Abstract: A laparoscopic instrument (1) including a grip (2) provided with an actuator (3) which can effect, through a linkage (5), the manipulation of an effector (9) placed at a first end portion of a tubular element (7), the tubular element (7) being attached to the grip (2) of the instrument (1), in which there is arranged a ratchet mechanism, in which a pawl (24) is arranged to cooperate with a substantially complementary ratchet bar (22), teeth of the pawl (24) being arranged to be activated or deactivated for engaging teeth of the ratchet bar (22), by means of a connection switch (26) and the connection switch (26) being connected to the pawl (24) of the ratchet mechanism (20) via a flexible element (28).

Abstract: The present invention is constituted by an instrument (1) for use in laparoscopic surgery, including a grip (2) which is provided with an actuator (3), and which effects, through a linkage (3?, 5, 6), the manipulation of an effector (9). The effector (9) is positioned at a first end portion of a tubular element (7), the tubular element (7) being attached to the grip (2) of the instrument (1). The linkage (3?, 5, 6) causes the relative movement of the actuator (3) to be non-linear relative to the relative movement of the effector (9).