Patent ID: 7780679

Claim:
An intracranial access device comprising: a bolt mountable in a skull of a patient, said bolt having a longitudinal axis; an insert body having a plurality of access ports extending longitudinally through said bolt, said insert body being attachable to said bolt; at least one elongated guide structure forming an introducer passage with one of said access ports, said at least one elongated guide structure having a proximal end and a distal end; said distal end of said at least one elongated guide structure extending in a direction along a longitudinal axis of said bolt; at least a portion of said introducer passage having a noncircular cross section; an introducer longitudinally movable within said introducer passage; at least a portion of said introducer having an outer surface shaped to mate with said noncircular cross section of said introducer passage and thereby prevent rotation of said introducer; said introducer having a distal end curved away from a body axis of said introducer when unrestrained and straightenable when restrained within said introducer passage; and wherein said outer surface of said introducer is positioned so as to orient a direction of said curve of said distal end of said introducer in a predetermined direction relative to said bolt; and wherein at least one of said plurality of access ports of said insert body is not connected to said at least one elongated guide structure.