It was reported that sometime after the trapease inferior vena cava filter was implanted, it broke loose and logged in the patient's kidney.Per the person who made the report, the patient needed immediate assistance.Multiple attempts were made unsuccessfully to obtain additional information.The product was not returned for analysis.A review of the device history record revealed no anomalies during the manufacturing and inspection processes that can be associated with the reported complaint.Without procedural films available for review, the reported ¿filter- fractured-separated - in patient¿ and ¿filter- migration¿ could not be confirmed and the exact cause could not be determined.Due to limited information received, it is unknown how long the filter had been implanted in the patient and the type of ¿immediate assistance¿ that was needed for this reported malfunction.The instructions for use (ifu) states filter fracture is a potential complication of vena cava filters.Anatomic locations that create concentrated stress points from filter deformation (for example, deployment at apex of scoliosis, overlapping of either of the renal ostia, or placement adjacent to a vertebral osteophyte) may contribute to fracture of a particular filter strut.Inferior vena cava (ivc) filter migration is a known potential adverse event associated with all ivc filter implants and is listed in the instruction for use (ifu) as such.Possible causes for filter migration includes mega cava, wire entrapment during central venous catheter placement, ¿sail¿ effect (cranial migration) of large clot burden within the filter, mechanical device failure, and operator error.Physiologic causes of migration may result from temporary dysmorphism of the inferior vena cava including bending, coughing or valsalva maneuvers resulting in dislodgment of the filter.Some studies suggest that strenuous physical activity and increased intra-abdominal pressure can lead to migration of ivc filters.Giving the limited information available at this time, clinical factor contributing to the migration could not be determined.Also, with the limited information available for review at this time, there is nothing to suggest that the reported event is related to the design and/or manufacturing process of the device; therefore no corrective action will be taken.Should additional information become available, the file will be updated accordingly.
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