Analyte sensor

Abstract

The present disclosure relates generally to systems and methods for measuring an analyte in a host. More particularly, the present disclosure relates to systems and methods for transcutaneous measurement of glucose in a host.

What is claimed is: 
     
         1 . A glucose measuring system, the system comprising:
 an on-skin device configured to measure, process and store glucose sensor data, the on-skin device including   a mounting unit adapted for mounting on a skin of a host,   an electronics unit connected to the mounting unit, the electronics unit configured to perform the processing and storing, and   a sensor for measuring a level of glucose in a host, the sensor comprising an in vivo portion for insertion through the skin at an exit site of the host and an ex vivo portion connected to the mounting unit, wherein the sensor is operably connected to the electronics unit; and   a receiver for receiving and processing the glucose sensor data, and displaying the processed glucose sensor data on a user interface of the receiver,   wherein the on-skin device is configured to transmit stored glucose sensor data only when requested by the receiver, wherein the receiver requests the on-skin device to transmit the requested stored glucose sensor data when the receiver is held within a predetermined distance to the device, and wherein the requesting and transmission use inductive coupling data transmission.   
     
     
         2 . The system of  claim 1 , wherein the receiver is a hand-held computing device. 
     
     
         3 . The system of  claim 1 , wherein the electronics unit is detachably connectable to the mounting unit and wherein the electronics unit is designed to be used with a plurality of sensors. 
     
     
         4 . The system of  claim 1 , wherein the predetermined distance is 3 meters. 
     
     
         5 . The system of  claim 1 , wherein the requested stored sensor data is a predetermined timeframe of data. 
     
     
         6 . The system of  claim 1 , wherein the requested stored data is all sensor data stored on the on-skin device since a last data transmission to the receiver. 
     
     
         7 . The system of  claim 1 , wherein the sensor system is a zero-point calibration system. 
     
     
         8 . The system of  claim 1 , wherein use of the system is enabled without requiring a reference analyte measurement for initial and/or update calibration. 
     
     
         9 . The system of  claim 1 , wherein an initial calibration factor is programmed into the electronics unit or receiver that enables conversion of raw glucose sensor data generated by the glucose sensor into calibrated sensor data solely using information obtained prior to implantation. 
     
     
         10 . A method of a measuring glucose concentration of a host, the method comprising:
 measuring, processing and storing glucose sensor data using an on-skin device, the on-skin device including   a mounting unit adapted for mounting on a skin of a host,   an electronics unit connected to the mounting unit, the electronics unit configured to perform the processing and storing, and   a sensor for measuring a level of glucose in a host, the sensor comprising an in vivo portion for insertion through the skin at an exit site of the host and an ex vivo portion connected to the mounting unit, wherein the sensor is operably connected to the electronics unit;   automatically requesting, using a receiver, glucose sensor data stored on the on-skin device when the receiver is held within a predetermined distance from the on-skin device; and   transmitting, using the on-skin device, the requested stored glucose sensor data,   wherein the requesting and transmission use inductive coupling data transmission.   
     
     
         11 . The method of  claim 10 , wherein the receiver is a hand-held computing device. 
     
     
         12 . The method of  claim 10 , wherein the electronics unit is detachably connectable to the mounting unit and wherein the electronics unit is designed to be used with a plurality of sensors. 
     
     
         13 . The method of  claim 10 , wherein the predetermined distance is 3 meters. 
     
     
         14 . The method of  claim 10 , wherein the requested stored sensor data is a predetermined timeframe of data. 
     
     
         15 . The method of  claim 10 , wherein the requested stored data is all glucose sensor data stored on the on-skin device since a last data transmission to the receiver. 
     
     
         16 . The method of  claim 15 , wherein the on-skin device and the receiver comprise a sensor system, and wherein the sensor system is a zero-point calibration system. 
     
     
         17 . The method of  claim 15 , further comprising enabling monitoring of the host's glucose concentration using the on-skin device and receiver without requiring a reference analyte measurement for initial and/or update calibration. 
     
     
         18 . The method of  claim 15 , wherein an initial calibration factor is programmed into the electronics unit or receiver, and wherein the method further comprises converting raw glucose sensor data generated by the glucose sensor into calibrated sensor data solely using information obtained prior to implantation.