Objective：To study the clinical application of retrieval inferior vena cava filter (IVCF) for deep venous thrombosis (DVT) of lower extremities.
Methods： A retrospective analysis of clinical data of 28 patients with DVT undergoing  IVCF implantation was made. Appling Seldinger technique,28 filters were inserted in inferior vena cava below the renal veins.Anticoagulation therapy was given after operation. The IVCF was taken out  after 14-22 days except 1.
Results：Twenty-seven IVCFs were taken out via femoral venous access.Some blood clot was found in all the filters. One filter was fully blocked by blood clot following venous thrombolysis, but it resolved on thrombolytic therapy. so the filter was not removed. No pulmonary embolism(PE) occurred.
Conclusions：The use of temporary filter in cases of deep venous thrombosis can effectively prevent the development of pulmonary embolism.