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Self-metering fluid analysis device

  • US 5,147,606 A
  • Filed: 08/06/1990
  • Issued: 09/15/1992
  • Est. Priority Date: 08/06/1990
  • Status: Expired due to Term
First Claim
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1. A diagnostic device for testing fluid, comprising:

  • a housing for containing fluid;

    a sample application port defined in the housing for introducing a sample of fluid into the housing;

    a metering chamber means positioned in the housing and constructed so as to receive the fluid sample via the sample application port;

    a fluid capillary positioned in the housing comprising a first end and a second end wherein the first end is coupled to the metering chamber means for carrying fluid therefrom toward the second end; and

    a reaction compartment means positioned in the housing and including;

    a first chamber means containing a reagent, anda second chamber means, disposed between the metering chamber means and the first chamber means, containing a filter therein, said filter positioned in flow communication with said metering chamber means;

    wherein the filter is positioned and arranged to allow fluid entering the reaction compartment means from the metering chamber means to be filtered and the reagent react with the filtered fluid.

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