An infusion apparatus and method employs an infusate reservoir connected by way of a first flow restrictor to a mixing chamber and a second infusate reservoir connected via a second flow path having a selected restriction characteristic to the same mixing chamber so that infusate may be conveyed to the...http://www.google.fr/patents/US4193397?utm_source=gb-gplus-shareBrevet US4193397 - Infusion apparatus and method
