Is medical use one-time the process that does lumbar puncture needle how?

Intervertebral puncture is usually performed from lumbar 2 to sac1 (mainly from lumbar 3-4) in the stooped lateral decubitus position. After routine local disinfection and anesthesia, wear rubber gloves and use no. 20 puncture needle (no. 21-22 for children) to penetrate slowly along the direction of the spinous process. When the tip of the needle meets the bone in the process of puncture, the needle should be withdrawn to the subcutaneous Angle to be corrected before puncture. When the adult needle is inserted about 4-6cm (about 3-4cm in children), the dural membrane can be punctured and the lower cavity of the spider membrane can be reached. The needle core can be extracted to drain cerebrospinal fluid. After pressure measurement and slow drainage (no more than 2-3ml), the needle core can be inserted to pull out the needle. The puncture point was slightly pressurized to stop bleeding, and sterile gauze was applied and fixed with adhesive tape. Postoperative supine 4-6 hours. If the initial pressure exceeds 2.94kpa (300mm water column), it is not suitable to discharge fluid, only take the cerebrospinal fluid in the pressure tube to send cell count and protein quantification.

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