What is a Vena Tech LP 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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Vena Tech LP filter

The new Vena Tech filter design was approved by the FDA in 2001. Similar to the LGM, the Vena Tech LP filter is made from Phynox and, therefore, is MRI-compatible. This filter has a conical design with 8 wires for clot trapping connected to 4 sets of inverted V-shaped struts with anchoring barbs. A single design is packaged for both femoral and jugular approaches, with color-coded pushers and matching locking mechanisms for the different approaches. A newer 96-cm introducer kit for an antecubital approach is available. The introducer system is by a 9F outer diameter (OD) (7F inner diameter [ID]) sheath. When deployed, the height is 43 mm. The Vena Tech LP filter was approved by the FDA for use in patients with IVCs of diameters up to 28 mm; in Europe, it is used in patients with IVCs of up to 35 mm in diameter.

In a 2008 report on a multicenter experience in 106 patients, Le Blanche et al found preexisiting partial caval thrombosis in 5 patients and IVC occlusion in 2 patients during the first follow-up period, but no new events during the subsequent follow-up. [37] Filter tilt greater than 15° was seen in 2 patients at the 30-day follow-up. During the 3 follow-up periods, no recurrent or new PE, filter fracture, or migration was seen. [37]

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