An insert (30) comprises a rod (32) having a proximal end (34) and a distal end (36). The insert (30) also comprises a tool (38) which is demountably coupled to the distal end (36). Proximal end (34) is formed with a ball (40) which is configured to seat and engage in a socket of a handle (12) of a laparoscopic instrument (10). The rod (32) fits within a sheath (14) of the laparoscopic instrument (10). The distal end (36) of the rod (32) is provided with an attachment head 42 to facilitate the attachment of the tool (38). A linkage mechanism (44) in the attachment head (42) converts the linear motion of the insert (30) (and in particular rod 32) relative to the outer sheath (14) to a pivotal motion.
