A surgical fixation device for mounting a stereotactic reference frame to a patient.
The device includes a mounting bracket assembly, a cannulated post, a base, an
anchor tube, a plurality of percutaneous pins, and a driving device. The mounting
bracket assembly is connected to a top portion of the post, whereas the base is
slidably coupled to a bottom portion of the post, and defines a plurality of legs.
The anchor tube extends distally from the post. The percutaneous pins extend distally
from the legs, respectively. Finally, the driving device is connected to the post
and is adapted to selectively contact the base. Upon final assembly, the base is
longitudinally moveable relative to the anchor tube. The base can be moved to a
retracted position such that the anchor tube is readily securable to a bony structure
of the patient's anatomy. Once secured, the base can be moved distally such that
the percutaneous pins engage the bony structure as well, thereby promoting overall
stability of the device.
