This supplemental report is being submitted to provide the correction of the initial mdr and 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 ten (10) 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 "clogged auxiliary water channel¿ malfunction could not be identified, nor the type of material.There was no physical damage where the foreign material was found.Three attempts were made to obtain additional information regarding the cleaning disinfection and sterilization (cds) process; however no response was received, therefore it remains unknown if there were any deviations from ifu in reprocessing steps for the area foreign material remained.The event can be prevented by following the instructions for use: ifu states the detection method in gif/cf/pcf-190 series operation manual chapter 3 preparation and inspection.Ifu states the preventive measure in gif/cf/pcf-190 series reprocessing manual chapter 5 reprocessing the endoscope.Olympus will continue to monitor field performance for this device.
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