Patient information was not provided.Livanova (b)(4) manufactures the centrifugal pump 5.The incident occurred in (b)(6), united states.A livanova field service representative was dispatched to the facility to investigate the device.The service representative was not able to confirm the reported issue.The affected part has been replaced on precaution.Functional verification testing was completed without further issues and the unit was returned to service.The affected part was returned to livanova deutschland for a detailed investigation.The investigator could reproduce the reported issue only once even though intensive testing.As the issue could be reproduced only once, a root cause could not be determined.A review of the dhr could not identify any deviations or nonconformities relevant to the issue.
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