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Calibration medium containment system

  • US 5,325,853 A
  • Filed: 09/02/1992
  • Issued: 07/05/1994
  • Est. Priority Date: 09/02/1992
  • Status: Expired due to Term
First Claim
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1. A self-contained self-calibrating disposable cartridge for the analysis of liquid samples insertable for use with an associated diagnostic instrument comprising:

  • (a) an enclosure containing a dual-function chamber for calibration media storage and fluid sample analysis, said dual-function chamber defining a hollow interior and inlet and outlet accesses;

    (b) an array of electrochemical sensors including sensor electrodes in communication with the interior of the dual-function chamber;

    (c) an amount of at least one compatible calibration material for one or more of the electrochemical sensors predisposed and stored in the dual-function chamber in contact with said one or more of the electrochemical sensors for immediate availability for the cailbration thereof, said calibration material further being of a type displaced by the introduction of a liquid sample to be analyzed to prevent cross-contamination; and

    (d) a plurality of conductors connected to the sensor electrodes for connecting the sensor electrodes to calibration and analysis devices outside the cartridge.

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