Blood sign checking instrument

Two ports of a test tube bin are arranged on the top surface of the crate of a blood mark rechecking instrument. A test tube clip mechanism is arranged under the ports of the test tube bin. A bar code scanner is fixed on the upper part of the back of the crate. An infrared defection probe is installed on the wall surface of the test tube bin. A hand-held bar code scanning gun is installed on the lateral face of the crate. After the infrared defection probe detects that the test tube clip mechanism clips a test tube, the bar code scanner starts to scan, recheck and intercompare. The manual hand-held bar code scanning gun rechecks the mark of a blood bag. If the mark is wrong, a warning is provided. The blood mark rechecking instrument has the advantages of ingenious idea, simple structure and low cost, is provided with functions of automatic identification and recheck marking, and sends out warnings for the recheck results of different marks. Rechecked data are accurate and reliable. Mark error between a blood sample and the blood bag can be effectively prevented, and damages on the blood quality caused by the mark error between the blood sample and the blood are effectively avoided. The blood mark rechecking instrument can be convenient to use and carry and is applicable to blood stations and hospitals.