Drip chamber for infusion apparatus

Details Drip chamber for infusion apparatus Drip chamber for infusion apparatus

1988-09-02

1992-04-07

Pellegrino, Stephen C.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

222464, 137590, 604122, A61M 5165

Patent

active

051024004

ABSTRACT:
Liquid infusion apparatus comprises a drip chamber in which an outlet tube projecting into the chamber is enclosed by a cap including a side wall enclosing the upper portion of the outlet tube. The cap side wall has an inner diameter which is substantially largre than the outer diameter of the outlet tube, to thereby define a large passageway at the entrance of the outlet tube. This passageway substantially reduces the flow velocity of the liquid at its interface with the air in the drip chamber, and thereby substantially eliminates the possibility of air bubbles being trapped within the liquid fed through the outlet tube under high rates of liquid flow and under exceptionally rough handling conditions, such as when the transfusion is being administered while the patient is in a helicopter or in a land vehicle.

REFERENCES:
patent: 1127387 (1915-02-01), Alger
patent: 3045872 (1962-07-01), Hronas et al.
patent: 3285478 (1966-11-01), Gordon
patent: 3385483 (1968-05-01), Gilwood
patent: 3744492 (1973-07-01), Leibinsohn
patent: 4203463 (1980-05-01), Ponlot et al.

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