Evolution of Wearable Devices with Real-Time Disease Monitoring for Personalized Healthcare
Abstract
:1. Introduction
2. Portable Devices
2.1. Wrist-Mounted Devices
2.2. Head-Mounted Devices
2.3. E-Textiles
2.4. Others
3. Attachable Devices
3.1. Wearable Skin Patches
3.1.1. Monitoring of Blood Pressure and Heart Rate
3.1.2. Monitoring of Bodily Fluids
3.1.3. Monitoring of Body Temperature
3.2. Contact Lens
4. Implantable and Ingestible Devices
4.1. Implantable Devices
4.2. Ingestible Pills
5. Conclusions
Funding
Conflicts of Interest
References
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Monitoring | Physiological & Physical Parameters (Device) | Ref. | |
---|---|---|---|
Wrist-mounted Devices | Cardiovascular signal | heart rate, blood pulse etc. (wrist band or watch) | [20,21,22,23] |
Sweat contents | glucose, sodium etc. (wrist band or watch) | [24,25] | |
Head-mounted Devices | Salivary contents | lactate, uric acid and glucose etc. (mouth guard) | [32,33,34] |
Sweat contents | Lactate and potassium etc. (eyeglasses) | [30] | |
Cardiovascular signal | heart rate (eyeglasses) | [29] | |
E-Textiles | Sweat contents | glucose and lactate etc. (textiles with electrode) | [36] |
Cardiovascular signal | heart rate and temperature etc. (leg calf) | [40,41,42] | |
Physical activity | foot motion (footwear) | [43,44] | |
Others | Physical activity | sleep, daily activity etc. (ring, necklace and clip etc.) | [46,47,48,49] |
Physical activity | step count and sitting time (belt worn on waist) | [51,52] | |
Physiological signal | ECG and direct current (belt worn on chest) | [53,54,55] |
Advantages | Disadvantages | |
---|---|---|
Piezoelectric sensor | High sensitivity High mechanical stiffness Actuation mechanism is highly resistive to environmental effect (e.g., humidity, temperature) Very fast response Broad frequency range Excellent repeatability | High impedance Small displacements Low material tensile strength Auxiliary Equipment needed Limited temperature range |
Resistive sensor | Bond excellently to most surfaces Minimal sensitivity to transverse strain High frequency response High linearity Low impedance Good spatial resolution Generally unaffected by ambient conditions Ability to measure dynamic loads Simple construction | Temperature sensitive (Gage factor changes with temperature as well) compared to piezoresistive sensors strain gages have much lower sensitivity (typical gage factor 2 vs. 100 for the piezoresistive sensor) |
Capacitive sensor | Be used to detect non-metallic targets Simple in construction and adjustable Detect dense targets and liquids Relatively less costly and small Higher sensitivity and can be operational with small magnitude of force Very good resolution (as low as 0.003 mm) and frequency response | Operation needs a clean environment (a capacitor is affected by temperature, humidity, pressure, dust, etc.) The measurement of capacitance is hard compare to measurement of resistance Capacitive proximity sensor are not so accurate compare to inductive sensor type |
Attachable Devices | |||
---|---|---|---|
Monitoring | Physiological Parameters | Ref. | |
Patch | Cardiovascular signal | Blood pressure and heart rate by measuring of ECG, BCG and pulse transit time with a thin, flexible patch | [59,60,61,65] |
Chemicals | Sweat volume and sweat components like hydration, glucose, lactate, pH and electrolytes | [69,71,72,73,74,77,90] | |
Body temperature | Body temperature on skin | [79,82,83,84] | |
Contact lens | Chemicals | Glucose and lactate in tear fluid | [85,86,87,88,91] |
Implantable and Ingestible Devices | |||
Monitoring | Physiological parameters | Ref. | |
Pace-maker | Cardiovascular signal | Heartbeat for treating arrhythmias | [92,93,94,95] |
Tattoo | Salivary Sweat | Monitoring respiration and pathogenic bacteria detection with tooth enamel Lactate, glucose, alcohol and electrolytes (such as ammonium) with skin worn tattoo | [96,97,98,99,100] |
Bioink | Interstitial fluid | Glucose, pH and electrolytes (such as sodium) | [101,102] |
Smart pill | Medicine | Medicine when drug reaches stomach with patch | [103,104,105] |
Disease | Monitoring | Product Category | Commercial Product |
---|---|---|---|
Metabolic disorder | Glucose Hydration | Wrist band/watch Ear appliance Patch Wrist band/watch | GlucoWatch G2 Biographer [24] Gluco Track Symphony Freestyle Libre Dexcom Patches LVL |
Mosquito-borne diseases | Temperature Sweat patterns | Smart jewelry | TermoTelll bracelet |
Skin disease & UV related disease | Level of UV | Smart patch Smart jewelry | MyUV Patch Netatmo JUNE |
Respiratory diseases | Audio signal, heart rate, accelerations Cardiac electrical activity (ECG) | Wrist band/watch Smart patch | LG Watch Urbane W150 Moto 360 2nd Generation Savvy patch ECG sensor [116] XYZlife Patch BC1 |
Skeletal system diseases | Movement postural variation gait | Smart shoes | CUR Smart Pain Relief Valedo Lumo Lift |
Sleep or stress related disease | Heart rate variability, Heart rate | Wrist watch/band Smart jewelry Patch | Airo Health;s anxiety tracker Oura ring [46] Motiv ring [47] Go2Sleep Kenzen Patch [117] Vital Scout |
Cognitive disorder | GPS | Wrist band/watch | VegaGPSbracelet |
Cardiovascular disease | Heart rate Pulse rate | Wrist watch/band | HEM serieses of OMRON |
Fitness tracking | Heart rate, Calories burned, activity level Heart rate, Heart rate variability, Body temperature | Smart jewelry Ear appliance | Ear-o-smart [48] Cosinuss’ One |
Others | Temperature | Patch Ear appliance | Fever scout degree |
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Share and Cite
Guk, K.; Han, G.; Lim, J.; Jeong, K.; Kang, T.; Lim, E.-K.; Jung, J. Evolution of Wearable Devices with Real-Time Disease Monitoring for Personalized Healthcare. Nanomaterials 2019, 9, 813. https://doi.org/10.3390/nano9060813
Guk K, Han G, Lim J, Jeong K, Kang T, Lim E-K, Jung J. Evolution of Wearable Devices with Real-Time Disease Monitoring for Personalized Healthcare. Nanomaterials. 2019; 9(6):813. https://doi.org/10.3390/nano9060813
Chicago/Turabian StyleGuk, Kyeonghye, Gaon Han, Jaewoo Lim, Keunwon Jeong, Taejoon Kang, Eun-Kyung Lim, and Juyeon Jung. 2019. "Evolution of Wearable Devices with Real-Time Disease Monitoring for Personalized Healthcare" Nanomaterials 9, no. 6: 813. https://doi.org/10.3390/nano9060813