A manufacturing review was not required as this is the only complaint reported to date for this product and lot.The device was not returned for evaluation.Medical records were provided and reviewed.Approximately five months later, patient with severe limiting venous thrombosis and occluded inferior vena cava filter, especially the left side and decided to remove.Through the right internal jugular vein approach, a guide wire was passed through the left side of duplicated system and the filter was retrieved without problem.Therefore, the investigation is confirmed for the alleged filter occlusion.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.(expiry date: 01/2011).
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