New Skin Patch Monitors Glucose and Delivers Diabetes Drugs
People with diabetes need to closely monitor their blood glucose levels multiple times every day, usually using a device that pricks their finger for a blood test to assess whether they need insulin shots or other drugs. Since blood collection and shots can be painful, not all patients do it as regularly as they need to—which can lead to dangerous fluctuations in their blood glucose levels.
Researchers have worked for years on methods to improve and even automate blood glucose monitoring and insulin/drug delivery. For example, insulin pumps make drug delivery easier, and recently designed artificial pancreas systems offer closed-loop monitoring and drug delivery. Now, researchers in Korea have just developed a wearable, and potentially disposable, glucose monitoring and drug-delivery system that uses sweat, not blood, to determine glucose levels.
The results, published today in Science Advances, suggest it’s a major upgrade. There are several differences between the artificial pancreas and the sweat-based monitoring system, according to lead author Hyunjae Lee, of Seoul National University in the Republic of Korea. While both devices can check blood glucose in real time and deliver necessary drugs, the artificial pancreas’s drug-delivery needles are permanently embedded subcutaneously, and the device itself is made of rigid plastic, which "might cause discomfort," Lee tells mental_floss.
The sweat-based system, on the other hand, is transfer-printed onto a thin silicone skin patch. It’s made of flexible and stretchable electronics, a series of stretchable graphene s Continue reading