This report is being submitted as follow up no.1 to update and to provide the completed investigation.It was initially reported that the actual device was available for evaluation; however, it was confirmed to no longer be available.Results 3252 is based upon the evaluation of user facility information and the investigation of the photograph; 213 is based upon investigation of the retention sample.Conclusion 4315 is based upon the evaluation of user facility information and the investigation of the photograph; 67 is based upon investigation of the retention sample.The actual device was not returned to the manufacturing facility for evaluation.However, two photographs were provided by the user facility.A review pf the photo showing the actual sample found that the purge line had been almost fractured off at the joint with the port on the oxygenator module.An inspection of the retention sample was performed.Visual inspection revealed no anomalies.The retention sample was filled with saline solution.With the blood outlet port side clamped, an air pressure of 2kgf/cm2 was applied to the blood phase from the blood inlet port.No leak was observed.The purge line tube was cut vertically at a point and the cut cross-section was inspected under magnification.There was no unevenness or deformation in the shape.The inside and outside diameters were confirmed to be comparable to those of the current product sample.Ifu states: do not use if the package or device is damaged (e.G.Cracked) or any of the port caps are off.Do not use an oxygenator that leaks.The involved device was not returned for evaluation.Therefore, the investigation was based on user facility information and evaluation of the unused samples.The retention sample was confirmed to be the normal product without having any anomaly which could relate to a fracture of the tube.It is likely that the actual sample was exposed to some shock force which exceeded the product's strength limit during transportation, storage or during the use by the customer.However, with no device return the exact cause of the reported event cannot be definitively determined based on the available information.
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