Covidien LP

Nir Diagnostics Inc.

Niresults Inc.

Ash Kaushal

Duncan MacIntyre

Paul Endersby

George N Maracas

Romuald Pawluczyk

Bronislaw Bednarz

Mang Li

Chris Sterne

Kenneth Anthony Morand

Darin L Farrelly

A method for measuring the concentration of a compound in the blood of a part of a subject is provided. An invasive or non-invasive sample of blood may used for this determination. Also provided is a device for measuring the concentration of a compound in the blood of a subject.

Method and apparatus for measuring analytes

A method for measuring the concentration of a compound in the blood of a part of a subject is provided. An invasive or non-invasive sample of blood may be used for this determination. Also provided is a device for measuring the concentration of a compound in the blood of a subject. The device comprises a source of electromagnetic radiation, a holder, a detector and a processing system.

A device for measuring a compound with in a sample both non-invasively and invasively is provided. The devise comprised a source of electromagnetic radiation (EMR) operatively coupled to a power source, one or more receptors and a detector. The one or more receptors shaped to receive a body part and a sample holder and optically coupled to the source of EMR by one or more radiation guiding elements. The radiation guiding element comprising an input in operable association with the source of EMR, and an output in operable association with a detector and coupled to a processing system.

Modified method and apparatus for measuring analytes

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.

Apparatus and methods for compensation of blood volume effects on NIR spectroscopic measurements of blood analytes

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Mississauga, Canada

Ash Kaushal