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 puncture often fails because the palmar muscle of the palm cannot press the needle core and then the needle core is pushed out by bone and the sleeve needle is blocked. This is especially true for beginners.

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