Abstract: A detachable support arm structure couples a computer-assisted navigation system reference array to an instrument, for example, a surgical instrument, such that the geometry between the reference array and the surgical instrument is predetermined and registration of the instrument in the navigation system does not require calibration each time the reference array and support arm structure are coupled to the instrument. The support arm structure includes a mounting interface engageable with a mounting interface on the instrument. Engagement of the mounting interfaces releasably secures and repeatably and accurately locates and fixes the support structure to the instrument in a predefined geometry in each of six degrees of freedom.

Abstract: A disassembly tool for disassembling components secured together by a mating taper connection. The disassembly tool of the present invention includes a self-tapping sleeve for securement in the longitudinal bore of the component having the female portion of the locking taper connection. The self-tapping sleeve includes self-tapping external threads for securing the self-tapping sleeve in the longitudinal bore of the component having the female taper. The self-tapping sleeve further includes a longitudinal bore having internal threads mating with external threads of a threaded inner rod. In use, the self-tapping sleeve is engaged in the longitudinal bore of the component having the female taper. The threaded inner rod is thereafter threaded through the threaded longitudinal bore in the self-taping sleeve until the distal end of the threaded rod abuts the end of the component having the male taper and forces separation of the locking taper connection.