Universal tracker adapter for surgical navigation system

A universal tracker adapter for a surgical navigation system is provided to be firmly fixed to a surgical instrument by having a wide contact area with the surgical instrument. A universal tracker adapter for a surgical navigation system includes a band(1), a fixing device(2), a case(3), and a tracker(4). The band(1) is coupled with a surgical instrument. The fixing device(2) adjusts the length of the band(1) and fixes the band(1). The band(1) and the band fixing device(2) are fixed to the case(3). The tracker(4) is attached on the case(3). The band(1) and the band fixing device(2) are a worm band and a screw. The tracker(4) includes an infrared ray marker(5).