A retractable needle-type syringe having a maximum amount of safety features, including maintaining the needle of the syringe in a retracted and totally shielded position prior to use. After an injection has been given, the plunger rod of the syringe can be operated by one hand of the user in such a...http://www.google.es/patents/US5114404?utm_source=gb-gplus-sharePatente US5114404 - Multifunctional retractable needle type general purpose disabling syringe having enhanced safety features and related method of operation
Multifunctional retractable needle type general purpose disabling syringe ...
