This application deals with the problem of injection of a therapeutic or procedural fluids into a vascular system and particularly into the arteries. Commonly, these materials will be washed out quickly due to the rush of the blood in the lumen of the vessel and this prevents the best outcome...http://www.google.es/patents/US5728066?utm_source=gb-gplus-sharePatente US5728066 - Injection systems and methods
