BD Tuohy Epidural Needles feature a long, curved bevel with distal tip designed to safely enter the epidural space and facilitate catheter introduction, while a smooth proximal bevel helps reduce the risk of cutting a receding catheter. Both the BD Weiss and the BD Tuohy Epidural Needles have calibrated needle-depth markings to illustrate depth. or penetration characteristics, BD has a range of epidural needles to provide the control that meets their needs