A portable insulin delivery device that supplies insulin in a pre-pressurized chamber, passes the insulin through a pressure-dropping labyrinth to a flow control valve. The valve is activated by a piezoelectric actuator. This allows for precise insulin delivery. An electronic package provides for programming...http://www.google.es/patents/US6736796?utm_source=gb-gplus-sharePatente US6736796 - Fluid drug delivery device
