Clinical testing apparatus

Details Clinical testing apparatus Clinical testing apparatus

1976-01-02

1977-09-13

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

204195M, 23253R, 73423A, G01N 2746

Patent

active

040480402

ABSTRACT:
The testing apparatus is preferably for the measurement of ionized calcium and other ions in biologic fluids. The apparatus generally comprises a turntable that is incrementally operated, a cover overlying the turntable, a housing for supporting the turntable and cover and a plurality of sample cups carried by the turntable. At one area of the cover there is defined a probe station having means supporting a plurality of probes which sample the fluid in the cups and generate electrical signal responsive to sensed ions which signal may be a high impedance signal. The electrical signal is coupled preferably via a coaxial cable to a relay device and from thence to an electrometer external of the apparatus. The relay device and other electrical or conductive components are isolated from chassis ground to improve signal transmission. A special shield dome covers the turntable, cover and probe assembly and this shield dome is the only part above the housing that is grounded. The dome has a lower position resting on the housing top and an upper position which permits access to the turntable. The dome is transparent as are the individual probes.

REFERENCES:
patent: 1990768 (1935-02-01), Youden
patent: 2563062 (1951-08-01), Perley
patent: 2879141 (1959-03-01), Skeggs
patent: 3074699 (1963-01-01), Skeggs et al.
patent: 3429785 (1969-02-01), Ross
patent: 3649504 (1972-03-01), Evans et al.
patent: 3684452 (1972-08-01), Bessman
patent: 3941565 (1976-03-01), Schwartz
patent: 3994171 (1976-11-01), Schwartz

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