Oximeter probe with light wavelengths to avoid surgical dyes

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United States of America Patent

PATENT NO 11478170
APP PUB NO 20190320958A1
SERIAL NO

16461000

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Abstract

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A tissue oximetry device utilizes at least three or at least four different wavelengths of light for collection of reflectance data where the different wavelengths are longer than 730 nanometers. The three or four wavelengths are utilized to generate a range of reflectance data suited for accurate determination of oxygenated hemoglobin and deoxygenated hemoglobin concentrations. The relatively long wavelengths decrease optical interference from certain dyes, particularly methylene blue and PVPI, which may be present on tissue being analyzed for viability and further enhance the generation of accurate reflectance data. The wavelengths are 760 nanometers, 810 nanometers, and 850 nanometers, or 760 nanometers, 810 nanometers, 850 nanometers, and 900 nanometers.

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Patent Owner(s)

Patent OwnerAddress
VIOPTIX INCNEWARK CALIFORNIA 94560

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bechtel, Kate Leeann Pleasant Hill, US 89 763
Lloyd, Lester John Orinda, US 38 2116

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