Peterken, F;
Benjaber, M;
Doherty, S;
Perkins, T;
Creasey, G;
Donaldson, N;
Andrews, B;
(2021)
Adapting the Finetech-Brindley Sacral Anterior Root Stimulator for Bioelectronic Medicine*.
In:
2021 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC).
(pp. pp. 6406-6411).
IEEE: Mexico.
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Abstract
The Finetech-Brindley Sacral Anterior Root Stimulator (SARS) is a low cost and reliable system. The architecture has been used for various bioelectric treatments, including several thousand implanted systems for restoring bladder function following spinal cord injury (SCI). Extending the operational frequency range would expand the capability of the system; enabling, for example, the exploration of eliminating the rhizotomy through an electrical nerve block. The distributed architecture of the SARS system enables stimulation parameters to be adjusted without modifying the implant design or manufacturing. To explore the design degrees-of-freedom, a circuit simulation was created and validated using a modified SARS system that supported stimulation frequencies up to 600 Hz. The simulation was also used to explore high frequency (up to 30kHz) behaviour, and to determine the constraints on charge delivered at the higher rates. A key constraint found was the DC blocking capacitors, designed originally for low frequency operation, not fully discharging within a shortened stimulation period. Within these current implant constraints, we demonstrate the potential capability for higher frequency operation that is consistent with presynaptic stimulation block, and also define targeted circuit improvements for future extension of stimulation capability.
| Type: | Proceedings paper |
|---|---|
| Title: | Adapting the Finetech-Brindley Sacral Anterior Root Stimulator for Bioelectronic Medicine* |
| Event: | 43rd Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC) |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/EMBC46164.2021.9630995 |
| Publisher version: | https://doi.org/10.1109/EMBC46164.2021.9630995 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/ |
| Keywords: | Humans, Rhizotomy, Spinal Cord Injuries |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10141970 |
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