every keypress, alarm or failure of the device to remain within specifications.There were no events logged related to device performance or device malfunctions.If a device malfunction occurred, the event logs would have contained entries related to the malfunction.The reported event occurred on (b)(6) 2020.On the reported date of the event the ventilator alarmed for low exhaled tidal volume, patient disconnect and low minute ventilation at 5:27:24 local time.These alarms sounded for approximately 10 minutes before being acknowledged at 5:57:21 local time as evidenced by an alarm silence/reset keypress.The device was powered off at 5:57:22 local time.Based on test results and review of the downloaded event logs, the manufacturer concludes the ventilator operated and alarmed as designed.The reported event appears to have been caused by a patient circuit disconnect condition.
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