Abstract
Body temperature and bio-signals are important health indicators that reflect the human health condition. However, monitoring these indexes is inconvenient and time-consuming, requires various instruments, and needs professional skill. In this study, a composite microneedle array electrode (CMAE) was designed and fabricated. It simultaneously detects body temperature and bio-signals. The CMAE consists of a 6 × 6 microneedles array with a height of 500 μm and a base diameter of 200 μm. Multiple insertion experiments indicate that the CMAE possesses excellent mechanical properties. The CMAE can pierce porcine skin 100 times without breaking or bending. A linear calibration relationship between temperature and voltage are experimentally obtained. Armpit temperature (35.8 °C) and forearm temperature (35.3 °C) are detected with the CMAE, and the measurements agree well with the data acquired with a clinical thermometer. Bio-signals including EII, ECG, and EMG are recorded and compared with those obtained by a commercial Ag/AgCl electrode. The CMAE continuously monitors bio-signals and is more convenient to apply because it does not require skin preparation and gel usage. The CMAE exhibits good potential for continuous and repetitive monitoring of body temperature and bio-signals.
Highlights
Home health care management has attracted increasing attention given the rapid increase in the aging population
For elderly individuals living at home and especially paralysis patients and cerebral palsy patients, routine and repetitive measurement of a few basic physiological, including body temperature and bio-signals is important to reflect health conditions
No report has been found that a microneedle array electrode can simultaneously monitor both bio-signals and body temperature
Summary
Home health care management has attracted increasing attention given the rapid increase in the aging population. For elderly individuals living at home and especially paralysis patients and cerebral palsy patients, routine and repetitive measurement of a few basic physiological, including body temperature and bio-signals is important to reflect health conditions. No report has been found that a microneedle array electrode can simultaneously monitor both bio-signals and body temperature. A novel composite microneedle array electrode (CMAE) was fabricated for body temperature and bio-signals monitoring. The microneedle penetrated the skin through the stratum corneum layer to efficiently detect body temperature and bio-signals. The performance of monitoring EII, EMG, and ECG bio-signals was evaluated and compared with those of commercial Ag/AgCl electrodes
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