The invention comprises an integrated skin-mountable multifunction device for use with a computer assisted or image guided surgical system and methods of using the same, wherein the multifunction device includes a patient mountable portion that has at least one position indicating element and at least...http://www.google.de/patents/US20060173269?utm_source=gb-gplus-sharePatent US20060173269 - Integrated skin-mounted multifunction device for use in image-guided surgery
