Manufacturing review: the device history records have been reviewed with special attention to the raw materials, subassemblies, manufacturing process, and quality control testing.This lot met all release criteria.There was nothing found to indicate there was a manufacturing related cause for this event.Investigation summary: the device was not returned for evaluation.Medical records were provided and reviewed.After next day, the patient reported to the hospital with chest pain.On the same day, a computed tomography (ct) chest pulmonary angiogram showed that there were filling defects in the lateral segment right upper lobe and proximal trunk right lower lobe pulmonary arteries.There were consistent with pulmonary emboli.After one year and eleven months, an attempt was made to retrieve the filter from the patient.There was no significant thrombus within the inferior vena cava.The filter was retrieved successfully with no immediate complications.Therefore, the investigation is inconclusive for alleged filter tilt.Additionally, it can be confirmed that the patient experienced pulmonary embolism post deployment.However, the relationship to the filter is unknown.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: 11/2012).
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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 deep vein thrombosis.At some time post filter deployment, it was alleged that the filter tilted.The device was removed percutaneously.The patient was diagnosed with pulmonary embolism post implant; however, the current status of the patient is unknown.
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