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 four months post filter deployment, the patient presented with back pain.Approximately eight years and eleven months post filter deployment, computed tomography revealed the filter was noted with proximal aspect within the distal inferior vena cava just above the inferior vena cava bifurcation.Two of the filter struts extend into the left common iliac vein with the remaining structures extending into the right common iliac vein.One strut extends posteriorly outside the right common iliac vein for a length of 2cm and directly abuts the l4 vertebral body.Some apparent bone remodeling at this site.Additional strut extends anteriorly from the right common iliac vein for a distance of 6mm with tip directly overlying the posterior wall of the right common iliac artery.Extension of 2 struts beyond the venous walls.Therefore, the investigation is confirmed for perforation of the inferior vena cava (ivc).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.(expiry date: 08/2012).
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