Brain Computer Interface Laboratory, Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907, USA.
IEEE Trans Biomed Eng. 2010 Jun;57(6):1487-96. doi: 10.1109/TBME.2010.2041058. Epub 2010 Feb 17.
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.
本文提出了一种全无线心脏压力传感系统。探索了经食品和药物管理局 (FDA) 批准的医疗支架作为辐射结构，以支持同时进行经皮无线遥测和供电。采用德州仪器 130nmCMOS 工艺设计和制造的专用集成电路 (ASIC)，实现了无线遥测、远程供电、电压调节以及来自微机电系统 (MEMS) 电容传感器的压力测量的处理。本文通过外部 35dB.m RF 电源在 10cm 的距离上演示了全无线压力感应功能。在受控压力室中的测量表明，心脏系统能够使用 42.2kb/s 的信道数据速率在 0-50mmHg 的范围内实现 0.5mmHg 的压力分辨率。
