Wearable Self-Powered Diaper-Shaped Urinary-Incontinence Sensor Suppressing Response-Time Variation With 0.3 V Start-Up Converter

Tanaka, Ami; Utsunomiya, Fumiyasu; Douseki, Takakuni

doi:10.1109/jsen.2015.2483900

Cited by 21 publications

(10 citation statements)

References 10 publications

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“…Besides, the silver coating could withstand urine soiling and washing at 60 • C. To avoid degradation due to a current flow, the current was strictly limited, in this way increasing the system's lifetime. Similarly, Tanaka et al constructed a diaper-shaped urine sensor with wireless transmitter [120]. Here, interestingly, the embedded battery consisted of absorbent material sandwiched between an aluminum and a carbon sponge electrode, allowing to receive 0.6 V which were up-converted to 2 V. In this way, they could transmit a signal over 5 m if a defined amount of urine is detected.…”

Section: Moisture Detectionmentioning

confidence: 99%

Textile-Based Sensors for Biosignal Detection and Monitoring

Błachowicz

Ehrmann²,

Ehrmann

2021

Sensors

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Biosignals often have to be detected in sports or for medical reasons. Typical biosignals are pulse and ECG (electrocardiogram), breathing, blood pressure, skin temperature, oxygen saturation, bioimpedance, etc. Typically, scientists attempt to measure these biosignals noninvasively, i.e., with electrodes or other sensors, detecting electric signals, measuring optical or chemical information. While short-time measurements or monitoring of patients in a hospital can be performed by systems based on common rigid electrodes, usually containing a large amount of wiring, long-term measurements on mobile patients or athletes necessitate other equipment. Here, textile-based sensors and textile-integrated data connections are preferred to avoid skin irritations and other unnecessary limitations of the monitored person. In this review, we give an overview of recent progress in textile-based electrodes for electrical measurements and new developments in textile-based chemical and other sensors for detection and monitoring of biosignals.

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Section: Moisture Detectionmentioning

confidence: 99%

Textile-Based Sensors for Biosignal Detection and Monitoring

Błachowicz

Ehrmann²,

Ehrmann

2021

Sensors

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“…One possibility here is to integrate sensors in a diaper or within a clinical bag in order to collect urine. In this direction, diapers featuring physical sensors that advise when the individual experiences a leakage in urine of 80 cc have been described in patients with incontinence [38].…”

Section: Discussion On Potential Biological Fluids To Be Analyzed mentioning

confidence: 99%

Wearable Potentiometric Sensors for Medical Applications

Cuartero

Parrilla

Crespo

2019

Sensors

117

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Wearable potentiometric sensors have received considerable attention owing to their great potential in a wide range of physiological and clinical applications, particularly involving ion detection in sweat. Despite the significant progress in the manner that potentiometric sensors are integrated in wearable devices, in terms of materials and fabrication approaches, there is yet plenty of room for improvement in the strategy adopted for the sample collection. Essentially, this involves a fluidic sampling cell for continuous sweat analysis during sport performance or sweat accumulation via iontophoresis induction for one-spot measurements in medical settings. Even though the majority of the reported papers from the last five years describe on-body tests of wearable potentiometric sensors while the individual is practicing a physical activity, the medical utilization of these devices has been demonstrated on very few occasions and only in the context of cystic fibrosis diagnosis. In this sense, it may be important to explore the implementation of wearable potentiometric sensors into the analysis of other biofluids, such as saliva, tears and urine, as herein discussed. While the fabrication and uses of wearable potentiometric sensors vary widely, there are many common issues related to the analytical characterization of such devices that must be consciously addressed, especially in terms of sensor calibration and the validation of on-body measurements. After the assessment of key wearable potentiometric sensors reported over the last five years, with particular attention paid to those for medical applications, the present review offers tentative guidance regarding the characterization of analytical performance as well as analytical and clinical validations, thereby aiming at generating debate in the scientific community to allow for the establishment of well-conceived protocols.

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“…[6][7][8] pH monitoring is also used for accurate cancer therapy treatments, allowing for the discrimination of cancer cells to be selectively destroyed by exploiting advanced localized approaches based on drug delivery systems. 9 Moreover, the assessment of the pH levels (<5.5) of body fluids, such as sweat, 10 tears, 11 urine, 12 and saliva, 13 could provide a wealth of information about the physiological status of an individual. Nowadays, glass pH electrodes are the most widely used tools for pH monitoring, thanks to their reliability and precision.…”

Section: Introductionmentioning

confidence: 99%