It was reported that during an inferior vena cava (ivc) filter retrieval, the gunther tulip vena cava filter retrieval set snare catheter was used to grab the filter hook, and the sheath was advanced over the apex of the filter in order to collapse the legs.The physician was unable to advance the sheath over the filter legs due to endothelialization, although several attempts were made using force.The tuohy-borst valve on the snare catheter then broke off.The physician removed the snare from the filter hook, and then proceeded to remove the snare catheter from the sheath.Upon removal, it was observed that the 11 fr outer sheath had also disconnected from the hub.The ivc filter was noted to have been in place for approximately three and a half months prior to the retrieval.A section of the device did not remain inside the patient¿s body.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, device history record, instructions for use (ifu), manufacturing instructions, quality control, specifications, and a visual inspection of the returned device were conducted during the investigation.The visual inspection of the returned device confirmed that the y-fitting had broken off as reported, and the flare was found severely damaged.The exact reason that the fitting slipped the catheter cannot be determined.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 was one other reported complaint 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.We will continue to monitor for similar complaints.Per the quality engineering risk assessment, no further action is required.
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