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Investigation ¿ evaluation: a review of the complaint history, device history record, drawing, manufacturing instructions, quality control, and a visual inspection of the returned device were conducted during the investigation, and no issues were found related to the reported issue.The visual inspection of the returned wire confirmed that the flare was within specifications, and no damage to the cap thread connection was noted.A leak test showed leakage at the threads where they connect to the syringe, although no damage was noted on the threads.In addition, the id of the end hole accepts a 0.042" pin gage, which is within manufacturing specifications.The diameter of the shaft flare is 0.150" which is also within manufacturing specification of 1.109" to 0.152".While the adequacy of the glue bond cannot be definitively determined from the used device, the flare was within specifications and no damage to the cap thread connection was noted.Additionally, a document based investigation evaluation was performed.There is no evidence to suggest the product was not made to specifications.A review of the device history record showed no nonconforming events which could contribute to this failure mode.It should be noted there were no other reported complaints for this lot number.Based on the information provided, the examination of the returned product, and the results of our investigation, a definitive root cause could not be determined.Per the quality engineering risk assessment, no further action is required.Cook medical has notified the appropriate personnel and will continue to monitor this device via the complaints database for similar complaints.
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