The subject device was returned to olympus medical systems corp.(omsc) for evaluation.The evaluation found following failures: although a part of the adhesive of bending rubber on the control section side remained, it was almost peeled off.The adhesive on the distal end side was scratched.The distal end and the control section were damaged.The part of the coating over the ett was peeling off and there were scratches on the ett.Omsc reviewed the manufacture history of the subject device and confirmed no irregularity.The above damages of the subject device could be caused due to physical stress.It is considered that the fragments could fall off due to physical stress applied by interference with an ett.The operation manual of the subject device has already described as follows: if the ett cannot be easily slid into place over the insertion tube of the endoscope, do not use it.If the ett is forced into place, the insertion tube may be damaged or it may be impossible to remove the ett from the endoscope.Never use a damaged ett.Patient injury and/or equipment damage may result.The angulation control lever should not be operated when the bending section is inside of the ett.
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