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Witt J.,BAM Federal Institute of Materials Research and Testing | Narbonneau F.,Multitel | Schukar M.,BAM Federal Institute of Materials Research and Testing | Krebber K.,BAM Federal Institute of Materials Research and Testing | And 8 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2010

We report on three respiration sensors based on pure optical technologies developed during the FP6 EU project OFSETH. The developed smart medical textiles can sense elongation up to 3%, while maintaining the stretching properties of the textile substrates for a good comfort of the patient. The sensors, based on silica and polymer fibre, are developed for monitoring of patients during MRI examination. The OFSETH harness allows a continuous measurement of respiration movements while all vitals organs are free for medical staff actions. The sensors were tested in MRI environment and on healthy adults. © 2010 SPIE. Source


De Jonckheere J.,French Institute of Health and Medical Research | Jeanne M.,French Institute of Health and Medical Research | Narbonneau F.,Multitel | Witt J.,BAM | And 4 more authors.
2010 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC'10 | Year: 2010

The potential benefit of optical fiber sensors embedded into medical textiles for the continuous monitoring of patients for MRI is presented. We report a monitoring system based on the use of two novel nonintrusive optical sensing technologies designed to measure the elongation due to abdominal and thoracic motions during breathing. The developed system can successfully sense textile elongation between 0.1% and 5%, while maintaining the stretching properties of the textile substrates for a good comfort of the patient. The solution prototyped shows a high stability and good reproducibility. The sensors are coupled to a compact, real time and accurate monitoring system. © 2010 IEEE. Source


Musschoot J.,Ghent University | Dendooven J.,Ghent University | Deduytsche D.,Ghent University | Haemers J.,Ghent University | And 2 more authors.
Surface and Coatings Technology | Year: 2012

Alumina was deposited on a non-woven polyester fiber substrate using both thermal and plasma enhanced atomic layer deposition (ALD). The textile was confined inside a one dimensional test structure. The coverage of the ALD film on the nonwoven as a function of depth in the test structure was determined by energy dispersive X-ray spectroscopy (EDX). A model is introduced which links the precursor transport in the nonwoven (transmission, reflection and deposition) with the nonwoven properties (density, fiber surface area, density of surface sites). The experimental results are compared to simulations of the coverage profile. It is shown that longer precursor exposure times result in deposition deeper inside the nonwoven. However, the majority of precursor molecules entering the nonwoven leave the test structure without contributing to film growth. ALD from TMA and oxygen plasma had a very limited penetration into the nonwoven because of radical recombination. This effect is relevant for plasma treatment of fibrous materials in general. © 2012 Elsevier B.V. Source


Narbonneau F.,Multitel | De Jonckheere J.,French Institute of Health and Medical Research | Jeanne M.,French Institute of Health and Medical Research | Kinet D.,Multitel | And 7 more authors.
Progress in Biomedical Optics and Imaging - Proceedings of SPIE | Year: 2010

The potential impact of optical fiber sensors embedded into medical textiles for the continuous monitoring of the patient during Magnetic Resonance Imaging (MRI) is now proved. We report how two pure optical technologies can successfully sense textile elongation between, 0% and 3%, while maintaining the stretching properties of the textile substrates for a good comfort of the patient. Investigating influence of different patients' morphology as well as textile integration issues to let free all vitals organs for medical staff actions, the OFSETH harness allows a continuous measurement of respiration movements. For example, anaesthesia for MRI examination uses the same drugs as for any surgical procedure. Even if spontaneous respiration can be preserved most of the time, spontaneous respiration is constantly at risk of being impaired by anaesthetic drugs or by upper airway obstruction. Monitoring of the breathing activity is needed to assess adequate ventilation or to detect specific obstruction patterns. Moreover artefacts due to physiological motions induce a blooming effect on the MRI result. The use of synchronisation devices allows reducing these effects. Positioned at certain strategic places according to the investigated organ, the presented sensors could constitute an efficient and adapted solution for respiratory synchronisation of the MRI acquisition. ©2010 SPIE. Source


Buyle G.,CENTEXBEL
Technische Textilien | Year: 2010

Guy Buyle focuses on the basics of plasma treatment and its use on textiles. The European project Acteco aimed at developing a new generation of plasma technologies that offer dramatically innovative functional surface properties with a lifetime equal to the finished product in the domains of food packaging, biomedical applications, and textiles. The interaction of the active species in the plasma with the substrate can either lead to adding something to the substrate or to removing something from the substrate. Surface activation refers to the temporal increase of the surface energy. Such a treatment enhances the substrate affinity for other substances and is especially needed for synthetic materials which typically have a low intrinsic surface energy. The basic building blocks of textile materials are individual fibers or filaments and, as a result, the surface area to be treated is much larger for a textile substrate than for a flat film. Source

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