The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 2000
Filed:
May. 06, 1998
Robert D Rosenthal, Gaithersburg, MD (US);
Futrex Inc., Gaithersburg, MD (US);
Abstract
A method and apparatus are disclosed for improving an accuracy characteristic of a quantitative measurement instrument for measuring a blood analyte concentration by using lower precision sensor devices. One embodiment of the method includes calculating a correction factor based on an elapsed time from a last meal and a substantially typical rise and fall pattern of blood analyte concentrations in the bloodstream. The correction factor is part of a regression analysis equation employed by the blood analyte measurement instrument. A second embodiment includes a method whereby a series of indicator variables are allocated based on the elapsed time from a last meal, and uses the indicator variables in a regression analysis equation. An apparatus having an introducer means for introducing an energy into blood present in a body part of a subject, a detector for detecting the energy emerging from the body part, with the detector producing an electrical signal indicative of the emerging energy, an input element for entering a time from a last meal of the subject, a storage element for storing a regression equation and a correction factor, and a processor for using the regression equation and the correction factor to yield a predicted value of the blood analyte concentration.