This supplemental report is being submitted to provide additional information.The exact cause of the reported event could not be conclusively determined, because the device has not been returned to olympus medical systems corp.(omsc).The instruction manual of the device provides preventive measures against the reported failure mode.Omsc concluded that the reported event may have been caused by damage to the ultrasound acoustic lens due to external forces during transportation, storage, use and cleaning, etc.The reported failure mode by observing the instruction manual of this device can be prevented, so it may be caused by the user's handling.Device history record (dhr) review indicates that the product was manufactured and tested in accordance with all applicable procedures and met all final product release criteria.If additional information becomes available, this report will be supplemented.
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