a multistrutted, spring-style vena cava filter used to prevent pulmonary embolism.
Etymology: L. Greenfield, twentieth-century American surgeon
a filter placed in the inferior vena cava under fluoroscopic guidance. It is used in patients who are particularly vulnerable to pulmonary embolism, such as those diagnosed with deep venous thrombosis with contraindications to anticoagulation, to prevent venous emboli from entering the pulmonary circulation.
Greenfield filterFilter umbrella Clinical medicine A vena caval filter for preventing PE, DVT. See Inferior vena caval filter.
Green·field fil·ter(grēn'fēld fil'tĕr)
A multistrutted spring-styled filter usually placed in the inferior vena cava to prevent venous emboli from reaching the pulmonary circulation from the lower extremity.