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This supplemental report is being submitted to provide the results of the legal manufacturer's final investigation.Additional information added to fields: d8, d9, h2, h3, h4 and h6.A review of the device history record found no deviations that could have caused or contributed to the reported issue.It has been over five (5) months since the subject device was manufactured.Based on the results of the investigation, and for both events, it is likely the following led to the malfunction: it was likely that the friction between the outer tube and the needle increased by the following factors.The needle extended/retracted while the tube was coiled in inspection of operation.The slider was abruptly pushed.Angle of the distal end of the endoscope.The event can be detected and/or prevented by following the instructions for use which state: straighten out the instrument before inspecting it.The instrument can be damaged if it is coiled while the handle is operated.Operate the slider slowly, otherwise the tube could buckle.Do not coil the insertion portion with a diameter of less than 15 cm.This could damage the insertion portion.When inserting the instrument into the endoscope, retract the needle into the sheath, hold the instrument close to the biopsy valve, and keep it as straight as possible relative to the biopsy valve.Otherwise, the instrument could be damaged.Insert the instrument slowly.Abrupt insertion could damage the endoscope and/or instrument.Stop using the instrument if the insertion portion bends excessively during use.This could result in malfunction, such as failing to extend the needle or inject a fluid.Olympus will continue to monitor field performance for this device.
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