The invention discloses an
intraoperative navigation system used for implanting a
pedicle screw. The
intraoperative navigation system comprises a multifunctional
drill bit, a near-
infrared parameter collecting device, an electromagnetic positioning device and a computer, wherein the electromagnetic positioning device comprises a
magnetic field generator and an electromagnetic position indicator which are connected through a cable, and the electromagnetic position indicator is also connected with the computer; the multifunctional
drill bit comprises a threaded sleeve, a receiving
fiber, a launching
fiber, an electromagnetic positioning coil, an inner stainless steel
pipe, an outer stainless steel
pipe and a
handle, and the receiving
fiber, the launching fiber and the electromagnetic positioning coil are parallelly and are closely arranged in the inner stainless steel
pipe; the electromagnetic positioning coil is connected with the electromagnetic position indicator, and the receiving fiber and the launching fiber are respectively connected with a
light source output interface and a
light source input interface of the near-
infrared parameter collecting device; and the near-
infrared parameter collecting device is connected with the computer. The
intraoperative navigation system provided by the invention has the advantages that the operation is simple, the
navigation system is effective in real time, the implanting position, direction and depth of the
pedicle screw can be monitored in real time, and early warning can be achieved when the screw is implanted in a deflection manner or reaches a boundary.