An improved needle-free intravenous injection port assembly is disclosed. Embodiments include a boot valve with a helical surface, a boot valve and septum which mate with mechanical interference, a spike with a rough outer surface coated with a lubricant, a septum having a shoulder and a single continuous...http://www.google.fr/patents/US7530546?utm_source=gb-gplus-shareBrevet US7530546 - Swabbable needle-free injection port valve system with zero fluid displacement
Swabbable needle-free injection port valve system with zero fluid displacement
