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 of the reported endoscope repressor (oer) water piping not being disinfected after filter preplacement could not be determined, however, it is likely that the issue was the result of user error/ not properly following the ifu recommendations.The event can be detected/prevented by following the instructions for use which state: 4.3 mrc check setting.When this setting is activated and the mrc check result is not input before start of the following process, the reprocessor inhibits the start of the following process and message screen is displayed.- reprocessing.- leaking scope decontamination.- water line disinfection.- self-disinfection & water sampling.- detergent line disinfection.- alcohol line disinfection.Note: this setting is provided to prevent forgetting of the input of the mrc check result.The mrc check result can be input even when this setting is disabled.7.7 water line disinfection: disinfection of water line is required in the following cases.¿ before using this reprocessor for the first time (after loading of the water filter).¿ immediately after replacement of water filter.¿ before using the reprocessor if it has not been used for more than 14 days.¿ whenever bacteria in the water line is identified.The disinfectant solution stored in the reprocessor is used for disinfection of the water line.Olympus will continue to monitor field performance for this device.
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