System for monitoring body chemistry

Abstract

A system and method for monitoring body chemistry of a user, the system comprising: a housing supporting: a microsensor comprising a first and second working electrode, a reference electrode, and a counter electrode, and configured to access interstitial fluid of the user, and an electronics subsystem comprising a signal conditioning module that receives a signal stream, from the microsensor, wherein the electronics subsystem is configured to detect an impedance signal derived from two of the first working electrode, the second working electrode, the reference electrode, and the counter electrode; and a processing subsystem comprising: a first module configured to generate an analysis indicative of an analyte parameter of the user and derived from the signal stream and the impedance signal, and a second module configured to transmit information derived from the analysis to the user, thereby facilitating monitoring of body chemistry of the user.

We claim: 
     
         1 . A system for sensing body chemistry of a user, the system comprising:
 a first housing portion supporting a sensor operable to access interstitial fluid of the user upon coupling of the first housing to the user, the sensor exposed through a base surface of the first housing portion, and the first housing including an opening into an electrical interface with the sensor;   an adhesive region coupled to the base surface and surrounding the sensor;   a covering for the adhesive region; and   a second housing portion supporting an electronics subsystem comprising a signal conditioning portion and a data transmission portion comprising an antenna, wherein the system is operable between:
 a loaded mode wherein the second housing portion is seated within the opening of the first housing portion with the electronics subsystem coupled to the electrical interface and the covering is coupled to the adhesive region, 
 a released mode wherein the sensor and the adhesive region are coupled to a user with the electronics subsystem of the second housing portion transmitting signals from the sensor through the antenna and the covering is uncoupled from the adhesive region, and 
 an uncoupled mode wherein the second housing portion is released from the first housing portion.