US Patent 7184810 Method and a device for measuring glucose

In order to measure the glucose level in the body tissue of a subject, a probe is applied the subject's skin. Electric pulses from a pulse generator are fed to the probe and partially reflected back to a measuring device, where a time resolved measurement is made. The charge obtained from an integration of the measured voltage is transformed to a glucose level using data from a calibration table. This method allows to monitor glucose non-invasively.