This supplemental report is being submitted to additional information.Olympus medical systems corp.(omsc) reviewed the manufacture history (dhr) of the device and confirmed no irregularity.The exact cause could not be determined, but there was the possibility that the user applied the excessive bending and tensile stress to the subject device, it might cause the stretch of the angle wire, consequently the up angle might not be up to standard.The exact cause of the reported event could not be conclusively determined.
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