New implantable stimulator for the FES of paralyzed muscles

Author

Techer, J.D. ; Bernard, S. ; Bertrand, Y. ; Cathebras, G. ; Guiraud, D.

Author_Institution

LIRMM- CNRS, Univ. of Montpellier, France

fYear

2004

fDate

21-23 Sept. 2004

Firstpage

455

Lastpage

458

Abstract

We propose a new implantable circuit for the internal functional electrical stimulation (FES) of motor nerves for paraplegic people. The circuit is designed to deliver precise calibrated stimulation pulses to specific multipolar electrodes. Several original design features have been developed to respond to the particular specifications imposed by safety constraints. In particular, the DAC has been thought to be fully monotonic and the output stage to ensure a passive and secure discharge of the safety capacitor. Also some features have been added in order to improve the classical charge pump that generates on-chip high voltage.

Keywords

biomedical electrodes; biomedical electronics; digital-analogue conversion; handicapped aids; integrated circuit design; neuromuscular stimulation; power supply circuits; prosthetics; safety devices; FES; calibrated stimulation pulses; charge pump; design features; design specifications; fully monotonic DAC; implantable circuit; implantable stimulator; internal functional electrical stimulation; motor nerves; multipolar electrodes; on-chip high voltage generation; output stage; paralyzed muscles; paraplegic people; safety capacitor passive secure discharge; safety constraints; Capacitors; Cathodes; Charge pumps; Electrodes; Muscles; Neuromuscular stimulation; Pulse circuits; Safety; Space vector pulse width modulation; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference, 2004. ESSCIRC 2004. Proceeding of the 30th European

Print_ISBN

0-7803-8480-6

Type

conf

DOI

10.1109/ESSCIR.2004.1356716

Filename

1356716