Multi-channel pipette used in nucleic acid extraction instrument

The invention relates to the technical field of medical devices and particularly relates to a multi-channel pipette used in a nucleic acid extraction instrument. The multi-channel pipette used in a nucleic acid extraction instrument comprises a multi-channel pipette backboard, a third motor, a multi-channel pipette head assembly, a lifting mechanism and a sliding mechanism, wherein the multi-channel pipette backboard is fixedly arranged on the Y arm of the multi-channel pipette, the third motor is arranged at the upper part of the multi-channel pipette backboard and is connected with the lifting mechanism, the multi-channel pipette head assembly is slidably connected with the multi-channel pipette backboard by virtue of the sliding mechanism and the upward/downward sliding of the multi-channel pipette head assembly is achieved by virtue of the lifting mechanism. The invention provides the multi-channel pipette used in the nucleic acid extraction instrument which had the advantages of simplicity in structure, good suction head loading effect and high liquid extraction efficiency.