SYRINGE FOR FILLING MEDICINE, SYRINGE FORMULATION, AND ITS PRODUCTION

摘要

PURPOSE:To improve the efficiency of line production by enabling the machine processing of the work of mounting the lock tube by forming a notched part on the flange part of the lock tube and sending the air freely through a space between a lure taper part and the lock tube by the notched part of the lock tube. CONSTITUTION:A syringe formulation 1 has a liquid medicine A filled inside a tube barrel 2 made of glass, which is sealed by a sealing member 3 made of rubber and a rubber gasket 4. A syringe and a plunger rod are mounted. By pressing the plunger rod, the liquid medicine A is extracted. A spiral 11 is formed inside a lock tube 10. A flange part 14 engaged with the recessed grave on the outer peripheral of the back end of a lure taper part 8 of the barrel 2 is formed. At the center of the flange part 14, a engagement hole opening to the small diameter is formed at the outer diameter of the recessed groove of the lure taper part 8. Four notched parts 16 are formed in the direction crossing at right angles from the engagement hole.