A safety syringe (11) is disclosed. The safety syringe has a retractableneedle facility (14/15) incorporated therein, the syringe comprising a barrel(12) and plunger (13) and needle assembly. The needle is caused to retractinto the barrel of the syringe upon completion of injection once it has beenused, by means of engagement between the needle assembly and the end of theplunger. Locking means (28) preferably in the form of a locking bush isprovided in the body of the syringe to engage the plunger once it is retractedafter use, so that the syringe is rendered incapable of being used further.
