Disposable plastic blood bag is a sealed container that integrates blood collection, separation, transfer, storage and transfusion operations, consisting 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.

A, disposable plastic blood bags of breathable performance
Blood, is composed of plasma and blood cells, which include red blood cells, white blood cells and platelets. With the gradual advancement of the concept of scientific blood use, the demand for blood components is growing, and thus the need for the separation of collected blood into various components of blood. Platelets, which play an important role in hemostasis and vascular repair, must be transfused when a patient has severe bleeding due to reduced platelets or abnormal function, while whole blood transfusion not only has low platelet concentration and poor therapeutic effect but also causes heart burden due to increased blood volume.

In practice, air permeability can be used as one of the criteria for the selection of blood bags, for platelet type of oxygen and carbon dioxide has a high rate of permeation requirements of blood components, it is appropriate to use a better permeability of TPE material blood bags, and for ordinary blood bags, DEHP plasticized PVC material blood bags can also meet its air permeability requirements.

B, disposable plastic blood bag breakage and pressure resistance
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 are heavy relative to the plasma mass, under the action of centrifugal force, red blood cells precipitate to the bottom of the blood bag, plasma floating in the upper, both after virus inactivation in closed conditions into a different blood bag 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.