A binary connector intercouples a plugged drug vial and a plugged, flexible-walled diluent container so that the diluent can pass to the vial from the container only after the latter has been pressurized by squeezing. Sharp-tipped, hollow spikes with intercommunicating axial bores extend in diametrically...http://www.google.es/patents/US5526853?utm_source=gb-gplus-sharePatente US5526853 - Pressure-activated medication transfer system
