초록 ▼

In a parenteral solution administration set, the porous hydrophilic filter member which can control the liquid level and prevent the passage of gas downwardly through the set can be located adjacent the lower end of the drip chamber to control flow out of the lower end and to be submerged in liquid

In a parenteral solution administration set, the porous hydrophilic filter member which can control the liquid level and prevent the passage of gas downwardly through the set can be located adjacent the lower end of the drip chamber to control flow out of the lower end and to be submerged in liquid held in the drip chamber during operation thereof. Significant advantages are obtained. Particularly, the set becomes conveniently usable with parenteral solution pumps. Also the drip chamber may contain an elongated member projecting inwardly of the lower end of the chamber and carrying indicia along its length to indicate liquid volume in the chamber as a function of liquid level.

대표청구항 ▼

A parenteral solution administration set having tubular means for conveying solution from a supply source toward the vascular system of a patient, comprising: a metering chamber measuring aliquots of solution for administration; a drip chamber connected to said metering chamber and having upper and

A parenteral solution administration set having tubular means for conveying solution from a supply source toward the vascular system of a patient, comprising: a metering chamber measuring aliquots of solution for administration; a drip chamber connected to said metering chamber and having upper and lower ends positioned below said metering chamber; said drip chamber including, at its lower end, a porous, hydrophilic filter member having a pore size sufficiently small to prevent air at a predetermined maximum pressure from passing through said filter member when wet, while permitting the flow of parenteral solution therethrough, said filter member being operative at the lower end of the drip chamber to control flow out of said lower end and to be submerged by liquid held in the drip chamber during operation thereof; said metering chamber and drip chamber being free of any air-blocking membrane therebetween, whereby back priming of the set is enabled.