Attachment Component, Navigation System and Method for Tracking a Surgical Instrument

A navigation system comprising;

• at least one tracker attachable to an instrument to be tracked;
• a localizer for tracking at least one of position and orientation of said at least one tracker;
• wherein
• the at least one tracker comprises a position transmitter and a tracker interface for attaching the at least one tracker to said instrument;
• and
• the navigation system is arranged to report position and orientation of the tracker interface of the tracker.

A method for tracking position and orientation of an instrument using a navigation system including a plurality of trackers and a localizer for identifying the position and orientation of the tracker, comprising

• receiving identity data from at least one tracker of the navigation system, said tracker identity data being unique for each tracker in the navigation system;
• receiving position and orientation data of a tracker interface being attached to a tracker interface of an attachment component;
• obtaining calibration data defining the position and orientation of a portion of the instrument relative a tracker interface of the attachment component;
• and
• translating the position and orientation data of the tracker interface into position and orientation data of the instrument using said identity data and said calibration data.