HYPODERMIC INJECTION SYRINGE PROVIDED WITH A PLUNGER ABLE TO RETRACT AND CONTAIN THE HYPODERMIC NEEDLE AFTER USE

摘要

The disclosed syringe includes a hooking device which, when the plunger reaches the end of stroke, binds to the hypodermic needle and a pneumatic control element, preferably of the vacuum type, arranged to introduce the needle in an appropriate room in the plunger after use.