The device was returned to olympus medical systems corp.(omsc) for evaluation.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.Omcs investigated the actual device and stent and confirmed the following; there were no abnormalities such as scratches or clogging of foreign material inside the instrument channel port.There was no abnormality inside the instrument channel and in the branch inside the instrument channel port.The appearance of the stent had bent flaps, wrinkles, and deformation.From the results of checking the actual device, omsc determined that the reported event was not caused by an abnormality in the device.If additional information becomes available, this report will be supplemented.
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