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.Investigation summary: the device was not returned for evaluation.The medical records included images.The image review was documented in the medical records.Medical records were provided and reviewed.Approximately, two years and four days of post deployment, a computed tomography abdomen and pelvis was performed on patient reportedly experiencing abdominal pain.Findings noted minimal pleural effusions were present bilaterally and minimal infiltration posterior basilar region.Filter in the infra renal inferior vena cava was noted.Around, four years and four months later, a standard computed tomography was performed, demonstrating positive evidence of caval perforation with 9 o¿clock inferior strut of grade 2 perforation measuring at 3.7mm, 7 o¿clock inferior strut perforation measuring 3.6mm, and proximal struts with a grade 1 relation to the caval wall consistent with tenting.Filter was noted with posterior tilt measuring 17.66 degrees, 6-degree tilt to the left on the coronal images and a 6-degree tilt anteriorly on the sagittal images.All the struts of the filter protruded through the walls of the inferior vena cava into the surrounding adjacent tissues consistent with grade 2 perforations of the majority of the struts.The 2 anterior struts abutted the posterior wall of the duodenum, suggesting grade 2 or possibly grade 3 perforations.No involvement of the aorta was appreciated.Evidence of migration was also noted with the superior tip of the inferior vena cava was at the level of the renal veins.The upper tip of the filter ended at the upper level just below the level of the renal veins.No obvious clot is seen within the inferior vena cava without contrast.Therefore, the investigation is confirmed for the perforation of the inferior vena cava (ivc), filter tilt and filter migration.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: 02/2013).
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