The invention relates to a novel safe alarm main component device of a disposable transfusion device, which comprises a
liquid storage cavity, a feeding liquid dropper head, a liquid outlet
pipe, liquid
medicine, a connecting double-floating body, an elastic thin slice bridge piece, an
electrode rod, a cone-shaped weight drop, a thin and
flexible cable, an
electrode connecting plug, a time-
delay cavity, an auto alarm
assembly, an
electrode connecting inserting sleeve, a power source, a coder, a light
projector, a language reminder, an adjustor switch knob and a cone-shaped inclined wall action face of the
liquid storage cavity. The liquid
medicine and the connecting double-floating body are arranged in the
liquid storage cavity, the elastic thin slice bridge piece, the electrode rod, the cone-shaped weight drop and the thin and
flexible cable are arranged on the connecting double-floating body, and the thin and
flexible cable, the electrode connecting plug, the feeding liquid dropper head, the time-
delay cavity, the liquid outlet
pipe and the cone-shaped inclined wall action face are arranged on the liquid storage cavity; the electrode connecting inserting sleeve, the power source, the language reminder, the light
projector, the coder and the adjustor switch knob are arranged on the auto alarm
assembly. The device can be matched, connected and used with the disposable transfusion device.