It was reported that during an inferior vena cava (ivc) filter removal, the hub came off the sheath of the gunther tulip vena cava filter retrieval set.At the time, the physician was "holding good tension" on the hub.The patient did not present with scarred, tortuous, or calcified anatomy.The günther tulip® vena cava filter was implanted on (b)(6) 2017 and, per the complainant, not imbedded or tilted in the patient's anatomy.The procedure was completed successfully with the complaint device.A section of the device did not remain inside the patient¿s body.The patient did not require any additional procedures due to this occurrence.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, and a visual inspection of the returned device were conducted during the investigation.The visual inspection of the returned device confirmed that the sheath flaring was found to be 6.5 mm, which is according to specification.A new fitting was screwed on the complaint sheath and tightened with enough force that the sheath cannot be pulled out of the fitting, even with a reasonable amount of pull.The two fittings were compared, and it was assessed that both the complaint fitting and test fitting were torqued equally.Based on these findings, the exact reason for the hub separation could not 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 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.We will continue to monitor for similar complaints.Per the risk assessment, no further action is required.This report is required by the fda under 21 cfr part 803.This report is based on unconfirmed information submitted by others.Neither the submission of this report nor any statement made in it is intended to be an admission that any cook device is defective or malfunctioned; that a death or serious injury occurred; or that any cook device caused or contributed to; or is likely to cause or contribute to a death or serious injury if a malfunction occurred.
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