| 摘要 |
PROBLEM TO BE SOLVED: To provide a syringe plunger in which the attachment of a pusher to a gasket is easy, and that can prevent the detachment of the pusher from the gasket after the attachment.SOLUTION: A syringe plunger 1 comprises a gasket 3 and a pusher 2. The pusher comprises a plurality of elastically deformable protruding tip parts 7a and 7b that protrude in a tip direction from a tip part of a body part, and the protruding tip parts comprise shaft parts 71a and 71b and inclined parts 72a and 72b provided at their tip parts. The gasket comprises a bore part 35 that can house the plurality of protruding tip parts of the pusher. The bore part comprises a base end side bore part 36 and an approximately conical inside surface part 37a having a larger back end part inside diameter than its tip part. The inclined parts of the pusher come into contact with the approximately conical inside surface part and press it when being housed in a tip side bore part of the gasket.SELECTED DRAWING: Figure 13 |
