Sorin group (b)(4) manufactures the sorin centrifugal pump 5.The incident occurred in (b)(6).This medwatch report is filed on behalf of sorin group (b)(4).Sorin group received a report that the audio alarm on the cp5 sometimes did not sound when the visual alarm was displayed.The problem was intermittent.There was no report of patient injury.A sorin group field service representative was dispatched to the facility to investigate.While at the facility, the service representative replaced the involved cp5 control panel, updated the system software and performed preventive maintenance.The replaced cp5 control panel was returned to sorin group (b)(4) for evaluation.Evaluation of the returned device was unable to reproduce the reported issue.The device performed as expected and no problems were found.A review of the dhr could not identify any concessions, deviations and nonconformities relevant to the reported failure.Without the ability to reproduce the reported issue, the root cause could not be determined.No trend has been identified.Sorin group (b)(4) will continue to monitor the market for trends related to this issue.
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