The device was returned to olympus for evaluation and the customer's allegation of ¿internal defects of channel¿ was not confirmed.The device evaluation found the nozzle had foreign objects due to insufficient cleaning.Additionally, due to wear of the angle wire, bending angle in up direction did not meet the standard value.Due to wear of the angle wire, the play of up/down knob was out of the standard value.And the adhesive on the bending section cover had a chip.The customer later confirmed that they cleaned, disinfected, and sterilized the product before returning it for evaluation, and that they were not sure what the foreign material adhered to the scope¿s nozzle was.Additionally, it was confirmed there was no delay in the start of pre-cleaning, the customer did not confirm if they¿ve flushed the nozzle with water and air, the customer did not confirm if there were any abnormalities in the accessories used for reprocessing.They did not confirm whether they¿ve presoaked the endoscope in detergent solution, they wiped the nozzle with clean lint-free cloths/brushes/sponges, and they flushed the air/water nozzle with detergent solution.There were no other concerns regarding the reprocessing.A review of the device history record found no deviations that could have caused or contributed to the reported issue.It has been over 2 years since the subject device was manufactured.Based on the results of the investigation, the foreign material was unable to be specified and a definitive root cause could not be established.A device history review (dhr) revealed of the subject device was reviewed and it was confirmed that the device was shipped in compliance with specifications.This issue is addressed in the instructions for use (ifu): the subject event can be detected and prevented by implementation in accordance with the ifu below.Instructions, operation manual for gif-1200n chapter 3 ¿preparation and inspection¿ describes how to detect the subject event.Instructions, reprocessing manual for gif-1200n chapter 5 ¿reprocessing of the endoscope (and related reprocessing accessories)¿ describes how to prevent the subject event.Olympus will continue to monitor the field performance of this device.
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