How to use a bone marrow puncture needle

The bone marrow puncture needle is divided into two parts: the needle body and the needle core. The screw at the front is used to fix the length of the needle. When puncturing, the needle core needs to be put on, the needle is rotated vertically to the bone surface, and the needle core is pulled out after a feeling of failure, and a small amount of bone marrow smear is drawn with a syringe for inspection.

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