through the passage 502 and through the bone 100 and the marrow 122 to provide a controlled passage of any treatment 900 referring now to fig8 and 9 as previously mentioned the drilling system 10 also includes a stylet 710 which is utilized to plug the cortex adapter 702 when the cortex adapter 702 is not in use to prevent outflow through the cortex adapter 702 and to prevent coagulation of blood in or at the end of passage 502 to accomplish these goals the wire section 718 of stylet 710 is capable of fitting within and through the cortex adapter 702 and may preferably extend the entire length of the capillary 704 and into the marrow 122 as depicted in fig7 the stylet 710 may be constructed to include a nose 716 to fit into the tapered conic cavity 714 of the cortex adapter 702 the wire section 718 of the stylet 710 is sized to fit within the cortex adapter 702 sufficiently close to preclude outflow of bodily fluids through the cortex adapter 702 but not so close as to be irremovable from the cortex adapter 702 ideally both the cortex adapter 702 and the wire section 718 of the stylet 710 have cylindrical cross sections to encourage this close fit referring to fig8 an exploded view of the constituent parts including the hypodermic guide tube 106 the cortex adapter 702 and the stylet 710 are depicted referring to fig9 when sufficient numbers of cortex adapters 708 have been inserted into the tissue the treatment 900 may be introduced into the cancerous lesion 124 through the cortex adapter 702 the bone 100.