Manufacturing review: the device history records have been reviewed with special attention to the raw materials, subassemblies, manufacturing process and quality control testing.This lot met all release criteria.There was nothing found to indicate there was a manufacturing related cause for this event.This is the only event reported to date for this lot number and failure mode.Visual/microscopic inspection: as the device was not returned, an inspection could not be performed.Functional/performance evaluation: as the device was not returned, an evaluation could not be performed.Medical records review: as medical records were not provided, a review could not be performed.Image/photo review: as medical images were not provided, a review could not be performed.Conclusion: the device was not returned.Images were not provided.Medical records were provided and reviewed.A vena cava filter was successfully deployed.One month post filter deployment, multiple attempts were made to engage the embedded hook of the filter, however the filter was noted to be tilted posteriorly.Inferior vena cavogram demonstrated inferior migration of the filter.Additionally three years and three months post filter deployment, ct scan of the chest demonstrated acute bilateral pulmonary embolism.Based on the provided medical records, the investigation is confirmed for filter tilt, migration of the filter, and difficulties removing the filter.Additionally, the investigation can be confirmed for pe after filter implantation however the origin of the pe is unknown.Based upon the available information, the definitive root cause is unknown.Labeling review: the current ifu (instructions for use) states: warnings/potential complications: - movement, migration or tilt of the filter are known complications of vena cava filters.Migration of filters to the heart or lungs has been reported.There have also been reports of caudal migration of the filter.Migration may be caused by placement in ivcs with diameters exceeding the appropriate labeled dimensions specified in this ifu.Migration may also be caused by improper deployment, deployment into clots and/or dislodgement due to large clot burdens.- filter malposition, - filter tilt.- acute or recurrent pulmonary embolism.This has been reported despite filter usage.It is not known if thrombi passed through the filter, or originated from superior or collateral vessels.Note: it is possible that complications such as those described in the "warnings", "precautions," or "potential complications" sections of this instructions for use may affect the recoverability of the device and result in the clinician's decision to have the device remain permanently implanted.The information provided by bard represents all of the known information at this time.Despite good faith efforts to obtain additional information, the complainant / reporter was unable or unwilling to provide any further patient, product, or procedural details to bard.
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It was reported that a vena cava filter was deployed successfully, the reason for the filter deployment was not provided.No alleged deficiency with the device was reported.No other information regarding this event was provided.The patient status at this time is unknown.New information received: medical records were received and reviewed.Approximately one month post suprarenal filter deployment in a patient with history of deep venous thrombosis, the patient presented for filter retrieval.Inferior venacavogram demonstrated the filter was tilted posteriorly and migrated inferiorly.Multiple retrieval attempts were made from jugular and femoral access, but the filter was unable to be retrieved.The patient was hemodynamically stable at the conclusion of the procedure.Approximately three years three months post filter deployment, the patient experienced acute bilateral pulmonary embolism and was admitted.The patient was prescribed anticoagulation therapy and was discharged in good condition one day post admission.No additional information was provided in the medical records received.
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