Journal article
Power and signal transmission protocol for a contactless subdural spinal cord stimulation device
Biomedical microdevices, Vol.15(1), pp.27-36
02/2013
DOI: 10.1007/s10544-012-9684-1
PMID: 22892642
Abstract
Wireless signal transmission will play a critical role in developing reliable subdural spinal cord stimulation systems. We have developed an approach to inductively coupling signals across the epidural spacing between the pial and epidural surfaces. The major design constraints include tolerance of coil misalignments from spinal cord geometries in addition to reasonable power efficiencies within the expected range of movement. The design of the primary side as a driving circuit is simplified by several turns of commercial magnetic wire, whereas the implanted secondary side is implemented in a micro-planar spiral coil tuned to a resonant frequency of 1.6 MHz. We present the results of wireless inductive coupling experiments that demonstrate the ability to transmit and receive a frequency modulated 1.6 MHz carrier signal between primary and secondary coil antennae scaled to 10 mm. Power delivery is in the range of 400 mW at a link efficiency of 32 % for strong coupling (coil separations of 0.5 mm ) and in the range of 70 mW at 4 % efficiency for weak coupling (coil separations of 10 mm).
Details
- Title: Subtitle
- Power and signal transmission protocol for a contactless subdural spinal cord stimulation device
- Creators
- Suk-Heung Song - Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, VA 22904, USAGeorge T GilliesMatthew A Howard IIIBrian KuhnleyMarcel Utz
- Resource Type
- Journal article
- Publication Details
- Biomedical microdevices, Vol.15(1), pp.27-36
- Publisher
- United States
- DOI
- 10.1007/s10544-012-9684-1
- PMID
- 22892642
- ISSN
- 1387-2176
- eISSN
- 1572-8781
- Language
- English
- Date published
- 02/2013
- Academic Unit
- Neurology; Iowa Neuroscience Institute; Neurosurgery; Otolaryngology
- Record Identifier
- 9984020750002771
Metrics
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