Optics: measuring and testing – Blood analysis
Patent
1984-10-30
1987-07-28
McGraw, Vincent P.
Optics: measuring and testing
Blood analysis
356427, G01N 3348
Patent
active
046828877
ABSTRACT:
The viability of a pack of stored blood platelets is monitored by gripping the pack between two plates (6) and (7) which are closed to pinch together the walls of the bag (10) along an L-shaped seal (14), leaving a channel (17), squeezing a part (15) of the bag by means of a reciprocating plunger (19), so that the platelets continually flow to and fro between the part (15) and the part (16), through the channel (17), and passing a beam of light from an LED (27) through the channel (17), to a photoresistor (29). The AC signal from the photoresistor corresponds to the fluctuations in the intensity of the light passing through the channel (17) and the amplitude of this signal is representative of the viability, and hence the clinical acceptability, of the platelets.
REFERENCES:
patent: 3733136 (1975-06-01), Schuster et al.
patent: 3879129 (1975-04-01), Inoue
patent: 3891325 (1973-05-01), Porath-Furedi
patent: 3893766 (1975-07-01), Hogg
patent: 4135818 (1979-01-01), Kent et al.
patent: 4139303 (1979-02-01), Carlson et al.
patent: 4201470 (1980-05-01), Ehrly et al.
patent: 4227814 (1980-10-01), Soodak et al.
patent: 4501491 (1985-02-01), Breda et al.
patent: 4522494 (1985-06-01), Bonner
Quantitative Measurements of Platelet Shape by Light Transmission Studies; Application to Storage of Platelets for Transfusion, Stein Holme and Scott Murphy, 1978.
"Blood Platelet Aggregometer: Predicted Effects of Aggregation Photometer Geometry, and Multiple Scattering", Applied Optics, vol. 22, No. 8, Apr. 15th, 1983.
"The Functioning of Blood Platelets", Scientific American, vol. 243, No. 8, Apr. 15th, 1983.
Abstract "A New Device for Evaluation of Platelets", presented Nov. 1981.
Bellhouse Brian J.
Stairmand John W.
Bellhouse Brian J.
McGraw Vincent P.
LandOfFree
Optical assay for stored human platelets does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical assay for stored human platelets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical assay for stored human platelets will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2032525