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Microcoil embolization through a downsized coaxial catheter system: an experimental study.

T Tajima1, K Yoshimitsu, H Irie

  • 1Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan. ttajima@med.kyushu-u.ac.jp

Acta Radiologica (Stockholm, Sweden : 1987)
|May 21, 2009
PubMed
Summary

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This study shows that microcoil embolization is feasible using a new 2-F microcatheter (MC6) with a 3-F system. All tested microcoils passed successfully, demonstrating compatibility for abdominal angiography procedures.

Area of Science:

  • Interventional Radiology
  • Vascular Surgery
  • Medical Device Engineering

Background:

  • Existing microcatheters often have large trailing end diameters, limiting their use in 3-French (F) systems for microcoil embolization.
  • This incompatibility hinders minimally invasive treatment options in abdominal angiography.

Purpose of the Study:

  • To evaluate the in vitro passage of various microcoils through a novel 2-F microcatheter (Meister Cath Superselective Plus, MC6).
  • To assess the compatibility of MC6 with a downsized coaxial 3-F catheter system for embolization procedures.

Main Methods:

  • In vitro testing of microcoil passage through the MC6 microcatheter within a blood vessel model.
  • Utilized six types of microcoils in 17 size variations (2-10 mm diameter, 20-140 mm length).

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  • Assessed microcoil passage, post-deployment shape, and saline volume required for flushing.

    • Main Results:

    • All tested microcoils successfully passed through the MC6 without catheter occlusion.
    • Satisfactory deployment was achieved for all microcoils.
    • Significant differences in saline flush volumes were noted between certain microcoil types (e.g., VortX vs. Reverse TORNADO).

    Conclusions:

    • Microcoil embolization using the new 2-F MC6 microcatheter within a 3-F system is feasible.
    • The MC6 demonstrates compatibility with various microcoils for potential use in abdominal angiography.