A device and system for medical instrument navigation is provided including a handle, a stylet having a distal end, a proximal end and an axially disposed aperture, the proximal end affixed to the handle. A navigation sensor capable of registering positional information is disposed adjacent to the handle for tracking the location of the handle. A pair of thin fibers forming an optic cable is disposed in the aperture, wherein the optic cable measures deflection and the location and direction of the distal end of the stylet relative to the electromagnetic sensor. An interrogator is coupled to the optic cable. The navigation sensor reports its position in space while the interrogator reports the amount and direction of the deflection of the distal end of the stylet in relation to the navigation sensor. A processor analyzes data to determine the location of the distal end of the stylet in space.
