Red blood cell spillover detection technique

Details Red blood cell spillover detection technique Red blood cell spillover detection technique

1998-03-30

1999-08-10

Kim, Robert H.

Optics: measuring and testing

Blood analysis

G01N 3348

Patent

active

059367148

ABSTRACT:
An apparatus and a method are provided to monitor a generally transparent blood tube at a location that is downstream from a blood separator in order to detect the presence of red blood cells in a tube that is intended to carry a different blood component, for example platelets. A red light source and a green light source are located in relation to the tube so that red light emission and green light emission are directed toward the tube and toward the flowing blood component(s) that is carried within the tube. The red light source produces a red reflection intensity from red blood cells whose magnitude increases as a function of an increase in the concentration of red blood cells. The green light source produces a green reflection intensity from the red blood cells whose magnitude decreases as a function of an increase in the concentration of the red blood cells. These two light reflections are sensed by means of one broadband photodetector, or by two band-specific photodetectors, that are located on the same side of the tube, so as to be responsive only to reflected light. An output is provided by detecting the ratio of the magnitude of the red reflection intensity to the magnitude of the green reflection intensity.

REFERENCES:
patent: Re29141 (1977-02-01), Hogg
patent: 3236602 (1966-02-01), Isreeli
patent: 3527542 (1970-09-01), Penhasi et al.
patent: 3751173 (1973-08-01), Sanz et al.
patent: 4227814 (1980-10-01), Soodak et al.
patent: 4229179 (1980-10-01), Lee
patent: 4444498 (1984-04-01), Heinemann
patent: 4522494 (1985-06-01), Bonner
patent: 4577964 (1986-03-01), Hansen, Jr.
patent: 4745279 (1988-05-01), Karkar et al.
patent: 4810090 (1989-03-01), Boucher et al.
patent: 4834890 (1989-05-01), Brown et al.
patent: 5047652 (1991-09-01), Lisnyansky et al.
patent: 5141303 (1992-08-01), Yamamoto
patent: 5372136 (1994-12-01), Steuer et al.
patent: 5437598 (1995-08-01), Antwiler
patent: 5653887 (1997-08-01), Wahl et al.
patent: 5734464 (1998-03-01), Gibbs
patent: 5769811 (1998-06-01), Stacey et al.

Affiliated with

Also associated with

Rating

Red blood cell spillover detection technique does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Red blood cell spillover detection technique, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Red blood cell spillover detection technique will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1125390