Device for automatically analyzing samples by means of colorimetric procedure especially applied to blood analysis
AssigneeBiosema
InventorSerge A. Covain
Life of this patent
Estimating the term…
Abstract
A device for automatically analyzing samples by a colorimetric procedure may be particularly used for blood analysis. A reaction ring bearing at its periphery an array of transparent reaction cups is stationary. An optical fiber is mounted on a rotating disk, concentric with the reaction ring and downwardly oriented with respect to the top of a cup, the optical fiber having one end at a central location where it receives light from a stationary light source and its other end opposite a bottom of a reaction cup in alignment with a measuring photomultiplier.
Claims14
An analyzer for automatically analyzing samples by means of a colorimetric procedure comprising:
- a sample supporting plate;
- a stationary reaction ring provided at a periphery of said ring with a plurality of cells supporting transparent reaction cups for receiving a mixture of sample and reagent for analysis;
- a stationary reagent plate located concentrically within said stationary reaction ring supporting a plurality of reagent flasks;
- means for taking and supplying the sample and reagent into said reaction cups;
- wherien said means for taking and supplying comprises a stationary support located at the center of said stationary reagent plate, a rotatable support rotatably attached to said stationary support, an arm rotatably supported beneath an end of said rotatable support on a first axis of rotation, and a sampling arm bearing at least one sampling tube independently rotatably supported at each end of said arm such that the sampling arm rotates about second axes located at each end of said arm with a distal end of each sampling tube being spaced from a respective one of said second axes;
- and
- a colorimetric analysis assembly;
- wherein the colorimetric analysis assembly comprises a stationary light source for providing light, colored filters, a metering photomultiplier for measuring the light passed through the reaction cups, at least one optical fiber and a rotating disk which is concentric with the stationary reaction ring, said photomultiplier being mounted on said rotating disk in a downwardly oriented direction toward the top of a respective transaprent reaction cup and said at least one optical fiber is mounted on said rotating disk between a central position of said rotating disk where a first end of the at least one optical fiber receives light from the stationary light source and a peripheral position of said rotating disk at which a second end of the at least one optical fiber terminates opposite the bottom of the respective transparent reaction cup.
Dependencies are inferred from the claim text.