Flow cell fluid and sample supply mechanism

Details Flow cell fluid and sample supply mechanism Flow cell fluid and sample supply mechanism

1978-07-06

1980-05-13

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

204195P, 204195G, G01N 2746

Patent

active

042027470

ABSTRACT:
Apparatus for automatically and selectively supplying a blood sample or a wash/calibration solution to the entrance port of a flow cell which measures characteristics of the sample such as pH, pCO.sub.2 and pO.sub.2. A sample filled syringe and a solution supply conduit are supported by respective first and second fluid delivery mechanisms which rotate to move the syringe outlet and the conduit outlet in generally arcuate paths toward and away from the flow cell entrance port. The delivery mechanisms are rotated simultaneously, one toward and one away from the entrance port, by a common drive gear. Seating of the wash solution outlet in the entrance port is upstream of the seating of the sample outlet to ensure complete flushing of sample from the entrance port by the wash solution.

REFERENCES:
patent: 3776184 (1973-12-01), Harrison
patent: 3817425 (1974-06-01), Liston
patent: 3853008 (1974-12-01), Hoffa et al.
patent: 3997420 (1976-12-01), Buzza
patent: 4006736 (1977-02-01), Kranys et al.
patent: 4048040 (1977-09-01), Schwartz

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