Concept

FiberSense technology is based on an optical glucose sensor which measures the glucose concentration of the tissue fluid at the tip of an optical fiber. This tissue fluid glucose concentration directly correlates to blood glucose values. The sensor material consists of a bio sensor which reacts specifically to glucose. It is embedded in an aqueous hydrogel at the tip of a thin light transmitting fiber. This is implanted a few millimeters under the skin. The continuous monitoring is conducted via a miniature fluorescence photometer which is fixed onto the skin with a compatible plaster.

The readings are sent wirelessly to a monitoring device or smartphone. On the display the user can see the current glucose value, set or turn off alarms and follow the blood glucose trend graphically.

 

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Figure 1. Diagram of FiberSense System. Below left: Cross-section of fiber optic (light blue) subcutaneously with sensor (dark blue) as well as plaster and coupling on the skin surface. Below right: FiberSense system with fiber optic and sensor, plaster, coupling and fluorescence detector (blue)