Syringe with two variable volume chambers for containing and administering mixtures of products provided separately

摘要

A syringe, of the type having two variable volume chambers inside the main cylindrical body, said chambers being separated by a displacing valve assembly, and being capable of housing components which should be mixed prior to injection. The novelty resides in the special conformation of parts and elements constituting said valve assembly, which comprises two co-operating, displacing elastomer portions; one of said portions being comprised by a peripheral, hollow cylindrical body bearing on the cylindrical wall of the main body, the other portion being an inner, solid cylindrical body slidingly bearing on the inner face of the front portion. <IMAGE>