Manufacturing review: a device history record review could not be performed as the lot number is unknown.Investigation summary: the device was not returned for evaluation.Medical records were provided and reviewed.The proximal aspect of the filter was engaged into the left lateral position of the vena cava wall.This did not allow for proper deployment of the legs of the filter.A snare was used to grasp the proximal aspect of the filter with attempts at repositioning of the filter but unsuccessful and the patient experienced pain with attempts at dislodging the already implanted filter.It appeared due proximal aspect of the filter engaged the right renal vein.Despite multiple attempts, this was unsuccessful in repositioning.Then second meridian filter was successfully deployed in an infrarenal position.Malpositioning of initial filter extending into the right renal vein.Approximately five years and eleven months post filter deployment, computed tomography (ct) revealed that inferior vena cava filter was tilted 32 degrees laterally and one of the structs extends laterally and contact the anterior margin of a vertebral body.The inferior portion of the filter demonstrates strut penetration to 4mm.The tip of the filter resides just below the right renal vein.Therefore, the investigation is confirmed for positioning issue, deployment issue and perforation of the inferior vena cava (ivc).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.
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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 and pulmonary embolism.At some time post filter deployment, it was alleged that the filter struts perforated, deployment issue and positioning issue.The device has not been removed and there were no reported attempts made to retrieve the filter.The patient reportedly experienced pain; however, the current status of the patient is unknown.
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