What is a SafeFlo inferior vena cava (IVC) filter?

Updated: Oct 31, 2020
  • Author: Gary P Siskin, MD; Chief Editor: Kyung J Cho, MD, FACR, FSIR  more...
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SafeFlo filter

The SafeFlo filter has a unique design; it is made of nitinol wires, and the anchoring mechanism is a double-ring platform. These 2 rings are oversized to exert radial force on the IVC and are slightly angled toward each other to provide additional bidirectional stability. This is connected to the filter element that is designed to be 3 mm smaller than the IVC. It is shaped from nitinol wires into an outer supporting ring and a 5-leafed inner filtration configuration.

The SafeFlo filter is offered in 3 sizes to fit IVC diameters from 15 to 27 mm. Deployment is through a 7F sheath via either a jugular or femoral approach.

Retrieval can be performed through the use of the VascuGrab retrieval system; however, the VascuGrab system is not yet approved by the FDA and not available in the United States.

In vitro results were previously published by Bruckheimer et al. [49] A mutlicenter clinical study has been performed, and the clinical results are pending.

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