The syringe which stores the degassinging treatment mannered null liquid medicine of the liquid medicine dripping

摘要

PROBLEM TO BE SOLVED: To provide a liquid agent dropping device capable of discharging air bubbles which enter a syringe without wasting a liquid agent.;SOLUTION: The liquid agent dropping device is equipped with the syringe 20 and a plunger 30. The plunger 30 is reciprocatably inserted in the syringe 20 and a predetermined gap 26 is provided between the outer peripheral surface 30a of the plunger 30 and the inner peripheral surface 22a of the syringe 20. A passage 23b for connecting the side surface 23a of a seal holder 23 and the gap 26 is formed to the seal holder 23 for closing the upper end opening of the syringe 20. Upon defoaming, the plunger 30 is pushed down by a control part in a state that a leading end valve is closed and a supply valve is opened to discharge air bubbles in a liquid agent storage space 22b to the outside.;COPYRIGHT: (C)2008,JPO&INPIT