Fluid metering device

Claim 1

Metering apparatus for controlling the amounts of and types of parenteral fluids administered to patients from containers through plastic tubing, said apparatus comprising a valve body, a plurality of valve chambers integral to and contained within said valve body, a first fluid passageway connecting said valve chambers with outlet means, said valve body consisting of a first section and a second section, said sections defining said fluid passageway, sealing means integral to each of said sections for sealing the passageway where said sections abut each other to form said passageway, a valve stem threadably engaged to said first section within each of said valve chambers and adapted for precise movement within said valve chamber, O-ring seal means contiguous to said valve stem, at least one inlet fitting per valve chamber in said second section, said inlet fittings adapted for engagement with the flexible tubing and having an inlet fluid passageway therein communicating with each of said valve chambers, said inlet fittings being coaxial with said valve stem in each of said valve chambers, an outlet fitting on said body adapted for engagement with the flexible tubing and having an outlet fluid passageway directly therein connecting with said first fluid passageway, and handle means for adjusting said valve stems within said valve chambers between an open and closed position to determine the flow through said metering apparatus.