Device evaluation: the returned pump underwent a series of investigative assessments to verify the reported issue including pathway priming and flow testing.Based on the results of the investigation, the reported issue was confirmed.The cause of the confirmed failure was undetermined as the valves worked per specification.Although the cause could not be determined, it is probable that it could be related to an obstruction in the flow path related to drug or drug precipitant, which may have cleared during investigation/destructive testing.(b)(4).
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