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 one month of post deployment, the patient admitted to the hospital with lower extremity pain and swelling, in the patient consultation notes it was reported about 2 weeks ago, the patient was diagnosed with pulmonary embolism and extensive bilateral deep vein thrombosis.An ultrasound lower extremity was performed, and it revealed there was likely thrombosis from the inferior vena cava at the level of the filter down into the iliac veins and bilaterally into the lower extremities.The next day, a venogram was performed and it revealed thrombus was identified above and below the filter.Subsequently an angiojet was used to remove thrombus from the external iliac and common iliac veins bilaterally.Finally, additional tpa infusion therapy was initiated at 1mg per hour through each infusion catheter.The next day, a venogram was performed and it revealed the thrombus within the inferior vena cava including within the filter and superior to the filter has resolved.10cm long infusion catheters were placed in bilateral common femoral and external iliac veins for targeted tpn fusion.Continued infusion at the same rate was planned for overnight and a follow up venogram was planned.The next day, infrarenal inferior vena cava was now clear and filter shows no evidence of adjacent clot.Tpa infusion was stopped at this time.Therefore, the investigation is inconclusive as no objective evidence has been provided to confirm any alleged deficiency with the filter.Additionally, it can be confirmed that the patient experienced pulmonary embolism and thrombus above the filter post deployment.However, the relationship to the filter is unknown.Based on 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: 03/2020).
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