Manufacturing review: a lot history review was performed.This is the only complaint to date for this lot number.Therefore, a device history record review is not required.Investigation summary:the device was not returned for evaluation.Medical records were provided and reviewed.Bard denali filter was deployed into the suprarenal segment of the inferior vena cava just below the confluence of the hepatic veins, for a patient with inferior vena cava thrombus.Appropriate positioning and deployment were confirmed with a post-deployment vena cavogram.Eventually, after two months and twenty-five days later, the patient reported to the hospital with acute onset right-sided chest pain.A ribs unilateral 2 views were revealed an inferior vena cava filter was projected at the level of t11-t12.Approximately, after one year and four months, the patient experienced chest pain.A chest single view was revealed a partially visualized inferior vena cava filter with its tip approximately 2 cm below the level of the right hemidiaphragm.Around, ten months later, a chest 2 views posteroanterior and lateral was revealed stable linear metallic structure at the right hilum compatible with displaced inferior vena cava filter prongs.The inferior vena cava filter otherwise had a stable appearance over the hepatic silhouette.Subsequently, after one year and two months later, a computed tomography (ct) abdomen and pelvis were revealed that the inferior vena cava filter had migrated proximally to the level of the liver.There were 4 fragments of 3 remained at the orthotopic position and within the posterior wall of the inferior vena cava.Three of the legs posteriorly projected beyond the wall of the inferior vena cava.Therefore, the investigation is confirmed for the filter migration, perforation of the inferior vena cava (ivc) and filter limb detachment.Based on the available information, the definitive root cause is unknown.Labeling review: a review of product labeling documents (e.G.Procedural instructions, indications, warnings, precautions, cautions, possible complications, contraindications, and unit label) showed that the product labeling is adequate.(expiry date: 02/2017).
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It was reported through the litigation process that a vena cava filter was placed in a patient after being diagnosed with deep vein thrombosis/pulmonary embolism.At some time post filter deployment, it was alleged that filter detached, migrated and struts perforated into organs.Reportedly one detached strut retained in lung and three struts retained in inferior vena cava wall.The device has not been removed and there were no reported attempts made to retrieve the filter.The current status of the patient is unknown.
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