Blood gas catheter

Details Blood gas catheter Blood gas catheter

1975-09-08

1977-04-12

Howell, Kyle L.

Surgery

Truss

Perineal

23230B, 23254R, 128 2F, 128 2L, A61B 500

Patent

active

040168646

ABSTRACT:
An instrument for withdrawing equilibrated blood gases in vivo, which comprises a tubular gas permeable membrane inserted through a cannular into the blood stream. In preferred form, the tubular membrane comprises a continuous conduit in contact with the blood. An inlet supply gas terminal is constructed for connection to a carrier gas source, and an outlet gas terminal, for connection to an appropriate analyzer. In preferred forms of the invention, a heater maintains the equilibrated gases at above normal body temperature as they pass to the analyzer; and a port is provided for drawing blood samples from the area being analyzed without dislodging the catheter.

REFERENCES:
patent: 3512517 (1970-05-01), Kadish et al.
patent: 3572315 (1971-03-01), Cullen
patent: 3640269 (1972-02-01), Delgado
patent: 3658053 (1972-04-01), Fergusson et al.
patent: 3664178 (1972-05-01), Spergel et al.
patent: 3824157 (1974-07-01), Macur
Med. & Biol. Engng., vol. 8, No. 2, pp. 111-128, (1970).
Journ. Of Thoracic & Cardiovascular Surg., vol. 62, No. 6, Dec. 1971, pp. 844-850.

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