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:
Nov. 03, 2009
Filed:
Dec. 22, 2003
George N. Maracas, Phoenix, AZ (US);
Romuald Pawluczyk, Conestogo, CA;
Duncan Macintyre, Campbellville, CA;
Bronislaw Bednarz, Toronto, CA;
Darin L. Farrelly, Fergus, CA;
Chris Sterne, London, CA;
Ash Kaushal, Mississauga, CA;
Mang LI, Waterloo, CA;
Kenneth Anthony Morand, Fergus, CA;
George N. Maracas, Phoenix, AZ (US);
Romuald Pawluczyk, Conestogo, CA;
Duncan MacIntyre, Campbellville, CA;
Bronislaw Bednarz, Toronto, CA;
Darin L. Farrelly, Fergus, CA;
Chris Sterne, London, CA;
Ash Kaushal, Mississauga, CA;
Mang Li, Waterloo, CA;
Kenneth Anthony Morand, Fergus, CA;
NIResults Inc., , CA;
Abstract
The present invention provides a method for measuring a blood analyte concentration of a body part comprising removing a portion or all of the blood from the body part to produce a modified body part, and recording a first absorbance value of the modified body part. This is followed by filling the body part with blood to produce a filled body part, and recording a second absorbance value of the filled body part. A difference spectrum is obtained by subtracting the first absorbance values from the second absorbance values, and a calibration algorithm for the blood analyte is applied to the difference spectrum, thereby measuring the concentration of the blood analyte. Also provided is an apparatus for determining the concentration of a blood analyte of a body part. The apparatus comprising a chamber of a size and shape to receive the body part, where the chamber comprises an element for withdrawing and reintroducing blood from the body part, when the body part is inserted within the chamber. The chamber also comprising one or more than one port for introducing electromagnetic radiation into the chamber and onto that body part, and collecting remaining electromagnetic radiation following interaction with the body part.