Procedure Of Combined Lumbar And Epidural Anesthesia Needle

From the outside to the inside, the spine is successively skin, subcutaneous tissue, intervertebral ligament, ligamentum flavum, dura dura, arachnoid membrane. In spinal anesthesia, it goes through all or part of the spine. The anesthesiologist uses a syringe with bubbles to test whether the ligamentum flavum has been reached or punctured, to prevent the accidental introduction of large quantities of narcotic drugs into the subarachnoid space and the production of spinal anesthesia. The outflow of CSF indicates that the puncture needle has reached the subarachnoid space and can be administered.