Patent ID: 6860872
Filing Date: 2005-03-01
Classification: A61M,Y10S

Abstract:
1. A safety syringe, comprising: a hollow body, said body being of a first predetermined length and having an outer surface, a first end, a second end, cylindrical bore of a first predetermined diameter and means for gripping the hollow body adjacent the second end; said first end including an opening of the first predetermined diameter; said second end including a cavity extending from the cylindrical bore and terminating in an outlet portion, said outlet portion having a first end, a center section and a second end and being fixedly attached at its first end to the cavity; said outlet portion including an orifice of a second predetermined diameter, said orifice extending outwardly from said cavity; a hollow needle, said needle having a first end and a second end and being fixedly attached at its first end to the second end of the outlet portion such that fluid may travel from the cylindrical bore, through the cavity, through the outlet portion and through the needle; a plunger, said plunger having a longitudinal shaft longer than the first predetermined length, a first end and a second end, a thumb pad fixedly attached to the first end of said shaft, and a piston, said piston being formed of a resilient material, attached to the second end of said shaft, and being sized and shaped to fit sealably within the cylindrical bore of the hollow body; a needle shield, said shield having an outer surface, a first end, a second end, and being sized and shaped to fit slidably over the needle and at least a portion of the hollow body of the syringe; means for moving the needle shield from the first position to the second position using a single hand; means for containing any fluid leaking from the second end of the needle within the needle shield when the shield is secured to the hollow body in the second position; means for securing the needle shield at its first end to the hollow body in a first position, said first position permitting the second end of the needle to extend outwardly from the second end of the shield and in a second position in which the second end of the needle shield extends beyond the second end of the needle, said means comprising: