METHOD AND SYSTEM FOR MEASURING LACTATE LEVELS IN VIVO

Title:

METHOD AND SYSTEM FOR MEASURING LACTATE LEVELS IN VIVO

Document Type and Number:

WIPO Patent Application WO2004097365

Kind Code:

A3

Abstract:

There is described a system and method for the in vivo determination of lactate levels in blood using Near-Infrared Spectroscopy (NIRS)and/or Near-infrared Raman Spectroscopy (NIR-RAMAN). The method teaches measuring lactate in vivo comprising: optically coupling a body part (14) with a light source (10) and a light detector (18) the body part having tissues comprising blood vessels; injecting near-infrared (NIR) light at one or a plurality of wavelengths in the body part; detecting, as a function of blood volume variations in the body part, light exiting the body part at at least the plurality of wavelengths to generate an optical signal (20); and processing the optical signal as a function of the blood volume variations to obtain a lactate level in blood.

Inventors:

BURNS DAVID H (CA)
LAFRANCE DENIS (CA)
LANDS LARRY (CA)

Application Number:

PCT/IB2004/001317

Publication Date:

December 16, 2004

Filing Date:

April 30, 2004

Export Citation:

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Assignee:

UNIV MCGILL (CA)
BURNS DAVID H (CA)
LAFRANCE DENIS (CA)
LANDS LARRY (CA)

International Classes:

A61B5/00; G01J3/427; G01J3/44; G01J3/453; G01N21/35; G01N21/65; G01N21/31; G01N; (IPC1-7): G01N21/35

Domestic Patent References:

WO2001016577A1	2001-03-08
WO2001016578A1	2001-03-08

Foreign References:

US5459317A	1995-10-17
US20020151774A1	2002-10-17
US6438397B1	2002-08-20

Other References: