| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide means of easily controlling movement of a piston in a syringe. <P>SOLUTION: There is provided an injector type injection unit comprising a syringe and a piston, the injection unit being constituted such that a part of a sidewall of a rear end part of a syringe 1 is formed into a folded part 10 which can be pressed in the syringe 1, a main part of a piston 2 is provided with a vertical plate 11 extending along an axis of the syringe and a suitable number of disk-like horizontal plates 12 at right angle to the vertical plate 11. The folded part 10 is pushed in the syringe 1 and engaged with the horizontal plate 12 to restrict movement of the piston along the axis direction, and the folded part 10 is put back to the syringe-side wall surface by rotating the main part of the piston by the vertical plate 11 to release the movement of the piston from being restricted. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
