| 摘要 |
<p>An automatic resorption type antipollution medicine adding syringe for preparing an injection liquid medicine comprises: a barrel (1), an alar plate (1a) fixed at the back end of the barrel (1), a piston (2) fixed in the barrel (1), a guide cover plate (1b) placed at the back end part of the barrel (1), a columnar push rod (3) connecting with the piston (2) after penetrating through the middle part of the alar plate (1a), and an air filter (4) connected at the back part of the barrel (1) communicating with the inner cavity of the barrel (1). Wherein the periphery of the rod (3) between the alar plate (1a) and the piston (2) is equipped with an elastic soft membrane sleeve pipe (5), and the normal length of the sleeve pipe (5) is shorter than the stroke length of the piston (2) in the barrel. The syringe could save the labor intensity and is convenient to use.</p> |
