You are here: Project Description: OFSETH in short
Project Description: OFSETH in short
Healthcare monitoring is a general concern for patients requiring a continuous medical assistance and treatment. In order to increase mobility of such patients, a huge effort is pursued worldwide for the development of wearable monitoring systems able to measure vital physiological parameters such as respiration movements, cardiac activity, pulse oxymetry, temperature of the body. Technical or smart textiles that incorporate many different sensors play a growing role in these developments as they are well suited for wearability and can ensure comfort to the user. While most developments up to now have been focused on the use of electrical sensors, the aim of OFSETH is to take advantage of pure optical sensing technologies for extending the capabilities of medical technical textiles for wearable health monitoring.
Technical approach and objectives
OFSETH reasearch will focus on how silica and polymer optical fibres can be used for sensing vital parameters while being compatible with a textile manufacturing process.
Optical fibre sensors have already demonstrated great capabilities for many applications where distance, electromagnetic compatibility (EMC), risk of explosion, need for distributed measurement,… limit the use of standard competing technologies. Up to now however, their use as embedded sensors in technical textiles for medical applications has not been fully explored, despite their expected positive impact.
In this context, OFSETH will notably investigate how measurements of various vital parameters such as cardiac, respiratory rates and pulse oxymetry can be performed through pure optical devices and techniques, such as fibre Bragg gratings (FBG) sensors and near infrared spectroscopy (NIRS), among others, and which could also, in a longer term, suit for non-invasive pH or glucometry measurements. The feasibility of such sensors by using polymer optical fibre (POF) instead of standard glass (silica) fibre for an easier integration into the textile will be investigated, with a special focus on POF FBG.
In parallel, OFSETH will explore all suitable techniques for processing optical fibres together with textile yarns, for the realisation of medical textiles with embedded optical sensors. Specific developments of narrow fabric production techniques as well as custom design of optical fibres shall be necessary in order to obtain a textile manufacturing compatible process that does nor degrade their sensing properties.
OFSETH expects to achieve a breakthrough in healthcare monitoring applications where standard (non-optical) monitoring techniques show significant limits. In particular and as short and mid-term results, OFSETH developments will be assessed for monitoring the vital parameters of sedated or anesthetised patients under medical resonance imaging (MRI), where there is a need for safe, reliable and fully EMC compliant monitoring systems and therefore an interest for the promising properties of pure optical sensing solutions.
The wearability and comfort of the system will then be assessed as this is another goal of OFSETH to enlarge the capabilities of the technique to ambulatory healthcare monitoring and SIDS (Sudden Infant Death Syndrom).
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