A hand-held and operated pneumatically powered device for injecting fluids, such as in medical applications, consisting of a housing that is sized and shaped to be hand held, and connected power and infusion assemblies contained within the housing. The power assembly includes a sealed vessel containing...http://www.google.com.au/patents/US4944726?utm_source=gb-gplus-sharePatent US4944726 - Device for power injection of fluids
