Wireless ultrasound-powered biotelemetry for implants

Author

Towe, Bruce C. ; Larson, Patrick J. ; Gulick, Daniel W.

Author_Institution

Bioeng. program, Arizona State Univ., Tempe, AZ, USA

fYear

2009

fDate

3-6 Sept. 2009

Firstpage

5421

Lastpage

5424

Abstract

A miniature piezoelectric receiver coupled to a diode is evaluated as a simple device for wireless transmission of bioelectric events to the body surface. The device converts the energy of a surface-applied ultrasound beam to a high frequency carrier current in solution. Bioelectrical currents near the implant modulate the carrier amplitude, and this signal is remotely detected and demodulated to recover the biopotential waveform. This technique achieves millivolt sensitivity in saline tank tests, and further attention to system design is expected to improve sensitivity.

Keywords

bioelectric potentials; biomedical telemetry; biomedical ultrasonics; demodulation; neurophysiology; piezoelectric devices; prosthetics; radiotelemetry; bioelectric events; biopotential waveform; body surface; demodulation; high-frequency carrier current; millivolt sensitivity; miniature piezoelectric receiver; remote detection; saline tank tests; surface-applied ultrasound beam; wireless implants; wireless transmission; wireless ultrasound-powered biotelemetry; Computer Simulation; Electrodes; Prostheses and Implants; Telemetry; Ultrasonics;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2009. EMBC 2009. Annual International Conference of the IEEE

Conference_Location

Minneapolis, MN

ISSN

1557-170X

Print_ISBN

978-1-4244-3296-7

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/IEMBS.2009.5333944

Filename

5333944