Livanova (b)(4) manufactures the s5 roller pump.The incident occurred in (b)(6).This medwatch report is being filed on behalf of livanova (b)(4).A livanova field service representative was dispatched to the facility to investigate.The service representative was unable to reproduce the reported issue.The pump was tested and was found to be functioning correctly.A serial readout was performed and sent to livanova (b)(4) for analysis.Analysis of the readout identified recorded alarms due to ¿cover open¿ and ¿master/slave¿ settings.It was suggested to the service representative that the pump cover be replaced, and the cardioplegia master/slave settings be removed.The service representative returned to the facility to replace the pump cover and found that it was broken at the hinge area.The service representative found that the cardioplegia pump was set as slave to the arterial pump, so if the arterial pump stopped the cardioplegia pump would also stop and not pull air across the membrane.The setting was not removed, as the setup was how the perfusionist wanted it.The service representative cleared the nvmem on the pumps and tested according to the service manual.The system was found to be working properly and the unit was returned to service.No further occurrences have been reported.As the issue could not be reproduced, a root cause was not identified.
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