Noninvasive pulsed infrared spectrophotometer

Details Noninvasive pulsed infrared spectrophotometer Noninvasive pulsed infrared spectrophotometer

1993-01-28

1994-05-24

Sykes, Angela D.

Surgery

Truss

Pad

128664, 128666, 128667, 356 41, A61B 500

Patent

active

053139410

ABSTRACT:
A method and apparatus for monitoring glucose, ethyl alcohol and other blood constituents in a noninvasive manner. The measurements are made by monitoring infrared absorption of the desired blood constituent in the long infrared wavelength range where the blood constituent has a strong and distinguishable absorption spectrum. The long wavelength infrared energy is passed through a finger or other vascularized appendage and the measurement made. To prevent the high energy source from burning or causing patient discomfort, only short bursts or pulses of energy are sent through the finger with a very low duty cycle and low optical bandwidth. The bursts are further synchronized with systole and diastole of the cardiac cycle so that only two pulses are sent per heart beat, one during diastole and one during systole. The detection signals measured during application of these bursts of energy are then used to calculate the concentration of the blood constituents in accordance with a polynomial equation.

REFERENCES:
patent: 3958560 (1976-05-01), March
patent: 4223680 (1980-09-01), Jobsis
patent: 4281645 (1981-08-01), Jobsis
patent: 4407290 (1983-10-01), Wilber
patent: 4655225 (1987-04-01), Dahne et al.
patent: 4714080 (1987-12-01), Edgar, Jr. et al.
patent: 4819752 (1989-04-01), Zelin
patent: 4934372 (1990-06-01), Corenman et al.
patent: 4960126 (1990-10-01), Conlon et al.
patent: 5009230 (1991-04-01), Hutchinson
patent: 5028787 (1991-07-01), Rosenthal et al.
patent: 5078136 (1992-06-01), Stone et al.
patent: 5081998 (1992-01-01), Yelderman et al.
patent: 5095913 (1992-03-01), Yelderman et al.
patent: 5111817 (1992-05-01), Clark et al.
patent: 5137023 (1992-08-01), Mendelson et al.

Affiliated with

Also associated with

Rating

Noninvasive pulsed infrared spectrophotometer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Noninvasive pulsed infrared spectrophotometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noninvasive pulsed infrared spectrophotometer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1966337