snap fit that provide for connection of a fluid drainage or administration device is acceptable referring to fig2 and 6 in operation a user grasps hub 210 or another component that may be coupled to hub 210 and advances safety needle assembly 102 toward a patient 39 s skin the first component of safety needle assembly 102 that contacts the skin is stylet tip 214 as the user continues to push safety needle assembly 102 into the skin the blunt stylet tip 214 transfers the pushing force through stylet 206 compresses spring 610 causes cannula 202 to move relative to stylet 206 and allows cannula tip 204 to move toward the skin when the pushing force is sufficient enough cannula tip 204 will contact the skin and the sharp tip will penetrate the skin and soft tissues underneath the skin when cannula tip 204 reaches an area of little or no resistance spring 610 will uncompress allowing stylet 206 to move forward again such that stylet tip 214 is distal to cannula tip 204 and stylet port 208 is exposed to the area areas of little or no resistance include fluid or air filled spaces such as the plerua lungs or any other fluid filled space the user desires to reach to confirm that safety needle assembly 102 is in the correct location the user may connect a fluid drainage device to connection means 216 and use the fluid drainage device to pull fluid or air from the area as means of confirmation fluid drainage devices that may be used include syringes suction canisters wall suction and.