Manufacturing review: a manufacturing review was not requested as the lot number reported as unknown.Investigation summary: the device was not returned for evaluation.Medical records were provided and reviewed.Approximately, seven years three months of post deployment, gunther tulip filter was placed above the old filter.There was massive clot throughout the venous structures with extension into the superior vena cava.Large clot extends through the previously placed filter and also to an area of approximately 3 cm cephalad to the filter.After, twenty days, the patient presented for filter removal, under real time ultrasound guidance with recording, a micro-puncture set was used to access the right internal jugular vein.5-french vascular sheath was placed, and a 5-french vert catheter was then advanced into the inferior vena cava.Venography demonstrates occlusive thrombus present within the lower inferior vena cava below the renal veins.The bilateral renal veins are patent.Both filters are imbedded within the thrombus.Occlusive thrombus present within the distal inferior vena cava with filter was in bed within it.Unable to remove the upper filter because of the thrombus.Around, three years and nine months later, computed tomography of the abdomen without contrast revealed 2 adjacent filters were present, the more caudad filter was immediately adjacent, with slight rightward tilt of apex abutted the right anterior inferior vena cava wall.No strut fracture.Multiple struts extend through the lumen, the greatest extend was approximately 1 cm to the left and projected over right side of aorta.Therefore the investigation is confirmed for the perforation of the inferior vena cava (ivc), filter tilt, retrieval difficulties and occlusion of the inferior vena cava (ivc).Additionally, it can be confirmed that the patient experienced pulmonary embolism and thrombus above the filter post deployment.However, the relationship to the filter is unknown.The definitive root cause could not be determined based upon available information.Labeling review: the review of the instructions for use, indications, warnings, precautions, cautions, possible complications, and contraindications showed that the product labeling is adequate.Section a through f - the information provided by bd 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 bd.
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