Generally, the present invention is directed to a method and system for a aligning surgical guide instrument over a burr hole in a patient's body. More particularly, the present invention is directed to a stand-alone instrument guidance unit that is attachable to a patient's skull. Adjustments of a surgical...http://www.google.es/patents/US6491699?utm_source=gb-gplus-sharePatente US6491699 - Instrument guidance method and system for image guided surgery
Instrument guidance method and system for image guided surgery
