Patent ID: 8554339

Claim:
A system comprising: a. an anchor assembly, the anchor assembly comprising: i. a base plate; ii. at least one anchoring structure formed in or on the base plate, the anchoring structure configured to be anchored in a head of a patient; and iii. at least one lead anchoring structure formed in or on the base plate; and b. at least one lead, the at least one lead comprising: i. a lead body extending from a distal end to a proximal end; ii. at least one electrode located on or in the distal end of the lead body; and iii. at least one lead anchor located on or in the lead body proximal to the electrode, wherein the lead anchor has a spherical geometry with a maximum diameter d 2 and a minimum diameter d 1 , the lead anchoring structure comprises an opening with a diameter d 1 ′ and a cavity with a maximum diameter d 2 ′, and d 1 and d 1 ′ are substantially equivalent and d 2 and d 2 ′ are substantially equivalent, and wherein the at least one lead anchor of the lead and the lead anchoring structure are configured to have a compression fit mating relationship between the lead anchor and the lead anchoring structure to secure the at least one lead to the anchor assembly.