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, eight years of post-deployment, the patient scheduled for the filter retrieval.In the patient history notes, it was stated an attempt was made to remove the filter, however, the filter was noted to be tilted with at least two of the struts extravascular.Attempts to remove the filter at that time were unsuccessful.A follow up computed tomography (ct) abdomen and pelvis with contrast was revealed extravascular placement of at least three of the filter legs contacting the lateral wall of the aorta and the fourth filter leg contacting the vertebral body with associated sclerotic osseous reaction.An inferior vena cava filter with extravascular filter leg migration.The filter was removed successfully.Therefore, the investigation confirmed for the perforation of the inferior vena cava(ivc), filter tilt and retrieval difficulties.However, the investigation is inconclusive for filter migration and filter limb detachment.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: 04/2013), (b)(4).
|
It was reported through the litigation process that a vena cava filter was placed in a patient after being diagnosed with deep vein thrombosis/pulmonary embolism.At some time post filter deployment, it was alleged that filter migrated to heart, tilted, struts detached and perforated.The device has been removed percutaneously after an attempted but unsuccessful percutaneous removal procedure.There are three filter struts located in aortic wall, fourth strut contacting vertebral body with associated sclerotic osseous reaction.The current status of the patient is unknown.
|