This device is class1 product so that 510k# is blank.We checked the returned unit and confirmed that the image guide fiber bundle (cfb) smudge on fiber image.Based on the result, we concluded that it was caused due to the insufficient reprocessing at the facility on the image guide fiber bundle (cfb).In addition, we confirmed that the insertion flexible tube (ift) coating damage, and the control body corroded; however, they are not the main cause, and/or irrelevant to the alleged complaint.Based on the technical report "hr-rpt-0586 (image failure)" and/or the risk analysis results, it was evaluated to submit mdr.
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