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Analyte sensors having a membrane with low temperature sensitivity

  • US 9,775,544 B2
  • Filed: 11/09/2016
  • Issued: 10/03/2017
  • Est. Priority Date: 05/20/2011
  • Status: Active Grant
First Claim
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1. A system comprising:

  • an analyte sensor comprising;

    a counter electrode;

    a working electrode comprising a sensing layer thereon, the sensing layer comprising an analyte responsive enzyme; and

    a diffusion limiting polymeric membrane disposed on the sensing layer, wherein the polymeric membrane comprises a poly(4-vinylpyridine)-co-polystyrene polymer, an ethylene oxide substituent and a propylene oxide substituent,wherein diffusion of an analyte through the diffusion limiting membrane to the sensing layer does not change more than 5% per °

    C. over a range of physiological temperatures; and

    an electrochemical sensor control unit comprising;

    a housing; and

    a transmitter for transmitting sensor signals from the electrochemical sensor.

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