During an inferior vena cava (ivc) filter removal, in which the ivc filter was able to be hooked and the retrieval had begun, the gunther tulip vena cava filter retrieval set filter retrieval wire snapped after back tension was applied.The filter retrieval wire was able to be removed, and a new device was utilized to retrieve the ivc filter.According to the initial reporter, the patient did not experience any adverse effects due to this occurrence.
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Investigation - evaluation: a review of the complaint history, dimensional verification, device history record, instructions for use (ifu), manufacturing instructions, trends, quality control, functional testing, and visual inspection of the returned device was conducted during the investigation.The black inner catheter with the loop wire inside was returned.The loop wire had separated in the handle end in the transition between handle and shaft and both parts were severely damaged/curled.No damages were noted on the transition itself.A document-based investigation was performed.There is no evidence to suggest the finished product was not made to specifications.Review of the device history record of the finished product shows no nonconforming events.There were no other reported complaints for this lot number.Per the ifu, "excessive force should not be used to retrieve the filter." based on the information provided, examination of the returned product, and the results of our investigation; the exact reason for the separation cannot be determined.However, based on the curled portion of the device and because "back tension was applied", it is likely that cause was excessive force during the unsuccessful retrieval attempt.Per the risk assessment, no further action is required.Appropriate personnel have been notified and monitoring will continue to be performed for similar complaints.
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