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Investigation - evaluation.A review of the complaint history, device history record, documentation, drawing, instructions for use (ifu) manufacturing instructions, quality control, specifications, as well as a functional test, visual inspection and dimensional verification of the returned device was conducted during the investigation.One partial unlocked 8.5fr mac-loc catheter was returned for evaluation.The returned portion of the device was comprised of the mac-loc hub, connector cap and approximately 5cm of catheter tubing ending with a cut.The suture string also appeared to be cut.Biological matter was present on the device with no additional surface damage noted.A leak test was conducted and confirmed the presence of a leak between the connector cap and catheter tubing.Tug and twist tests revealed that the proximal assembly was secure.Upon removal of the connector cap, the suture string appeared to be normal within the threads.The flare appeared very damaged, but due to the compression of the flare within the cap and the potential for damage upon removal, it cannot be determined if the flare was manufactured to specifications.Additionally, a document based investigation evaluation was performed.Based on the current review of documentation, inspection activities are in place to prevent the release of nonconforming product related to the reported failure mode.A review of the device history record was conducted and showed no relevant nonconformances in lot 8965863 that could have contributed to the reported failure mode.It should be noted that there were no other complaints reported for this lot number.Based on the information provided, examination of the returned product and the results of our investigation, a definitive root cause could not be established.Appropriate measures have been taken to address this failure mode.Per the quality engineering risk assessment no further action is required.Cook will continue to monitor for similar complaints.This report is required by the fda under 21 cfr part 803 and is based on unconfirmed information submitted by others.Neither the submission of this report nor any statement contained herein is intended to be an admission that any cook device is defective or malfunctioned, that a death or serious injury occurred, nor that any cook device caused, contributed to, or is likely to cause or contribute to a death or serious injury if a malfunction occurred.
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