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IEEE Trans Biomed Eng. 2010 Jun;57(6):1487-96. doi: 10.1109/TBME.2010.2041058. Epub 2010 Feb 17.

Fully wireless implantable cardiovascular pressure monitor integrated with a medical stent.

Author information

  • 1Brain Computer Interface Laboratory, Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA. eychow@purdue.edu

Abstract

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.

PMID:
20172781
[PubMed - indexed for MEDLINE]
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