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Ion selective/enzymatic electrode medical analyzer device and method of use

  • US 4,935,106 A
  • Filed: 11/15/1985
  • Issued: 06/19/1990
  • Est. Priority Date: 11/15/1985
  • Status: Expired due to Fees
First Claim
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1. An analyzer device for measuring the concentration of a desired substance contained within a body fluid sample comprising:

  • a probe bearing an electrode for generating an electric signal in response to the detection of the desired substance;

    a sample cup formed to receive a static quantity of body fluid sample therein;

    a vessel formed to receive said probe and store a quantity of solution bearing a known concentration of the desired substance to be measured, said vessel being spatially separated at a position vertically above said sample cup and including an opening at its lower distal end;

    means for axially reciprocating said probe through said opening between said vessel and said sample cup to generate an electric signal from said electrode in both the quantity of solution and body fluid sample;

    means for processing said electrical signals to derive a resultant concentration value of the desired substance within the body fluid sample;

    means for displaying said resultant concentration level; and

    means cooperating with said vessel for preventing the passage of solution stored within said vessel through said opening in said vessel, wherein said preventing means comprises means for forming an inverted fluid meniscus which extends across said opening.

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