The reference device was returned to service center for an evaluation.A visual inspection was performed and found the bending section skeleton protruding out from the cover.The bending section damage is approximately 70mm from the distal end side, which is also causing a leak.The bending section cover was removed in order to reveal the extent of the damage.Upon removal of the cover, it was confirmed that the bending section skeleton is fully separated producing protrusion near the insertion tube side.The bending section support pins are still intact and not lifting.Further findings include a burn on the distal end body, leak from the distal end body, and broken fibers scattered throughout the image.Based on the evaluation, the likely cause of the bending section skeleton breaking is due to excessive force and/or stress attributed to mishandling.Followed up with the user facility in writing to obtain additional information regarding the reported event was performed multiple times with no additional information to date.The instruction manual states the following warnings statements; ¿do not twist or bend the bending section with your hands.Equipment damage may result¿.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 in a narrow environment".
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