Instruments for use in the measurement of gases in body fluids

Details Instruments for use in the measurement of gases in body fluids Instruments for use in the measurement of gases in body fluids

1979-09-18

1981-06-23

Cohen, Lee S.

Surgery

Truss

Pad

128348, A61B 500

Patent

active

042744172

ABSTRACT:
An instrument for use in the measurement of gases in body fluids comprises a flexible catheter having an inner tube within an outer tube, the tubes being of such diameters that there is a substantially cylindrical passage between the tubes which can be evacuated or flushed with a non-interfering gas. Spacers can be provided in the passage, such as radial webs or a single or double helix filament.

REFERENCES:
patent: 3572315 (1971-03-01), Cullen
patent: 3658053 (1972-04-01), Fergusson et al.
patent: 3952730 (1976-04-01), Key
Key, "A Flexible Catheter . . . Tensions", Med. & Biol. Eng., vol. 13, No. 4, p. 583, Jul. 1975.
Wald et al., "Cont. Measurement . . . Spectrography", Med. & Biol. Eng., vol. 8, pp. 111-128, 1970.
Massaro et al., "Non-Polarographic Blood Gas . . .", Bio-Mat, pp. 385-396. 1976.

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