Patent ID: 6616636
Filing Date: 2003-09-09
Classification: A61M

Abstract:
A disposable safety syringe, which leaves no residual injection, comprising:(a) a syringe barrel, which comprises a connecting tip for a needle base at an upper end of the syringe barrel; a barrel finger flange; a rear cap receptacle for maintaining sterility at a lower end of the syringe barrel; and a plunger stopping protrusion which is slanted toward the upper end of the syringe barrel around the inner diameter of the lower end of the syringe barrel; (b) a needle base connected to the connecting tip of the syringe barrel, wherein said needle base comprises a syringe needle connected to an upper end of the needle base; and a needle base protrusion at a lower end of the needle base; (c) a syringe plunger, which comprises an injection tip connected at an upper end of the plunger; a syringe thumb rest at a lower end of the plunger; an injection tip protrusion at an upper end of the injection tip; and a plunger stopping rib for contacting the plunger stopping protrusion to prevent loss of injection; and (d) a needle shield, placed outside of the syringe barrel, which comprises a disposable cap receptacle, and a detachment handle at an upper end of the needle shield.