Abstract: FIG. 1 depicts two different size open slots; the narrow opening guides the needle by its slot during Step 2 procedure (FIG. 4). The lager open slot (40) provided at the end of the needle cap (FIG. 1) is the clearance for the needle hub (100 in FIG. 4). This open slot (40) allows the needle to come in at angle to make a contact with the cap at 90 (FIG. 4). This procedure eliminates the conventional way of capping of pushing against each other between a cap and a needle where the most percutaneous injuries are occurred while doing so. When it reaches the position Step 3 in FIG. 4, the tip of the needle is already passed the injury plane which means the hand and fingers are behind the point where it is safe to push the cap against the needle away from the hand of the user.