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The actual device has been returned to the manufacturing facility for evaluation.Visual inspection of the actual sample revealed no anomalies in its appearance.The actual sample, after having been rinsed and dried, was subjected to another visual inspection.No anomalies were noted.The actual sample was built into a circuit with tubes and bovine blood circulated in it and the pressure drop was determined at each flow rate.The obtained values were verified to meet manufacturing specifications.There were no anomalies which could cause an increase in the pressure in the actual sample.The bovine blood was circulated in the sample for 6 hours.There was no generation of occlusion which could cause an increase in the pressure in the actual sample.Visual inspection of the sample after the blood had been removed from it confirmed that there was no clot formation either in the oxygenator module or in the venous reservoir.A review of the device history record of the involved product code/lot# combination was conducted with no relevant findings.A search of the complaint file found no other report with the involved product code/lot# combination.The investigation result verified that the actual sample, after having been rinsed and dried, was the normal product with no issues.Based upon the available information, the cause for the reported event cannot be definitively determined.There are many complex clinical variables that may have affected the reportedly observed conditions during the procedure.However, there is no indication that the reported event was related to a product malfunction or defect.Terumo medical products (tmp) (importer) registration no.2243441 is submitting this report on behalf of ashitaka factory of terumo corporation (manufacturer) registration no.9681834.Exemption number e2015022.All available information has been placed on file in quality assurance at the manufacturing facility for appropriate tracking, trending and follow-up.
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