Bone marrow puncture device for hematology department

The utility model relates to the technical field of hematology department bone marrow puncture, and discloses a hematology department bone marrow puncture device which comprises a fixing plate, four connecting rods are fixed on the lower surface of the fixing plate, the four connecting rods are in threaded connection with supporting columns, suckers are fixed on the lower surfaces of the four supporting columns, and the suckers are in threaded connection with the supporting columns. A bone drilling knife is connected to the middle of the fixing plate, a first baffle is fixed to the upper end of the bone drilling knife, a needle tube is slidably connected to the middle of the bone drilling knife, a second baffle is fixed to the upper end face of the needle tube, a one-way valve is installed on the upper surface of the second baffle, and a collecting hose is fixed to the upper end of the one-way valve. A connecting piece is fixed to the end, away from the one-way valve, of the collecting hose. According to the