Parenteral administration set with internal valve and flow restrictor

摘要

A parenteral administration set, particularly for intravenous infusion of fluids, includes a drip chamber and a length of flexible intravenous tubing connected therewith. A flow controlling valve is in the length of tubing and is operable between open and closed positions from exteriorly of the tubing to obtain a desired drip rate corresponding directly with the frequency of valve operation. A fixed flow restrictor is in the length of tubing to impart a predetermined back pressure to flow through the set, whereby the rate of drop formation in the drip chamber is controlled to a value to insure that only one drop will form and fall for each valve opening.