This is a small cone-shaped device that is implanted in the inferior vena cava to capture a thrombus, a blood clot that has formed in the deep veins of the lower extremities and migrates through the bloodstream to the heart or lung vessels (pulmonary artery and its branches), which can lead to lightning closure of the lumen of a large vessel.
Thromboembolism from the veins of the lower extremities can lead to the following conditions: Pulmonary embolism with the development of lung tissue infarction and the formation of high pressure in the right chambers of the heart , which causes instant shortness of breath, and sometimes reflex cardiac arrest (divided into chronic thromboembolism and acute pulmonary embolism)