Implementation of a telemetric-monitoring system in a cochlear implant

Author

Zierhofer, C.M. ; Hochmair, E.S.

Author_Institution

Inst. for Appl. Phys.-Microelectronics, Innsbruck Univ., Austria

fYear

1994

fDate

1994

Firstpage

910

Abstract

Presents a telemetric-monitoring system which is incorporated in a cochlear implant. This system allows (1) the measurement of voltages at active channels determining the electrode impedances, (2) the measurement of voltages at passive channels for the estimation of the field distribution along the electrode array, and (3) the measurement of the implant supply voltage within a voltage range of 0.1 V<U_m<5.5 V, the resolution is 6 bit. The measurement information is transcutaneously sent to the outside by means of load modulation. The same RF-channel which provides the implant with for external transmission, the value of the measured stimulation data and power can be employed in the implementation of the system, thus eliminating the need for an additional RF-channel

Keywords

biomedical telemetry; ear; hearing aids; patient monitoring; prosthetics; voltage measurement; 0.1 to 5.5 V; RF-channel; active channels; cochlear implant; electrode array; electrode impedance; field distribution; implant supply voltage; load modulation; passive channels; stimulation data; telemetric-monitoring system; Capacitors; Cochlear implants; Current measurement; Electrodes; Hardware; Impedance measurement; Monitoring; Pulse measurements; Telemetry; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE

Conference_Location

Baltimore, MD

Print_ISBN

0-7803-2050-6

Type

conf

DOI

10.1109/IEMBS.1994.415208

Filename

415208