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Analyte detection device having a serpentine passageway for indicator strips

  • US 5,515,170 A
  • Filed: 09/08/1994
  • Issued: 05/07/1996
  • Est. Priority Date: 09/08/1994
  • Status: Expired due to Term
First Claim
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1. An apparatus for measuring an analyte in a sample applied to a portion of a longitudinally extending strip inserted into said apparatus by reading a reflectance at at least one reading position on the strip, wherein said strip has a leading edge and a trailing edge with respect to insertion into said apparatus, the apparatus comprising:

  • a strip passageway defined by first and second walls extending longitudinally from an upstream open end for accepting said leading edge of said strip to a downstream opposed end;

    an aperture in said first wall for rendering a portion of an inserted strip visible through said aperture;

    said first wall having a first strip bearing surface and said second wall having second and third strip bearing a downstream from said first bearing surface, said second bearing surface being upstream of said aperture and said third bearing surface being downstream of said aperture, said surfaces being oriented to urge a portion of an inserted strip downstream of the second strip bearing surface against said aperture when said at least one reading position overlies said aperture.

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