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Multi loop snare technique for difficult inferior vena cava filter retrievals.

Arash Najafi1, Katerina Koulia1, Philippe Aubert1

  • 1Institute of Radiology and Nuclear Medicine, Kantonsspital Winterthur, Brauerstrasse 15, 8405 Winterthur, Switzerland.

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Summary

Retrieving migrated inferior vena cava (IVC) filters can be challenging. An improved multiple-loop-snare technique offers a solution when standard methods fail, enhancing filter retrieval success.

Keywords:
IVC filterLoop snare techniquePulmonary embolismVenous intervention

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Area of Science:

  • Interventional Radiology
  • Medical Device Retrieval

Background:

  • Inferior vena cava (IVC) filter use is increasing.
  • Standard retrieval techniques are often successful, but tilting or migration requires advanced methods.
  • The loop-snare technique is one such advanced method, but can present challenges.

Purpose of the Study:

  • To present an improved loop-snare technique for IVC filter retrieval.
  • To address difficulties encountered with the standard loop-snare technique.

Main Methods:

  • An improved "multiple-loop-snare" technique was developed.
  • Additional loops were created using a reversed-shaped catheter around the filter tip.
  • Guidewires were snared and pulled into a large sheath for retrieval.

Main Results:

  • The improved technique successfully retrieved IVC filters when the simple loop-snare technique failed.
  • Additional loops stabilized the filter tip, facilitating retrieval.

Conclusions:

  • The multiple-loop-snare technique is a refinement of the single loop-snare method.
  • This technique provides an effective solution for challenging IVC filter retrievals.