07471972 is referenced by 436 patents and cites 395 patents.

The present invention provides a sensor head for use in an implantable device that measures the concentration of an analyte in a biological fluid which includes: a non-conductive body; a working electrode, a reference electrode and a counter electrode, wherein the electrodes pass through the non-conductive body forming an electrochemically reactive surface at one location on the body and forming an electronic connection at another location on the body, further wherein the electrochemically reactive surface of the counter electrode is greater than the surface area of the working electrode; and a multi-region membrane affixed to the nonconductive body and covering the working electrode, reference electrode and counter electrode. In addition, the present invention provides an implantable device including at least one of the sensor heads of the invention and methods of monitoring glucose levels in a host utilizing the implantable device of the invention.

Title
Sensor head for use with implantable devices
Application Number
11/21162
Publication Number
7471972 (B2)
Application Date
December 22, 2004
Publication Date
December 30, 2008
Inventor
Mark C Shults
Madison
WI, US
James H Brauker
San Diego
CA, US
Mark A Tapsak
San Diego
CA, US
Rathbun Rhodes
Madison
WI, US
Agent
Knobbe Martens Olson & Bear
Assignee
DexCom
CA, US
IPC
A61B 5/05
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