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Optical Fibre Pressure Sensors in Medical Applications.

Poeggel S, Tosi D, Duraibabu D, Leen G, McGrath D, Lewis E - Sensors (Basel) (2015)

Bottom Line: This article is focused on reviewing the current state-of-the-art of optical fibre pressure sensors for medical applications.The small dimensions of optical fibre-based pressure sensors, together with being lightweight and flexible, mean that they are minimally invasive for many medical applications and, thus, particularly suited to in vivo measurement.This paper presents an overview of the recent developments in optical fibre-based pressure measurements with particular reference to these application areas.

View Article: PubMed Central - PubMed

Affiliation: Optical Fibre Sensors Research Centre, University of Limerick, Limerick, Ireland. Sven@Poeggel.eu.

ABSTRACT
This article is focused on reviewing the current state-of-the-art of optical fibre pressure sensors for medical applications. Optical fibres have inherent advantages due to their small size, immunity to electromagnetic interferences and their suitability for remote monitoring and multiplexing. The small dimensions of optical fibre-based pressure sensors, together with being lightweight and flexible, mean that they are minimally invasive for many medical applications and, thus, particularly suited to in vivo measurement. This means that the sensor can be placed directly inside a patient, e.g., for urodynamic and cardiovascular assessment. This paper presents an overview of the recent developments in optical fibre-based pressure measurements with particular reference to these application areas.

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(a) Schematic of a piezoresistive sensor; (b) schematic of a diaphragm displacement sensor; (c) water-filled catheter as the pressure transducer.
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f2-sensors-15-17115: (a) Schematic of a piezoresistive sensor; (b) schematic of a diaphragm displacement sensor; (c) water-filled catheter as the pressure transducer.

Mentions: Strain gauge transducers are characterised as those that exhibit a change in their output parameter in response to the measurand (i.e., strain), e.g., electrical resistance (Figure 2a) or wavelength in optical sensors. The gauge factor (i.e., sensitivity), in Equation (1), is determined by the relative change of resistance (ΔR/R) with respect to the relative change of the length (ΔL/L) (also called strain ϵ). In an electrical sensor, the change in resistance can be most effectively measured using a Wheatstone bridge [44,45].


Optical Fibre Pressure Sensors in Medical Applications.

Poeggel S, Tosi D, Duraibabu D, Leen G, McGrath D, Lewis E - Sensors (Basel) (2015)

(a) Schematic of a piezoresistive sensor; (b) schematic of a diaphragm displacement sensor; (c) water-filled catheter as the pressure transducer.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4541926&req=5

f2-sensors-15-17115: (a) Schematic of a piezoresistive sensor; (b) schematic of a diaphragm displacement sensor; (c) water-filled catheter as the pressure transducer.
Mentions: Strain gauge transducers are characterised as those that exhibit a change in their output parameter in response to the measurand (i.e., strain), e.g., electrical resistance (Figure 2a) or wavelength in optical sensors. The gauge factor (i.e., sensitivity), in Equation (1), is determined by the relative change of resistance (ΔR/R) with respect to the relative change of the length (ΔL/L) (also called strain ϵ). In an electrical sensor, the change in resistance can be most effectively measured using a Wheatstone bridge [44,45].

Bottom Line: This article is focused on reviewing the current state-of-the-art of optical fibre pressure sensors for medical applications.The small dimensions of optical fibre-based pressure sensors, together with being lightweight and flexible, mean that they are minimally invasive for many medical applications and, thus, particularly suited to in vivo measurement.This paper presents an overview of the recent developments in optical fibre-based pressure measurements with particular reference to these application areas.

View Article: PubMed Central - PubMed

Affiliation: Optical Fibre Sensors Research Centre, University of Limerick, Limerick, Ireland. Sven@Poeggel.eu.

ABSTRACT
This article is focused on reviewing the current state-of-the-art of optical fibre pressure sensors for medical applications. Optical fibres have inherent advantages due to their small size, immunity to electromagnetic interferences and their suitability for remote monitoring and multiplexing. The small dimensions of optical fibre-based pressure sensors, together with being lightweight and flexible, mean that they are minimally invasive for many medical applications and, thus, particularly suited to in vivo measurement. This means that the sensor can be placed directly inside a patient, e.g., for urodynamic and cardiovascular assessment. This paper presents an overview of the recent developments in optical fibre-based pressure measurements with particular reference to these application areas.

Show MeSH
Related in: MedlinePlus