A Partial-Current-Steering Biphasic Stimulation Driver for Vestibular Prostheses

Author

Constandinou, T.G. ; Georgiou, J. ; Toumazou, C.

Author_Institution

Inst. of Biomed. Eng., Imperial Coll. London, London

Volume

2

Issue

2

fYear

2008

fDate

6/1/2008 12:00:00 AM

Firstpage

106

Lastpage

113

Abstract

This paper describes a novel partial-current-steering stimulation circuit for implantable vestibular prostheses. The drive hardware momentarily delivers a charge-balanced asymmetric stimulus to a dummy load before steering towards the stimulation electrodes. In this fashion, power is conserved while still gaining from the benefits of current steering. The circuit has been designed to be digitally programmable as part of an implantable vestibular prosthesis. The hardware has been implemented in AMS 0.35 mum 2P4M CMOS technology.

Keywords

CMOS integrated circuits; bioelectric potentials; biomedical electronics; prosthetics; CMOS technology; charge-balanced asymmetric stimulus; implantable prostheses; partial current steering stimulation circuit; partial-current-steering biphasic stimulation driver; vestibular prostheses; CMOS technology; Driver circuits; Electrical stimulation; Electrodes; Fatigue; Hardware; Irrigation; Neural prosthesis; Prosthetics; Sampling methods; Artificial electrical stimulation; biphasic; bipolar; continuous interleave sampling; current-steering; neural stimulation; neuroprosthetic; vestibular prosthesis;

fLanguage

English

Journal_Title

Biomedical Circuits and Systems, IEEE Transactions on

Publisher

ieee

ISSN

1932-4545

Type

jour

DOI

10.1109/TBCAS.2008.927238

Filename

4579124