The principle of vacuum blood collection is to draw different vacuum degrees of blood collection tubes with head cover in advance and use its negative pressure to automatically collect venous blood samples quantitatively. One end of the blood collection needle is inserted into the human vein, and the other end is inserted into the rubber plug of the vacuum blood collection vessel. Human venous blood in the vacuum blood collection vessel, under the action of negative pressure, through the blood collection needle into the blood container, in a venipuncture, can achieve multi-tube collection without leakage. The volume of the lumen. Sinymedical can provide you with a high-quality vacuum blood collection system