Sensor head for use with implantable devices

  • US 8,509,871 B2
  • Filed: 10/28/2008
  • Issued: 08/13/2013
  • Est. Priority Date: 07/27/2001
  • Status: Active Grant
First Claim
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1. A continuous glucose sensor system comprising:

  • an implantable body comprising an electrode configured to measure a glucose concentration in a host, wherein the electrode is configured to generate a current output;

    a membrane disposed over the electrode, the membrane comprising silicone and an enzyme configured to catalyze a reaction of glucose and oxygen from a biological fluid surrounding the membrane; and

    sensor electronics operably connected to the electrode and configured to measure a current from the electrode;

    wherein the continuous glucose sensor system is configured to maintain a 100% current output from the electrode in a fluid with an oxygen concentration of about 0.5 mg/L and a glucose concentration of 400 mg/dL, wherein the 100% current output corresponds to a current output of the system in a fluid with a glucose concentration of 400 mg/dL and an ambient oxygen concentration.

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