Cited by 55Neuroscience and Neural EngineeringCardiac pacing and defibrillation studiesNerve injury and regeneration

Long‐term biocompatibility of implanted polymer‐based intrafascicular electrodes

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Lawrence, Stephen M., Larsen, Jytte O., Horch, Kenneth W., Riso, Ron, Sinkjær, Thomas·2002·Journal of Biomedical Materials Research

Abstract

Polymer-based longitudinal intrafascicular electrodes (polyLIFEs) were chronically implanted into the sciatic nerve of white New Zealand rabbits (n=8) for a period of 6 months (hereafter referred to as the long-term group). The impact of the implantation procedure, as observed 6 months post surgery, was evaluated in a sham-treated control group (n=9). The contralateral sciatic nerve served as the control for each animal. Nerve-fiber counts, fiber diameters, and myelin thickness were estimated at the level of the implant site, 1.5 cm proximally, and 1.5 cm distally for both nerves in sham-treated and long-term groups. Implantation of polyLIFEs had no significant effect on fiber counts, nerve-fiber diameter, or myelin thickness. A slight increase in connective tissue in the vicinity of the implant site was evident in the long-term group, including a thin but dense capsule immediately surrounding the implanted electrode.

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  • Histology of animal nerves with metal or polymer longitudinal intrafascicular electrodes implanted for six months showed the implants were biocompatible and caused no damage, although a slight increase in connective tissue around the implant site was evident long-term.

    “The histology of animal nerves that had metal or polymer LIFEs implanted for a period of 6 months revealed that the implants are biocompatible and that no damage was caused by the presence of the electrode, although a slight increase in connective tissue surrounding the implant site was evident in the longterm (Lefurge et al., 1991; Lawrence et al., 2002) .”

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Research works printed but not linked: 5

  1. Naples GG, Mortimer JT, Yuen TGH. Overview of peripheral nerve electrode design and implantation. In: Agnew WF, Mc- Creery DB, editors. Neural prostheses: Fundamental studies. Englewood Cliffs, NJ: Prentice Hall; 1991.
  2. Brindley GS. Electrode-arrays for making long-lasting electrical connexion to spinal roots. J Physiol 1972;222:135P-136P.
  3. Kim JH, Manuelidis EE, Glenn WWL, Kaneyuki T. Histopatho- logical changes in the phrenic nerve following long-term elec- trical stimulation. J Thoracic Cardiovasc Surg 1976;72:602- 608.
  4. Picaza JA, Hunter SE, Cannon BW. Pain suppression by pe- ripheral nerve stimulation: Chronic effects of implanted de- vices. Appl Neurophysiol 1977/78;40:223-234.
  5. Mann RW. Efferent and afferent control of an electromyo- graphic, proportional-rate force sensing artificial elbow with cutaneous display of joint angle. Proc Inst Mech Eng H1969; 183:86 -92.

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Authors
Lawrence, S. M., Larsen, J. O., Horch, K. W., Riso, R., & Sinkjær, T.
Affiliations
  • University of Utah (US)
  • Aarhus University (DK)
  • Aalborg University (DK)
Corresponding author
Lawrence, Stephen M.
Venue
Journal of Biomedical Materials Research
Publisher
Wiley
Published
2002-01
Volume
63
Issue
5
Pages
501-506
ISSN
  • 0021-9304 (ISSN-L)
  • 1097-4636
OpenAlex
W1985286658
Cited by
55
References
62
Citations by year
2024: 1 · 2023: 3 · 2022: 1 · 2020: 3 · 2019: 1 · 2018: 3 · 2017: 2 · 2016: 3 · 2015: 1 · 2014: 5 · 2013: 4 · 2012: 3
FWCI
0.58
Type
journal article
Language
en
Open access
Locations
  • Journal of Biomedical Materials Research (publishedVersion)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
  • VBN Forskningsportal (Aalborg Universitet) (submittedVersion)
Funders
  • The Danish National Research Foundation
  • U.S. National Institute of Health
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac pacing and defibrillation studies
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
Keywords
intrafascicular electrodes, chronic implantation, biocompatibility, sciatic nerve, nerve fiber count, myelin thickness, connective tissue capsule, peripheral nerve stimulation, rabbit model
MeSH terms
Animals, Biocompatible Materials, Connective Tissue, Electrodes, Implanted, Humans, Myelin Sheath, Polymers, Rabbits, Random Allocation, Sciatic Nerve, Time Factors

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