This supplemental report is being submitted to provide the legal manufacturer's final investigation.Additional information: h3 and h6.A review of the device history record found no deviations that could have caused or contributed to the reported issue.It has been over eleven (11) years since the subject device was manufactured.A definitive root cause was not identified, however based on the results of the investigation, the probable cause of the "air/water-cylinder, scope-cylinder and light guide-lens" malfunctions would likely be related to the reprocessing that was not conducted properly due to leakage from the biopsy channel.The event can be prevented by following the instructions for use which state: ifu states detection methods in gif-h185 operation manual chapter 3 preparation and inspection.Ifu states prevention measures in gif-h185 reprocessing manual chapter 5 reprocessing the endoscope.Three attempts were made to obtain additional information regarding the reported event, but no response was received from the customer.Olympus will continue to monitor field performance for this device.
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