Wearable Optical Fiber Sensors in Medical Monitoring Applications: A Review

Zhang, Xuhui; Wang, Chunyang; Zheng, Tong; Wu, Haibin; Wu, Qing; Wang, Yunzheng

doi:10.3390/s23156671

Cited by 12 publications

(5 citation statements)

References 112 publications

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“…• Calibration and regular maintenance: To ensure accuracy, monitoring devices like glucose meters and smart scales must be calibrated regularly [108]. To guarantee that the devices continue to deliver accurate measurements over time, users and healthcare providers should perform routine maintenance checks and upgrades; • Integration of multiple data sources: Accuracy may be improved by integrating data from several sources [105].…”

Section: Data Accuracy and Evaluationmentioning

confidence: 99%

Smart Solutions for Diet-Related Disease Management: Connected Care, Remote Health Monitoring Systems, and Integrated Insights for Advanced Evaluation

Coman,

Ianculescu,

Paraschiv

et al. 2024

Applied Sciences

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The prevalence of diet-related diseases underscores the imperative for innovative management approaches. The deployment of smart solutions signifies a paradigmatic evolution, capitalising on advanced technologies to enhance precision and efficacy. This paper aims to present and explore smart solutions for the management of diet-related diseases, focusing on leveraging advanced technologies, such as connected care, the Internet of Medical Things (IoMT), and remote health monitoring systems (RHMS), to address the rising prevalence of diet-related diseases. This transformative approach is exemplified in case studies focusing on tailored RHMS capabilities. This paper aims to showcase the potential of three RHMS in introducing a novel evaluation method and their customisation for proactive management of conditions influenced by dietary habits. The RO-SmartAgeing System uniquely addresses age-related aspects, providing an integrated approach that considers the long-term impact of dietary choices on ageing, marking an advanced perspective in healthcare. The NeuroPredict Platform, leveraging complex neuroinformatics, enhances the understanding of connections between brain health, nutrition, and overall well-being, contributing novel insights to healthcare assessments. Focused on liver health monitoring, the HepatoConect system delivers real-time data for personalized dietary recommendations, offering a distinctive approach to disease management. By integrating cutting-edge technologies, these smart solutions transcend traditional healthcare boundaries.

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Section: Data Accuracy and Evaluationmentioning

confidence: 99%

Smart Solutions for Diet-Related Disease Management: Connected Care, Remote Health Monitoring Systems, and Integrated Insights for Advanced Evaluation

Coman,

Ianculescu,

Paraschiv

et al. 2024

Applied Sciences

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“…Examples include fiber-optic sensors and bending sensors. Fiber-optic sensors [ 20 , 21 , 22 ], while capable of bending along with the joint, do not stretch very well, hampering the individual’s natural movement. Bending sensors, on the other hand, are both bendable and stretchable.…”

Section: Introductionmentioning

confidence: 99%

Wearable Loop Sensor for Bilateral Knee Flexion Monitoring

Zhang,

Caccese,

Kiourti

2024

Sensors

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We have previously reported wearable loop sensors that can accurately monitor knee flexion with unique merits over the state of the art. However, validation to date has been limited to single-leg configurations, discrete flexion angles, and in vitro (phantom-based) experiments. In this work, we take a major step forward to explore the bilateral monitoring of knee flexion angles, in a continuous manner, in vivo. The manuscript provides the theoretical framework of bilateral sensor operation and reports a detailed error analysis that has not been previously reported for wearable loop sensors. This includes the flatness of calibration curves that limits resolution at small angles (such as during walking) as well as the presence of motional electromotive force (EMF) noise at high angular velocities (such as during running). A novel fabrication method for flexible and mechanically robust loops is also introduced. Electromagnetic simulations and phantom-based experimental studies optimize the setup and evaluate feasibility. Proof-of-concept in vivo validation is then conducted for a human subject performing three activities (walking, brisk walking, and running), each lasting 30 s and repeated three times. The results demonstrate a promising root mean square error (RMSE) of less than 3° in most cases.

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“…However, these sensors often have a limited response rate (typically 5 -200 Hz, Supplementary Section S1). In contrast, optical sensors employ microfibres [20][21][22] , fibre Bragg gratings (FBGs) [23][24][25] and structured optical fibres 26,27 for pulse wave sensing and have the merits of high sensitivity and strong resistance against electromagnetic interference 28,29 . Nevertheless, these sensors often use wavelength-locked methods for sensing and demodulation, which impose stringent requirements on thermal stability (e.g., 1 o C) for prolonged use 20,25 .…”

Section: Introductionmentioning

confidence: 99%

Cuffless Wearable Sphygmomanometers using Dual Digital Optical Frequency Combs in Chalcogenide Chips

Zhang,

Zhong,

Pan

et al. 2024

Preprint

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Sphygmomanometers often inflate a rubber cuff wrapped around the upper arm to measure blood pressure. However, the cuff is uncomfortable and inconvenient, making it highly desirable to develop cuffless sphygmomanometers for continuous monitoring of blood pressure in emergencies and healthcare. Electrical and optical blood pressure sensors provide high sensitivity but often suffer from limited pressure range, temperature drift, slow response and poor wearability. To address the aforementioned limitations, we design and demonstrate a unique cuffless wearable blood pressure sensor (dimensions of 12 mm x 2 mm x 0.5 mm) equipped with two original components: a GeSbS/AsS chalcogenide dual-microring chip as the pressure sensing unit for high sensitivity and wide pressure range, and a dual digital optical frequency comb (DDOFC) system as the detection unit for fast response and low-cost detection. Our sensor is comparable to reported electrical and optical blood pressure sensors in its detection limit (23 Pa) but has a 10-times faster response rate (2 kHz), a 1,000-times longer stable operation (> 4.3x10^7 cycles) and a well-compensated temperature drift (< 0.012 pm/°C) that eliminates the need for temperature control. Our work holds great promise for wearable electronics, mobile healthcare, and human-computer interactions. Moreover, its 2-kHz fast response would enable the capture of previously inaccessible transient details of cardiovascular conditions for critical applications such as in-surgery blood pressure monitoring, orthostatic hypotension studies and unexplored early detection of potential myocardial ischemia and strokes.

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Wearable Optical Fiber Sensors in Medical Monitoring Applications: A Review

Cited by 12 publications

References 112 publications

Smart Solutions for Diet-Related Disease Management: Connected Care, Remote Health Monitoring Systems, and Integrated Insights for Advanced Evaluation

Smart Solutions for Diet-Related Disease Management: Connected Care, Remote Health Monitoring Systems, and Integrated Insights for Advanced Evaluation

Wearable Loop Sensor for Bilateral Knee Flexion Monitoring

Cuffless Wearable Sphygmomanometers using Dual Digital Optical Frequency Combs in Chalcogenide Chips

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