Apparatus for evaluation of biological fluid

Optics: measuring and testing – Inspection of flaws or impurities – Bore inspection

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Details

23253R, 197127A, 250575, 250576, 356206, 356246, G01N 2124

Patent

active

RE0288004

ABSTRACT:
The apparatus comprises a plurality of stationary cuvettes, a chamber for the fluid to be evaluated, means for placing the chamber in fluid communication with each of the cuvettes and for permitting the flow of fluid from the chamber into each of the cuvettes, a plurality of optical transmitting means in registration with each of the cuvettes for transmitting a beam of radiant energy through each of the cuvettes, and detector means for intercepting each of the beams of radiant energy and for measuring any optical changes in the radiant energy passing through the fluid in each of the cuvettes.
The chamber for the fluid, the plurality of cuvettes and the fluid communication means are all housed within, preferably, a disposable, self-contained cartridge of unitary construction. The cartridge is mountable within a carriage that houses the transmitting and detector means of the apparatus. The chamber which forms the upper portion of the cartridge can be prefilled with bacterial suspension. Periodically during the growth of the subject bacteria the suspensions are agitated by suitable means. Samples of antibiotics of varying potency are placed in the cuvettes. The cartridge is mounted in the carriage. On a signal from the detector means a portion of the suspension passes into each of the cuvettes to begin the antibiotic titer which is evaluated by means of the transmitting and detector means and associated electronic circuitry.

REFERENCES:
patent: 3476515 (1969-11-01), Johnson et al.
patent: 3488156 (1970-01-01), Good et al.
patent: 3618392 (1971-11-01), Echols
patent: 3627431 (1971-12-01), Komarniski
patent: 3718439 (1973-02-01), Rosse et al.

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