There are depicted two embodiments of an ambulatory disposable infusion delivery system in which fluid (drug) is fed to a substantially transparent receiving and retaining housing which has indicia markings conventionally applied to indicate quantity. The inflow of fluid causes an elastomeric member...http://www.google.com.au/patents/US4813937?utm_source=gb-gplus-sharePatent US4813937 - Ambulatory disposable infusion delivery system
