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.Approximately six years and one month later, the patient complaints of abdominal pain an x-ray abdomen single view was performed, and it revealed that the filter at the level of l2-l3.After two weeks, the patient scheduled for the filter retrieval; the right internal jugular vein was accessed.A coned filter retrieval device was advanced through the sheath and attempt was made to grasp the top of the filter and this was unsuccessful.Repeat inferior vena cavogram was performed which showed that the filter tilted with tip embedded in the inferior vena cava wall.Additionally, several legs of the filter had penetrated the wall of the inferior vena cava.Alligator forceps were utilized to free and the graft the filter tip.Attempts were made to pull the filter into the sheath, but this was unsuccessful due to small size of the sheath.The filter was then successfully removed using alligator forceps.Therefore, the investigation is confirmed for alleged filter tilt, perforation of the inferior vena cava, and retrieval difficulties.Based upon 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.
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