The invention relates to a catheter (1) for administering anaesthetics to a peripheral nerve site in a patient. The catheter (1) comprises a hollow, flexible catheter tube (2) having a first inner lumen (3) extending along a longitudinal axis of the catheter tube (2) from a proximal end (4) to a distal end (5) where a balloon (6) is arranged. The balloon (6) is adapted to be inflated from a collapsed state to an inflated state by a fluid fed through the catheter tube (2) into an inner cavity (7) of the balloon (6). The inflated balloon (6) is used to ensure that the distal end of the catheter (1) stays at the desired position at the peripheral nerve site. The catheter (1) may comprise a second lumen (10), so that the balloon (6) is inflated via one lumen and the anaesthetics is administered via the other lumen. The invention further relates to a needle-catheter kit and for a method of administering anaesthetics by use of such a catheter.
