A device for infusing a secondary fluid through a primary fluid administration set without mixing the primary and secondary fluids is disclosed. Two pistons which are releasably locked in tandem slide within a chamber having an output port, dividing the chamber into two portions. The portion having the...http://www.google.es/patents/US4685910?utm_source=gb-gplus-sharePatente US4685910 - Apparatus and method for delivering secondary fluids to a patient using an intravenous administration set feeding a primary fluid
Apparatus and method for delivering secondary fluids to a patient using an ...
