| 摘要 |
PROBLEM TO BE SOLVED: To provide a simply structured syringe capable of collecting wasting blood and measuring blood in a syringe, saving time and labor when replacing the syringes, avoiding the infection risk caused by a wrong needle prick and also reducing the cost.SOLUTION: A syringe for blood collection having a double-layered cylinder structure includes: a piston 1; a first cylinder 2 which fits the outer periphery of the piston 1 so that it can slide and has a first blood collecting port 3; and a second cylinder 4 which slidably fits the outer periphery of the first cylinder and has a second blood collecting port 5.SELECTED DRAWING: Figure 1 |
