| 摘要 |
Syringe for liquids comprises: a plastic cylinder with piston and a suction channel situated at the end of the cylinder. The inner cylinder wall (10) is so arranged that the space behind the piston (11) is connected to the atmosphere at a predetermined axial position, the piston has an elastic outer surface and fits tightly into the cylinder wall. The inner wall of cylinder (10) has several ribes (16) and/or channels which are arranged in pairs and are displaced diametrically opposite to each other. The syringe is suitably graduated and exactly predetermined quantities of liquids (i.e. blood) can be safely and easily sucked in. |
