also includes an outer cap 90 this cap is positioned over the sleeve and needle it typically engages an outside of reduced diameter section 30 of chamber 12 this cap includes a cavity 92 which is sized to go over needle 36 base 84 and sleeve 86 this sleeve protects these components from contact with foreign materials and the like in the practice of the present invention a surface 36 on base 84 is coated with a marking ink which is transferred to the recipient of the needle when the needle is inserted for injection the ink may be positioned on the needle by any desired means the marking ink may be positioned on the ends of caps by contacting the ends with a marking ink source such as a marking ink pad roller or the like marking ink is readily positioned on the cap contacting the shoulder of the syringe in an alternate embodiment cap 90 may be equipped with a marking ink on its first end 42 so that when it is removed it can be used by placing it in position on a recipient to transfer ink to the recipient to mark the site of the injection as discussed above this particular technique does not result in ink being positioned immediately on the puncture mark but.