Anesthesia produced by the injection of a local anesthetic into the epidural space of the lumbar or sacral region of the spine, inducing regional anesthesia from the abdomen or pelvis downward and used especially to control pain during childbirth.脊柱麻醉：将局部麻醉剂注入腰椎或骶椎硬脊膜上的空间，以在腰部到骨盆间产生局部麻醉，尤其用在分娩止痛