Instrument for use in the measurement of blood gases

Details Instrument for use in the measurement of blood gases Instrument for use in the measurement of blood gases

1974-10-22

1976-04-27

Howell, Kyle L.

Surgery

Truss

Perineal

128 2L, 128214R, 128348, A61B 500

Patent

active

039527301

ABSTRACT:
A catheter instrument for use in the continuous measurement of blood gases in vivo by mass spectrometry comprises a flexible mylon tube internally coated with a material such as polyurethane which inhibits outgassing of water vapour from the nylon. A porous body is secured in one end of the tube and has a smoothly rounded projecting portion covered by a gas-permeable membrane. The membrane forms an integral part of a sheath having a further part which fits closely around the nylon tube, the sheath being of a non-thrombogenic polymeric material such as silicone rubber.

REFERENCES:
patent: 3336918 (1967-08-01), Jeckel
patent: 3512517 (1970-05-01), Kadish et al.
patent: 3572315 (1971-03-01), Cullen
patent: 3658053 (1972-04-01), Fergusson et al.
patent: 3726825 (1973-04-01), Woodward et al.
wald, A. et al., Med. & Biol. Engng. Vol. 8, 1970, pp. 111-128.

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