An Inferior vena cava filter (IVC filter), earlier popularly known as Greenfield filter, is a medical device implanted in the inferior vena cava just below the kidneys to capture blood clots, preventing them from reaching the heart and lungs, thereby, safeguarding against life-threatening pulmonary emboli (PE). IVC filters were cleared for use through the 510(k) process since 1976 however, in 2010 the FDA issued a device safety communication after reviewing more than 900 adverse events related to the devices over a period of five-years C.R. Bard, Inc. and Bard Peripheral Vascular, Inc. (collectively, Bard) and Cook Incorporated, Cook Medical LLC, and William Cook Europe ApS (collectively, Cook) are the main manufacturers of retrievable IVC filters. Other manufacturers include Argon Medical Devices, Cordis Corporation, Rex Medical, Johnson & Johnson, ALN, B. Braun Medical, and Rafael Medical.
The IVC Filter deployment is done by interventional radiologists or vascular surgeons. It is generally recommended to patients for whom anticoagulation therapy is contraindicated or ineffective.