Manufacturing review: a lot history review was performed.This is the only complaint to date for this lot number.Therefore, a device history record (dhr) review is not required.Investigation summary: the device was not returned for evaluation.Medical records were provided and reviewed.Approximately four years post filter deployment, computed tomography revealed a metallic wire that penetrates the right ventricular wall.Transthoracic echocardiogram and left heart catheterization were done on the same day which showed there was a small pericardial effusion and foreign object noted on the right ventricle by ischemic evaluation and abnormal electrocardiogram found by 12-lead ekg.An assessment was made the foreign body inferior vena cava filter fragment perforating right ventricle.Subsequently, next day patient was admitted due to chest pain.Computed tomography performed revealed a metallic wire in right ventricle penetrating the right ventricle wall.The patient was scheduled for filter fragment retrieval.The filter fragment was attempted to be retrieved through right femoral and jugular vein access.After numerous unsuccessful attempts, it was not possible to remove the filter fragment from the heart, then procedure was aborted.Approximately, a few days later, the fragment was retrieved successfully.Therefore, the investigation is confirmed for filter limb detachment.However, the investigation is inconclusive for 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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