This supplemental report is being submitted to provide additional information.The subject device was not returned to olympus medical systems corp.(omsc) for evaluation but returned to olympus china.From the acceptance inspection results by olympus china, omsc confirmed the following.Water leakage from a rubber.The a rubber and the bending tube are damaged.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 past similar cases, there was the possibility that the reported phenomenon was attributed to the following causes.The breakage of the bending tube.The user performed an operation that applied excessive force to the bending section.When the user inserted the device into the ureter or the inferior calyx, the bending section was bent.And then, the user kept bending the bending section and pushed it with excessive force.
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