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Related Experiment Video

Updated: May 25, 2026

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction

Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction

Published on: January 31, 2019

A simple and consistent technique for ventricular catheter insertion using a tripod.

Shoko Merrit Yamada¹, So Yamada, Yoshiaki Goto

¹Department of Neurosurgery, Teikyo University Chiba Medical Center, 3426-3 Anesaki, Ichihara-city, Chiba-Prefecture 299-0111, Japan. merrityamada@hotmail.co.jp

Clinical Neurology and Neurosurgery

|January 17, 2012

Summary

This summary is machine-generated.

A new tripod-guided technique ensures accurate ventricular catheter placement for ventriculo-peritoneal shunts, improving long-term function. This method offers a reliable approach for neurosurgeons.

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Area of Science:

Neurosurgery
Medical Devices
Anatomy

Background:

Accurate placement of the ventricular catheter tip above the foramen of Monro is crucial for maintaining ventriculo-peritoneal (VP) shunt function.
Free-hand techniques for ventricular catheter insertion have shown inconsistencies, potentially compromising long-term shunt patency.

Observation:

The study models the skull's convex surface as a sphere with the foramen of Monro at its center.
Magnetic resonance imaging (MRI) was used to identify the spherical skull region.
A tripod system was employed to achieve perpendicular ventricular catheter insertion.

Findings:

The spherical skull region spans from the coronal suture anteriorly to 20mm anterior and laterally between 15-35mm from the sagittal suture.
Optimal catheter insertion length was determined to be 55-58mm from the brain surface.
The tripod-guided technique achieved ideal ventricular catheter tip placement in over 90% of cases (31/34).

Implications:

Tripod-guided ventricular catheter insertion is a simple, reliable method for VP shunt procedures.
This technique ensures accurate catheter placement regardless of head rotation.
Improved accuracy in catheter placement can lead to better long-term VP shunt function and patient outcomes.