Bone marrow puncture biopsy needle
The utility model discloses a bone marrow puncture biopsy needle which comprises a needle tube, a base connected to one end of the needle tube, and a spiral cutting edge arranged at the other end of the needle tube; the bone marrow puncture biopsy needle is characterized in that a first needle core and a second needle core which are matched with the inner wall of the needle tube respectively are further included, wherein the second needle core is shorter than the first needle core; and a polished rod is arranged at the part, which is adjacent to the spiral cutting edge, of the needle tube, threads are arranged at the part, which is adjacent to the base, of the needle tube, and a locking nut is matched with a limit threaded sleeve matched with the threads on the needle tube. In the bone marrow puncture biopsy needle, the operation method is simple, the depth of insertion of the needle is easily controlled, the success ratio of puncture is high, the time for sampling of puncture diagnosis and for treatment is shortened, the problem of frequent and repeated puncture is avoided, the pain of patients is relieved, meanwhile, the synchronous sampling at the same part of the bone marrow smear and the bone marrow biopsy tissue is ensured, and the bone marrow puncture biopsy needle is used for puncture and biopsy of other aspects besides bone marrow and biopsy.