The device was returned to the service center for evaluation.The user¿s complaint was confirmed.A visual inspection was performed on the received condition and noted the bending section skeleton tab was protruding (sticking out) from the bending section cover near the insertion tube area.The bending section cover was removed and the bending section skeleton is fully broken and separated with no signs of any sharp edges.Excessive broken fibers were noted on the image due to the broken bending section skeleton.The instruction manual states the following; ¿do not twist or bend the bending section with your hands¿.Additionally, the instructions for safe use manual indicate that, damage to the bending section would happen if excessive force was applied while angulating in the opposite direction if there was no movement from the bending section; this would occur more so in a narrow environment.Based on the investigation, the cause of the broken bending section skeleton is due to mishandling.
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