Used for the prevention of recurrent pulmonary embolism via placement in the vena cava in the following situations:
• Pulmonary thromboembolism when anticoagulants are contraindicated;
• Failure of anticoagulant therapy in thromboembolic diseases;
• Emergency treatment following massive pulmonary embolism where anticipated benefits of conventional therapy are reduced;
• Prophylactically in patients with chronic, recurrent pulmonary embolism where anticoagulant therapy has failed or is contraindicated.