Automatic injection syringe, for mixture of two or more substances, has lock to prevent injection before mixing of substances is complete

摘要

The syringe (10) comprises a body (60) in two moving sections (64, 66) containing two or more substances (36, 38) to be mixed before injection by an automatic mechanism (70, 72) with an interlock (73). It incorporates a lock engaging elastically by means of hooks with the interlock to prevent it from being released before the mixing of the two substances is complete.