This supplemental report is being submitted to provide the results of 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.It has been over 05 years since the subject device was manufactured.The device was not returned to olympus for inspection, and the customer's complaint of disinfectant concentration checks not performed was confirmed.Based on the results of the investigation, it is likely the user did not read the instruction manual carefully and that this occurred due to the user's error in controlling the concentration of the disinfectant solution.However, a definite root cause that led to the malfunction could not be determined.The event can be [detected/prevented] by following the instructions for use which state: 3.9 checking the disinfectant solution concentration level.When cleaning and disinfecting endoscopes, be sure to use an acecide checker or portable concentration checker to check that the disinfectant solution has an effective concentration.Be sure to replace the disinfectant before it loses its disinfecting effect.Warning when cleaning and disinfecting endoscopes, be sure to use an acecide checker or portable concentration checker to check that the disinfectant solution has an effective concentration.Be sure to replace the disinfectant before it loses its disinfecting effect.Olympus will continue to monitor field performance for this device.
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