Bio-sensing textile based patch with integrated optical detection system for sweat monitoring

Morris, D.; Coyle, Shirley; Wu, Yanzhe; Lau, King Tong; Wallace, Gordon G.; Diamond, Dermot

doi:10.1016/j.snb.2009.02.032

Cited by 207 publications

(140 citation statements)

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“…2. The dye used is bromocresol purple (BCP) that responds to the pH range 4-7 and tetraoctyl ammonium bromide is used to immobilize the dye [18], [19]. For optical detection, a pair of LEDs is used.…”

Section: ) Collection Methods/fluidicsmentioning

confidence: 99%

BIOTEX—Biosensing Textiles for Personalised Healthcare Management

Coyle

Lau

Moyna

et al. 2010

IEEE Trans. Inform. Technol. Biomed.

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Abstract-Textile-based sensors offer an unobtrusive method of continually monitoring physiological parameters during daily activities. Chemical analysis of body fluids, noninvasively, is a novel and exciting area of personalized wearable healthcare systems. BIOTEX was an EU-funded project that aimed to develop textile sensors to measure physiological parameters and the chemical composition of body fluids, with a particular interest in sweat. A wearable sensing system has been developed that integrates a textile-based fluid handling system for sample collection and transport with a number of sensors including sodium, conductivity, and pH sensors. Sensors for sweat rate, ECG, respiration, and blood oxygenation were also developed. For the first time, it has been possible to monitor a number of physiological parameters together with sweat composition in real time. This has been carried out via a network of wearable sensors distributed around the body of a subject user. This has huge implications for the field of sports and human performance and opens a whole new field of research in the clinical setting. F. Di Francesco is with the Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Pisa 56126, Italy (e-mail: fdifra@dcci.unipi.it).D. Costanzo and M. G. Trivella are with the Istituto di Fisiologia Clinica, Consiglio Nazionale delle Ricerche, Pisa 56100, Italy (e-mail: costanzo.daniele@ libero.it; trivella@ifc.cnr.it).P. Salvo and D. E. De Rossi are with the Centro Interdipartimentale di Ricerca "E. Piaggio," Università di Pisa 56100, Italy (e-mail: psalvo@ifc.cnr.it; d.derossi@ing.unipi.it).N. Taccini and R. Paradiso are with Smartex s.r

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Section: ) Collection Methods/fluidicsmentioning

confidence: 99%

BIOTEX—Biosensing Textiles for Personalised Healthcare Management

Coyle

Lau

Moyna

et al. 2010

IEEE Trans. Inform. Technol. Biomed.

Self Cite

291

154

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“…Our own research group has achieved some success with real-time monitoring of sweat pH in a wireless fashion 27 . In a similar study an attempt was made to monitor sodium in sweat wirelessly.…”

Section: Introductionmentioning

confidence: 99%

A wearable electrochemical sensor for the real-time measurement of sweat sodium concentration

Schazmann¹,

et al. 2010

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We report a new easier method for the quantitative analysis of sodium in human sweat. To the best of our knowledge this is the first time this has been done successfully in a real-time manner. We consolidate sweat stimulation, collection and analysis functions into a single method. This temporal data opens up new possibilities in the study of human physiology, broadly applicable from assessing athletic performance and hydration levels to monitoring Cystic Fibrosis (CF) sufferers. Our compact Sodium Sensor Belt (SSB) consists of a sodium selective Ion Selective Electrode (ISE) integrated into a platform that can be interfaced with the human body during exercise. No skin cleaning regime or sweat storage technology is required as samples is continually wicked from skin to a sensing surface and on to a waste terminal via a fabric pump. After an initial equilibration period, a sodium plateau concentration was reached and monitored continuously. Atomic Absorption Spectroscopy (AAS) was used as a refe rence method, confirming accuracy. The plateau concentrations observed fell within expected literature ranges, further confirming accuracy. Daily calibration 2 repeatability (n=4) was ±3.0% RSD and over a three month period reproducibility was ±12.1% RSD (n=56). As a further application, we attempted to monitor the sweat of Cystic Fibrosis (CF) sufferers using the same device. We observed high sodium concentrations symptomatic of CF (~60mM Na + ) for 2 CF patients, with no conclusive results for the remaining patients due to their limited exercising capability. The real-time monitoring of hydration levels during physical exercise for health and performance purposes is a particularly promising application for the SSB at present.

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“…A textile-based fluidic system was developed under the EU BIOTEX project to collect and analyze sweat on the body in real-time [20]. The system employed a passive pumping mechanism based on capillary action using a combination of moisture-wicking fabric and a highly absorbent material.…”

Section: Transport Of Fluids In a Textilementioning

confidence: 99%