The drug is inserted via a catheter into the epidural space in your spine.药物通过导管输进你脊椎的硬膜外腔。Indwelling catheters are used during labour following epidural anaesthesia.产妇生产时，可以在硬膜外麻醉之后使用留置导管。They gave my wife an epidural when she was giving birth.我妻子分娩时，医生给她施行了硬膜外麻醉。