It was reported that a gunther tulip vena cava filter retrieval set was used to retrieve a celect platinum vena cava filter from an (b)(6) female patient.The filter was noted to have been implanted in the patient on (b)(6) 2017.The filter was able to be hooked; however, while attempting to advance the sheath over the filter with the coaxial sheath set, the filter hook bent over the snare (medwatch reference number will be provided when available) and the 11 fr sheath separated from its hub simultaneously.It was noted the tips of both sheaths were jagged/ bent/ cut.The physician attempted to remove the gunther tulip vena cava filter retrieval set to exchange it with a new set; however, the snare was unable to be removed due to the bent filter hook, and the set had to be completely dismantled to remove all of the parts.The snare was left inside of the patient's anatomy at this point.Another retrieval set was opened and flushed; however when the physician pulled on the hub, it separated from the sheath and was therefore unable to be used to continue the procedure (refer to medwatch 1820334-2017-04627).This did not make patient contact.Another manufacturer's sheath was utilized to successfully complete the filter retrieval.A section of the devices used did not remain inside the patient¿s anatomy.According to the initial reporter, the patient did not experience any adverse effects due to this occurrence.The patient was noted to experience slightly-above normal blood loss due to the quantity of devices changed out, however there was no concern from the physician, and no additional intervention was required.A normal post-venogram was observed.
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Investigation ¿ evaluation: a review of the dimensional verification, complaint history, device history record, instructions for use (ifu), manufacturing instructions, quality control, specifications, and a visual inspection and functional evaluation of the returned device were conducted during the investigation.The visual inspection of the returned device confirmed that the hub had slipped the flare of the introducer sheath.However, a similar test fitting was attached to the complaint sheath, and even after strong pull forces were exerted on the device, the fitting did not slip the sheath.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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