Method for spectrophotometric blood oxygenation monitoring

Surgery – Diagnostic testing – Measuring or detecting nonradioactive constituent of body...

Reexamination Certificate

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Reexamination Certificate

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07072701

ABSTRACT:
A method and apparatus for non-invasively determining the blood oxygen saturation level within a subject's tissue is provided that utilizes a near infrared spectrophotometric (NIRS) sensor capable of transmitting a light signal into the tissue of a subject and sensing the light signal once it has passed through the tissue via transmittance or reflectance. The method includes the steps of: (1) transmitting a light signal into the subject's tissue, wherein the transmitted light signal includes a first wavelength, a second wavelength, and a third wavelength; (2) sensing a first intensity and a second intensity of the light signal, along the first, second, and third wavelengths after the light signal travels through the subject at a first and second predetermined distance; (3) determining an attenuation of the light signal for each of the first, second, and third wavelengths using the sensed first intensity and sensed second intensity of the first, second, and third wavelengths; (4) determining a difference in attenuation of the light signal between the first wavelength and the second wavelength, and between the first wavelength and the third wavelength; and (5) determining the blood oxygen saturation level within the subject's tissue using the difference in attenuation between the first wavelength and the second wavelength, and the difference in attenuation between the first wavelength and the third wavelength.

REFERENCES:
patent: 3638640 (1972-02-01), Shaw
patent: 3674008 (1972-07-01), Johnson
patent: 4105021 (1978-08-01), Williams et al.
patent: 4206764 (1980-06-01), Williams
patent: 4223680 (1980-09-01), Jobsis
patent: 4281645 (1981-08-01), Jobsis
patent: 4321930 (1982-03-01), Jobsis et al.
patent: 4380240 (1983-04-01), Jobsis et al.
patent: 4510938 (1985-04-01), Jobsis et al.
patent: 4570638 (1986-02-01), Stoddart et al.
patent: 4621643 (1986-11-01), New, Jr. et al.
patent: 4690492 (1987-09-01), Beard
patent: 4700708 (1987-10-01), New, Jr. et al.
patent: 4725147 (1988-02-01), Stoddart
patent: 4768516 (1988-09-01), Stoddart et al.
patent: 4770179 (1988-09-01), New, Jr. et al.
patent: 4805623 (1989-02-01), Jöbsis
patent: 4817623 (1989-04-01), Stoddart et al.
patent: 4848901 (1989-07-01), Hood, Jr.
patent: 4865038 (1989-09-01), Rich et al.
patent: 4907876 (1990-03-01), Suzuki et al.
patent: 4913150 (1990-04-01), Cheung et al.
patent: 4942877 (1990-07-01), Sakai et al.
patent: 5054488 (1991-10-01), Muz
patent: 5057695 (1991-10-01), Hirao et al.
patent: 5058588 (1991-10-01), Kaestle
patent: 5080098 (1992-01-01), Willett et al.
patent: 5088493 (1992-02-01), Giannini et al.
patent: 5139025 (1992-08-01), Lewis et al.
patent: 5140989 (1992-08-01), Lewis et al.
patent: 5153669 (1992-10-01), DeGroot
patent: 5217013 (1993-06-01), Lewis et al.
patent: 5218962 (1993-06-01), Mannheimer et al.
patent: 5277181 (1994-01-01), Mendelson et al.
patent: 5349961 (1994-09-01), Stoddart et al.
patent: 5353791 (1994-10-01), Tamura et al.
patent: 5421329 (1995-06-01), Casciani et al.
patent: 5465714 (1995-11-01), Scheuing
patent: 5477853 (1995-12-01), Farkas et al.
patent: 5482034 (1996-01-01), Lewis et al.
patent: 5517987 (1996-05-01), Tsuchiya
patent: 5520177 (1996-05-01), Ogawa et al.
patent: 5524617 (1996-06-01), Mannheimer
patent: 5529065 (1996-06-01), Tsuchiya
patent: 5542421 (1996-08-01), Erdman
patent: 5584296 (1996-12-01), Cui et al.
patent: 5632273 (1997-05-01), Suzuki
patent: 5661302 (1997-08-01), Evans et al.
patent: 5676142 (1997-10-01), Miwa et al.
patent: 5694931 (1997-12-01), Tsuchiya
patent: 5697367 (1997-12-01), Lewis et al.
patent: 5720284 (1998-02-01), Aoyagi et al.
patent: 5729333 (1998-03-01), Osten et al.
patent: 5746206 (1998-05-01), Mannheimer
patent: 5752914 (1998-05-01), Delonzor et al.
patent: 5758644 (1998-06-01), Diab et al.
patent: 5770454 (1998-06-01), Essenpreis et al.
patent: 5782755 (1998-07-01), Chance et al.
patent: 5795292 (1998-08-01), Lewis et al.
patent: 5803909 (1998-09-01), Maki et al.
patent: 5853370 (1998-12-01), Chance et al.
patent: 5879294 (1999-03-01), Anderson et al.
patent: 5902235 (1999-05-01), Lewis et al.
patent: 5987351 (1999-11-01), Chance
patent: 6192260 (2001-02-01), Chance
patent: 6615065 (2003-09-01), Barrett et al.
patent: 2005/0119542 (2005-06-01), Stoddart et al.

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