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Cardiovascular system

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Vena-Tech IVC filter


  • introduced as LGM (L.G. Medical, France), 1985; FDA aprroval 1991: Vena-Tech, Evanston, IL
  • 6-leg conical design with 6 stabilizing side bars
  • biocompatible metal known as Phynox (cobalt,chromium,iron,nickel,moly)

Efficacy

  • recurrent PE: 2-6%
  • IVC occlusion: 8-24%
  • migration: 0-12%

Advantages

  • ease of placement
  • excellent clot trapping efficiency
  • low profile
  • lacks ferromagnetic activity: minimal MRI artifacts

Disadvantages

  • incomplete opening (6-19%): decreases clot-trapping efficiency
    • increased incidence from IJ approach
    • decreased with rapid deployment
  • increased IVC thrombosis rates: 8% initial reports; 22-24% on subsequent reports by US/MRI: 2-19% clinically symptomatic


Stephen P. Johnson, MD  -  9 July 1996
Last updated:  1 October 2013


 

Related CHORUS documents:
Simon Nitinol IVC filter
inferior vena cava (IVC) filters
titanium Greenfield IVC filter
inferior vena cava (IVC) filter: indications
bird's nest IVC filter
pulmonary embolism

 

Copyright © 2013, Charles E. Kahn, Jr.