Manufacturing review: the lot number has been provided and the lot device history records have been reviewed.The lot met all release criteria.There was nothing found to indicate there was a manufacturing related cause for this event.This is the only complaint reported for this lot number and issue to date.Investigation summary: the device was not returned for evaluation and images were not provided.However, medical records were provided and reviewed.Approximately seven years post filter placement, a ct of the abdomen and pelvis revealed no acute process, diffuse fatty change of the liver and the filter in place.Therefore, based on the medical records, the investigation is inconclusive for the alleged occlusion as there was no identified deficiency with the filter provided in the medical records.Based upon the available information, the definitive root cause is unknown.Labeling review: the current ifu (instructions for use) states: warnings: 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.Potential complications: - caval thrombosis/occlusion.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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