Device history record was reviewed and nothing was found related to the reported event.Device log was reviewed but data is insufficient to confirm the reported event.The reported device was not returned to brézins for investigation and no information regarding any local repairs was provided.Device log was reviewed and events occuring on event reported date march 24th, 2023 were analysed.Several downstream pre-alarms and alarms confirms the reported event however after last downstream occlusion alarm at 16:18, there was no more pressure alarms during all the afternoon and following night, so it seems that issue on installation has been fixed, and the pump had no more false detection.Therefore, as we did not receive the reported device for further investigation, it's not possible to determine if occlusions alarms were due to utilization/environment or a false detection of the pump.Nevertheless, in case of pressure sensor abnormal drift, a technical error would be triggered, which is not seen in the device log.Despite several requests for the device return and attempts to collect additional information, we did not receive anything that would allow us to identify the actual root cause of this event.This complaint is considered as valid.The trend is normal.The reported risk is lower compared to the estimated risk.For this issue as per our local procedure, we initiated no action.
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