Method of intravascularly delivering stimulation leads into direct contact with tissue

A method of treating a disorder in a patient, comprising:

• delivering a stimulation lead within a cerebral blood vessel;
• intralumenally puncturing a wall of the blood vessel to create an exit point;
• introducing the stimulation lead through the exit point;
• advancing the stimulation lead from the exit point in a plane of a sub-arachnoid space of the patient's head, the plane extending along a surface of the cortex of the patient's brain;
• and
• placing the stimulation lead into contact with brain tissue the stimulation of which treats the disorder.

A method of treating a disorder in a patient, comprising:

• delivering a stimulation lead within a cerebral blood vessel;
• intralumenally puncturing a wall of the blood vessel to create an exit point;
• sealing the exit point after the stimulation lead has been introduced through the exit point by activating a sealing mechanism associated within the stimulation lead;
• and
• introducing the stimulation lead through the exit point into contact with brain tissue the stimulation of which treats the neurological disorder.