Patent ID: 7033326

Claim:
A method of introducing a brain stimulating lead into a patient's brain composing: holding a first cannula in a substantially fixed position completely external to the brain; slidably supporting a second cannula with the first cannula; positioning the second cannula with a proximal end extending beyond the proximal end of the first cannula and a distal end extending beyond the distal end of the first cannula and so that the second cannula extends at least partially into the patient's brain; inserting the brain stimulating lead through the second cannula; using the second cannula as a macroelectrode, wherein the macroelectrode is attached to the second cannula; using a stereotactic frame to hold the first cannula in a substantially fixed position; and pulling the second cannula away from the patient's brain, wherein the second cannula includes at least two splittable sections having a perforated interface.