SAFETY SHIELD SYSTEM FOR A SYRINGE

摘要

A medical device for delivering medicament to a patient including a syringe assembly, a shield body, a retainer and an urging member. The syringe assembly includes a barrel defining a reservoir for medicament, a needle cannula coupled to the barrel and in fluid communication with the reservoir, a plunger having a stopper positioned in the reservoir and a thumb pad for moving the plunger in the reservoir. The syringe barrel is movable within the shield body between a first position exposing the forward tip of the needle cannula, and a second position where the tip of the needle cannula is in the shield body. A retainer secures the syringe barrel in the first position. An urging member urges the syringe barrel from the first position toward the second position upon interaction with the thumb pad and upon the release of pressure applied to the thumb pad.