Stilligout or dropper particularly for infusion apparatus

Details Stilligout or dropper particularly for infusion apparatus Stilligout or dropper particularly for infusion apparatus

1976-08-25

1979-03-13

Truluck, Dalton L.

Surgery

Respiratory method or device

Ozone or ion generation

141113, 222420, A61M 0516

Patent

active

041436598

ABSTRACT:
A dropper for infusion liquid particularly for connecting an infusion bag to a catheter comprising a dropper housing defining an interior dropper chamber having an inlet connected at the top of the dropper chamber and an outlet tube extending into the chamber on a side opposite from the inlet. A deaeration opening is provided in association with the outlet tube for venting the interior of the chamber when the chamber is inverted into a filling position. The deaeration opening is positioned within the chamber at a level sufficient to define a first air volume bounded by a plane tangent to the deaeration opening and a portion of the dropper chamber above the plane, which volume is smaller than the remaining volume of the dropper chamber. A second volume is defined by a plane tangent to an opening of the inlet within the dropper chamber and a portion of the dropper chamber above the opening. The opening of the inlet is positioned so that the second volume is smaller than the first volume defined by the deaeration opening. When the dropper chamber is returned to an upright position after having been filled in an inverted position the difference between the first and second aforementioned volume provides a safety level of liquid above the outlet tube within the dropper chamber.

REFERENCES:
patent: 2675000 (1954-04-01), Ford
patent: 2729212 (1956-01-01), Butler
patent: 2844147 (1958-07-01), Beacham
patent: 3521635 (1970-07-01), Koehn
patent: 3744492 (1973-07-01), Leibinsohn
patent: 3941126 (1976-03-01), Dietrich et al.

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