Livanova (b)(4) manufactures the s5 roller pump.The event occurred in (b)(6).(b)(4).A livanova field service representative was dispatched to the facility to investigate.The service representative tested the device and was unable to reproduce the reported malfunction.Visual inspection identified build up on the gasket of the touch screen that could be caused by cleaning the screen with wipes.The service representative advised the customer to clean the touch screen with a dry cloth only.As a precaution, the touch screen was replaced.After service, it was confirmed by the perfusionist that the system worked within specifications.The customer kept the old touch screen.No further issues have been reported for this unit.As the issue was not reproduced and the customer kept the replaced touch screen, a root cause could not be determined and corrective actions were not identified.A review of the dhr did not identify any deviations or non-conformities relevant to the reported issue.Device evaluated on site by livanova technician.
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