How Compact Wearable “Lab on the Skin” Continuously Monitors Glucose And Lactate

 


Imagine being able to track your muscle fatigue during a workout, and measure your blood sugar levels, all with the same small device you wear on your skin. A prototype of such a wearable has been created by engineers at the University of California, San Diego (U C S D). It can simultaneously monitor lactate, glucose, and alcohol levels in real time.


The multitasking device i s roughly the size of six quarters. It is applied to the skin using a patch of tiny needles, or micro needles, about one-fifth the width of a human hair and shaped like Velcro. The device is not painful to wear because the micro needles barely penetrate the skin to detect biomolecules in the interstitial fluid, the fluid surrounding the skin's cells. The device transmits data wirelessly to a custom smartphone app and can be worn on the upper arm. 



According to center director J O S E P H W A N G, a U C San D I E G O professor of bioengineering and co-corresponding author of the paper, "This is like a complete lab on the skin". It is able to continuously measure multiple biomarkers at the same time, making it possible for users to keep an eye on their health and wellness as they go about their day-to-day activities


The majority of commercial health monitors only measure glucose, leaving out information that could aid in better disease management. Diabetes patients can avoid having their blood sugar drop too low after drinking by knowing both levels


Micro Needles Merged With Electronics

A micro needle patch connected to an electronics case makes up the wearable. In the interstitial fluid, various enzymes on the micro needle's tip react with glucose, and lactate. Small electric currents are produced by these reactions, which are analyzed by electronic sensors and sent wirelessly to an app that the researchers created. A smart phone displays the results in real time. 


Utilizing micro needles has the advantage of directly sampling the interstitial fluid, and research has demonstrated that levels of biochemicals measured in that fluid are well correlated with blood levels. 


Patrick Mercier, co-corresponding author of the paper and professor of electrical and computer engineering at U C San Die go, stated, "We’re starting at a really good place with this technology in terms of clinical validity and relevance". That makes it easier to translate clinical research. 


The disposable micro needle patch can be removed from the electronic case for simple replacement. The battery, electronic sensors, wireless transmitter, and other electronic components are housed in the reusable electronic case. Any wireless charging pad that is utilized for smartwatches and smartphones can be used to recharge the device


One of the team's biggest challenges was combining all of these parts into a small, wireless wearable. In addition, combining the micro needle patch, which is exposed to biological fluid, and the reusable electronics, which must remain dry, required clever design and engineering. 


"The magnificence of this is that it is a completely integrated framework that somebody can wear without being fastened to bench top gear", said M E R C I E R, who is likewise the co-overseer of the U C San D I E G O Place for Wearable Sensors


Testing 

Volunteers tested the wearable by wearing it while exercising, eating, and drinking lactate-laden foods and beverages

Comments

Popular posts from this blog

What Is Difference Between Chia Seeds And Flaxseed

Overconsumption of Common Red Food Dye May Lead to Inflammatory Bowel Disease

Border violence displaces 76,000 in Lebanon: Hezbollah