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Related Experiment Video

Updated: May 26, 2026

Accessing the Subdural Space of the Rodent Spinal Cord for Treatment Delivery
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Accessing the Subdural Space of the Rodent Spinal Cord for Treatment Delivery

Published on: August 8, 2025

Pulsatile spinal cord surrogate for intradural neuromodulation studies.

S Wilson1, M A Howard, J D Rossen

  • 1Department of Neurosurgery, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, Iowa City, Iowa 52242, USA.

Journal of Medical Engineering & Technology
|December 23, 2011
PubMed
Summary

Researchers developed a novel spinal cord surrogate that accurately mimics human spinal cord pulsations. This device aids in creating new neuromodulation implants for pain and motor dysfunction treatments.

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Medical Device Development

Background:

  • The human spinal cord experiences low-amplitude cardiac-driven pulsations.
  • Developing effective intradural implants requires accurate simulation of the spinal cord's mechanical environment.
  • Neuromodulation offers potential treatments for intractable pain and motor system dysfunction.

Purpose of the Study:

  • To design, build, and test a novel spinal cord surrogate.
  • To mimic the physiological pulsations of the human spinal cord.
  • To facilitate the development of advanced intradural implants for neuromodulation.

Main Methods:

  • A silicone surrogate with an oval cross-section (10 mm × 6 mm) was constructed.
  • An integrated angioplasty balloon (3 mm diameter × 3 cm) served as the pulsation actuator.

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Last Updated: May 26, 2026

Accessing the Subdural Space of the Rodent Spinal Cord for Treatment Delivery
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Published on: August 8, 2025

Real-Time Assessment of Spinal Cord Microperfusion in a Porcine Model of Ischemia/Reperfusion
10:27

Real-Time Assessment of Spinal Cord Microperfusion in a Porcine Model of Ischemia/Reperfusion

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  • Pneumatic actuation at 1 Hz and 1.5 atmospheres generated pulsatile motion.

    • Main Results:

    • The surrogate successfully mimicked cardiac-driven spinal cord pulsations.
    • Achieved diametric pulsation of approximately 100 μm.
    • Pulsation closely matched in vivo observations.

    Conclusions:

    • The developed spinal cord surrogate accurately replicates physiological pulsations.
    • This tool is valuable for advancing the design and testing of intradural implants.
    • Enables novel neuromodulation strategies for neurological disorders.