Navigated surgical system

A surgical system comprising:

• a surgical tool comprising a handpiece housing and a power generating unit disposed in the handpiece housing for actuating a surgical accessory coupled to the power generating unit to perform a surgical task;
• and
• a powered auxiliary unit removably connectable to the handpiece housing,
• wherein the surgical tool is configured to supply power from a power source for the surgical tool to the power generating unit and to the auxiliary unit during operation of the surgical tool, and
• wherein the auxiliary unit is a tracker configured to emit light signals from the power supplied by the surgical tool, the light signals for being detected by a navigation system to track a position of the surgical tool relative to a surgical site.

A surgical system comprising:

• a surgical tool comprising a handpiece housing and a power generating unit disposed in the handpiece housing for actuating a surgical accessory coupled to the power generating unit to perform a surgical task;
• and
• a powered auxiliary unit removably connectable to the handpiece housing,
• wherein the surgical tool is configured to supply power from a power source for the surgical tool to the power generating unit and to the auxiliary unit during operation of the surgical tool, and
• wherein the surgical tool is configured to:
• determine whether the auxiliary unit is connected to the handpiece housing;
• and
• responsive to determining that the auxiliary unit is connected to the handpiece housing, supply the power from the power source for the surgical tool to the auxiliary unit.