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Strut interlocking of Titanium Greenfield vena cava filters and its effect on clot capturing: Anin vitro study

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Abstract

Purpose

To determine the influence of filter leg-interlocking on filtering efficiency of titanium Greenfield inferior vena cava filters in anin vitro model.

Methods

Titanium Greenfield filters (TGF) were placed in an inferior vena cava (IVC) flow phantom with no interlocking legs, or with one or two pairs of legs interlocked. Clot emboli of varying sizes were introduced into the stream of flow, and the frequency of successful captures by the deformed filters was recorded.

Results

Interlocking filter legs diminished the filtering efficiency of the TGF by up to 80% with the flow phantom in a horizontal position; no such compromise existed when the phantom was in a vertical position.

Conclusion

When leg interlocking is verified radiographically, the filtering efficiency of the TGF is reduced, and placement of a second IVC filter may be indicated.

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Author information

Authors and Affiliations

  1. Department of Radiology, Harbor-UCLA Medical Center, 1000 West Carson Street, 90509-2910, Torrance, CA, USA

    Craig D. Korbin & Robert T. Andrews

  2. Department of Radiology, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, 90048, Los Angeles, CA, USA

    Richard J. Van Allan

  3. Department of Radiology, Los Angeles County-USC Medical Center, 1500 San Pablo Street, 90033, Los Angeles, CA, USA

    Michael D. Katz

  4. Department of Radiology, University of California at San Francisco, 94143, San Francisco, CA, USA

    George P. Teitelbaum

Authors
  1. Craig D. Korbin
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  2. Richard J. Van Allan
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  3. Robert T. Andrews
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  4. Michael D. Katz
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  5. George P. Teitelbaum
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Korbin, C.D., Van Allan, R.J., Andrews, R.T. et al. Strut interlocking of Titanium Greenfield vena cava filters and its effect on clot capturing: Anin vitro study. Cardiovasc Intervent Radiol 17, 204–206 (1994). https://doi.org/10.1007/BF00571535

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  • DOI: https://doi.org/10.1007/BF00571535

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