A Wearable Flexible Hybrid Electronics ECG Monitor

Poliks, Mark D.; Turner, James N.; Ghose, Kanad; Jin, Zhanpeng; Garg, Mohit; Gui, Qiong; Arias, Ana Claudia; Kahn, Yasser; Schadt, Mark; Egitto, Frank D.

doi:10.1109/ectc.2016.395

Cited by 33 publications

(9 citation statements)

References 11 publications

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“…Moreover, with the 2D mapping capability, the ROA can monitor oxygenation of an area rather than a single point, which is promising for monitoring oxygenation of tissues, wounds, and newly transplanted organs. In addition, the ROA can be integrated to a multimodal near-infrared spectroscopy (NIRS) system, where the ROA is interfaced to printed electromyography (EMG) or electrocardiography (ECG) electrodes on a flexible substrate to provide a lightweight, comfortable, and wearable sensor platform for muscle assessment during a person’s normal activities and exercise ( 32 – 34 ).…”

Section: Resultsmentioning

confidence: 99%

A flexible organic reflectance oximeter array

Khan

Han

Pierre

et al. 2018

Proc. Natl. Acad. Sci. U.S.A.

241

265

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SignificanceThe optical method to determine oxygen saturation in blood is limited to only tissues that can be transilluminated. The status quo provides a single-point measurement and lacks 2D oxygenation mapping capability. We use organic printed optoelectronics in a flexible array configuration that senses reflected light from tissue. Our reflectance oximeter is used beyond conventional sensing locations and accurately measures oxygen saturation on the forehead. In a full system implementation, coupled with a mathematical model, we create 2D oxygenation maps of adult forearms under pressure-cuff–induced ischemia. Our skin-like flexible sensor system has the potential to transform oxygenation monitoring of tissues, wounds, skin grafts, and transplanted organs.

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Section: Resultsmentioning

confidence: 99%

A flexible organic reflectance oximeter array

Khan

Han

Pierre

et al. 2018

Proc. Natl. Acad. Sci. U.S.A.

241

265

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“…Some researchers have looked into positioning rigid electronics components on flexible PI substrates to create signal acquisition electronics [313,549,550]. The signal acquisition electronics were realised by positioning a rigid electropotential monitoring chip on a stretchable PDMS patch (4.8 cm × 4.8 cm) [313].…”

Section: Resistively Coupled Electrodesmentioning

confidence: 99%

Flexible Sensors—From Materials to Applications

et al. 2019

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Flexible sensors have the potential to be seamlessly applied to soft and irregularly shaped surfaces such as the human skin or textile fabrics. This benefits conformability dependant applications including smart tattoos, artificial skins and soft robotics. Consequently, materials and structures for innovative flexible sensors, as well as their integration into systems, continue to be in the spotlight of research. This review outlines the current state of flexible sensor technologies and the impact of material developments on this field. Special attention is given to strain, temperature, chemical, light and electropotential sensors, as well as their respective applications.

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“…To overcome this limitation, the authors introduce a conductive foam to limit the air gap between the patient skin and the electrode. Poliks et al [ 14 ] improve the flexibility and the comfort of the electrode by printing a sensing surface and soldering small surface mounted components onto a flexible polyimide substrate. The electrode they developed is not capacitive, but they proved that it was possible to use a printed flexible substrate as a support for an ECG acquisition device.…”

Section: Introductionmentioning

confidence: 99%

Contactless Capacitive Electrocardiography Using Hybrid Flexible Printed Electrodes

Lessard-Tremblay

Weeks

Morelli

et al. 2020

Sensors

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Traditional capacitive electrocardiogram (cECG) electrodes suffer from limited patient comfort, difficulty of disinfection and low signal-to-noise ratio in addition to the challenge of integrating them in wearables. A novel hybrid flexible cECG electrode was developed that offers high versatility in the integration method, is well suited for large-scale manufacturing, is easy to disinfect in clinical settings and exhibits better performance over a comparable rigid contactless electrode. The novel flexible electrode meets the frequency requirement for clinically important QRS complex detection (0.67–5 Hz) and its performance is improved over rigid contactless electrode across all measured metrics as it maintains lower cut-off frequency, higher source capacitance and higher pass-band gain when characterized over a wide spectrum of patient morphologies. The results presented in this article suggest that the novel flexible electrode could be used in a medical device for cECG acquisition and medical diagnosis. The novel design proves also to be less sensitive to motion than a reference rigid electrode. We therefore anticipate it can represent an important step towards improving the repeatability of cECG methods while requiring less post-processing. This would help making cECG a viable method for remote cardiac health monitoring.

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A Wearable Flexible Hybrid Electronics ECG Monitor

Cited by 33 publications

References 11 publications

A flexible organic reflectance oximeter array

A flexible organic reflectance oximeter array

Flexible Sensors—From Materials to Applications

Contactless Capacitive Electrocardiography Using Hybrid Flexible Printed Electrodes

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