| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plunger for a syringe for reducing mounting resistance when screwing and mounting a plunger body to a gasket, facilitating mounting work, and preventing rotation of the gasket during the mounting work. <P>SOLUTION: The plunger 1 for a syringe includes a gasket 2 having a luminal part 21, and a plunger body 3. The plunger body 3 includes a plate part 36 provided on a body part 30, a distal end part 31 which can be housed in the luminal part 21 of the gasket 2, a plunger side screw part 32 provided on the outer surface of the distal end part 31, and a rotation regulating rib 35 provided on the plate part and projected in a distal end direction. The gasket includes a spiral screw part 24 provided on the inner surface of the luminal part to be screwed with a spiral rib, a rib housing recessed part 25 capable of housing the rotation regulating rib 35, and an easy-to-deform part provided on a side part of the rib housing recessed part. <P>COPYRIGHT: (C)2013,JPO&INPIT |
