Polymer Optical Fiber Sensors in Healthcare Applications: A Comprehensive Review

Leal‐Junior, Arnaldo; Díaz, Camilo A. R.; Avellar, Letícia; Pontes, Maria José; Marques, Carlos; Frizera, Anselmo

doi:10.3390/s19143156

Cited by 170 publications

(89 citation statements)

References 192 publications

(275 reference statements)

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“…The increase in life expectancy is directly related to improvements in the quality of life, healthcare delivery systems, and patient management. The aging of the population has placed demands on changes in the healthcare system, even more centered on the patient's engagement for health prevention [1], [2]. Recent scientific breakthroughs and technological advancements are changing the way diseases are diagnosed and treated.…”

Section: Introductionmentioning

confidence: 99%

“…All these transformations are involved in the so-called Healthcare 4.0 revolution [3]. Innovative assistive devices, novel healthcare systems, wearables, and biosensors represent the key enabling technologies of such health digitalization, which is leading to patient-tailored treatments and personalized therapies [1]. As an emerging technology, fiber Bragg gratings (FBGs) are becoming increasingly attractive for sensing applications showing several advantages over the competitors [4], [5].…”

Section: Introductionmentioning

confidence: 99%

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Fiber Bragg Gratings for Medical Applications and Future Challenges: A Review

et al. 2020

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In the last decades, fiber Bragg gratings (FBGs) have become increasingly attractive to medical applications due to their unique properties such as small size, biocompatibility, immunity to electromagnetic interferences, high sensitivity and multiplexing capability. FBGs have been employed in the development of surgical tools, assistive devices, wearables, and biosensors, showing great potentialities for medical uses. This paper reviews the FBG-based measuring systems, their principle of work, and their applications in medicine and healthcare. Particular attention is given to sensing solutions for biomechanics, minimally invasive surgery, physiological monitoring, and medical biosensing. Strengths, weaknesses, open challenges, and future trends are also discussed to highlight how FBGs can meet the demands of nextgeneration medical devices and healthcare system. INDEX TERMS biomechanics, biosensing, fiber Bragg grating sensors, minimally invasive surgery, physiological monitoring.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fiber Bragg Gratings for Medical Applications and Future Challenges: A Review

et al. 2020

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“…Optical fiber sensors have experienced a large growth in many fields of applications, including industrial 15 , structural health monitoring 16 and healthcare 17 . In such applications, the optical fiber sensors offer advantages such as compactness, lightweight, potential for multiplexing capabilities, intrinsically safe operation and electromagnetic interference immunity 18 .…”

Section: Introductionmentioning

confidence: 99%

Smart textiles for multimodal wearable sensing using highly stretchable multiplexed optical fiber system

Leal‐Junior

Avellar

Frizera

et al. 2020

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This paper presents the development and application of a multiparameter, quasi-distributed smart textile based on embedded highly stretchable polymer optical fiber (POF) sensors. The POF is fabricated using the light polymerization spinning process, resulting a highly stretchable optical fiber, so-called LPS-POF, with Young’s modulus and elastic limits of 15 MPa and 17%, respectively. The differential scanning calorimetry shows a thermal stability of the LPS-POF in temperature range of 13–40 °C. The developed sensors are based on the optical power variation, which results in a fully portable and low-cost technique. In order to obtain a multiplexed sensor system, a technique based on flexible light emitting diodes (LEDs) on–off keying modulation is applied, where each LED represents the response of one sensor. The smart textile comprises of LPS-POF and three flexible LEDs embedded in neoprene textile fabric. The performance of the system is evaluated for temperature, transverse force and angular displacement detection at different planes. The sensors presented high linearity (mean determination coefficient of 0.99) and high repeatability (inter-measurement deviations below 5%). The sensor is also applied in activity detection, where the principal component analysis (PCA) was applied in the sensors responses and, in conjunction with clustering techniques such as k-means, indicate the possibility of detecting basic activities such as walking, sitting on a chair and squatting.

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“…fiber sensors an intrinsic safe solution for harsh and explosive environments [2]. For these reasons, optical fiber sensors have been widely used in medicine [3], healthcare [4], industrial applications [5], structural health monitoring [6] and in radioactive environments [7].…”

Section: Introductionmentioning

confidence: 99%

Optimizing Linearity and Sensitivity of 3D-Printed Diaphragms With Chirped FBGs in CYTOP Fibers

et al. 2020

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We report the development of an optimization approach for diaphragm-embedded optical fiber sensors, which was applied on the pressure, force and liquid level assessment using chirped fiber Bragg gratings (CFBGs) inscribed in cyclic transparent optical polymer (CYTOP) fibers. The inscription was performed using the plane-by-plane method with a femtosecond laser, whereas the diaphragm optimization was performed through the multi-objective particle swarm optimization (MOPSO). The objective functions for the optimization were obtained from numerical simulation using the finite element method of diaphragms with different thickness and diameters. The MOPSO resulted in a set of solutions with thickness and diameter aiming the optimization of sensitivity and linearity of diaphragm-embedded CFBG sensors. Three configurations were chosen with different values sensitivity and linearity. Experimental analysis was performed in each configuration for temperature and pressure variations, where the results confirmed the different sensitivity and linearity levels for each chosen configuration. Two applications were analyzed for the proposed configurations with higher sensitivity and linearity: one for force estimation over a 200-N range and the other for sub-millimeter assessment of liquid level over a 50-cm range. In order to obtain a highly reliable and accurate system, a novel data integration method for chirped FBGs was proposed. In this case, the estimation of force, pressure or liquid level was performed considering the contributions of both wavelength shift and full width half maximum (FWHM) variations. The proposed approach resulted in error improvement of 60% for all cases and for all parameters analyzed.

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Polymer Optical Fiber Sensors in Healthcare Applications: A Comprehensive Review

Cited by 170 publications

References 192 publications

Fiber Bragg Gratings for Medical Applications and Future Challenges: A Review

Fiber Bragg Gratings for Medical Applications and Future Challenges: A Review

Smart textiles for multimodal wearable sensing using highly stretchable multiplexed optical fiber system

Optimizing Linearity and Sensitivity of 3D-Printed Diaphragms With Chirped FBGs in CYTOP Fibers

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