Diaphragm‐based optical fiber sensor for pulse wave monitoring and cardiovascular diseases diagnosis

Wang, Jingyi; Liu, Kewei; Sun, Qizhen; Ni, Xiaoling; Ai, Fan; Wang, Senmao; Yan, Zhijun; Liu, Deming

doi:10.1002/jbio.201900084

Cited by 52 publications

(23 citation statements)

References 31 publications

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“…An FBG sensor in a smart textile made of silk fabric was presented for constant monitoring of vital signs, which can be calculated by analyzing the generated pulse wave, with special emphasis on blood pressure [115]. Another very good work (Figure 19) is from a study in which they showed an FBG sensor to measure HR and blood pressure through an aluminum diaphragm [105] that was placed on the wrist of the arm, which served as an acoustic amplifier when emitting such pulses and could be detected through the characterized fiber. This is a very good idea implemented for obtaining data through the generated sound waves and their analysis to generate results on the activity of pressure, pulse, and blood viscosity.…”

Section: Arterial or Blood Pressurementioning

confidence: 99%

Fiber Optic Sensors for Vital Signs Monitoring. A Review of Its Practicality in the Health Field

et al. 2021

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Vital signs not only reflect essential functions of the human body but also symptoms of a more serious problem within the anatomy; they are well used for physical monitoring, caloric expenditure, and performance before a possible symptom of a massive failure—a great variety of possibilities that together form a first line of basic diagnosis and follow-up on the health and general condition of a person. This review includes a brief theory about fiber optic sensors’ operation and summarizes many research works carried out with them in which their operation and effectiveness are promoted to register some vital sign(s) as a possibility for their use in the medical, health care, and life support fields. The review presents methods and techniques to improve sensitivity in monitoring vital signs, such as the use of doping agents or coatings for optical fiber (OF) that provide stability and resistance to the external factors from which they must be protected in in vivo situations. It has been observed that most of these sensors work with single-mode optical fibers (SMF) in a spectral range of 1550 nm, while only some work in the visible spectrum (Vis); the vast majority, operate through fiber Bragg gratings (FBG), long-period fiber gratings (LPFG), and interferometers. These sensors have brought great advances to the measurement of vital signs, especially with regard to respiratory rate; however, many express the possibility of monitoring other vital signs through mathematical calculations, algorithms, or auxiliary devices. Their advantages due to miniaturization, immunity to electromagnetic interference, and the absence of a power source makes them truly desirable for everyday use at all times.

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Section: Arterial or Blood Pressurementioning

confidence: 99%

Fiber Optic Sensors for Vital Signs Monitoring. A Review of Its Practicality in the Health Field

et al. 2021

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“…With the development of optoelectronic technology [2], optical fiber has been deeply developed in various fields [3]. In medicine, optical fiber sensors are used to detect the presence or concentration of human biomass, such as DNA hybridization detection [4], Escherichia coli detection [5, 6], glutamic acid [7], acetic acid [8], antibiotics [9], cardiovascular diseases diagnosis [10]. In chemical detection, optical fiber is used to make chemical sensors, such as H 2 S specific detection [11], NH 3 detection [12], ethanol concentration [13], harmful substances [14], urea [15], glucose [16, 17] and humidity [18].…”

Section: Introductionmentioning

confidence: 99%

A review of specialty fiber biosensors based on interferometer configuration

Chen

Zhou

et al. 2021

Journal of Biophotonics

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Optical fiber biosensors have attracted extensive research attention in fields such as public health research, environmental science, bioengineering, disease diagnosis and drug research. Accurate detection of biomolecules is essential to limit the extent of disease outbreaks and provide valuable guidance for regulatory agencies to take timely measures. Among many optical fiber sensors, optical fiber biosensors based on specialty fibers have the advantages of biocompatibility, small size, high measurement resolution, high stability and immunity to electromagnetic interference. In this paper, four types interferometer biosensors based on specialty fiber, namely Mach‐Zehnder interferometer, Michelson interferometer, Fabry ‐ Perot interferometer and Sagnac interferometer, are reviewed in terms of operating principles, sensing structure and application fields. The fiber types are further divided into micro‐nano optical fiber, thin core fiber, polarization maintaining fiber, polymer fiber, microstructure optical fiber. Furthermore, this paper evaluates the advantages and disadvantages of these interferometer biosensors. Finally, main challenging problems and expectational development direction of specialty fiber interferometer biosensors are summarized. This text clearly shows the huge development potential of optical fiber biosensors in biomedical.

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“…It is widely used in numerous fields because of its small size and other characteristics [31][32][33]. For medical applications, MEMS pressure sensors are increasingly used to control and monitor the pressure, intraocular pressure, etc., of the body [34][35][36][37], and the clinical effect evaluation is good.…”

Section: Introductionmentioning

confidence: 99%

Relationships of Stresses on Alveolar Bone and Abutment of Dental Implant from Various Bite Forces by Three‐Dimensional Finite Element Analysis

Kang

Wang

et al. 2020

BioMed Research International

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Occlusal trauma caused by improper bite forces owing to the lack of periodontal membrane may lead to bone resorption, which is still a problem for the success of dental implant. In our study, to avoid occlusal trauma, we put forward a hypothesis that a microelectromechanical system (MEMS) pressure sensor is settled on an implant abutment to track stress on the abutment and predict the stress on alveolar bone for controlling bite forces in real time. Loading forces of different magnitudes (0 N–100 N) and angles (0–90°) were applied to the crown of the dental implant of the left central incisor in a maxillary model. The stress distribution on the abutment and alveolar bone were analyzed using a three-dimensional finite element analysis (3D FEA). Then, the quantitative relation between them was derived using Origin 2017 software. The results show that the relation between the loading forces and the stresses on the alveolar bone and abutment could be described as 3D surface equations associated with the sine function. The appropriate range of stress on the implant abutment is 1.5 MPa–8.66 MPa, and the acceptable loading force range on the dental implant of the left maxillary central incisor is approximately 6 N–86 N. These results could be used as a reference for the layout of MEMS pressure sensors to maintain alveolar bone dynamic remodeling balance.

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Diaphragm‐based optical fiber sensor for pulse wave monitoring and cardiovascular diseases diagnosis

Cited by 52 publications

References 31 publications

Fiber Optic Sensors for Vital Signs Monitoring. A Review of Its Practicality in the Health Field

Fiber Optic Sensors for Vital Signs Monitoring. A Review of Its Practicality in the Health Field

A review of specialty fiber biosensors based on interferometer configuration

Relationships of Stresses on Alveolar Bone and Abutment of Dental Implant from Various Bite Forces by Three‐Dimensional Finite Element Analysis

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