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During inspection, the insertion section was found to have an area of coating peeled off that measured at least 1 square millimeter.In addition, the bending section cover had chipped adhesive.The connecting tube had wrinkling and buckling which blocked passage of a forceps.Further, the angle wire was stretched, the channel tube had cracks and the image guide bundle showed breakage and stains.The device history record for the subject device was reviewed and no anomalies were found which could cause or contribute to the reported problem.A definitive root cause could not be determined.However, based on the results of the device evaluation and the available information, an investigation determined that the problem of coating peeled off measuring at least 1 square millimeter, was likely caused by stress of repeated use, external factors, or handling.The following statements are provided in the instructions for use for the subject device: inspect the control section and the camera section for excessive scratching, deformation, loose parts, or other irregularities.Confirm that the instrument channel port does not rotate or turn by attempting to rotate or turn the instrument channel port in a counterclockwise direction as shown in figure 3.21.If the instrument channel port is able to be rotated or turned, do not use the endoscope and return it to olympus for repair.(refer to figure 3.21).Visually inspect the rubber part around the instrument channel port.Figure 3.22 depicts the rubber part in a normal and abnormal condition.Lifting of the rubber part is abnormal.If the rubber part is lifted from the molding part as shown in figure 3.22, (abnormal condition) do not use the endoscope and return it to olympus for repair.(refer to figure 3.22) inspect the boot and the insertion section near the boot for bends, twists, or other irregularities.Inspect the external surface of the entire insertion section including the bending section and the distal end for dents, bulges, swelling, scratches, holes, sagging, transformation, bends, adhesion of foreign bodies, missing parts, protruding objects, or other irregularities.
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