| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an injector quantitatively discharging a small amount of content. <P>SOLUTION: When a piston 2 in a syringe 1 on which an injection needle 6 is mounted, is slid by a plunger 3 to discharge a content, this injector that includes, on an inside space 3a<SB POS="POST">2</SB>of the plunger 3, a rod 4 that is slidably retained in a central open hole 2d provided in the piston 2 and is disposed concentrically and duplicatedly with the plunger 3; interlocks a locking end 3a<SB POS="POST">7</SB>of the plunger 3 to a window hole end 1f<SB POS="POST">1</SB>of the syringe 1 to stop it at a predetermined pullback amount; stops the pushing of the plunger 3 that discharges residual air in the injection needle 6 along with a part of the content, by a contact between the plunger stopper 3c and a finger rest part 1e of the syringe 1, and stops a tip end 4a which is projected to the inside of a filling space M by the pushing of the rod 4, at a predetermined projection amount by a rod stopper 4h<SB POS="POST">1</SB>to stop the discharge of the content at the prescribed amount. <P>COPYRIGHT: (C)2013,JPO&INPIT |
