There is disclosed herein a device (1) for moving an elongate member relativeto an elongate body through whichit extends, the device comprising: a housing (10) connectable to the elongatebody； a mover (20) associated with the housing andconnectable to the elongate member for moving the elongate member relative tothe housing and relative to a connected elongatebody； and a pre-mover (40) for adjusting an elongate member connected to themover relative to an elongate body connected to thehousing in preparation for moving the elongate member with the mover. There isalso disclosed a related surgical apparatus.
