Laminectomy forceps comprising: - a cutting unit comprising a fixed beak and a sliding tray slidingly mounted on the fixed beak; said fixed beak comprising a stop portion intended to act as stop surface for a cutting portion of the sliding tray; - an actuation lever to actuate the sliding tray; - a lever mechanism connected to the actuation lever and to the sliding tray to multiply the force impressed on the actuation lever and transmit the multiplied force to the sliding tray; - a handle opposite to the actuation lever and joined to an external frame joined to the fixed beak; wherein the force multiplicator lever mechanism comprises: - a first lever shaped as a straight bar and comprising a first end that is hinged to the actuation lever by means of a first pin and a second end that is hinged to a second lever by means of a second pin; - a second lever shaped as a straight bar revolvingly mounted around a fulcrum; the second lever being connected to the first lever by means of the second pin and to a third lever by means of a third pin; - a third lever shaped as a straight bar and comprising a first end that is hinged to the second lever by means of the third pin and a second end, characterized by the fact that - the fulcrum of the second lever is fixed to the external frame; the fulcrum is disposed between a first end of the second lever and a second end of the second lever in such manner to define: - a first arm between the fulcrum and the first end of the second lever connected to the first lever and - a second arm between the fulcrum and the second end of the second lever that is hinged to the third lever; - the second end of the third lever is connected by means of a fourth pin to a stem intended to push the sliding tray; - the first lever and the second lever form a first angle (α) that is obtuse when the actuation lever is in opening position and becomes acute by actuating the actuation lever; - the second lever and the third lever form a second angle (β) that is acute when the actuation lever is in opening position and becomes obtuse by actuating the actuation lever; the obtuse angles are in the range of 95° to 110° and the acute angles are in the range of 50° to 70°. - a cutting unit comprising a fixed beak and a sliding tray slidingly mounted on the fixed beak; said fixed beak comprising a stop portion intended to act as stop surface for a cutting portion of the sliding tray; - an actuation lever to actuate the sliding tray; - a lever mechanism connected to the actuation lever and to the sliding tray to multiply the force impressed on the actuation lever and transmit the multiplied force to the sliding tray; - a handle opposite to the actuation lever and joined to an external frame joined to the fixed beak; - a first lever shaped as a straight bar and comprising a first end that is hinged to the actuation lever by means of a first pin and a second end that is hinged to a second lever by means of a second pin; - a second lever shaped as a straight bar revolvingly mounted around a fulcrum; the second lever being connected to the first lever by means of the second pin and to a third lever by means of a third pin; - a third lever shaped as a straight bar and comprising a first end that is hinged to the second lever by means of the third pin and a second end, - the fulcrum of the second lever is fixed to the external frame; the fulcrum is disposed between a first end of the second lever and a second end of the second lever in such manner to define: - a first arm between the fulcrum and the first end of the second lever connected to the first lever and - a second arm between the fulcrum and the second end of the second lever that is hinged to the third lever; - a first arm between the fulcrum and the first end of the second lever connected to the first lever and - a second arm between the fulcrum and the second end of the second lever that is hinged to the third lever; - the second end of the third lever is connected by means of a fourth pin to a stem intended to push the sliding tray; - the first lever and the second lever form a first angle (α) that is obtuse when the actuation lever is in opening position and becomes acute by actuating the actuation lever; - the second lever and the third lever form a second angle (β) that is acute when the actuation lever is in opening position and becomes obtuse by actuating the actuation lever;