Introduction to bone marrow puncture needle

Bone marrow aspiration is a common technique for taking bone marrow fluid. Bone marrow aspiration includes cytology, bacteriology and parasitology. Cytological examination is of great significance to the diagnosis, efficacy observation and prognosis of hematological diseases such as anemia, leukemia and some tumors. Common sites for bone marrow puncture include anterior superior iliac spine, posterior superior iliac spine, sternum or lumbar spine process. The first two piercings are safer and easier to perform. The sternum is thin, followed by the heart and large blood vessels, so puncture has a certain risk. However, due to the abundant sternal bone marrow fluid, sternal puncture is still necessary when other parts of puncture fail, but accidents through the sternal bone should be strictly prevented. Bone marrow aspiration should be performed in strict accordance with the operating procedures. Firstly, the puncture site should be selected, and the patient should select appropriate *** and perform local anesthesia at the puncture site according to aseptic operation technique. With special piercing needle, slowly drill bone-chilling quality; When the needle enters the bone marrow cavity there is a sense of loss of resistance. 0.1 ~ 0.2 ml of bone marrow fluid was extracted, and cell count and smear were performed immediately. If you need to do bone marrow bacterial culture, you can continue to draw 1 ~ 2 ml. The puncture site should be covered and fixed with sterile gauze. To avoid accidents, skin tests for anesthetics should be performed before puncture. Patients with bleeding tendencies should be cautious when performing bone piercings.