| 摘要 |
<p>A Syringe assembly comprising a elongated hollow tubular barrel made of a plastic material having a discharge opening at one end and open at its opposite end, an elongated hollow tubular plunger member made of plastic material having a closed spherical tip at its outer end and open at its opposite end, means defining a circumferentially extending, radially outwardly directed bead on the plunger of a predetermined diameter relative to the diameter of the barrel to provide a snug sliding fit upon actuation of the plunger axially in the barrel whereby liquid medicament product may be drawn into the barrel when the plunger is actuated in one direction relative to the barrel and dispensed though the discharge opening when the plunger is activated in the opposite direction.</p> |
