Patent ID: 6231550
Filing Date: 2001-05-15
Classification: A61M

Abstract:
A syringe which facilitates one handed operation for both injection and aspiration without modification of a user's grip on the syringe by the user's fingers and which accomplishes both injection and aspiration by movement of the user's thumb towards the user's fingers, the syringe comprising:a barrel having a central passage with a longitudinal axis and terminating in a distal end region and a proximal end region;a pair of finger-engageable wings attached to said proximal end region;a plunger assembly having a plunger stem terminating in a plunger head region and a plunger stem free end, said plunger head region in turn having a plunger head configured to slidably and sealably engage said central passage of said barrel;a barrel attachment engaging the barrel, said barrel attachment having an attachment stem associated therewith which has an attachment stem distal end region and an attachment stem proximal end region terminating in an attachment stem free end, said attachment stem being movable with respect to said barrel; andmeans for inducing diametrically opposed movement of said plunger stem and said attachment stem with respect to said barrel.