| 摘要 |
Disposable liquid withdrawal equipment comprising a holder (10) adapted to receive collection tubes and consisting of a transverse member (11) with a firmly mounted double needle (121, 122) and one or more axial parts (131, 132, 133) connected with said needle, and a shield which movably surrounds the holder and is provided with a first cam means (21) for cooperation with a movable protective member (133), which covers the rear end (122) of the double needle in the final position of the equipment. The equipment moreover comprises a grip (132B), provided or arranged on one of the axial parts of the holder, to cooperate with a second cam means (22), provided or arranged on the inner side of the shield, to lock the holder in a position of use during blood withdrawal, and to cooperate with a slot (25), provided in the shield, with catches (24) to lock the holder in a permanent final position after completed blood withdrawal. The equipment is operated easily and simply by movement with the thumb and leaves the points of the double needle surrounded by the tube without any risk of accidental contact. |
