It was reported that during treatment the unit gave false bubble alarms.A getinge service technician investigated the unit on 2021-10-05 and could replicate the failure.The flow/bubble sensor was replaced to restore function.The technician performed safety, calibration, and functionality checks to factory specifications.Similar defective flow/ bubble sensors (fbs) were investigated by getinge life cycle engineering.Following causes were determined: -mechanical damage of sensor; -mechanical damage of cable connector.The most probable root cause for a mechanical damage of the sensor and cable connector was determined as external forces.Based on the investigation results the reported failure "false bubble alarm" could be confirmed.The occurrence rate related to the reported issue is currently being monitored as part of maquet cardiopulmonary¿ s trending program and additional investigations or corrections will be implemented in case of adverse trending.The occurrence rate was calculated for the reported failure and it was determined that this is not a systemic issue.Therefore, no remedial action is required.No harm to any person was reported.
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