Handpiece with surgical tool to perform holes in bone tissues

A handpiece (1) for making holes in bone tissues comprising a surgical tool (3;

• 103) provided with a tip or head (40;
• 140) adapted to penetrate the bone, characterised in that said handpiece is an ultrasound handpiece adapted to make said tip of the tool (40;
• 140) vibrate at ultrasonic frequencies, said tip of the tool (40;
• 140) comprising a plurality of cutting elements (43) defining the profile of the hole to be made in the bone, and there being provided in the body of said tool a main channel (36) which ends in an outlet hole (44) opening into said tip (40;
• 140) for the passage of a cooling fluid, so as to cool the working area affected by the tool tip.