Equipment sets for the sequential administration of medical liquids at dual flow rates employing a combined air barrier and liquid sequencing valve controlled by a common flexible membrane

摘要

Equipment sets for the sequential administration of medical liquids wherein a primary liquid can be administered at a flow rate independent of the flow rate of a secondary liquid, and including a barrier substantially impervious to air to prevent the inadvertent administration of air when the secondary liquid is depleted. The sets of this invention employ a combined air barrier and liquid sequencing valve controlled by a common flexible membrane.