Failure description: the customer needed to increase the rpm by 1000 to achieve prescribed flow of 5lpm.No other parameters or factors seem to have changed.When it was observed that the rpm wouldn't be sufficient, they changed the circuit again and the third one seems fine.No noticeable clotting was observed after the circuit was rinsed.The customer inspected the circuit from every possible angles while it was running.Once it was removed, perfusion rinsed it and checked it again.They found nothing out of the ordinary.Investigation result: the product was not available for investigation.Therefore no laboratory investigation could be performed by the manufacturer.A review for similar complaints to be investigated already was performed and no similar complaints were found.Thus the failure could not be confirmed.The failure occurred during treatment and the product was directly involved in the incident.No root cause could be determined.The occurrence rate regarding the above complaint is below the acceptance rate.Thus, no remedial action required.The occurrence rate related to the reported issue is currently being monitored as part of maquet cardiopumonary¿s trending program and additional investigations or corrections will be implemented in case of adverse trending.
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