A microfabricated electrode with hollow microneedles for ECG measurement
ABSTRACT This paper proposes a novel micromachined physiological recording electrode with hollow microneedles for electrocardiography (ECG) measurement. Compared to the standard commercial wet electrode, a unique characteristic of this device is that a hollow microneedle array, which is made of silicon, can pierce through the outer skin surface, lowering the electrode-skin-electrode impedance (ESEI) and eliminating the need for skin preparation. Furthermore, instead of the conventional electrolytic gel, NaCl solution is used to fill the hollow microneedles and the reservoir etched in the backside of the silicon die; it is more comfortable, easy to acquire and imposes no side-effects on human. Test results of this electrode showed that this device could acquire typical structures of ECG signal with high signal to noise ratio, which provides a potential for routine and repetitive measurement with convenience, and comfort for home health care management of aged population.
- SourceAvailable from: Marzia BedoniSensors and Actuators A Physical 06/2012; 180:177-186. DOI:10.1016/j.sna.2012.04.019 · 1.94 Impact Factor
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ABSTRACT: Remote monitoring of vital signs is an important technique to ensure the health and life quality of a patient. A wearable monitoring system for low-cost and pervasive healthcare is proposed in this paper. The system, which comprises of wireless module, miniaturized electrocardiogram (ECG) sensor and photoplethysmogram (PPG), is able to measure and analyze physiological signs in real-time and with minimum disturbance on daily life. With Bluetooth communications, a phone is able to exchange data with the sensors deployed on body and display the ECG/PPG waveforms as well as the significant physiological variables including heart beat rate, oxygen saturation (SpO2) and systolic blood pressure. The wearability of the system provides great convenience and continuous healthcare service to the user.