Patent ID: 6379328
Filing Date: 2002-04-30
Classification: A61M

Abstract:
A disposable syringe comprising a hollow cylindrical tube with a forward end narrowed at its outlet including attaching means for fitting a detachable hollow needle, said hollow cylindrical tube defines a rear opening through which a piston with a rubber bulb fitted in its end is fitted;said piston comprises an elongated hollow body with a forward and rear end capable of contained therein a liquid to be injected to a patient, said forward end includes a fluid communication orifice and coupling means in which said rubber bulb is rotatably fitted, said rubber bulb includes a longitudinal orifice and both coupling means and said rubber bulb having restricting means capable of restricting piston rotating movement wherein said rubber bulb includes an inner rubber sleeve surrounding its longitudinal orifice, said sleeve defines an inner tube extending from a front to a rear face of said rubber bulb.