A one-way valve assembly can be fitted to the end of a syringe to allow fluid to flow from the syringe and into a body cavity but to prevent backflow. The valve assembly is opened by insertion of the luer tip of the syringe into the assembly inlet. The valve has an internal elastic member that forms...http://www.google.fr/patents/US20060108555?utm_source=gb-gplus-shareBrevet US20060108555 - Valve for use with a syringe and which prevents backflow
Valve for use with a syringe and which prevents backflow
