This supplemental report is being submitted to provide additional information.The subject device was not returned to olympus medical systems corp.(omsc) for evaluation.Omsc reviewed the manufacture history (dhr) of the subject device and confirmed no irregularity.The exact cause of the reported phenomenon could not be conclusively determined.However, based upon the information from olympus europa se & co.Kg, there is the possibility that the reported phenomenon was attributed to the excessive force applied to the bending section due to device handling of the user.According to the previous investigation for similar case of similar device, it was known that the tip of the device was bent and pushed in with excessive force accessing to a lower renal calyx or a ureter, the bending tube might break.
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