What is an IVC Filter?
IVC filters are small, cage-like devices that are inserted into the inferior vena cava (the main vessel returning blood from the lower half of the body to the heart) to capture blood clots and prevent them from reaching the lungs.
Without an IVC filter in place, there would be a potential risk for the embolism to cause a blockage of the pulmonary artery, known as a pulmonary embolism, and cause difficulty breathing, chest pain, and death.
Until recently, IVC filters were only available as permanently implanted devices, but newer filters called optionally retrievable filters, can either be left in place permanently or may be removed from the blood vessel later, when the risk of a blood clot breaking loose has passed.
IVC filter usage has increased since its introduction in 2005 with more than 250,000 filters implanted annually in recent years.
The Global IVC filter market is projected to reach $435 million by 2016, 60% of profit coming from retrievable filters.
In August 2010 Safety Communication, the FDA recommended that implanting physicians and clinicians responsible for the ongoing care of patients with retrievable IVC filters consider removing the filter as soon as protection from pulmonary embolism (PE) is no longer needed.
Unfortunately, it has been reported that only one-quarter of “retrievable” IVC filters are removed and the complication rate of filters is likely to go up the longer IVC filters are left in place.
According to a recent Security and Exchange Commission (SEC) filing, C.R. Bard disclosed that the company received a warning letter from the U.S. Food and Drug Administration alleging misfiled customer complaints, including one reporting a patient’s death.
The warning letter focused on Bard’s Recovery Cone Removal System, which is used to retrieve inferior vena cava (IVC) filters.
The letter also alleges that Bard manufactured the Recovery Cone Removal System without the required clearance or approval, and failed to inform the FDA of serious malfunctions associated with the device.