MIT Development Corporation

Home Diagnostics, Inc.

Gregory P Paolini

G Thomas Roth

Brent E Modzelewski

A method and apparatus for strip insertion detection in an analytical meter system. The invention allows for individual meter calibration, adaptive thresholding and ambient light correction. Increased performance is economically realized, while providing enhanced meter accuracy in varying light conditions.

Method of strip insertion detection

An apparatus for enhancing the analysis of light reflected from a blood exposed reagent is described. Light from sources, such as LED's, is used to detect the levels of glucose and fructosamine in the blood exposed reagent. A special optical arrangement is used to obtain optical signals indicative of the optically sensitive chemicals in the reagent. The optical beams from respective LED's are directed at a common surface of an optical element used to redirect the light onto the reagent and reflect portions onto a reference detector. A main detector is strategically located adjacent a surface of the optical element to detect reflections from the reagent. A control circuit is described with which the light from the LED light sources can be held at substantially constant levels despite factors tending to cause light level changes.

Blood fluid characteristics analysis instrument

An apparatus for enhancing the analysis of light reflected from a blood exposed reagent is described. Light from sources, such as LED's, is used to detect the levels of glucose and fructosamine in the blood exposed reagent. A special optical arrangement is used ot obtain optical signals indicative of the optically sensitive chemicals in the reagent. The optical beams from respective LED's are directed at a common surface of an optical element used to redirect the light onto the reagent and reflect portions onto a reference detector. A main detector is strategically located adjacent a surface of the optical element to detect reflections from the reagent. A control circuit is described with which the light from the LED light sources can be held at substantially constant levels despite factors tending to cause light level changes.

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Norwalk, CT, United States of America

Gregory P Paolini