A metering apparatus and system for controlling the administration of intravenous fluids (IV) having a flow passage within a housing connectable to a source of IV fluid and to a delivery tube terminating at an administration needle. In the metering apparatus, a metering pin is axially moveable within...http://www.google.es/patents/US4361147?utm_source=gb-gplus-sharePatente US4361147 - Flow control device for administration of intravenous fluids
Flow control device for administration of intravenous fluids
