| 摘要 |
The syringe comprises means which all contribute to make it self-protecting and non-reusable. The elements of the piston (30, 60, 40) are shaped so that only one push under the action of the piston rod (50) is possible, together with the "vein test". All these elements can be separated from one another. The safeguard against reuse is reinforced by the fitting of a collar (70) at the top of the syringe body. The fitting part of the collar at the same time ensures better guiding of the displacement of the piston rod (5). The latter has a hollow conformation, and may be plugged into the nozzle (12), so that it also protects the needle from any outside contact. <IMAGE>
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