Serial number should be (b)(4).Sorin group (b)(4) manufactures the s5 roller pump.The incident occurred in (b)(6).This medwatch report is filed on behalf of sorin group (b)(4).Sorin group (b)(4) received a report that the roller pump stopped during a procedure.There were no visual or audio alarms.The clinician power cycled and the pump regained flow.There was no report of patient injury.The investigation of the returned s5 roller pump ((b)(4)) could not reproduce and/or confirm the reported problem.During the electrical and functional tests as well as at the visual control of the pump, no problems or deviations could be detected.In a test run of about 100h with different interventions, master/follower function and rotational speeds under pcan-monitoring (monitoring of the direct data communication via can-bus), no problems or deviations could be detected.Although the problem could not be reproduced and no faults could be detected, we recommend the hkr 0325 processor board (item-no.90-305-620) and software version be updated to current manufacturing standards.This recommendation is based on sorin group standard manufacturing practice for returned units.A review of the dhr could not identify any concessions, deviations and nonconformities relevant to the reported failure.The root cause could not be determined, but this issue will be monitored for trends and if a trend is identified, corrective action will be recommended.
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