Cited by 7Neuroscience and Neural EngineeringVagus Nerve Stimulation ResearchPain Management and Treatment

Laparoscopic implantation of neural electrodes on pelvic nerves: an experimental study on the obturator nerve in a chronic minipig model

Rabischong, Benoit, Larraín, Demetrio, Rabischong, Pierre, Botchorishvili, Revaz, Fraisse, Georges, Gallego, Stephane, Gaydier, Philippe, Chardigny, Jean Michel +1 more·2011·Surgical Endoscopy

Abstract

Background Laparoscopic exposure of pelvic nerves has opened a new area in the field of neuromodulation. However, electrode design and material deterioration remain issues that limit clinical application. The objective of this study was to evaluate experimentally the laparoscopic implantation of different types of neural electrodes in order to achieve functional and selective electrical stimulation of pelvic nerves.Methods This was a prospective comparative study of the laparoscopic implantation and tolerance and efficacy of three monopolar cuff electrodes implanted on the obturator nerve in ten Göttingen minipigs (18-20 months old; 14.5-24 kg body weight). Animals were allocated to two groups. A 3-mm-diameter laparoscopic instrument was used during dissection of paravesical fossa and obturator nerve on both sides in order to minimize nerve damage. In all animals, a "split-cylinder" cuff electrode was implanted around the left obturator nerve. On the right side, a "lasso" cuff electrode was implanted in the first group and a "closed-cylinder" cuff was implanted in the second group. Electrical stimulation (0-5 V, 20 Hz) was performed for implanted electrodes on days 0, 7, 15, 30, 45, 60, and 90. Current intensity thresholds were identified by palpation of muscle contraction. Strength developed according to stimulation level and was measured using weight transducers.Results All procedures were performed by laparoscopy. Mean operative times differed significantly among groups, the shortest being for split-cylinder electrodes (P = 0.0002). No electrical spread phenomena were observed. Initial thresholds were below 1.5 V (range = 0.5-1.3); however, a significant rise was observed, with time to a maximum of 2.7 V (P < 0.0001). Only split-cylinder electrodes remained functional after 3 months. The mean value of maximum strength remained stable during the study period (P = 0.21, NS).Conclusions The laparoscopic approach to implanting neuroprostheses seems to be very attractive. Furthermore, this approach could allow highly selective nerve stimulation to be achieved using simpler devices such as split-cylinder monopolar electrodes.

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Crossref · 10.1007/s00464-011-1750-x

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  • Laparoscopic implantation of split cylinder cuff electrodes on pelvic nerves in pigs for 3 months resulted in functional electrodes at the end of the study, and the design was easy-to-use for laparoscopic placement.

    “An interesting study conducted with pigs observed the outcomes of laparoscopic implantation of split cylinder cuff electrodes on pelvic nerves for 3 months [67], where the electrodes were functional at the end of the study. Moreover, the design was found to be easy-to-use for laparoscopic placement because it was not necessary to close the electrode once it was installed over the nerve.”

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Authors
Rabischong, B., Larraín, D., Rabischong, P., Botchorishvili, R., Fraisse, G., Gallego, S., Gaydier, P., Chardigny, J. M., & Avan, P.
Affiliations
  • Unité de Nutrition Humaine (FR)
  • Centre Hospitalier Universitaire de Clermont-Ferrand (FR)
  • Université Clermont Auvergne (FR)
Corresponding author
Rabischong, Benoit
Venue
Surgical Endoscopy
Published
2011-06-03
Volume
25
Issue
11
Pages
3706-3712
ISSN
  • 0930-2794 (ISSN-L)
  • 1432-2218
OpenAlex
W2010731532
Cited by
7
References
32
Citations by year
2026: 1 · 2020: 1 · 2018: 2 · 2016: 1 · 2014: 1 · 2012: 1
FWCI
0.26
Type
journal article
Language
en
Open access
closed
Locations
  • Surgical Endoscopy (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
  • Life Sciences › Neuroscience › Neurology › Vagus Nerve Stimulation Research
  • Health Sciences › Medicine › Anesthesiology and Pain Medicine › Pain Management and Treatment
Keywords
obturator nerve, pelvic nerve, neuromodulation, electrical stimulation threshold, minipig model, neural prostheses
MeSH terms
Animals, Electrodes, Implanted, Electric Stimulation Therapy, Female, Obturator Nerve, Pelvis, Laparoscopy, Swine, Swine, Miniature

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