Although requested, neither the electronic data files from the device nor any additional patient or event information has been provided.The investigation remains open, and no root cause is known.Should additional information become available, a follow-up mdr will be submitted.
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The electronic data files from rmu-1000 serial number (b)(4) show the device had delivered a total of 21,270 compressions.Battery pack serial number (b)(4) was inserted into the unit on 3-1-17 and charged to 93% capacity.The unit sat until 5-10-17 when it was deployed for the presumed rescue attempt with battery pack serial (b)(4) which had discharged to 8% capacity at this point.The electronic data files shows multiple instances where the power button was repeatedly pressed for less than 1 second, which by design, shows the battery pack charge status.The user then inserted battery pack serial number (b)(4) (at 94% capacity) and continued the rescue where the device delivered a total of 1,751 compressions over the 45 minute rescue.During the entirety of this event, the device operated as designed - the compression parameters remained excellent, well within their tolerances.In this case it appears that the user failed to follow the manufacturer's instructions as to the proper maintenance and operation of this device, specifically; the user did not maintain the battery pack per the manufacturer's instructions and did not follow the manufacturer's instructions as to the steps required to power on the unit.
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