Development of a Sleep Apnea Syndrome Sensor Using Optical Fibers

Mitachi, Seiko; Shiroishi, D.; Nakagawa, Masaya; Satoh, Koichi

doi:10.1109/leos.2007.4382393

Cited by 8 publications

(6 citation statements)

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“…Moreso, electroluminescent wiring or optically fibrous light-emitting entities can easily be woven within a fabric. Textiles oriented on electroluminescent wiring (Hurwitz, 2000;Yei, 2000), conventionally single-or multi-optically based fibers (Mitachi et al, 2007), fluorescent fibrous entities (Huang et al, 2003), and photonically oriented band-gap fibrous entities have been fabricated (Sayed & Skorobogatiy, 2010). In addition to improvement of esthetics, multifunctionalized fibrous substrates can intergrate multifunctionality to textiles including temperature sensing (El-Sherif et al, 2000;Krebber et al, 2012), humidity (Esmaeilzadeh et al, 2015), strain , bending (Rantala et al, 2011), and pressure (Rothmaier et al, 2008), optical behaviors (Harlin et al, 2003), data transportation and communication (Harlin et al, 2002), lasers (Balachandran et al, 1996), and illumination (Johnson et al, 2001;Selm et al, 2010).…”

Section: Nanotechnology Effect On Textile Photonic Technologiesmentioning

confidence: 99%

Influence of nanotechnology in polymeric textiles, applications, and fight against COVID-19

Idumah

2020

The Journal of The Textile Institute

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In recent years, nanotechnology (NT) has proved to be an interdisciplinary research field, and has enlarged its scope of applications in versatile areas of human endeavor. The quests for enhanced multifunctionality in engineering, industrial, technical, and medical textiles have instigated nanotechnological evolution in textile materials. The inclusions of novel technologies such as photonic crystals, plasmonics, luminescence, architectural colorants, holography, LED displays, and metamaterials within textile materials have inculcated multifunctionalities to these materials. NT advancements in textiles through nanoparticles (NPs), and sensor integration within textile materials have enhanced physicochemical behaviors of textiles such as self-cleaning, UV-protection, flame resistance, and antimicrobial, among so on, versatile sensory capabilities, robotics, electrical conductivity, flexibility and comfort, thereby availing it for health, medical, sporting, advanced engineering, pharmaceuticals, aerospace, military, automobile, food and agricultural applications, and more. Fibers inculcated with metallic nanoparticles, such as copper and silver NPs have demonstrated antiviral, and antimicrobial attributes. In this era of COVID-19, NT has enhanced personal protective equipments and fortified antiviral behavior. Therefore, this article elucidates novel nanotechnological advancements in textiles, novel applications, and fight against COVID-19 pandemic.

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Section: Nanotechnology Effect On Textile Photonic Technologiesmentioning

confidence: 99%

Influence of nanotechnology in polymeric textiles, applications, and fight against COVID-19

Idumah

2020

The Journal of The Textile Institute

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“…In contrast, a previously developed sleep apnea syndrome (SAS) sensor using optical fibers, the "F-SAS sensor," is non-invasive and non-restrictive [1][2][3][4].…”

Section: Ordinal Size Of F-sas Sensors and Application To Adults 11 mentioning

confidence: 99%

Optical Fiber-Based Sleep Apnea Syndrome Sensor

Mitachi¹,

Satoh²,

Shimoyama³

et al. 2020

Dysfunction of Olfactory System [Working Title]

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A noninvasive sleep apnea syndrome (SAS) sensor using optical fibers, the "F-SAS sensor," has been evaluated in a clinical application ranging in age from 13 to 78 years and with BMIs of 19.2-39.3. The respiratory disturbance index (RDI) from the F-SAS sensor corresponded well with the apnea hypopnea index (AHI) from polysomnography (PSG). Concurrent measurement of the RDI and the AHI had a correlation coefficient of 0.71. This means that the F-SAS is well-suited for preliminary SAS screening. They would also be useful for screening potential SAS sufferers during normal sleep at home. Then, we have succeeded in downsizing F-SAS sensor and have recognized that it is highly correlated with PSG and pulse oximetry. Next, we applied the compact F-SAS sensor to examining SAS diagnosis in a child patient (2-12 years) and report on improved pediatric analysis. The analysis results revealed the correlation value to be R = 0.87 was a significant improvement over the correlation value of R = 0.697 between the AHI obtained by a sleep apnea syndrome examination apparatus (SAS 2100) and RDI obtained by the conventional F-SAS sensor.

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“…These approaches permit implementing low-cost sensors that can be interrogated using a simple optoelectronic scheme (LED–fiber–photodetector). In general, both glass and plastic optical fibers permit developing low cost alternatives to already existing sensors, for example to monitor joint movements [ 14 ] and spinal posture [ 15 ], as well as sensors for medical application, e.g., sleep apnea [ 16 ] and respiration monitoring [ 2 ]. In [ 16 ], it is presented a plastic optical fiber sensor embedded in a mattress for monitoring sleep apneas.…”

Section: Introductionmentioning

confidence: 99%

“…In general, both glass and plastic optical fibers permit developing low cost alternatives to already existing sensors, for example to monitor joint movements [ 14 ] and spinal posture [ 15 ], as well as sensors for medical application, e.g., sleep apnea [ 16 ] and respiration monitoring [ 2 ]. In [ 16 ], it is presented a plastic optical fiber sensor embedded in a mattress for monitoring sleep apneas. Sensors in mattress permit to monitor the patient without requiring the user to wear anything, there are some commercial devices capable not only of diagnosing nocturnal apneas [ 17 , 18 ], but also of monitoring sleep phases [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Low Cost Plastic Optical Fiber Pressure Sensor Embedded in Mattress for Vital Signal Monitoring

Sartiano

Sales

2017

Sensors

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The aim of this paper is to report the design of a low-cost plastic optical fiber (POF) pressure sensor, embedded in a mattress. We report the design of a multipoint sensor, a cheap alternative to the most common fiber sensors. The sensor is implemented using Arduino board, standard LEDs for optical communication in POF (λ = 645 nm) and a silicon light sensor. The Super ESKA® plastic fibers were used to implement the fiber intensity sensor, arranged in a 4 × 4 matrix. During the breathing cycles, the force transmitted from the lungs to the thorax is in the order of tens of Newtons, and the respiration rate is of one breath every 2–5 s (0.2–0.5 Hz). The sensor has a resolution of force applied on a single point of 2.2–4.5%/N on the normalized voltage output, and a bandwidth of 10 Hz, it is then suitable to monitor the respiration movements. Another issue to be addressed is the presence of hysteresis over load cycles. The sensor was loaded cyclically to estimate the drift of the system, and the hysteresis was found to be negligible.

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Development of a Sleep Apnea Syndrome Sensor Using Optical Fibers

Cited by 8 publications

References 0 publications

Influence of nanotechnology in polymeric textiles, applications, and fight against COVID-19

Influence of nanotechnology in polymeric textiles, applications, and fight against COVID-19

Optical Fiber-Based Sleep Apnea Syndrome Sensor

Low Cost Plastic Optical Fiber Pressure Sensor Embedded in Mattress for Vital Signal Monitoring

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