Apparatus for the determination of the partial pressure of gases

Details Apparatus for the determination of the partial pressure of gases Apparatus for the determination of the partial pressure of gases

1989-01-05

1991-10-22

Noland, Tom

Measuring and testing

Gas content of a liquid or a solid

128632, A61B 500

Patent

active

050584162

ABSTRACT:
An apparatus for determining the partial pressure of a gas dissolved in a fluid which includes a catheter consisting of a double bored coaxial catheter having an outer tube and a spaced coaxial inner tube, the outer tube being permeable to the gas being measured, together with a pump for delivering a continuous flow of a carrier fluid into the space between the inner tube and the outer tube. A measuring device is located downstream of the catheter for determining the partial pressure of the gas in the carrier fluid. A mass transfer unit receives the gas after the measuring device and is arranged to bring the partial pressure of the gas in the carrier fluid to a predetermined value.

REFERENCES:
patent: 3518982 (1970-07-01), Timmins et al.
patent: 3658053 (1972-04-01), Fergusson et al.
patent: 3983864 (1976-10-01), Sielaff et al.
patent: 4274417 (1981-06-01), Delpy
patent: 4516580 (1985-05-01), Polanyi
Massaro et al., Non-Polarographic Blood Gas Analysis, In Biomat. Med. Dev., vol. 4:(3-4), pp. 385-396, 1976.

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