The scope was returned to olympus and evaluated.The reported problem was confirmed.A leak was found at the a-rubber.In addition, excessive broken fibers and a broken skeleton ring were found.Based on the results of the device evaluation and similar reported complaints, the most likely cause of the reported event can be attributed to user handling or technique.The device instructions for use contains the following statements: caution: "do not operate the angulation control lever with excessive force in a narrow space to the opposite direction from the bending direction while the distal end of the endoscope is not moved.The bending section may be damaged.Check the tip position of the endoscope and the shape of the bending section using fluoroscopy, etc.Do not insert the insertion tube with excessive force and twist." "do not insert the insertion tube with excessive force into the ureter or calix.The bending section may be damaged.".
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