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Implantable medical sensor system

  • US 6,201,980 B1
  • Filed: 10/05/1998
  • Issued: 03/13/2001
  • Est. Priority Date: 10/05/1998
  • Status: Expired due to Fees
First Claim
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1. An implantable chemical sensor system for measuring the concentration of an analyte of interest, comprising:

  • a sensor, comprising a material that selectively responds to an analyte of interest by changing its dimensions;

    an implantable transducer, comprising an electronic circuit having at least one variable electrical characteristic that changes in response to dimensional changes of the sensor; and

    a telemetry device that interrogates the transducer transdermally to measure the changes in the electrical characteristic of the circuit as the concentration of analyte changes.

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