Digital glucose analyzer

• US 3,920,969 A
• Filed: 01/31/1974
• Issued: 11/18/1975
• Est. Priority Date: 01/31/1974
• Status: Expired due to Term

• Current Assignee: Robert E. Berglas
• Original Assignee: Robert E. Berglas
• Inventors: Berglas, Robert E.
• Primary Examiner(s): Morrison, Malcolm A.
• Assistant Examiner(s): Krass, Errol A.
• Application Number:
  US05/438,465
• Time in Patent Office: 656 Days
• Field of Search: 235/151.3,151.35 23/23B,253R,DIG.2 204/195R,195B,1T 235/151.12 340/236,347AD,347NT 128/2,2.1
• US Class Current: 204/403.14
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/207 Sensing devices adapted to collect urine
• CPC Class Codes: G01N 27/3273 Devices therefor, e.g. test element readers, circuitry details not specific to biochemical electrodes G01N33/4875
• CPC Class Codes: Y10T 436/144444 Glucose

Abstract

A system for producing a display of the amount of glucose in a urine or serum sample including conventional sense and reference electrode adapted for placement in a urine or serum sample to produce a differential voltage signal which varies as a function of the amount of glucose in the sample, an amplifier to amplify this differential voltage, an analog to digital converter for providing a binary output, conventional binary coded decimal to seven segment decoder/driver circuits which provide outputs to incandescent displays which can provide seven segment outputs in any desired colors.

Claims

1. A system for producing a display of glucose in solution comprising:

a sense and reference electrode adapted for placement in a container of solution for producing a differential voltage which varies as a function of the amount of glucose in said solution, means connected to said electrodes for amplifying said differential voltage and providing an amplified analog signal including a first differential amplifier having one polarity input connected to said reference electrode and an output, a second differential amplifier having one polarity input connected to said sense electrode and an output, a third differential amplifier having one polarity input connected to said output of said first differential amplifier and the other polarity connected to said output of said second differential amplifier and having an output providing said amplified, analog signal. means connected to said amplifying and providing means for converting said analog signal into a digital signal including a tracking analog to digital signal converter having counter means and providing a binary output, a binary to binary coded decimal converter connected to said analog to digital signal converter for converting said binary output into a binary coded decimal output, and a binary coded decimal to 7 segment Decoder/Driver connected to said binary to binary coded decimal converter for converting said binary coded decimal output into a 7 segment signal, and display means connected to said converting means for receiving said digital signal and producing a visual display of the glucose value associated with said digital signal wherein said display means includes two, 7-segment, incandescent display units.