| 摘要 |
The invention concerns a syringe (10) comprising a rigid cylindrical body (12) having a first end (14) with an orifice (16) and a second open end (18) and, inside said body, a compression plunger (30) connected to a control rod (26) and a separating plunger (36) connected to said compression plunger by flexible linking means (46). The separating plunger (36) is provided with unidirectional communicating means (48; 58; 68) whereby it is possible to take successively into said body two separately sealed volumes of liquid such that only the volume taken last can be expelled from the syringe. The invention is useful for sampling blood or corporeal liquid before analysis thereof. |
