A device for automatically administering predetermined amounts of medication from a syringe through a conduit to a patient is described. This device includes an automatic flushing mechanism which flushes the medication from the conduit after the completion of the medication dosage using a flush syringe...http://www.google.com.au/patents/US4857056?utm_source=gb-gplus-sharePatent US4857056 - Auto-flush syringe pump
