What are the classical landmarks for insertion of an internal jugular vein catheter? Technique Classical (Central) Insertion point is apex of Sedillot's triangle 1:Sternal head of sternocleidomastoid1Clavicular head of sternocleidomastoid 1Superior border of medial 3rd of the clavicle 1Needle angled at a 45° to the skin 1Aiming toward the ipsilateral nipple 1