Method of loading and discharging a drip chamber

Details Method of loading and discharging a drip chamber Method of loading and discharging a drip chamber

1988-02-01

1989-06-27

Truluck, Dalton L.

Surgery

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

Treating material introduced into or removed from body...

604126, 604251, A61M 516

Patent

active

048425885

ABSTRACT:
A flexible tube is mounted on top of the drip chamber. The top of the tube is connected to the spike via a one-way ball-type valve. The bottom of the tube is connected to the drip chamber via a duck-bill-type valve inside of the drip chamber. The duck-bill is held closed against head pressure by a metal spring clip acting on the lip. The duck-bill will open when the tube is squeezed and fluid will be injected into the drip chamber.
The drip chamber is charged bubble-free by the use of an output tube open to the chamber and joined to the flexible tubing carrying the hypodermic needle. During the initial fill the output tube is positioned above the fluid level and air in the chamber vented via the output tube, the flexible tubing and the hypodermic needle. When the desired level is reached, the output tube is submerged and bubble-free fluid fills the output tube, the flexible tubing, and the hypodermic needle.

REFERENCES:
patent: 2648333 (1953-08-01), Cutter
patent: 2729212 (1956-01-01), Butler
patent: 2786467 (1957-03-01), Price
patent: 2844147 (1958-07-01), Beacham
patent: 2879784 (1959-03-01), Cutter
patent: 3030954 (1962-04-01), Thornton, Jr.
patent: 4009714 (1977-03-01), Hammer
patent: 4173222 (1979-11-01), Muetterties

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