Patent ID: 8032204
Filing Date: 2011-10-04
Classification: A61B

Abstract:
1. A fiducial marker member locatable by an imaging system, comprising: a unitary fiducial marker having an imageable fiducial location head and a shaft extending directly outward from the imageable fiducial location head; wherein the imageable fiducial location head is substantially spherical and has a receptacle wall that defines a conical receptacle extending from a cut out opening in the imageable fiducial location head to an apex corresponding to a centroid of the imageable fiducial location head, wherein at least a portion of the shaft defines a structure operable to be directly secured to a bone, wherein the shaft includes a laterally expandable distal tip and defines a passage extending from the receptacle into the shaft; and a member configured to expand the laterally expandable distal tip as the member is moved within the passage in the shaft and toward the distal tip.