| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a syringe gasket for maintaining the liquid tightness between the gasket and an outer cylinder of a syringe when the internal pressure in the syringe rises, and also to provide a plunger with the syringe gasket and the syringe. <P>SOLUTION: The plunger 1 with the syringe gasket is a cylindrical body of which distal end is closed and rear end opened, and includes the syringe gasket 2 having a plunger mounting part 3 inside and the plunger 10 attached to or attachable to the gasket 2. The distal end part the gasket 2 is applied with the pressure and deformed rearward, so that the diameter of the vicinity of the portion thereof in contact with the outer cylinder 56 of the syringe of the gasket is expanded. The distal end part 7 of the plunger 10 includes a contact part 15 which is separated from the inner face 2a of the distal end part of the gasket 2 and can come into contact with the inner face 2a of the distal end part of the gasket 2 when the distal end part 7 of the gasket 2 is deformed rearward. <P>COPYRIGHT: (C)2013,JPO&INPIT |
