Livanova (b)(4) manufactures the centrifugal pump 5 (cp5).The incident occurred in (b)(6).A livanova field service representative was dispatched to the facility to investigate.The service representative was not able to confirm the reported issue.Subsequent functional verification testing was completed without issues and the unit was returned to service.Further investigation revealed that the reported issue is not a malfunction.The device worked as intended.A review of the dhr did not identify any deviations or non-conformities relevant to the reported issue.Device not returned.
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