Safety guard transfusion device

The utility model discloses a safety guard transfusion device. The safety guard transfusion device is characterized in that an air sterilizer is arranged on an air pipe and can kill bacteria and viruses in external air; a diaphragm net capable of forming water surface tension is arranged in a burette and can automatically stop medicine fluid flow after transfusion is finished, so that the air is prevented from entering a venous blood vessel and a blood return phenomenon is avoided; a dripping speed alarming device is arranged outside the burette, so that the dripping speed can be automatically calculated, and the dripping speed alarming device can alarm when the dripping speed is greater than set upper limit and lower limit; a dripping speed adjustor has a locking function, so that a potential safety hazard caused when the dripping speed is privately adjusted can be avoided; a needle containing casing pipe is arranged on a thin transfusion pipe, so that after transfusion is finished, a puncture needle can be pulled out to be contained in the casing pipe, and accidental stab is prevented; a needle handle vertical to the puncture needle is arranged on the puncture needle, and a puncture needle fixer matched with the needle handle is provided, so that stripping of the puncture needle or leakage of liquid can be prevented.