Apparatus for determining the concentration of a light-absorbing

Details Apparatus for determining the concentration of a light-absorbing Apparatus for determining the concentration of a light-absorbing

1987-10-29

1989-05-23

McGraw, Vincent P.

Optics: measuring and testing

Blood analysis

Hemoglobin concentration

128633, G01N 3348

Patent

active

048324841

ABSTRACT:
An apparatus for determining the concentration of a light-absorbing material contained in blood flowing through a tissue which minimizes the amount of error caused by noise and which ensures highly precise results at all times. The apparatus operates according the principle that light beams of different wavelengths are absorbed by different amounts when passing through the tissue at different portions of the blood pulsation cycle. A plurality of points are detected that fall in the vicinity of the peak and trough of a cycle of a light detection signal. For each wavelength of light, the values of the detection signals produced at each of these points in time is stored. The concentration of the light-absorbing material is computed in response to the stored detection signals.

REFERENCES:
patent: 3998550 (1976-12-01), Konishi et al.
patent: 4167331 (1979-09-01), Nielsen
patent: 4714341 (1987-12-01), Hamaguri et al.
I. Yoshiya, Y. Shimada, K. Tanaka, Spectrophotometric Monitoring of Arterial Oxygen Saturation, Med. & Bio. Eng. & Comp., pp. 27-32, 1-80.

Affiliated with

Also associated with

Rating

Apparatus for determining the concentration of a light-absorbing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for determining the concentration of a light-absorbing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for determining the concentration of a light-absorbing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1726610