| 摘要 |
A device for underpressuring collection and dosage liquid samples, in particular for analytic tests, comprises a holder with blood sample collection tube-syringe (4) on the one side and a needle arrangement (11, 12) on the other side, the holder comprises a set of two valves, the first valve on the tube-syringe's side being a tyre valve and the second valve on the side of the needle being a membrane valve (6, 7, 8) which has a membrane (6) placed on an under-support (7) with side-inlets (8). By virtue of the present invention, after inspection of the correctly performed injection into the blood vascular system or any body cavity in the observation window, the liquid material flows into the blood sample collection tube-syringe in unconstrained manner and it cannot flow back. Moreover, the shield of the holder is a safety container for a used needle. The device according to the invention may be used also for dosage remedy liquids with an added opening needle head. |
