| http://www.w3.org/ns/prov#value | - th locking means being associated with said plunger rod such that the volume of the syringe may be administered only once, characterized in that said locking means is a separate stopping collar through which said plunger rod passes for displacement so as to cause the stopping collar to follow only in the direction of the displacement for aspiration, such that during the ejection motion of said plu
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