Manufacturing review: the device history record review could not be performed as the lot number is unknown.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 one-month post filter deployment, the patient experienced abdominal pain and a left lower extremity pain.On the same day, computed tomography performed revealed inferior vena cava filter was in place.After ten months and six days later, computed tomography revealed the superior extent of inferior vena cava filter was at mid l2 vertebral body and inferior extent at inferior l3 vertebral body, positioned within 1 cm of the renal veins.A total of 6 prongs had perforated the inferior vena cava.Maximum distance prongs perforated was 2 mm.This was most significant, where the tine abutted the surface of the infrarenal abdominal aortic aneurysm.Coronal images showed 1-degree tilt right-to-left and sagittal images showed 4-degrees tilt anterior to posterior.Therefore, the investigation is confirmed for perforation of the inferior vena cava (ivc).However, the investigation is unconfirmed for filter tilt as the medical records state ¿coronal images showed 1-degree tilt right-to-left and sagittal images showed 4-degrees tilt anterior to posterior.¿ 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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It was reported through the litigation process that a vena cava filter was placed in a patient after being diagnosed with unknown medical complication.At some time post filter deployment, it was alleged that the filter tilted and struts perforated.The device has not been removed and there were no reported attempts made to retrieve the filter.The patient reportedly experienced abdominal pain; however, the current status of the patient is unknown.
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