Needle core fixed marrow puncture needle

The bone marrow puncture needle commonly used in clinical practice is 16 needle. This kind of needle is thicker, the bone of adult is harder, puncture often needs to rotate left and right, at the same time, the pressure of wrist can be used to insert the needle into the pulp cavity. Because the needle is a sleeve needle with a needle core, the needle core is often pushed out by bone because the palmar muscle can not press the needle core, and the sleeve needle is blocked so that the bone penetration fails. This is especially true for beginners

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