A steerable stylet assembly includes a tubular member defining a passage, the tubular member defining a first bend enhancing region. At least one further bend enhancing region is arranged intermediate the first bend enhancing region and a distal end of the tubular member. A first actuator is received in the passage of the tubular member, a distal end of the first actuator being fast with the tubular member at a first termination so that relative axial movement between the tubular member and the first actuator causes deflection at the first enhancing region. A second actuator is received in the passage of the tubular member, a distal end of the second actuator being fast with the tubular member at a second termination so that relative axial movement between the tubular member and the second actuator causes the distal part of the tubular member to be formed into a desired shape. The assembly includes a control mechanism to control relative axial movement between the tubular member and each of the actuators.
