The Board of Trustees of the Leland Stanford Junior University;The Regents of the University of California
发明人:
Sam Emaminejad,Carlos Milla,Wei Gao,Ali Javey,Eric Wu,Ronald W. Davis
申请号：
US15700119
公开号：
US20180070870A1
申请日:
2017.09.09
申请国别(地区):
US
年份:
2018
代理人:
摘要：
A device for on-demand sweat extraction and analysis is realized as a printed circuit comprising a microcontroller, an iontophoresis circuit, a sensing circuit, and an electrode array having iontophoresis electrodes for sweat induction and sensing electrodes connected for sweat sensing. The sensing electrodes are positioned between the iontophoresis electrodes. The iontophoresis electrodes are preferably crescent-shaped and comprise a layer of agonist agent hydrogel loaded with sweat stimulating compounds. The iontophoresis circuit has a programmable current source for iontophoresis current delivery, and the sensing circuit includes two signal conditioning paths, where each of the paths includes an analog front-end to amplify a sensed signal and a low-pass filter to minimize high frequency noise and electromagnetic interference. The iontophoresis circuit and the sensing circuit are electrically decoupled for independent functionality.
