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Glucose level measuring apparatus

  • US 4,717,546 A
  • Filed: 11/19/1984
  • Issued: 01/05/1988
  • Est. Priority Date: 11/19/1984
  • Status: Expired due to Fees
First Claim
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1. An apparatus for performing a test to determine the glucose level in a sample of blood placed on a reagent pad attached to an elongated test strip of flexible material, the apparatus comprising the combination of individual means respectively defining a receiving station, a wash station, a de-watering station, and a measuring station in spaced relationship from each other;

  • carrier means for holding a test strip having a reagent pad thereon, said carrier means being movable to transport a test strip having a reagent pad thereon to each of said stations in sequence, said carrier means comprisinga generally cylindrical body having a central axis, said stations being disposed around the circumference of said body;

    means for mounting said body for rotation about said central axis;

    an axially extending holder on said body for receiving and retaining said pad, said holder including means for receiving and retaining a test strip having a reagent pad thereon comprising an elongated body having a flat portion dimensioned to receive (said) a test strip having a reagent pad thereon, said elongated body being slidably mounted on said cylindrical body for axial movement between a retracted position and an extended position; and

    means for controllably moving said elongated body between said retracted and extended positions, said means defining a receiving station located at the same axial position with respect to said central axis as the extended position of said elongated body and said individual means defining a wash station, a de-watering station and a measuring station being located at the same axial position with respect to said central axis as the retracted position of said elongated body, control and drive means for moving said carrier means to transport a reagent pad mounted on a test strip elongated body to said stations and to hold (said) such a test strip sequentially at each of said individual means defining a watering station, a de-watering station and a measuring station while in said retracted position and at said means defining a receiving station while in said extended position for preselected intervals of time,said means defining a wash station including means for washing a reagent pad mounted on a test strip retained by said elongated body when said carrier is moved to present said elongated body to said (said) means defining a wash station,said means defining a de-watering station including means for removing superficial water remaining after washing from a reagent pad mounted on a test strip retained by said elongated body when said (pad) elongated body is moved to said means defining a de-watering station,said means defining a measuring station including means for producing a signal representative of color characteristics of a reagent pad mounted on a test strip retained by said elongated body when said elongated body is moved to said means defining a measuring station, andmeans for receiving said signal and for producing a display representative of color characteristics of a reagent pad mounted on a test strip which is carried by said elongated body.

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