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This report is being supplemented to provide additional information, based on the legal manufacturer's final investigation.A review of the device history record found no deviations, that could have caused or contributed to the reported issue.Based on the results of the investigation, a definitive root cause could not be established.The suggested phenomenon was confirmed.However, the foreign material that was adhered to the objective lens was unable to be further specified.Moreover, no physical damage of the device was confirmed, where the foreign material had remained.Nor was any obvious deviation of reprocessing.Therefore, the cause of the remaining foreign material could not be presumed from the obtained information.As the methods for procedure in line with the reprocessing manual below, we determined, the suggested event can be detected/prevented: the instruction manual operation manual, "urf-p7, chapter 3: preparation and inspection", describes the methods for detection.The instruction manual reprocessing manual, "urf-p7, chapter 5: reprocessing the endoscope", describes the methods for prevention.Olympus will continue to monitor field performance for this device.
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