Patent ID: 8221435

Claim:
A device for fixation to a patient during neurological diagnosis, therapy or surgery, said device comprising: at least one fixation pin made of a non-magnetic, electrically conductive material for fixation to a patient; at least one pin support member that supports said fixation pin; and a single piece sleeve shaped insulator made of a non-conductive plastic material arranged to at least partially surround said fixation pin, said fixation pin extending through said sleeve shaped insulator, wherein said at least one pin support member includes a through bore formed therein for receiving said sleeve shaped insulator, said at least one pin support member having a surface structure formed within the through bore that cooperates with a corresponding surface structure formed on an outer surface of the sleeve shaped insulator, and wherein said cooperating surface structures provide a linear and rotational lock between the at least one pin support member and the sleeve shaped insulator.