Title :
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
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;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-0157-3
DOI :
10.1109/TRANSDUCERS.2011.5969371
