what is a greenfield filter for blood clots
The inferior vena has been opened up along its length. The diagrammatic insert shows the filter without clot attached. What is a Greenfield filter? A Greenfield filter is a device inserted into the inferior vena cava (the large vein returning blood to the heart). The filter traps clot that might travel up from the legs in some patients. It is inserted through the groin and threaded up the inferior vena cava to rest there.