| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a syringe capable of not easily causing the rotation of a gasket when mounting a plunger, easily mounting the plunger on the gasket and surely suppressing the detachment of the plunger after being mounted. <P>SOLUTION: The syringe includes a gasket 3, an outer cylinder and a plunger. The plunger has a spiral rib provided on the outer surface of a head part, and the gasket includes a spiral screwing part to be screwed with the spiral rib and a housing part 32 for the spiral rib formed part of the head part of the plunger. The spiral screwing part includes spiral peak parts 36, spiral dent parts 33 formed between the spiral peak parts 36, and a raised part 34, preventing the plunger from coming off, formed at the terminating end part of the spiral dent part 33 and gradually raised toward the direction of the housing part 32. <P>COPYRIGHT: (C)2011,JPO&INPIT |
