Fully wireless implantable cardiovascular pressure monitor integrated with a medical stent.
This paper presents a fully wireless cardiac pressure sensing system. Food and Drug Administration (FDA) approved medical stents are explored as radiating structures to support simultaneous transcutaneous wireless telemetry and powering. An application-specific integrated circuit (ASIC), designed and fabricated using the Texas Instruments 130-nm CMOS process, enables wireless telemetry, remote powering, voltage regulation, and processing of pressure measurements from a microelectromechanical systems (MEMS) capacitive sensor. This paper demonstrates fully wireless-pressure-sensing functionality with an external 35-dB.m RF powering source across a distance of 10 cm. Measurements in a regulated pressure chamber demonstrate the ability of the cardiac system to achieve pressure resolutions of 0.5 mmHg over a range of 0-50 mmHg using a channel data-rate of 42.2 kb/s.
Chow
Eric Y
EY
Brain Computer Interface Laboratory, Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA. eychow@purdue.edu
Chlebowski
Arthur L
AL
Chakraborty
Sudipto
S
Chappell
William J
WJ
Irazoqui
Pedro P
PP
D001795:Blood Pressure Determination / Q000295:instrumentation*; D001807:Blood Vessel Prosthesis; D004867:Equipment Design; D019544:Equipment Failure Analysis; D019736:Prostheses and Implants; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D015607:Stents; D013686:Telemetry / Q000295:instrumentation*