What is the process of making a lumbar puncture needle?

Usually take a side-bending position, the patient bends the neck and tuck the knees, and the back is as close to the bed as possible. After local routine disinfection and anesthesia, wear rubber gloves and puncture from the L3-4 (L2-S1) cone gap. The puncture needle is slowly inserted in the direction of the spinous process. If the needle tip encounters bone during the needle insertion process, the needle should be retracted to the subcutaneous angle to be corrected before performing the puncture. Insert the needle about 4-6cm, you can pierce the dura mater to reach the subarachnoid space, withdraw the needle core to flow out of the cerebrospinal fluid, and then insert the needle core to pull out the puncture needle. Slightly pressurize the puncture point to stop bleeding, apply gauze and fix it with tape? Lie supine for 4-6 hours postoperatively.

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