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During perfusion, blood will flow back to patients vein to cause blood if medical persons are careless while the needle isnt polled out immediately after injection.When a patient is being injected with the traditional Murphys dropper, the blood will easily flow back, the air can enter his veins and thrombus can easily come into being.Based on one-way valve theory, During transfusion, medicine liquid can pass the anti-flowback valve because of weight, its designed to prevent blood flowing back to veins. because the valve will close on account of increasing loss of weight.To present a safe environment for patients.
China Academy of Art
Shanghai, China
China Academy of Art
Shanghai, China
Zhang Wen
Zhang Guanchen
Wu BeiYi
Wang Jiejie