Disposable plastic blood bag, a sealed container integrating blood collection, separation, transfer, storage and transfusion operations, consists of blood collection tube, blood collection needle, transfusion socket, anticoagulant and transfer tube, which has the advantages of easy operation and avoiding blood contamination and is widely used in modern clinical medicine.

Disposable plastic blood bag permeability and testing methods
With the increase of clinical applications, the demand of platelets is increasing. However, platelets are prone to damage after leaving the body, reducing the therapeutic effect. Therefore, scientific storage is more and more important. On the one hand, there should be a suitable storage temperature, 22℃~24℃ is appropriate. On the other hand, the normal aerobic metabolism of platelets should be maintained. Therefore, the disposable plastic blood bags for storage of oxygen permeability is particularly important. The good oxygen and carbon dioxide permeability of blood bags effectively promote the exchange of gases inside and outside the bag, so that the carbon dioxide generated inside the bag is fully distributed and reduce the accumulation of carbonic acid in the bag, while accelerating the replenishment of oxygen to maintain the aerobic metabolism of platelets and reduce the generation of lactic acid, thereby comprehensively controlling the rate of decline in platelet PH.

Disposable plastic blood bags pressure resistance and test methods
Blood separation, mainly refers to the separation process of red blood cells good plasma, the blood bag into the centrifuge, because the red blood cells relative to the plasma mass heavy, under the action of centrifugal force, red blood cells precipitation to the bottom of the bag, plasma floating in the upper, the two by virus inactivation in closed conditions into different blood bags to complete the separation process. In this process, blood bag breakage occurs from time to time, and the resulting blood loss is becoming increasingly prominent. In essence, it is mostly the rupture of the blood bag at the weak point caused by the centrifugal force applying pressure. It can be said that the bag and the edge of the pressure resistance is the key factor of the blood bag breakage or not. Therefore, it is recommended to use the indicator of "pressure resistance" to monitor the pressure-bearing capacity of blood bags.