| 摘要 |
The invention relates to a universal safety syringe with a protecting cap (1), a cylinder (3), a plunger (4) and a hollow needle lodged on a hollow needle base. The hollow needle base (2) is stored in the protecting cap (1) in such a way as to be resistant to knocks, and designed so as to be able to be pushed in. The protecting cap (1) can be pushed onto the outside of a cone of the cylinder (3) corresponding to a luer-cone, and is provided with a narrowing on its inner side, in front of a recess designed to accommodate the hollow needle base (2), for limiting the push-up path. A recess accommodating a hollow needle base is provided with an undercut (3b) to prevent forward removal of the hollow needle base, and with an undercut (3c), which can be compensated by broadening the cone from inside, intended to protect the hollow needle stop from unintentional pushing in during plunging. Furthermore, the plunger (4) has a section which broadens the cone cylindrically, and a mushroom-shaped plunger head (4b) which enters into pull contact enters with the needle stop. A preferred design includes a safety device for preventing the plunger from being unintensionally pushed in too early and too far.
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