Patent ID: 8926809
Filing Date: 2015-01-06
Classification: A61B,G01N

Abstract:
1. A method comprising: applying a stabilization voltage between a working electrode and a reference electrode in an eye-mountable device, wherein the stabilization voltage is sufficient to cause an analyte to undergo an electrochemical reaction at the working electrode; while the stabilization voltage is being applied, wirelessly receiving a measurement signal at an antenna in the eye-mountable device; responsive to receiving the measurement signal, activating measurement electronics in the eye-mountable device to transition the measurement electronics from a standby mode to an active mode, wherein the measurement electronics consume more power in the active mode than in the standby mode; and during the active mode, operating the measurement electronics to (i) measure an amperometric current through the working electrode, wherein the amperometric current is related to the analyte, and (ii) wirelessly communicate the measured amperometric current via the antenna.