The subject device has not been returned to olympus medical system corp.(omsc) for investigation since it was discarded by user facility.The exact cause of the reported phenomenon could not be conclusively determined.The device history record for the lot indicated no abnormality with the event-related items.Based on the past similar cases, omsc assumed that the bleeding occurred due to the state of the tissue, but the cause of the event could not be identified.The instruction manual of the device has already warned as follows; when applying the current, do not use an excessive amount of conduction.Doing so could cause patient injury such as perforations and/or bleeding.When necessary, provide treatments to prevent perforations or bleeding from occurring after the procedure.Ensure that postoperative follow-ups are performed, and confirm that no abnormalities are found in the patient.
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