Background: Inferior vena cava (IVC) filter retrieval can be technically challenging in the presence of filter tilt, partial endothelialization, or unfavorable venous anatomy, where conventional single-loop snare techniques may fail to achieve secure engagement.

Methods: This case series describes five patients who underwent elective IVC filter retrieval using the Four-Loop Snare System, a minimally invasive endovascular device designed to enhance capture and control during retrieval. All procedures were performed under fluoroscopic guidance. Snare loop sizes ranging from 20 to 35 mm were selected based on individual anatomical considerations.

Results: Successful retrieval of all five IVC filters was achieved without filter fracture or device-related complications. Mild filter tilt and partial endothelialization were observed in selected cases; however, secure hook engagement and controlled retrieval were consistently achieved. No vascular injury, bleeding, residual thrombus, or adverse clinical events were reported. Both technical and clinical success rates were excellent in terms of main intended use of retrieval.