Journal article
Soft-coupling suspension system for an intradural spinal cord stimulator: Biophysical performance characteristics
Journal of applied physics, Vol.114(16), p.164701
10/28/2013
DOI: 10.1063/1.4827195
Abstract
We have characterized the mechanical compliance of an improved version of the suspension system used to position the electrode-bearing membrane of an intradural neuromodulator on the dorsal pial surface of the spinal cord. Over the compression span of 5 mm, it exhibited a restoring force of 2.4 μN μm−1 and a mean pressure of 0.5 mm Hg (=66 Pa) on the surface below it, well within the range of normal intrathecal pressures. We have implanted prototype devices employing this suspension and a novel device fixation technique in a chronic ovine model of spinal cord stimulation and found that it maintains stable contact at the electrode-pia interface without lead fracture, as determined by measurement of the inter-contact impedances.
Details
- Title: Subtitle
- Soft-coupling suspension system for an intradural spinal cord stimulator: Biophysical performance characteristics
- Creators
- H OyaS SafayiN. D JefferyS ViljoenC. G ReddyB. D DalmJ. K KanwalG. T GilliesM A Howard III
- Resource Type
- Journal article
- Publication Details
- Journal of applied physics, Vol.114(16), p.164701
- DOI
- 10.1063/1.4827195
- ISSN
- 0021-8979
- eISSN
- 1089-7550
- Language
- English
- Date published
- 10/28/2013
- Academic Unit
- Neurology; Iowa Neuroscience Institute; Otolaryngology; Neurosurgery
- Record Identifier
- 9984020623302771
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