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A novel self-expanding fully retrievable intracranial stent (SOLO): experience in nine procedures of stent-assisted aneurysm coil occlusion

  • Interventional Neuroradiology
  • Published:
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Abstract

Introduction

The endovascular treatment of large and broad-necked aneurysms may require the use of a remodelling balloon or a stent system to achieve proper occlusion while maintaining the patency of the parent vessel. With the advent of self-expanding stents that can be delivered through a microcatheter, this kind of treatment has improved and problems with the previously used balloon expandable stents have largely been overcome. However, rigidity, insufficient trackability, and limited or non-existent retrievability may still restrict the application of self-expanding stents in some situations.

Methods

Recently, a stent system with a new and different design has been introduced. This stent is highly flexible, fully retrievable, and can be delivered through a standard 0.021-inch microcatheter without a wire. We describe the first nine cases of stent-assisted coil occlusion of intracranial aneurysms with the use of this stent system. Between May and June of 2004, nine patients with large or broad-necked aneurysms were treated in two endovascular centres. The anatomy of the aneurysms and parent vessels, technical details of the procedure, performance of the stent system, and follow-up results were evaluated.

Results

In all procedures, the SOLO stent could be introduced without difficulty, in one procedure after positioning of a different self-expanding stent system had failed due to vessel tortuosity. Overlapping stents were placed in one patient and stent retrieval or repositioning was successfully performed in two procedures. There was no interference or limitation of subsequent coil occlusion after stenting. With regard to the stent, immediate postprocedure and follow-up angiograms were unremarkable in terms of thromboembolic events and signs of intimal hyperplasia.

Conclusion

From our experience, we conclude that the SOLO stent shows satisfactory performance overall. Its unique design gives the stent properties that may help overcome some of the difficulties experienced with other self-expanding intracranial stent systems.

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Conflict of interest statement

T.L. and J.R. are consultants to ev3; H.H. was cofounder and previous shareholder of Dendron GmbH-Bochum; E.M. receives service-related fees from Boston Scientific.

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Authors and Affiliations

  1. Klinik für Radiologie und Neuroradiologie, Alfried Krupp Krankenhaus, Essen, Germany

    Thomas Liebig, Hans Henkes & Dietmar Kühne

  2. Abteilung für Neuroradiologie und Radiologie, Robert Janker Klinik, Bonn, Germany

    Hans Henkes, Jörg Reinartz & Elina Miloslavski

  3. Abteilung Neuroradiologie, Krankenhaus rechts der Isar, Technischen Universität München, Ismaninger Str. 22, 81675, Munich, Germany

    Thomas Liebig

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  1. Thomas Liebig
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  2. Hans Henkes
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  4. Elina Miloslavski
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  5. Dietmar Kühne
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Correspondence to Thomas Liebig.

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Liebig, T., Henkes, H., Reinartz, J. et al. A novel self-expanding fully retrievable intracranial stent (SOLO): experience in nine procedures of stent-assisted aneurysm coil occlusion. Neuroradiology 48, 471–478 (2006). https://doi.org/10.1007/s00234-006-0062-7

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  • DOI: https://doi.org/10.1007/s00234-006-0062-7

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