Udi - not required for product code.Implanted date: device was not implanted.Explanted date: device was not explanted.Occupation- clinical engineer.The actual device was not returned; therefore, an evaluation of the actual device was unable to be conducted.Review of the manufacturing record and the product release decision control sheet of the actual product confirmed that there were not any indications of anomaly in them.A search of the complaint file found no other similar report with the involved product code/lot# combination.Ifu states: "adequate heparinization of the blood is required to prevent it from clotting in the system.(general precautions).Do not reduce heparin during circulation.Otherwise, blood clotting might occur.(general precautions)" based on the investigation result, no anomaly was found in the manufacturing record.As a cause of occurrence, since the event occurred approximately six hours after the start of extracorporeal circulation, it was likely that clots were generated during circulation due to the blood properties of the patient at the time of use, and the filter was obstructed.The exact cause of the reported event cannot be definitively determined based on the available information.(b)(4).
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