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Microvascular Decompression: Salient Surgical Principles and Technical Nuances
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Double-faced microprobe for vessel transposition in microvascular decompression: technical note.

Yoichi Nonaka1,2, Naokazu Hayashi3, Yusuke Sasaki4

  • 1Department of Neurosurgery, Tokai University School of Medicine, 143 Shimokasuya, Isehara City, Kanagawa, Japan. ynonaka1971@yahoo.co.jp.

Acta Neurochirurgica
|February 7, 2026
PubMed
Summary
This summary is machine-generated.

A novel double-faced microprobe, the SWAN probe, enhances surgical maneuverability during microvascular decompression (MVD) by improving vessel retraction and displacement. This instrument shows promise for safer and more effective MVD procedures.

Keywords:
Hemifacial spasmMicroprobeMicrovascular decompressionNeurovascular compression syndromeTrigeminal neuralgia

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Area of Science:

  • Neurosurgery
  • Surgical Instrumentation
  • Microsurgery

Background:

  • Microvascular decompression (MVD) relies on specialized instruments for vessel manipulation.
  • Conventional instruments with straight tips offer limited retraction capabilities in confined surgical spaces.

Purpose of the Study:

  • To introduce and evaluate the utility of a novel double-faced microprobe, the "SWAN probe," designed to improve maneuverability during MVD.
  • To assess the safety and effectiveness of the SWAN probe in enhancing vessel retraction and displacement.

Main Methods:

  • The SWAN probe features a unique double-faced tip with varying angles for controlled vessel capture, retraction, and advancement.
  • The microprobe was utilized in 51 MVD procedures for trigeminal neuralgia (TN) and hemifacial spasm (HFS).
  • Intraoperative performance and safety were evaluated based on key surgical maneuvers.

Main Results:

  • The SWAN probe demonstrated significantly higher usability scores compared to conventional instruments.
  • The instrument proved particularly beneficial for proximal retraction of the superior cerebellar artery and handling of Teflon slings.
  • No instrument-related complications were reported during the MVD procedures.

Conclusions:

  • The double-faced SWAN probe enhances intraoperative maneuverability by facilitating both retraction and displacement of vessels.
  • The SWAN probe is a safe and effective adjunct for MVD, with potential applications in other microsurgical procedures.