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Applier tool for intradural spinal cord implants.

H Oya1, C G Reddy, N S Dahdaleh

  • 1Department of Neurosurgery, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA.

Journal of Medical Engineering & Technology
|February 21, 2012
PubMed
Summary
This summary is machine-generated.

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A new device precisely places spinal cord stimulator implants on the pial surface. This novel applier tool improves upon standard epidural stimulator devices for better outcomes.

Area of Science:

  • Neurosurgery
  • Biomedical Engineering
  • Medical Devices

Background:

  • Standard epidural spinal cord stimulators have performance limitations.
  • Intradural placement offers potential advantages over epidural methods.
  • Delicate electro-mechanical implants require specialized delivery tools.

Purpose of the Study:

  • To design, construct, and test a novel applier tool for intradural neuromodulator implants.
  • To facilitate direct placement of implants on the spinal cord's pial surface.
  • To overcome shortcomings associated with current spinal cord stimulation devices.

Main Methods:

  • A 14 cm long, 6 mm diameter stainless steel applier tool was designed and built.
  • The device features reliable mechanisms for implant attachment and release.

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  • In vivo testing involved somatosensory evoked potentials in an ovine model.

    • Main Results:

    • The novel applier tool was successfully designed, constructed, and tested.
    • The device demonstrated effective and reliable handling of the Iowa-Patch™ implant.
    • In vivo testing confirmed the feasibility of intradural implant placement and stimulation.

    Conclusions:

    • A novel applier tool enables precise, direct placement of intradural spinal cord stimulator implants.
    • This device addresses limitations of existing epidural stimulation systems.
    • The developed tool shows promise for advancing spinal cord neuromodulation therapies.