Microneedle patch, realtime blood sugar monitoring device, and realtime blood sugar monitoring method using same

This invention describes a device that monitors blood sugar using a microneedle patch. Tiny needles penetrate the skin, where a sensor reacts with sugar in body fluid to change color. A part of the device then measures this color, which reversibly changes based on sugar concentration, and notifies the user of their blood sugar level. The claims specify this sensor uses a polymer matrix for the color change.