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Related Experiment Video

Updated: Jan 27, 2026

Non-restraining EEG Radiotelemetry: Epidural and Deep Intracerebral Stereotaxic EEG Electrode Placement
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Side Slit Guide Pipe for Precise Placement of Depth Electrodes.

Ayataka Fujimoto1, Yosuke Masuda1, Naoki Ichikawa1

  • 1Comprehensive Epilepsy Center, Seirei Hamamatsu General Hospital, Shizuoka, Japan.

World Neurosurgery
|March 20, 2019
PubMed
Summary

Anchoring depth electrodes (DEs) using a novel side slit guide pipe significantly improves accuracy in stereotactic surgery. This technique minimizes deviation from the planned target, enhancing precision for procedures like epilepsy treatment.

Keywords:
Accurate placementDepth electrodeNeuronavigationSide slit guide pipeStereoelectroencephalography

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Area of Science:

  • Neurosurgery
  • Medical Devices
  • Stereotactic Techniques

Background:

  • Stereotactic surgery aims for precise depth electrode (DE) placement.
  • Electrode deviation can occur due to movement or cerebrospinal fluid leakage.
  • Anchoring DEs before guide pipe removal may improve accuracy.

Purpose of the Study:

  • To evaluate a novel side slit guide pipe for anchoring depth electrodes.
  • To assess the impact of this technique on the accuracy of DE placement.

Main Methods:

  • A side slit guide pipe was developed to anchor DEs to the dura or burr hole edge.
  • The guide pipe prevented DE movement during removal.
  • Accuracy was measured by the distance between the planned target and the DE tip in 13 epilepsy patients.

Main Results:

  • A total of 30 DEs were implanted.
  • The mean deviation from the planned target was 0.570 mm.
  • Dural anchoring resulted in a mean deviation of 0.467 mm, while burr hole edge anchoring showed a mean deviation of 0.596 mm.

Conclusions:

  • Anchoring DEs with the side slit guide pipe allows for more precise placement.
  • This method effectively reduces deviation during stereotactic electrode implantation.