A novel implantable saw sensor for blood pressure monitoring

Author

Liang, B. ; Fang, L. ; Tu, C.L. ; Zhou, C.C. ; Wang, X.J. ; Wang, Q. ; Wang, P. ; Ye, X.S.

Author_Institution

Biomed. Sensors Nat. Special Lab., Zhejiang Univ., Hangzhou, China

fYear

2011

fDate

5-9 June 2011

Firstpage

2184

Lastpage

2187

Abstract

A novel implantable surface acoustic wave (SAW) sensor has been developed for blood pressure monitoring. The sensor is a wireless and batteryless microsystem composed of an SAW resonator, an oscillating circuit and an RF power converter. The total volume of the sensor is 1.9cm³ and the weight is 2.5g including its bio-compatible silicone coating. The sensitivity of the sensor is 1.75 KHz/mmHg. In vivo tests have been performed in a rat, showing the capability of the sensor for monitoring the blood pressure of small laboratory animals.

Keywords

biomedical materials; biosensors; blood pressure measurement; oscillators; patient monitoring; prosthetic power supplies; silicones; surface acoustic wave resonators; surface acoustic wave sensors; wireless sensor networks; RF power converter; SAW resonator; batteryless microsystem; biocompatible silicone coating; blood pressure monitoring; implantable SAW sensor; mass 2.5 g; oscillating circuit; size 1.9 cm; surface acoustic wave sensor; wireless sensor; Biomedical monitoring; Blood pressure; Oscillators; Radio frequency; Resonant frequency; Surface acoustic waves; Temperature sensors; Implantable; RF powering; SAW sensor; blood pressure; wireless;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International

Conference_Location

Beijing

ISSN

Pending

Print_ISBN

978-1-4577-0157-3

Type

conf

DOI

10.1109/TRANSDUCERS.2011.5969371

Filename

5969371