A device for delivering fluid including a disposable assembly having an exit port assembly and a metering portion of a dispenser for controlling fluid flow to the exit port assembly, and a reusable assembly having a control portion of the dispenser adapted to control the metering portion of the dispenser...http://www.google.es/patents/US6749587?utm_source=gb-gplus-sharePatente US6749587 - Modular infusion device and method
