Dual channel photo-optical clot detection apparatus

Details Dual channel photo-optical clot detection apparatus Dual channel photo-optical clot detection apparatus

1975-01-08

1976-07-13

Serwin, R.E.

Chemistry: physical processes

Physical processes

Crystallization

23230B, 356246, 356 39, G01N 3316, G01N 2124

Patent

active

039690792

ABSTRACT:
A dual channel photo-optical clot detection system for the automatic determination of prothrombin times and activated partial thromboplastin times and other related coagulation tests. A circular tray is utilized, and is vacuum formed to provide cuvettes having uniform wall thicknesses in two circular paths and arranged with radially aligned cuvettes. A single light source is placed between the radial spaced cuvettes and thus provides a common source for two separate detectors measuring the clot time of samples in each cuvette. The automatic dual channel operation provides a fixed time for activated partial thromboplastin time test so that fixed incubation time for the tests can be obtained. Thus, the sample to be tested is maintained at a low temperature until only two stations before measurement, and, accordingly, fixed incubation periods can be determined and exact conditions can be maintained for accurate testing.

REFERENCES:
patent: 3477822 (1969-11-01), Hamilton
patent: 3540858 (1970-11-01), Rochte et al.
patent: 3542515 (1970-11-01), Scott
patent: 3607099 (1971-09-01), Scordato
patent: 3622279 (1971-11-01), Moran

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