A medication infusion pump is provided for controlled delivery of medication to a patient, wherein the pump includes a space-efficient flexible drive plunger for advancing a piston within a medication-containing syringe or cartridge for administration of the medication to a patient. The infusion pump...http://www.google.com.au/patents/US5637095?utm_source=gb-gplus-sharePatent US5637095 - Medication infusion pump with flexible drive plunger