초록 ▼

Gravitational flow system and 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 adminis

Gravitational flow system and 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.

대표청구항 ▼

In a set for the sequential administration of medical liquids to a patient, said set including: a primary tube for the flow of a primary medical liquid therethrough and including a primary valve for controlling the flow of liquid through said primary tube, a secondary tube for the flow of a secondar

In a set for the sequential administration of medical liquids to a patient, said set including: a primary tube for the flow of a primary medical liquid therethrough and including a primary valve for controlling the flow of liquid through said primary tube, a secondary tube for the flow of a secondary medical liquid therethrough, a common tube having its distal end in fluid communication with the proximal ends of said primary and secondary tube and its proximal end open for the flow of liquid therefrom to form a primary liquid flow path comprising said primary tube and said common tube and a secondary liquid flow path comprising said secondary tube and said common tube, the improvement which comprises: a secondary flow control means in said secondary liquid flow path for adjusting the flow rate of said secondary liquid therethrough, a primary flow control means on said primary tube for adjusting the flow rate of said primary liquid through said primary flow path to a rate independent of the flow rate of said secondary liquid through said secondary liquid flow path, and an air barrier means within said secondary liquid flow path substantially impervious to air but permitting liquid flow there through while said set is in use and preventing the flow of air therethrough after said secondary liquid has been depleted, whereby, following administration of said secondary liquid, flow of said primary liquid may be resumed at the preset rate without adjustment of said primary or said secondary flow control means.